Tektronix 2715 manual

Ser vic e Manual 2715 Sp ectru m Ana ly zer Vo l u m e 1 070-9096-06 This doc ume nt suppor ts f ir mwar e ver si on 12.01. 95 and a bove. W a rnin g Th e servicin g in structio ns are fo r use b y q ualified per sonne l onl y . T o avoi d per sona l i njur y , do not perfo rm any serv icing u nless yo u are q ualified to do so. R efer to all safet[...]

Copyright © T ekt ronix, Inc. All rights reserved. T ektroni x products are cove red by U.S. and fore ign patent s, issued and pending. Informat ion in thi s public ation superc edes that in all previo usly p ublis hed material. Sp ecifications an d price chang e privileg es res erved. T ektroni x, Inc., P .O. Box 500, Beavert on, OR 97077 TEKT RO[...]

W ARRANTY T ektroni x w a rrants that t his product will be free from defe cts in ma teria ls and workmanship for a pe riod of one (1) yea r from the date of shipment . If any such product proves defec tive duri ng this warranty pe riod, T ektroni x, at i ts option, e ither will repa ir the defec tive product wit hout charge for part s and labor, o[...]

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2715 Spectrum Analyze r Service Manua l i T able of Contents Gen eral Sa fety Su mmary ix ................................... Serv ice Sa fety Su mmary xi .................................... Pr eface xv ................................................... Specif icat ions Electrical Ch aracteris tics 1-1 .......................................... O[...]

T able of Contents ii 2715 Spectrum Analyze r Service Manua l 1st LO Interface , 1st LO, and 1s t L O Buf fe r Ampli fier 3-14 .................. Refer ence Os cillator 3-1 6 .............................................. Phase Lock Assembly (Ce nter Frequenc y Control System) 3-21 ............... V aria ble Resolut ion Module 3-33 ................[...]

T able of Contents 2715 Spectrum Analyze r Service Manua l iii List of Figures Fig ure 1-1: T ypi cal Accu racy L imits fo r Carrier -to -Nois e Measu rement 1-7 .......................................... Fig ure 1-2: T ypi cal Accu racy L imits fo r CTB Measu rement 1-7 ...... Figure 1- 3: T yp ic al Accurac y Limits for Nongated CSO Measu rement [...]

T able of Contents iv 2715 Spectrum Analyze r Service Manua l Figure 3- 17: Tim in g Diagram f or a T ypical Wr ite to the Contr ol Registe r 3-50 ............................................... Figure 3- 18: Tim in g Diagram of a T yp ic al Sweep for the Horizontal T rac k ing A/D Convert er 3-51 ................................. Fig ur e 3- 19: S[...]

T able of Contents 2715 Spectrum Analyze r Service Manua l v Fig ure 5-1 1: Presettin g the Fl atnes s Adju stmen ts on th e Log Board 5-35 ............................................ Figure 5- 12: Gain Step Refer ence T est Set u p 5-36 ................... Figure 5- 13: In t ernal Ref Ampltd T est Setup 5- 38 ................... Figure 5- 14: S W[...]

T able of Contents vi 2715 Spectrum Analyze r Service Manua l Figure 6- 8: Con nec tor Locations on the RF Deck 6-24 ............... Figure 6-9: RF Deck Scr ews and Nu t s 6-25 ......................... Figure 6-10: Fan and Fan Mounting Springs Detail 6-29 ............. Fig ur e 6-1 1: Powe r Supply Ass em bly Rem oval (Bottom V iew) 6-31 .... Fig [...]

T able of Contents 2715 Spectrum Analyze r Service Manua l vii List of T ables T a ble 1 -1: CA TV C hara cteristics 1 -2 ............................ T abl e 1-2 : Fr eque ncy -Re lat ed Char act er ist ic s 1- 1 1 .................. T abl e 1-3 : Fr eque ncy /Am plit ude Rel ate d Char ac te ris tic s 1 -13 ........ T a ble 1-4 : Ampl itud e-Rela[...]

T able of Contents viii 2715 S pec trum Analyzer Ser vice Manual T abl e 3-1 8: Pow er Supply and Ser ial Bus Conne ct or ( J10) Si gna l Names an d Defi niti ons 3-68 ............................ T able 3-19: Micr opr ocessor Inter face Connector ( J550) Si gna l Names an d Defi niti ons 3-69 ............................ T a ble 3 -20: Microp r oc[...]

2715 Spectrum Analyze r Service Manua l ix General Safety Summar y Rev iew the fol lowi ng safety p recautio ns to avo id inj ury and prev ent damag e to this product or any products c onnected to it. T o avoid potentia l h azard s, u se thi s product only a s specifie d. Only qualified pe rsonnel should perform serv ice pr oce dur es. While using [...]

General S afety S ummary x 2715 Spectrum Analyze r Service Manua l Keep Product Sur faces Clean and Dry . Provide Proper Venti lation. R e fer to the manual’ s installation instr uctions for details on insta lling the product so it ha s proper ve ntilation. T er ms in this M anual. These ter ms may appea r in this manual: W ARNING. W arning state[...]

2715 Spectrum Analyze r Service Manua l xi Service S afety Summary Only qualifie d personnel should pe rform se rvice pr ocedure s. R e ad this Serv ice Safety Summary and t he Gene ral Safety Summary before perfo rming any s ervice proce dures. Do Not Service Alone. Do not perf orm interna l service or adjustments of this product unle ss another p[...]

Service Saf ety S umma ry xii 2715 Spectrum Analyz er Service Ma nual[...]

2715 Spectrum Analyze r Service Manua l xiii Preface This manual contains ser vice informa tion for the 2715 Spectrum Analyz er . The servic e informa tion is located in two volume s. V olume 1 conta ins the mainte- nance procedur es and par ts lists. V olume 2 conta ins the component loc ators and schema tic diagrams. This manual is divide d into [...]

Preface xiv 2715 Spectrum Analyz er Service Ma nual Contact ing T ektr onix Phone 1-800-833-9200 * Address T e ktronix, Inc. Departm ent or nam e (if known) 14200 SW Karl Braun Drive P .O. Box 500 Beave rton, OR 97077 USA Web si te www . tektroni x.com Sales support 1-800-833-9200, sele ct opti on 1 * Service support 1-800-833-9200, sele ct opti on[...]

2715 Spectrum Analyze r Service Manua l 1- 1 Specifications This section lists the electr ical, physical, and e nvironmental c harac teristics of the spect rum anal yzer , s pecifies t he perform ance requi rements fo r thos e characteris - tics, and provide s supplementar y information. Elect ri cal Charact eri sti cs Unless other wise stated, the[...]

Sp ecificati ons 1- 2 2715 Spectrum Analyze r Service Manua l T able 1 - 1: CA TV Characteristics Character i st i c Descr i pt i on Input Confi guration All except Opti on 50 75 Ω Female F connect or Option 50 50 Ω T ype N connector Channel Selecti on The visual and aural carriers are displayed when the channel number is ent er ed, or either [[...]

Sp ecificati ons 2715 Spectrum Analyze r Service Manua l 1- 3 T able 1 - 1: CA TV Characteristics (Cont . ) Character i st i c Descr i pt i on Frequency Range 15 to 1015 MHz Resoluti on 0.1 dB Absolute Accuracy ± 2.5 dB for visual C/N ≥ 30 dB (300 kHz RBW) and for FM signal C/N ≥ 33 dB (100 kHz RBW) assumes fl atness corrections are present Re[...]

Sp ecificati ons 1- 4 2715 Spectrum Analyze r Service Manua l T able 1 - 1: CA TV Characteristics (Cont . ) Character i st i c Descr i pt i on Accuracy See Figure 1 - -1 on page 1 - - 7 Desired-to-Undesired Ratio (T ypical ) Channel averaged power is divi ded by total noi se plus distorti on in the channel Resoluti on 0.1 dB Accuracy ± 2 dB w ithi[...]

Sp ecificati ons 2715 Spectrum Analyze r Service Manua l 1- 5 T able 1 - 1: CA TV Characteristics (Cont . ) Character i st i c Descr i pt i on Carri er Su rvey Absolute peak am plitude of each vis ual carr i er m easured and each associated aural carrier level measured relati ve to the measured visual carrier for the selected channels — character[...]

Sp ecificati ons 1- 6 2715 Spectrum Analyze r Service Manua l T able 1 - 1: CA TV Characteristics (Cont . ) Character i st i c Descr i pt i on View Picture (T ypical) The visual carrier , NTSC or P AL f or m at depending on the sel ected channel, i s demodulat ed View Modulat ion (Field) (T ypi cal) One video fi eld of the sel ected channel video i[...]

Sp ecificati ons 2715 Spectrum Analyze r Service Manua l 1- 7 ± 4d Bt o5 0 0M H z ± 2d Bt o5 0 0M H z ± 4 dB at 1000 MHz ± 2 dB at 1000 MHz C/N Measurement Limit (dBc) 0 -- 1 0 -- 2 0 -- 3 0 -- 4 0 -- 5 0 -- 6 0 -- 7 0 -- 8 0 -- 9 0 -- 3 0 -- 2 0 - - 1 0 0 1 02 03 0 4 0 5 0 6 0 7 0 VISUAL CARRIER PEAK (dBm V) Minimum signal level for gated meas[...]

Sp ecificati ons 1- 8 2715 Spectrum Analyze r Service Manua l ± 4d Bt o5 0 0M H z( N o t e1 ) ± 2d Bt o5 0 0M H z( N o t e1 ) ± 4d Bt o5 0 0M H z( N o t e2 ) ± 2d Bt o5 0 0M H z( N o t e2 ) ± 4 dB at 1000 MHz (Not e 2) ± 2 dB at 1000 MHz (Not e 2) CSO Measurement Limit (dBc) 0 -- 1 0 -- 2 0 -- 3 0 -- 4 0 -- 5 0 -- 6 0 -- 7 0 -- 8 0 -- 9 0 -- [...]

Sp ecificati ons 2715 Spectrum Analyze r Service Manua l 1- 9 Measurement Limit (dBc) -- 2 5 -- 3 5 -- 4 5 -- 5 5 -- 6 5 -- 2 0 - - 1 0 0 1 02 0 3 0 4 0 5 06 07 0 INPUT LEVEL (dBmV) FOR SINGLE-SIGNAL TEST ENVIRONMENT T o 500 MHz 500 MHz to 1000 M Hz Figure 1 - 5: T ypical ACL Measurement Limits for 2 dB Accuracy Measurement Limit (dB) 25 35 45 55 6[...]

Sp ecificati ons 1- 1 0 2715 S pe ctrum Analyze r S e rvice Manua l Measurement Limit (dBc) -- 2 5 -- 3 5 -- 4 5 -- 5 5 -- 6 5 -- 2 0 - - 1 0 0 1 02 0 3 0 4 0 5 06 07 0 INPUT LEVEL (dBmV) T o 500 MHz using preselect or 500 MHz to 1000 M Hz using preselector T o 500 MHz in 60-channel f lat system dom inated by analog signals 10 dB stronger than aver[...]

Sp ecificati ons 2715 Spectrum Analyze r Service Manua l 1- 1 1 T able 1 - 2: Frequency -Rel at ed Characteristics Character i st i c Per formance Requirement Supplemental Information Channel Tuned with keypad, [CHAN/FREQ] [ y ] , or [CHAN/FREQ] [ b ] ,a c c o r d i n gt ot h e selected channel tabl e Frequency Range All except Opt ion 50 and Optio[...]

Sp ecificati ons 1- 1 2 2715 S pe ctrum Analyze r S e rvice Manua l T able 1 - 2: Frequency -Rel at ed Characteristics (Cont . ) Character i st i c Supplemental I nfor m at i on Performance Requirement Residual FM Wit h SP AN/DI V ≤ 20 kHz All except Opti on 50 and Option 75: ≤ 100 Hz peak-to-peak total excursion in 20 ms up to 1. 8 GHz Option [...]

Sp ecificati ons 2715 Spectrum Analyze r Service Manua l 1- 1 3 T able 1 - 2: Frequency -Rel at ed Characteristics (Cont . ) Character i st i c Supplemental I nfor m at i on Performance Requirement Resoluti on Bandwidth (6 dB down) Resoluti on bandwidth select ions are: 5 MHz, 1 M Hz, 300 kHz, 100 kHz, 30 kHz, 10 kHz, 3 kHz, 1 kHz, and 300 Hz for t[...]

Sp ecificati ons 1- 1 4 2715 S pe ctrum Analyze r S e rvice Manua l T able 1 - 3: Frequency/Amplitude Related Charact eristics (Cont.) Character i st i c Supplemental I nfor m at i on Perfor m ance Requirement Center Measure When acti vated, t he signal nearest center screen (or nearest marker if marker is on) and above a preset threshold level , i[...]

Sp ecificati ons 2715 Spectrum Analyze r Service Manua l 1- 1 5 T able 1 - 4: Amplitude - Related Char acteristics (Cont.) Character i st i c Supplemental I nfor m at i on Perfor m ance Requirement Display Dynam ic Range Al l except Opti on 50 and Option 75: 80 dB maxim um (Log) 8 divisi ons (Linear) Log Mode Displ ay Dynamic Range is dependent upo[...]

Sp ecificati ons 1- 1 6 2715 S pe ctrum Analyze r S e rvice Manua l T able 1 - 4: Amplitude - Related Char acteristics (Cont.) Character i st i c Supplemental I nfor m at i on Perfor m ance Requirement Sensiti vity wi thout Preamp Equivalent m aximum input noi se f or Resoluti on Bandwidth @1 10 MHz @ 1.8 GHz @ 2.15 GHz* q p each resolution bandwi [...]

Sp ecificati ons 2715 Spectrum Analyze r Service Manua l 1- 1 7 T able 1 - 4: Amplitude - Related Char acteristics (Cont.) Character i st i c Supplemental I nfor m at i on Perfor m ance Requirement Spurious Responses Residual (no input signal ) All except Opt ion 50 and Option 75: ≤ - - 51 dBmV ( ≤ - - 100 dBm) except at 1780 MHz where the spur[...]

Sp ecificati ons 1- 1 8 2715 S pe ctrum Analyze r S e rvice Manua l T able 1 - 5: Input/Output Signal Characteristics (Cont . ) Character i st i c Supplemental I nfor m at i on Perfor m ance Requirement Ext Trig (J102) BNC connector , 10 k Ω , DC coupled f or external t rigger signals V olt age Range Minimum T ypi cally at least 100 mV peak ,1 5H[...]

Sp ecificati ons 2715 Spectrum Analyze r Service Manua l 1- 1 9 T able 1 - 5: Input/Output Signal Characteristics (Cont . ) Character i st i c Supplemental I nfor m at i on Perfor m ance Requirement Pin 1 1: VL VL Out put DC out put to Opti on 05 ( Ext er nal Tr acki ng Gener at or ); t ypically  9. 5 V with TG l evel set to ON. Pin 12: SW PSLOP[...]

Sp ecificati ons 1- 2 0 2715 S pe ctrum Analyze r S e rvice Manua l T able 1 - 8: General Charact eristics Character i st i c Per formance Requirement Supplem ent al Information Sweep Normal, S ingle Sweep, and M anual Scan Sweep Rate 1  s/div t o 2 s/div in a 1 - - 2 - - 5 sequence Accuracy ± 10% over the center 8 di visions Tr i gger i ng Fr [...]

Sp ecificati ons 2715 Spectrum Analyze r Service Manua l 1- 2 1 T able 1 - 9: Environm ental Char acteristics Character i st i c Descr i pt i on The Description col umn describes how most characteristi cs wer e derived and a descript ion of the characterist ic. This i nstrument meet s MIL-T -28800E, T ype III, Class 5 , Style C Sp ecifica tions. El[...]

Sp ecificati ons 1- 2 2 2715 S pe ctrum Analyze r S e rvice Manua l T able 1 - 9: Environment al Character i st i cs ( Cont.) Character i st i c Descr i pt i on Vibration Operating (Instrument secured to a vibrati on platf orm during test) MIL-T -28800E, M ethod 514 Procedur e X (modi fied) 15 minut es along each of 3 major axes at a tot al displac[...]

Sp ecificati ons 2715 Spectrum Analyze r Service Manua l 1- 2 3 T able 1 - 1 1: Cert i f i cat i ons and Com pl iances Category Descr i pt i on EC Declaration of Conf or m ity - - EMC Meets i ntent of Di rective 89/336/EEC f or Electromagnetic Com patib ility . Complia nce wa s demonstrated t o the foll owing specifi cations as li sted in the Off i[...]

Sp ecificati ons 1- 2 4 2715 S pe ctrum Analyze r S e rvice Manua l T able 1 - 12: Safet y Certification Compliance Category Descr i pt i on T emperature (oper at ing) +5 ° Ct o+ 5 0 ° C Alti tude (maxim um operating) 2000 meters (6562 ft.) Rela tive Humid ity (max imum op- erating) 80% for t emperatures up to 31 ° C, decr easi ng l inearly to 5[...]

2715 Spectrum Analyze r Service Manua l 2- 1 Operating Information This section c ontains the following: H Inst rument d escript ion H Conformanc e to industry standa rds H Product servic e information H Instrume nt construction H Installa tion and prepa ration for use H Power cord H Fu se replacem ent H Assembly and c ircuit number ing H Access or[...]

Opera ting Informa tion 2- 2 2715 Spectrum Analyze r Service Manua l H Singl e and ∆ Ma rkers A single marke r can be enabled to show the fre quency and amplitude of a spec ific point on the display . Delta ( ∆ )m a r k e r s show the dif fer ence f requenc y and amplitude be tween any se lected two points on the displaye d wavefor m. H T rac k[...]

Opera ting Informa tion 2715 Spectrum Analyze r Service Manua l 2- 3 Inst rum ent Constr ucti on Modular constr uction provides rea dy acces s to the maj or circuit s. Each ci rcuit board c ontaining RF sensitive circ uits is mounted in a ca sting, with feed thr ough connec tors through the c ompartment wa lls. Most boards and asse mblies plug onto[...]

Opera ting Informa tion 2- 4 2715 Spectrum Analyze r Service Manua l Replaci ng the Fuse Replace the line f use with a 2 A Slow B low fuse. Select ed Component s Some components a re spec ifically se lected to me et T ektronix spec ifications. These compone nts are shown in the parts list. Selecte d value compone nts are ide ntified in the pa rts l[...]

Opera ting Informa tion 2715 Spectrum Analyze r Service Manua l 2- 5 A menu of se lections may be displayed by pre ssing its front pane l push button. Menu push buttons are grouped togethe r under the MENUS block. See Fig- ure 2- - 1 and the Menu Structure be ginning on the following page . Figure 2 - 1: 2715 Fr ont Panel Keys[...]

Opera ting Informa tion 2- 6 2715 Spectrum Analyze r Service Manua l 0 FREE RUN 1 INTERNAL 2 EXTERN AL 3L I N E 4T V L I N E 5 TV F IELD SWEEP MEN U 6 SWEE P RA TE 7 MANUAL S CAN 8 SYNC POLAR ITY 9 SETU P T ABLE HORIZONT AL LINE TRIGG ERING 0 CONTINUOUS 1 KNOB SELEC T ABLE 2 KEYP AD EN TERED LINE 3 KEYP AD E NTRY 4 TV LINE ST ANDARD SWP/ TRG Menu S[...]

Opera ting Informa tion 2715 Spectrum Analyze r Service Manua l 2- 7 1 STOR ED SETTI NGS / DI SPLA YS 2 KEYP AD EN TERED SETTI NGS 3 NORMAL IZA TIONS 4 SYSTEM C ONFIGU RA TION 5 IN STR DIAGN OSTICS/ ADJUST MENTS 6 SERVI CE REQUEST 9M O R E 0 LAST POWER -DOWN 1 FA CTORY DEF AUL T POWE R-UP 2 USER DE FINED POWE R-UP 3 User D efined 4 User D efined 5 [...]

Opera ting Informa tion 2- 8 2715 Spectrum Analyze r Service Manua l 1 STOR ED SETTI NGS / DI SPLA YS 2 KEYP AD EN TERED SETTI NGS 3 NORM ALIZA TI ONS 4 SYSTEM C ONFIGU RA TION 5 INSTR DIAG NOSTICS/A DJUSTMENTS 6 SERVI CE REQUEST 9M O R E 0 DIAGN OSTICS * 1 EXTE NDED DIAGNO STICS * 2 MANUAL A DJUSTMENTS 3 DEBU G MENU * 4 IN TERNAL PARAMETERS 5 SERV[...]

Opera ting Informa tion 2715 Spectrum Analyze r Service Manua l 2- 9 0 RECENTE R CHANNEL xx 1 CAR RIER LEVEL - - - A VG POW ER 2 CAR RIER SUR VEY 3 MOD ULA TION D EPTH 4 AURAL ( FM) DEVIA TION 5 CARRIER/NO ISE -- DES IRED/UNDESIRE D 6 HUM/LFD 7 FR EQUENCY R ESPONSE 8 CA TV MEA SUREMENTS S ETUP 9M O R E 0 RU N LEVELS - POWER 1 STORE CURRE NT RESUL T[...]

Opera ting Informa tion 2- 1 0 2715 S pe ctrum Analyze r S e rvice Manua l 0 RECENTE R CHANNEL xx 1 CAR RIER LEVEL -- AVG POWER 2 CAR RIER SUR VEY 3 MOD ULA TION D EPTH 4 AURAL ( FM) DEVIA TION 5 CARRIER/NO ISE -- DES IRED/UNDESIRE D 6 HUM/LFD 7 FR EQUENCY R ESPONSE 8 CA TV MEA SUREMENTS S ETUP 9M O R E 0 RUN HUM/LFD 1 STORE CURRE NT RESUL TS 2 DI [...]

Opera ting Informa tion 2715 Spectrum Analyze r Service Manua l 2- 1 1 0 RECENTE R CHANNEL xx 1 CAR RIER LEVEL -- AVG POWER 2 CAR RIER SUR VEY 3 MOD ULA TION D EPTH 4 AURAL ( FM) DEVIA TION 5 CARRIER/NO ISE -- DES IRED/UNDESIRE D 6 HUM/LFD 7 FR EQUENCY R ESPONSE 8 CA TV MEA SUREMENTS S ETUP 9M O R E 0 EXIT CA TV MEA SUREMENT MO DE 1 CH ANNEL TABLE [...]

Opera ting Informa tion 2- 1 2 2715 S pe ctrum Analyze r S e rvice Manua l 0 ADJ ACENT C HANNEL LEAKAGE 1 VIEW MO DULA TION ( FIELD) 2 VIEW MO DULA TION ( LINE) 3 VIEW P ICTURE 4L I S T E N 5 CTB 6C S O 7 CROSS MO DULA TION 8 IN -CHANN EL RESPONSE 9M O R E 0 RUN CTB 1 STORE CURRE NT RESUL TS 2 DI SPLA Y RESUL T S 3 PRINT CURRENT LEVELS* 4 PRI NT ST[...]

Opera ting Informa tion 2715 Spectrum Analyze r Service Manua l 2- 13 0 ADJ ACENT C HANNEL LEAKAGE 1 VIEW MO DULA TION ( FIELD) 2 VIEW MO DULA TION ( LINE) 3 VIEW P ICTURE 4L I S T E N 5 CTB 6C S O 7 CROSS MO DULA TION 8 IN -CHANN EL RESPONSE 9M O R E 0 RUN CROSS MODUL A TION 1 STORE CURRE NT RESUL TS 2 DI SPLA Y RESUL T S 3 PRINT CURRENT RE SUL TS[...]

Opera ting Informa tion 2- 1 4 2715 S pe ctrum Analyze r S e rvice Manua l 0 BANDWIDTH MO DE 1 CARRIER TO NOIS E 2 NOISE NO RM ’ D 3 SIGNA L SEARCH MENU 4 OCCUPIE D BW 7 FM D EVIA TION M ODE 8 CA TV MEA SUREMENT MODE 9 SETU P T ABLE 0 BEGIN F REQ 1 END FREQ 2 ST ART TE ST 3 DI SPLA Y RESUL T S CA TV/ APPL Appli cati ons Menu Str uctur e 0 DB DOW [...]

Opera ting Informa tion 2715 Spectrum Analyze r Service Manua l 2- 15 0 DIGI T AL/ANALOG 1 ENSEM BLE A VERAGING 2 B, C MINUS A 3 B, C MINUS A OFFSET TO 4 ACQUIS ITION MODE 5T I T L E M O D E 6 GRA TICULE ILLUMINA TION 7 DI SPLA Y SO URCE (A M) 8 DI SPLA Y LINE 9M I N H O L D 1 IN ITIATE A VERAGIN G 2 TER MINATE A VERAGING 3M A X 4 MEAN 5M I N 6 MAX[...]

Opera ting Informa tion 2- 1 6 2715 S pe ctrum Analyze r S e rvice Manua l 1 PREAMP 3 REF LEVEL U NIT 4 1ST MX R INPUT L VL 5 RF A TTENUA TION 6 EXTE RNAL A TTEN/A MPL 9 CAL SIG @ 100MH Z 18.8D BMV 0D B M 1 DBMV 2D B V 3 DBUV 4 DBUW 5 DBU V/M IN WF M x 9 DBU V/M SETUP I N P U TM e n uS t r u c t u r e 0O N / O F F 1 A TTEN/A MPL ENTRY 0 EDI T ANTEN[...]

2715 Spectrum Analyze r Service Manua l 3- 1 Theory of Operation This section de scribes the 2715 circuitr y . The sec tion begins with a func tional descr iption of the major circuit bloc ks. This is followed by more detailed descri ptio ns of the circu itry wi thin each b lock. Whil e readi ng thes e des cripti ons, ref er to the c orresponding d[...]

Theo ry of Op eration 3- 2 2715 Spectrum Analyze r Service Manua l A2 5 Ω resi stor wi thin t he RF IN PUT co nnecto r ass embly i s placed in s eries with the signal path. This transfor ms the connec tor to a 75 Ω im pedance fo r exter nal signal conne ctions. All R F signal c onnections within the 2715 ( S MA and SMB connec tors) have a 50 ?[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 3 The S pectrum A nalyzer accept s an electrical s ignal as i ts i nput and displays the signal ’ s fr equency c omponents on a CR T . S igna ls are a pplied direc tly to the RF INP UT . The display of the input signal appear s on the CR T as a graph wher e the horizonta l axis is f[...]

Theo ry of Op eration 3- 4 2715 Spectrum Analyze r Service Manua l The RF Mother boar d assembly conta ins a 2 GHz 2nd LO, a 2nd Converte r , sever al gain stage s, a 5 MHz re solution bandwidth filter , and a 3rd Conver ter . The 2nd Converte r down conver ts the 21 10 MHz 1st IF to 1 10 MHz. The 3r d Converter down converts the 1 10 MHz 2nd IF to[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 5 The Display Stora ge board is c apable of storing four wa veforms of 512 bytes each, fo ur pages of tex t of 512 by tes each, an d up to tw o markers. An y combi na- tio n of waveform s and text m ay be disp layed on t he CR T . If any wav eforms are being displaye d, the text porti[...]

Theo ry of Op eration 3- 6 2715 Spectrum Analyze r Service Manua l This is a precision, tempera ture controlle d, quartz cr ystal oscillator that provide s the re fere nce ar ound which all instrume nt freque ncy rela ted perf ormance revolve s. It is designed for maximal fr equency sta bility over tempe rature and time, with absolute freque ncy ac[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 7 1 st LO B uffe r The 1st LO B uf fer c onsists of a Levele d Amplifier a nd a Phase Gate Dete ctor . The Levele d Amplifier provides the LO input drive for the 1st Mixer . The P ha se Gate De tector logs 1st LO dr ift. That informa tion is then used for freque ncy correcti ons. Swee[...]

Theo ry of Op eration 3- 8 2715 Spectrum Analyze r Service Manua l Displ ay Syst em The Display System c onsists of the V ertic al Display cir cuit, Horizontal Displa y circ uit, and Z Axis circuit. See Figure 3- - 2. The Display System has three possible display modes. The active spe ctrum display mode displays the incoming signal. The static spec[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 9 Circuit D escription The following se ctions provide de tailed cir cuit descr iptions and is arr anged to follow the input signal flow . While rea ding these desc riptions, ref er to the corr esponding diagra ms in Section 9: Diagrams . Atte nu ato r a nd 1 st Convert er The Attenua[...]

Theo ry of Op eration 3- 1 0 2715 S pe ctrum Analyze r S e rvice Manua l A rela y switch at the input of the Step Attenuator selects the R F input signal or the interna l calibrator signa l. S e e F igur e 3 - - 3. Since the calibra tor signal comes into the Step Attenua tor assembly a head of the attenuator s, it can be use d to verify t he accura[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 1 1 The 1st Converte r conver ts the incoming RF signals to the 1st IF . Input signa ls are applied through the S te p Attenuator a nd Low P a ss F ilte r and through the 1st LO Buffe r Amplifier . The 1st Converter r ecei ves th e RF s ignal t hr ough the Low Pass Filter and a 1st LO[...]

Theo ry of Op eration 3- 1 2 2715 S pe ctrum Analyze r S e rvice Manua l RF Mot her Boar d and Phase Locked 2nd LO This section c ontains a deta iled descr iption of the RF Mother boar d and Phase Locked 2nd Loc al Oscillator . The RF Mother boar d converts the 1st IF freque ncy to 10 MHz in two fr equency conver sions. The first conver sion (2nd m[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 13 The 1 10 MHz 2nd I F is amplified a nd divided along two paths. One pa th is through a buf fer amplif ier to the sweep board wher e the signal is availa ble to the satellite demodulator . The sec ond path is through a PIN a ttenuator whic h sets the gain of the module. The signal t[...]

Theo ry of Op eration 3- 1 4 2715 S pe ctrum Analyze r S e rvice Manua l 1 10 MHz Bandpass Fil t er . This filter is a 5th order , shunt resona tor B utte rworth filter . 3rd Mixer . U6 65 and it s associ ated circui try make up t he 3rd mixer . Output Am pl ifier . This IF amplifier c onsists of a common emitter tr ansistor (Q670) with both se rie[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 15 When the F M c oil is used to sweep the oscillator , the rela y on the Inter face boa rd closes a nd couples a la rge capac itor (two ca pacitors in pa rallel) across the main coil. The capac itors lower the noise bandwidth of the main coil driving circ uit while the FM coil is in [...]

Theo ry of Op eration 3- 1 6 2715 S pe ctrum Analyze r S e rvice Manua l The direc tional coupler couple s approximately - - 15 dB m of the amplif ied LO signal to the de tector . The couple d signal is then amplitude detecte d, and the resulta nt DC level fed to the noninverting input of a compara tor , where it is comp ared to a reference DC lev [...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 17 Figure 3- - 8 is a block diagram of the Refe rence Osc illator section. Amplitude Calibrator > Heater Microprocessor Inter face Output Buf fer Output Buf fer Input Buf fer Power Supply Regulation CLKI +10 V +5 V − 11 V DA T AI DA T A0 RFLA T CH CLK0 100 MHz Oscillator CAL Enab[...]

Theo ry of Op eration 3- 1 8 2715 S pe ctrum Analyze r S e rvice Manua l The h eater circui t main tains a co nstan t 15 V p otent ial acros s the h eater elemen t rega rdless of powe r supply ripple. The c ircuit is shown in Figure 3- - 9. 22.1 k Ω +5. 2 V -- 1 1 V +5 V − 11 V − 11 V Heater 6.91 k Ω 10 k Ω 10 k Ω 22.1 k Ω 10 k Ω 27[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 19 R t 82.5 Ω C m L m C p L t C t Q1 Q2 +5 V 221 Ω r e1 ≈ 8.3 Ω r s =5 0 Ω r e2 =5 . 7 Ω Figu re 3 - 10 : Osc illato r AC Equivalent At oscillation, the loop ga in is unity and the phase 0 ° . If the phase dela y of Q1, Q2, or the tank c hanges, the oper ating fre quency [...]

Theo ry of Op eration 3- 2 0 2715 S pe ctrum Analyze r S e rvice Manua l r s <50 Ω 47.5 Ω 20 nH 3.92 k Ω R t +5 V 47.5 Ω 3.92 k Ω 82 pf 1k Ω − 8.8 V − 8.8 V − 8.8 V 0.1  f Q1 Q2 r e2 ≈ 5.7 Ω r e1 ≈ 8.3 Ω 82.5 Ω 1.5 k Ω Figu re 3 - 1 1: Os cillat or DC Equival ent The voltage swing require d across the tank circ u[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 21 Microprocessor Interf ace. The Micr oprocessor I nterfa ce is used by the Micropr o- cessor board to communic ate with the Ref erenc e Oscillator board. An 8 bit input shift re gister contr ols the opera tion of the boar d, and an 8 bit output shift r egister contains f requenc y c[...]

Theo ry of Op eration 3- 2 2 2715 S pe ctrum Analyze r S e rvice Manua l In wid e sp ans (5. 1 MHz/d iv or greater), the cent er frequency is s et coarsely b y setting a suitable bias cur rent in the main coil. F ine incr ements of the cente r fre quency ar e set by appr opriate c urrents to the F M c oil. In this mode, sweeping over th e span is a[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 23 This supply c onsists of VR160, U166, U174, Q170, Q674, and associa ted components. VR160 is a tempera ture compensa ted refe rence diode tha t define s the output voltage . U166 and Q170 constitute a buf fe red sca ling amplifier to provide the desir ed - - 5 V output at suffic ie[...]

Theo ry of Op eration 3- 2 4 2715 S pe ctrum Analyze r S e rvice Manua l This voltage a cross R926 define s the fee dback cur rent to the summing junc tion of the ope rational a mplifier . This circ uit force s 1st LO main coil cur rent to be proportiona l to the sum of the c urrents f rom the var ious control sourc es, which is descr ibed later . [...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 25 When the FM coil driver is in use (instrument not phase locke d) there ar e two potential signa l sources summe d into the driver circuit. One tha t is always prese nt is induced by DAC U850A and subseque nt circuits. It is ste ered into U821 by switch U757A, and ser ves to finely [...]

Theo ry of Op eration 3- 2 6 2715 S pe ctrum Analyze r S e rvice Manua l down the strobe driver a mplifier in the 1st LO B UFFER module. Also, U240 serves a s a count sele ctor switch. It selects eithe r the LFVCO signal or the 1s t LO beat si gnal (from t he PLC FC board ) for c ounting by the micr opro- cessor . R 241 is part of a TTL to EC L lev[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 27 This allows for 1st LO drift or user change s to the center f requenc y setting without having to drop a nd rea cquire loc k for ever y change. If Q652 is tur ned on by the signal UNLKI ND (signifying that the inner loop is unlocked) , both INCR MAIN and DCR MAIN are tur ned on sim[...]

Theo ry of Op eration 3- 2 8 2715 S pe ctrum Analyze r S e rvice Manua l FSTROB E FM MAIN Main DAC SWP DAC DIG 1st LO Beat to Counter Phase Gate Harm Gen VCO Module Summing and Fixed Scaling VOFS 1st LO 1st LO to 1st Converter PLL DAC VREF DIG Microprocessor Serial Out Serial In FM Coi l Driver FM DAC DIG Summ ing and Fixed Scaling Main Coil Driver[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 29 FSTROB E FM MAIN Main DAC SWP DAC DIG 1st LO Beat to Counter Phase Gate Harm Gen VCO M odule Summing and Fixed Scaling VOFS 1st LO 1st LO to 1st Converter PLL DAC VREF DIG Microprocessor Serial Out Serial In FM Coi l Driver FM DAC DIG Summing and Fixed Scaling Main Coil Driver Summ[...]

Theo ry of Op eration 3- 3 0 2715 S pe ctrum Analyze r S e rvice Manua l FSTROB E FM Main Main DAC SWP DAC DIG 1st LO Beat to Counter for Lock V e rific ation Phase Gate Harm Gen VCO Module (Strobe Gen) Summing and Fixed Scaling VREF 1st LO 1st LO to 1st Converter N-F Strobe PLL DAC VREF DIG Microprocessor Serial Out Serial In FM DAC DIG Main Coil [...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 31 In phase locke d spans, its output is used to fine tune the VCO frequenc y . In either case its output pa sses through U852, which has a n output range of 0 to +5 V . U845 sums that with an of fset a nd provides gain so tha t the output of U845 range s from - - 5 V to +5 V . This s[...]

Theo ry of Op eration 3- 3 2 2715 S pe ctrum Analyze r S e rvice Manua l Thi s is the lo op back pat h referred to earlier for check ing th e in terface. Th is registe r may also be loaded with up to eight bits of paralle l data for subsequent seria l transfe r to the micr oprocessor . Only thre e bits are used. B its 7 and 8 a re the signals (I NC[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 33 A0, A1, and A2. Addr ess lines for DAC interna l registe r sele ction and control. UPD. Used for simultaneous tra nsfer to DAC output register s. DB0 ’ ,d B 1 ’ ,d B 2 ’ , and dB3 ’ . Dat a li nes for DAC U95 0 (A and B). DB0, dB1, dB 2, a nd dB3. Data lines for DAC U850 (A[...]

Theo ry of Op eration 3- 3 4 2715 S pe ctrum Analyze r S e rvice Manua l RF OPTI ONS 1d BS t e p 0 2 4 6 8 10 5M H z 300 kHz 30 kHz 3k H z 10 MHz/ − 10 dBm to Log Amp PIN Diode Attenuat or 10 MHz/ − 20 dBm from RF Mother Board 1 MHz, 100 kHz, 10 kHz, 1 kHz, and 300 Hz Filters 10 10 10 10 10 Figure 3 - 15: V ar i able Resolution Modul e Diagram [...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 35 The 10 d B gain s tep stag es incorp orate a transfo rmer feedback amp lifier . Th ese stages have a pproximately 0.5 dB of loss or 9. 5 dB of gain, for a net dif fere nce of 10 dB. When the ga in step is selec ted, the signal is route d through the amplifie r for a gain of appr ox[...]

Theo ry of Op eration 3- 3 6 2715 S pe ctrum Analyze r S e rvice Manua l 10 MHz IF from VR 10 MHz IF to VR 300 Hz Filter 1 1.5 dB 1 1.5 dB 1 kHz Filter 1 1.5 dB 10 kHz Filter 1 1.5 dB 100 kHz Filter 1 1.5 dB 1 1.5 dB 1 MHz Filter 1 1.5 dB Figure 3 - 16: RF Options Diagram[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 37 The boar d provides the r esolution bandwidths used to f ill in between f ilter value s installed within the V a riable Resolution module . The bandwidth ra nge is 1 MHz to 1 kH z in decade step s, and 3 00 Hz. E ach f ilte r path consists of a switchable amplifie r and bandpass fi[...]

Theo ry of Op eration 3- 3 8 2715 S pe ctrum Analyze r S e rvice Manua l Lo g Am plifie r The Log Amplifier system is a high perfor mance, interme diate amplifie r system that provide s display laws of line ar dete ction and logar ithmic detec tion of the incoming signal. The log displa y has scale factor s of 10 dB/div , 5 dB/div , and 1 dB/div . [...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 39 The core of the logging stage is a pair of AD640s. The AD640 uses five casc aded limiting amplif iers to appr oximate a loga rithmic re sponse to an input signal of wide dynamic ra nge and wide bandwidth. The two AD640s are used in a par allel/summing oper ation. The input signal t[...]

Theo ry of Op eration 3- 4 0 2715 S pe ctrum Analyze r S e rvice Manua l Immedia tely following the V ideo Filters is the Scale Factor a mplifier . The gain of the Scale Factor a mplifier ca n be set to 1.1, 2. 2, 5.5, or 1 1 corr esponding to 10 dB/div , 5 dB/div , 2 dB/div , or 1 dB/div . The linear function is done with the gain set to 1.1. The [...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 41 H Provides for the ability to plac e up to two marke rs on a displaye d wavefor m H Impleme nt and display a B,C - - Save A waveform H Display re adout informa tion on the scre en H Provide up to 28 Kbytes of nonvolatile storage a rea H Provide two dif fer ent wavef orm acquisition[...]

Theo ry of Op eration 3- 4 2 2715 S pe ctrum Analyze r S e rvice Manua l PEAKDIS_L. In the Normal Mode this bit selects one of the two acquisition modes. Either the Max Peak, when low , or the Min/Max a lgorithm when high. In the Enhanc e Mode this bit is used in c onjunction with the ACQM0 bit of Mode Control Register 2 to invoke S a mple and Min [...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 43 POS1. This bit, along with the HLF/FLL_L bit (calle d P OS0 on the sc hematics) in Mode Control Register 1, determine s the position on the CR T for the B,C - - Save A display . The Normal Mode does not use this bit. T able 3- - 4 gives the positions on the screen that ar e availab[...]

Theo ry of Op eration 3- 4 4 2715 S pe ctrum Analyze r S e rvice Manua l T able 3 - 6: Mode Control Register 2 ( Cont.) Bit Number Description Acti vi ty Level Mnemoni c 4 MKRWFM0 Low Markers on Displ ay A 3 UPDA TED_L Low Di splay D updating, not i n save mode 2 UPDA TEC_L Low Di splay C updating, not i n save mode 1 UPDA TEB_L Low Di splay B upda[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 45 T able 3 - 8: Enhanced M ode MKRWFM[1..0] Bi t Assignment MKRWFM3 MKRWFM2 M ar ker 2 on Wavefor m... 00 Wave form A 01 Wave form B 10 Wave form C 11 Wave form D UPDA TED_L. This bit, when low , allows the ve rtical da ta to be store d in W aveform D. When the bit is high, the write[...]

Theo ry of Op eration 3- 4 6 2715 S pe ctrum Analyze r S e rvice Manua l TEX T3. T his b it, w hen hi gh, p laces pag e three of t he four p ossi ble rea dout pages on the CR T . Any number of te xt pages may be displayed on the CR T , however the re sulting display may not be r eadable , and will flicke r sever ely . TEX T2. Th is bit, w hen high [...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 47 Marker Position Registers. There ar e two Marke r P osition Register s. One register for Mar ker 1 and a second registe r for Marke r 2. Marker Position Register 1 uses I/O port loc ations 0x0FC00 through 0x0F DFF . Marke r Position R e gister 2 uses I/O port loc ations 0x0FE00 thr[...]

Theo ry of Op eration 3- 4 8 2715 S pe ctrum Analyze r S e rvice Manua l MKR 2_L T . Thi s sign al becomes act ive (hig h) at any access to t he Marker 2 port addre sses (I/O por t addresse s 0xF E00 thr ough 0x FFFF). Thi s sign al a lso c aus es the UPREQ signal to become active . T able 3- - 1 1 is the memory map f or the Display Stora ge board.[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 49 Control Register s . The re are f ive control registe rs on the Display Storage boar d which ar e used to set the various oper ating modes for the board. All of the control re gisters are r ead/write r egisters, with the exception of the Scroll Register . The Control Register secti[...]

Theo ry of Op eration 3- 5 0 2715 S pe ctrum Analyze r S e rvice Manua l BCL K BA <19. 0> WR_L UPREQ PORTVEC UPGRNT_L WRDA TE N 0ns 500ns 1000ns 1500ns 2000ns 2500ns 3000ns Figure 3 - 17: Timing Di agr am for a T ypical Write to t he Control Register The CPU starts a write cyc le to the Display S tora ge board, presenting the appropr iate add[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 51 The compa rators a re conta ined in an LM319, U9. The top (UP) compa rator deter mines if the summing node is greate r than the 49. 5 mV ref erenc e point. The bottom (DN) c omparator determine s is the summing node is less tha n the 0.0 V ref erenc e. The outputs of these two comp[...]

Theo ry of Op eration 3- 5 2 2715 S pe ctrum Analyze r S e rvice Manua l voltage by a bout one third. The signal is the n passed through a diode, C R2 and an emitte r follower , Q3, and then into U1, an MC10319 Flash ADC running at 2.4576 MHz. T ransistor , Q3, provide s the low input resista nce re quired by the ADC . Ei ght bi ts of verti cal dat[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 53 At the end of a horizontal bin the conte nts of the Max Accumulator will be written to wa veform me mory . If the acquisition mode is Min Pea k the same c omparisons occ ur as in Max Pea k acquisition mode , except that the Min Accumulator is used. At the end of a horizonta l bin t[...]

Theo ry of Op eration 3- 5 4 2715 S pe ctrum Analyze r S e rvice Manua l BCL K BOB ACQGRNT_L WE_L OE_L CEO_L 0ns 500ns 1000ns 1500ns 2000ns 2500ns CE 1_L RAMD<7. .0> RAMAD<14..0> Figure 3 - 19: Sequence of Events W hen W r i t i ng Dat a to the Waveform Memory The two DS1210 ’ s, U6 and U28, are used to provide ba ttery bac kup power [...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 55 T able 3 - 14: Page Number / Wavefor m Relation Page Number Re fers to 0 Wave form A 1 Wave form B 2 Wave form C 3 Wave form D 4 T ext Page 1 (Readouts) 5 T ext Page 2 6 T ext Page 3 7 T ext Page 4 If the p age to b e disp layed i s a wavefo rm then t he addres s for th e waveform [...]

Theo ry of Op eration 3- 5 6 2715 S pe ctrum Analyze r S e rvice Manua l Row 15 Row 1 Row 0 Col 31 Col 1 Col 0 Figure 3 - 20: How a V ert i cal Scan is Perfor med Figure 3- - 21 shows the display of a single vector of a wave form.[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 57 BCL K DSPRBQ DSPGRNT _L RAMAD<14..0> RAMD <7..0 > VWFM <7..0 > VDAC< 7..0 > 0ns 500ns 1000ns 1500ns 2000ns 2500ns 3000ns HDAC<8..0> DSBL NK_L 3500ns Figure 3 - 21: The Display of a Single V ector of a Wavefor m Figure 3- - 22 shows the display of a sin[...]

Theo ry of Op eration 3- 5 8 2715 S pe ctrum Analyze r S e rvice Manua l Of fset, (HOO) R 98, a re pr ovided. In a ddition part of U34, a n analog switch, and another r esistor are a dded in para llel to the fee dback resistor of the ope rational amplifie r to allow gain r eduction while the readouts a re being dr awn. This will allow the wavef orm[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 59 The Error Amplif ier compar es the curre nt state of the Inte grator Circuity output and the c urrent input volta ge from the DAC and gener ates an e rror volta ge. This err or voltage is the n fed into a high c urrent buf fe r made up of Q4, Q5, and CR 7. CR7 and R179 are used to [...]

Theo ry of Op eration 3- 6 0 2715 S pe ctrum Analyze r S e rvice Manua l The Power up reset cir cuit consists of a TL7705 P ower Super visor IC. This IC monitors the +5 V supply a nd genera tes a re set signal on power up. The capa citor , C101, is used to delay the rising edge of B DRST_L for a bout 50 ms. This ensure s that if the +5 V supply f a[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 61 8/D 8/D 8/D AD0 − AD7 Internal P arallel Bus 8/D Buf fer (Bidirectional) 8/D 14.7456 MHz RAM/ROM (4 Each) Inter rupt Ti mer Audio Timer Serial Bus Inter face Status Buf fers Buf fer (Bidirectional) Clock Generator CLK88 Address Latches (3) Inter rupt Controller Memory Select Demu[...]

Theo ry of Op eration 3- 6 2 2715 S pe ctrum Analyze r S e rvice Manua l CFC Internal Parallel Bus 8/D 28-Bit Presettable Event Counter U290, U480, U470 6/A Legend N/A = N Address N/D = N Data Lines Status Buf fer U395, U380A, U385 Enable/Buf fer & Level Shifters 8/D Demultiplexer U530A, U585 8/D 24-Bit Presettable Counter U390, U470 8/D 29-Bit[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 63 The Clock Gene rator c hip (U360) is an NEC  PD7101 1. The purpose of this IC is to gener ate the c lock for the Microproc essor boar d and synchroniz e the insertion of wait states into the C PU. The Clock Genera tor part of the IC uses a 14.7456 MHz crystal (pa rallel resona n[...]

Theo ry of Op eration 3- 6 4 2715 S pe ctrum Analyze r S e rvice Manua l T able 3 - 15: Interr upt Controller I nput Connections (Cont.) Interrupt Number System Connection IR5 Digital Opti ons Board IR6 Digital Opti ons Board IR7 Progr am mable I nterval Timer 1 See the NEC  P D71059 (or Inte l 82C 59) da ta sheets for more deta iled informa- ti[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 65 Reading from a module begins with the module reque sting servic e through its ac tiv e low r eq ues t sign al ( FPREQ- - f or th e fr ont pa ne l, ...). Thi s sign al go es in to a prior ity encoder (U780) on the Power S upply Sec ondaries, then pulls the Micropr ocessor board Inte[...]

Theo ry of Op eration 3- 6 6 2715 S pe ctrum Analyze r S e rvice Manua l Allowance s have bee n made for on board progr amming of the EPROM device s. On board pr ogramming is done by r emoving J528 (and/or W528) and the n supplying the appr opriate timing a nd voltage signals to pr ogram the EPROMs through connec tor J550. There are two j umpers (1[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 67 The ref erenc e/period counte r consists of devices U295, U380, and counter one of U470. The refer ence counte r is fed fr om the 100 MHz R e fere nce Oscillator . The IF counter consists of devic es U370 and counter two of U470. The IF counter is fed fr om the IF input and ra nges[...]

Theo ry of Op eration 3- 6 8 2715 S pe ctrum Analyze r S e rvice Manua l The Micropr ocessor re quires sever al signals. A brief desc ription of these signals, by connec tor , is given in T able 3- - 18, T able 3- - 19, and T able 3- - 20. T able 3 - 18: Power Supply and Serial Bus Connector (J10) Signal Names and Definitions Signal Name Descriptio[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 69 T able 3 - 19: Microprocessor Inter face Connector ( J550) Signal Nam es and Definitions Signal Name Description Source Module BUSDIS Bus Disabl e (TTL) : Di sables microprocessor address bus and control signal s Display St orage Digit al Options ALE Address Latch Enable (TTL): Sig[...]

Theo ry of Op eration 3- 7 0 2715 S pe ctrum Analyze r S e rvice Manua l T able 3 - 20: Microprocessor Count er Section Connector Signal Names and Definitions Signal Name Description Source Module CFC Center Frequency (J180): Signal from the CFC board to be counted Center Frequency Control OPTION Opti onal Input (J185): Signal from an install ed op[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 71 T able 3 - 22: Pinout for the 24 -Pi n DIN Connector (J10) Between the Microprocessor Boar d, Power Supply Interconnect, and Ser ial I /O Pin No. Pin Nam e 1 DETVID 2 — KEY — 3 SWPGA TE 4 POK 5 REQI - - 6 UP AUD 7 CLKI - - 8 CLKO 9 DA T AI 10 DA T AO 11 ACKI - - 12 LOAD 13 +5 V[...]

Theo ry of Op eration 3- 7 2 2715 S pe ctrum Analyze r S e rvice Manua l T able 3 - 23: Pinout for the Microprocessor Board T est Connector (J150) ( Cont.) Pin No. Pin Name 5 A18 6 A19 7 GND 8 GND 9 RD - - 10 HOLD - - 11 HOLDA 12 WR - - 13 IO/M - - 14 DIR 15 DEN - - 16 GND 17 INT A - - 18 GND 19 RDY 20 RST 1B GND 2B A14 3B A13 4B A12 5B A1 1 6B A10[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 73 T able 3 - 23: Pinout for the Microprocessor Board T est Connector (J150) ( Cont.) Pin No. Pin Name 19B ALE 20B GND T able 3 - 24: Pinout for the 50 Pin Connector (J550) Between the Microprocessor , Display Storage, and Digital Opti ons Boards Pin No. Pi n Name Pin No. Pin Nam e 1 [...]

Theo ry of Op eration 3- 7 4 2715 S pe ctrum Analyze r S e rvice Manua l GPI B, RS - 232, Real Ti me Clock, NVRAM, and Gat ed Measurem ent Functi ons The Digital Options module provides both the RS - - 232 and GPIB interfa ce and gated swe ep capa bility . The fe atures a re: H Gated me asureme nt functions to provide in service measure ment capa b[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 75 The Real T ime Clock (R TC) is an Oki Semiconductor MSM62X42BRS clock/c alendar (U23). This IC uses an inte rnal 32,768 Hz cloc k which is divided down to 1 Hz. This one her tz clock is the n used to drive the time registe rs. Each time registe r consists of some multiple of ten of[...]

Theo ry of Op eration 3- 7 6 2715 S pe ctrum Analyze r S e rvice Manua l The batte ry backup c ircuits consist of a 2.8 V lithium battery ( B T1) , and two DS1210 (U16 and U17) powe r monitor chips. U17 supplies ba ckup power f or the RAM (U8), likewise U16 supplies the real time clock (U23) . The DS 1210 chips supply power from the power supply wh[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 77 There are te n video gating contr ol register s on the Digital Option module. All of these contr ol registe rs are write only re gisters, with the exce ption of misc. gating control re gister (addr ess 0x210). The other nine re gisters contain line count and pixel count inf ormatio[...]

Theo ry of Op eration 3- 7 8 2715 S pe ctrum Analyze r S e rvice Manua l This circ uit takes in HCMOS logic levels a nd produces sha ped and rise time controlle d control signal( s) having the c harac teristics r equired by the IF gate circ uit. The IF_GA TE_EN signal is first pa ssed through CMOS inverter U6 powere d from a loc ally regula ted +5 [...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 79 The tuning voltage path from the DAC to its varac tor includes a temper ature correcti on from s ensor (U 9). The 45.7 MHz signal from the SA W filter is prese nted to the MC44301 demodulator (U16). This device passes the signa l through an AGC controlle d IF amplifie r , then to a[...]

Theo ry of Op eration 3- 8 0 2715 S pe ctrum Analyze r S e rvice Manua l The lock c ontrol circ uitry is used to switch the AF C loop (me ntioned in the downconver ter descr iption) ON or OFF as require d in the course of getting the video demodula tor locked onto a new TV channe l. The AFC loop needs to be reset by t he inst rument fi rmware on ce[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 81 When th is vol tage reaches app roxim ately 1 V , an RS fli p flop in side U4 60 resets an d the ho ldoff cycle is fin ished . The sw eep gate log ic circuit i s then enab led to accept another tr igger and, if in the free run mode, another swe ep is then started. T ransistor Q574 [...]

Theo ry of Op eration 3- 8 2 2715 S pe ctrum Analyze r S e rvice Manua l The video monitor mode is gener ated by using the ve rtical sync outputs of the sync sepa rator a nd HC LK to c ontrol an auxilia ry sweep ge nerator formed by U560B and its associa ted components. This ra mp genera tor (U560B) provide s the v ertical s weep wh ile th e normal[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 83 All of the c ontrol informa tion is shifted in through f our shift re gisters U21 1, U312, U610, and U520. Front Panel The Front Panel acts as an interf ace betwe en the user and the instrument. These circ uits translate operator actions on fr ont panel contr ols into data for the [...]

Theo ry of Op eration 3- 8 4 2715 S pe ctrum Analyze r S e rvice Manua l The FPREQEN - - signal is used to e nable the f ront panel r equest output buf fer . If FPR EQEN- - is in the inactive state , the front panel ser vice reque st line to the micropr ocessor will always be ac tive (always re questing service ). The CLKIEN- - signal is reser ved [...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 85 5. St eps 2 and 4 are repeated , retrig gering ei ther the P OS or R OS, unt il the switch has sta bilized in the c losed position. 6. Each single shot then times out appr oximately 50 ms af ter the la st valid trigger . 7. Now the switch is r elease d and a nega tive edge is pr es[...]

Theo ry of Op eration 3- 8 6 2715 S pe ctrum Analyze r S e rvice Manua l The three c onditions illustrated in F igur e 3 - - 27 are a s follows: 1. Switch presse d and rele ased inside the 50 ms time of POS. 2. Switch presse d and rele ased well a fter both the P OS and ROS have time d out. 3. Switch presse d and rele ased with the POS becoming ina[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 87 5. After the f irmware r ecognize s the reque st for ser vice, the F P ACK- - line is set low , which enables the DA T AI and CLKI tristate buf fer s. 6. The data is then clocke d out of the switch ma trix shift re gisters. 7. After the da ta has been clocke d out, the F P ACK - - [...]

Theo ry of Op eration 3- 8 8 2715 S pe ctrum Analyze r S e rvice Manua l The Power Supply primary circ uits consist of the AC Input circ uit, a P ulse W idth Modulator ( PWM), an Inver ter , and a Fre quency Lock c ircuit. See Figure 3- - 28. AC Input. Input power is a pplied through an EMI line filter , a line fuse , an on/of f switch, additional [...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 89 At power up, ther e is a dela y until R185 char ges C290 to approximate ly 20 V , at which time Q690 a nd Q691 turn on to supply power to the P W M IC. The capa citor provides dr ive curr ent until the PWM output (TP293) r eaches 6 0 V relat ive t o specia l ground (TP190). Initial[...]

Theo ry of Op eration 3- 9 0 2715 S pe ctrum Analyze r S e rvice Manua l NOTE . For instruments with serial numbers B030000 or abov e , ad e a dt i m e contr ol (DTC) R669 has bee n added which will be used to set the maximum high voltage me asur ed at the –2.75KV test point by vary ing the voltage at pin 1 of U260. New values for C262 and R652 h[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 91 Power Suppl y (Di splay) The Display system consists of the following: H CR T Bias H V ertica l Display circ uit H Horizonta l Display circ uit H Z Axis circ uit Figure 3- - 29 is a block dia gram of the Displa y Amplifier . CRTINTS − VIDZ VIDVER T DSHOR SWP DSVER LOGVI DEO Log A[...]

Theo ry of Op eration 3- 9 2 2715 S pe ctrum Analyze r S e rvice Manua l The C R T is bias ed as follo ws: Cathode - - 2750 VDC Heate r - - 2750 VDC, 6. 2 V RMS Grid - - 2880 VCO Accelerat or 24 VDC Focus - - 2200 to - - 1925 VDC Astigmatism 1 15 to 0 VDC D3, D4 ave 24 VDC D1, D2 45 VDC Geo mesh 1 15 to 0 VDC Anode 1 1000 VDC TRACE R OT +30 mA to -[...]

Theo ry of Op eration 2715 Spectrum Analyze r Service Manua l 3- 93 The Horizonta l Display circuit is a parapha se amplifier . Gain and DC of fset (Horiz ontal Position) are set so the signal a t the input of the pa raphase amplifier swings from - - 1 V to +1 V . The output of the para phase amplifie r then drives the horizonta l deflec tion plate[...]

Theo ry of Op eration 3- 9 4 2715 S pe ctrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 4- 1 Perfor mance V erification This section c ontains proce dures for verifying tha t the instrument pe rforms accordi ng to th e charact eristi cs stated i n the Performanc e Requir ement columns in Section 1: Spec ifications . If a failure is found, it is recomme nded that only those c ircuits that do not [...]

Perfo rmance V erificat ion 4- 2 2715 Spectrum Analyze r Service Manua l Equipm ent Requir ed T able 4 - - 1 l ists t he test eq uipm ent recom mended fo r the P erformance V erifica- tion. The charac teristics spec ified are the minimum. If equipme nt is substituted, it mu st meet or exceed t hese speci ficatio ns. T able 4 - 1: Equipment Required[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 3 T able 4 - 1: Equipment Required ( Cont.) T est Equi pment Recommended Character i st i c BNC T Adapter T ektronix Part No. 103-0030-00 Adapter , N M ale to BNC Femal e 50 Ω T ektronix Part No. 103-0045- 00 Adapter , Fem ale-to-Female F 75 Ω T ektronix Part No. 103-0301-00[...]

Perfo rmance V erificat ion 4- 4 2715 Spectrum Analyze r Service Manua l NOTE . Step 9 above exits the CA TV mode and place s the Spectrum Analy zer in a Calibration Mode. This mode must be use d for all steps in this section. Front Panel O perat ion Ref er t o th e 2715 Spectrum Analyze r User Manual for a n explana tion of front panel f unctions.[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 5 Perfor mance re quirement is 7:1 or less for Bandwidths ≤ 1M H z . 1. Recal l default p ower up se ttings by pressing UTIL 1 1 . 2. Select the following settings on the Spec trum Analyze r: FREQUENC Y 100 MHz REFER ENCE LEVEL - - 30 dBm SP AN/DIV 1 MHz RESOLUTION BW 1 MHz VI[...]

Perfo rmance V erificat ion 4- 6 2715 Spectrum Analyze r Service Manua l Perfo rmance requ irement i s ≤ 400 Hz be tween fr equency c orrec tions. 1. Recal l default p ower up se ttings by pressing UTIL 1 1 . 2. Select the following settings on the Spectrum Analyz er: FREQUENC Y 100 MHz REFER ENCE LEVEL - - 30 dBm SP AN/DIV 1 kHz RESOLUTION BW 30[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 7 T able 4 - 3: Sett i ngs f or the Noise Sidebands Check Spa n/Div Resolution Bandwidth 30 X Resol ut i on Bandwidth 1M H z 100 kHz 3M H z 500 kHz 30 kHz 900 kHz 100 kHz 10 kHz 300 kHz 5 kHz 300 Hz 9 kHz Perfor mance re quirement is within 3% over the cente r 8 divisions. H T e[...]

Perfo rmance V erificat ion 4- 8 2715 Spectrum Analyze r Service Manua l T able 4 - 4: Front Panel Span Accuracy Sett i ngs T ime Mark ers Center Frequency Sp an/Div Resolution Bandwidth Specification Range 10 ns 500 M Hz 100 MHz 300 kHz 776 - - 824 MHz 20 ns 250 M Hz 50 MHz 300 kHz 388 - - 412 MHz 50 ns 100 M Hz 20 MHz 300 kHz 155. 2 - - 164.8 MHz[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 9 5. When the sweep oscilla tor has finishe d its sweep, press MK R / ∆ / OFF to activ ate the m arker . 6. Pre ss MKR / ∆ / OFF again to activate the de lta marker a nd tune it to the highest and lowest points on the response curve . Note the amplitude at both marke rs. 7. [...]

Perfo rmance V erificat ion 4- 1 0 2715 S pe ctrum Analyze r S e rvice Manua l 9. Use the f ollowing procedur e to chec k C e nter Mea sure/Counter Resolution Counter Resolution sele ctable. Perf ormance require ment is 1 Hz or 1 kHz a. Recal l default p ower up se ttings by pressing UTIL 1 1 . S elect the following settings on the S pe ctrum Analy[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 1 1 1. Recal l default p ower up se ttings by pressing UTIL 1 1 . S elect th e follo wing settings on the Spectrum Analyze r: FREQUENC Y 1 10 MHz REFER ENCE LEVEL - - 20 dBm SP AN/DIV 1 kHz RESOLUTION BW AUTO VID FL TR On VER TICAL SCALE 1 dB/ MARKER On 2. Connect a 1 10 MHz sig[...]

Perfo rmance V erificat ion 4- 1 2 2715 S pe ctrum Analyze r S e rvice Manua l 6. Set t he V ert ical S cale to 5 d B/. 7. Set the attenuator s for 0 dB and adjust the signal generator a mplitude for full scre en display . 8. Incr ease the attenuation 5 dB and c heck that the Marker readout c hanges 5d B ± 1d B . 9. Continue to incre ase the a tte[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 13 Check Sensitivity as spe cified in T able 4 - - 7. 1. Recal l default p ower up se ttings by pressing UTIL 1 1 . S elect th e follo wing settings on the Spectrum Analyze r: FREQUENC Y 1 10 MHz REFER ENCE LEVEL - - 50 dBm SP AN/DIV 5 MHz RESOLUTION BW 5 MHz VER TICAL SCALE 10 [...]

Perfo rmance V erificat ion 4- 1 4 2715 S pe ctrum Analyze r S e rvice Manua l 9. Using T able 4- - 7, che ck the re st of the filte rs with and without the pr eamp enabl ed. If necess ary , use an ext ernal atten uator to reach a - - 139 d Bm se tting. Ch eck with P reamp OF F as sp ecified in T abl e 4 - - 8 . 1. Recal l default p ower up se ttin[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 15 Ch eck with P reamp OF F as sp ecified in T abl e 4 - - 9 . 1. Recal l default p ower up se ttings by pressing UTIL 1 1. 2. Select the following settings on the Spec trum Analyze r: FREQUENC Y 2.15 GHz REFER ENCE LEVEL - - 30 dBm SP AN/DIV ZERO SP AN RESOLUTION BW 5 MHz VER T[...]

Perfo rmance V erificat ion 4- 1 6 2715 S pe ctrum Analyze r S e rvice Manua l 2. Select the following settings on the Spectrum Analyz er: REFER ENCE LEVEL - - 40 dBm SP AN/DIV 1 MHz RESOLUTION BW 30 kHz VIDEO FIL TER On VER TICAL SCALE 10 dB/ ACQUISITION MODE P EAK 3. Set the thre shold level at - - 105 dBm by pressing MKR/F REQ 0 an d enterin g -[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 17 3rd O rder IM perfo rmance requ irement i s ≤ 70 dBc. H T est equipment r equired: Signal Gener ators (2) 20 dB Pads (2) BNC T Ada pte r 1. Recal l default p ower up se ttings by pressing UTIL 1 1 . 2. Connect the te st equipment as shown in Figure 4 - - 1. RF Output 20 dB [...]

Perfo rmance V erificat ion 4- 1 8 2715 S pe ctrum Analyze r S e rvice Manua l 11 . R e set the VER TICAL SCALE to 10 dB/. 12. Check that the 3rd Order IM products a re ≤ - - 70 dBc. 13. Disconnec t the test equipme nt from the RF INPUT . 2nd harmonic distortion per formanc e require ment is ≤ - - 66 dBc. H T est equipment r equired: Si gnal Ge[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 19 Perfo rmance requ irement i s ≤ - - 10 dBm. H T est equipment r equired: Si gnal Gen erator 1. Recal l default p ower up se ttings by pressing UTIL 1 1 . 2. Select the following settings on the Spec trum Analyze r: FREQUENC Y 100 MHz REFER ENCE LEVEL - - 30 dBm SP AN/DIV 20[...]

Perfo rmance V erificat ion 4- 2 0 2715 S pe ctrum Analyze r S e rvice Manua l Perfo rmance requ irement i s ≥ - - 15 dBm. H T est equipment r equired: 2 Si gnal Gen erators Combiner 3 SMA Male to BNC F e male Adapters for Combiner 1. Recal l default p ower up se ttings by pressing UTIL 1 1 . 2. Connect the te st equipment as shown in Figure 4 - [...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 21 Perfo rmance requ irement s are: Pin 5: V ideo Out, Pin 2: Sweep Gate , Pin 4: S wee p Output H T est equipment r equired: T est Oscilloscope 1. Recal l default p ower up se ttings by pressing UTIL 1 1 . 2. Select the following settings on the Spec trum Analyze r: FREQUENC Y [...]

Perfo rmance V erificat ion 4- 2 2 2715 S pe ctrum Analyze r S e rvice Manua l Pin Signal 1 External Video Input 2 Sweep Gate 3 Chassis/Si gnal Ground 4 Sweep Ramp 5 Video Out 6 CLK0 Input 7 DA T AI Output 8 DA T AO Input 9 ᇓ DOLA TCH I nput 10 26.38 M Hz Output 11 VL VL I nput 12 SWPSLOPE Input 13 Not Used 14 Not Used 15 Not Used 6. Check for a [...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 23 Perfor mance re quirement is 10% over the ce nter eight divisions. H T est equipment r equired: T ime Mark Gene rator 1. Recal l default p ower up se ttings by pressing UTIL 1 1. 2. Connect the T ime Mark Gene rator to the RF INPUT . 3. Connect the T ime Mark Gene rator T rig[...]

Perfo rmance V erificat ion 4- 2 4 2715 S pe ctrum Analyze r S e rvice Manua l 2. Select the following settings on the Spectrum Analyz er: VER TICAL SCALE 10 dB/ DISPLA Y STORAGE Of f SWEEP RA TE 1 ms/DIV 3. Enab le external v ideo by p ressin g DSPL 7 . T he Sp ectrum A nalyzer automatic ally selec ts ZERO SP AN. 4. Connect a 100 kHz square wa ve [...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 25 2. Select the following settings on the Spec trum Analyze r: FREQUENC Y 100 MHz REFER ENCE LEVEL - - 29 dBm SP AN/DIV 1 kHz RESOLUTION BW AUTO VID FL TR On VER TICAL SCALE 1 dB/div 3. Enable the inter nal calibra tor signal by pressing INPUT 9 . 4. Enable PEAK ACQUISITION MOD[...]

Perfo rmance V erificat ion 4- 2 6 2715 S pe ctrum Analyze r S e rvice Manua l V erify the proper ope ration of the AM and FM Audio Detector s with the following proc edure. H T est equipment r equired: Antenna Headphone s 1. Recal l default p ower up se ttings by pressing UTIL 1 1 . 2. Connect the Antenna to the RF INPUT . 3. Select the following [...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 27 2. Select the following settings on the Spec trum Analyze r: FREQUENC Y 100 MHz REFER ENCE LEVEL - - 30 dBm SP AN/DIV 10 kHz RESOLUTION B 3 kHz VID FIL TR Of f VER TICAL SCALE 10 dB/div SWEEP AUTO 3. Enable the ca librator by pressing INPUT 9 . 4. Disable phase loc k by press[...]

Perfo rmance V erificat ion 4- 2 8 2715 S pe ctrum Analyze r S e rvice Manua l Perfo rmance requ irement i s 1. 5:1 o r better . T est equipment r equired: H All i nstru ments ex cept Opt ion 50 - 75 Ω VS W R B r idge with 50 - - 75 Ω matching pad on RF in and RF out T est Spectr um Anal yzer with Tracking G enerator H Option 50 instruments - 5[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 29 5. Pre ss B- -Sa v e A o n the test s pectrum an alyzer . A straight line will be at mid screen. T his i s the referen ce trace. 6. Connect the VSWR B r idge to the RF INPUT and set the REF ERENCE LEVEL to - - 20 dBm. 7. A freque ncy response wave form will be displayed on th[...]

Perfo rmance V erificat ion 4- 3 0 2715 S pe ctrum Analyze r S e rvice Manua l If a pplicable to your 2715, use the following pr ocedure to verify ope ration of the GPIB port. H T est equipment r equired: IBM PC/A T or Compatible , Hard Disk highly re commended DOS Operating System Microsof t QuickBAS I C Programming Langua ge T ek GURU II GPIB Int[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 31 Use the f ollowing procedur e to verif y operation of the V ideo Monitor and TV Line T rigger f eature s. 1. Recal l default p ower up se ttings by pressing UTIL 1 1 . 2. Select the following settings on the Spec trum Analyze r: FREQUENC Y 1038.4 MHz REFER ENCE LEVEL - - 60 d[...]

Perfo rmance V erificat ion 4- 3 2 2715 S pe ctrum Analyze r S e rvice Manua l 17. Use the FREQ/MKRS knob to select vide o line 17 (VID LINE r eadout indicate s VID LINE 17). 18. Ch eck that th e S pectrum A nalyzer di splay s the test w aveform sh own in Figure 4- - 6. The test signal amplitude may be dif fere nt. +f 100 75 50 25 REF − 10 − 30[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 33 This procedur e assures the prope r operation of the V ideo Demodulator a nd the gated mea surement cir cuitry . Since this is not a P e rforma nce Requireme nt, typical value s are used throughout the proce dure. H T est equipment r equired: P AL/NTSC S igna l Gener ator (TS[...]

Perfo rmance V erificat ion 4- 3 4 2715 S pe ctrum Analyze r S e rvice Manua l Ch eck for th e presence o f the ti ny pi ps at t he top o f the firs t peaks (fi rst th ree f o rN T S C o rf i r s tt w of o rP A L ) . Ch eck for th e absence o f nois e (flat bas eline) b etween an d after th e peaks. (The base line should be below the bottom graticu[...]

Perfo rmance V erificat ion 2715 Spectrum Analyze r Service Manua l 4- 35 10 dB/DIV 100 US/DIV (ANALOG DISPLA Y) Figure 4 - 8: IF Gating Check Waveform ( NTSC I llustrated) 15. Pre ss U T I L528 to turn of f gating. Perfo rmance requ irement i s ≥ 0d B m . NOTE . This check applies only to Spec trum Analyzers equippe d w ith Option 15. H T est eq[...]

Perfo rmance V erificat ion 4- 3 6 2715 S pe ctrum Analyze r S e rvice Manua l 5. Manu ally sw eep the Sp ectrum An alyzer/Tracking G enerator sy stem sl owly from 100 kHz to 1.8 GHz. 6. Ch eck that th e P ower Meter in dicates a po wer level of at leas t 0 dBm o ver the full span. 7. Disconnec t the P ower Me ter from J101, and replac e the 50 Ω[...]

2715 Spectrum Analyze r Service Manua l 5- 1 Adjustment Pr ocedures If the i nstru ment p erformance i s not w ithi n tol erance for a part icular ch aracteris- tic, determine the c ause, repair if ne cessar y , then use the appropria te adjustment proce dure to re turn the instrume nt operation to pe rforma nce spec ification. Afte r any adjustme [...]

Adjustment Proce dures 5- 2 2715 Spectrum Analyze r Service Manua l Recommended T est Equi pment T able 5- - 1 lists te st equipment and te st fixtures r ecommende d for the adjustme nt proced ure. T he characteri stics s pecified are t he min imum req uired fo r the check s. Substitute equipment must me et or ex ceed t hese charact eristi cs. T ab[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 3 T able 5 - 1: T est Equi pm ent (Cont.) T est Equi pment Recommended Character i st i cs 75 Ω Power Sensor 10 MHz t o 1 GHz frequency r ange - - 30 dBm t o +20 dBm input power range HP 8483A Single Channel Power M eter 50 Ω N male t er m ination Wiltro n 26N5 0 or equivalent 10[...]

Adjustment Proce dures 5- 4 2715 Spectrum Analyze r Service Manua l Prepar ati on Remove the cabine t as follows: 1. T urn the power OFF and remove the powe r cord. 2. Set the instrume nt on its face with the front c over installe d. 3. Remove the r ear c over (two T15 T orx- drive scr ews), two (fr ont) top and bot tom feet (fou r T1 5 screws), th[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 5 Ins trum en t Bo ttom Vie w The following figure c alls out many of the circuit board locations. Adjustment and test point locations are shown for the power supply module and swe ep board. This figure will be ref erre d to in following adjustment se ctions. TP250 R639 HV R669 DTC A[...]

Adjustment Proce dures 5- 6 2715 Spectrum Analyze r Service Manua l Adjust ment s Use the f ollowing procedur es to bring the 2715 ope rating par ameter s within the tol erances sp ecified in Section 1: Specific ations . T wo pr ocedure s a re provided for adjusting the Power Supply and Deflec tion circ uits. Check the seria l number of your instr [...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 7 4. Set the test oscilloscope contr ols as follows: Channel 1 Coupling AC Defle ction Factor 20 mV/div T rigger Channel 1, positive edge T ime Base 5  s/div 5. Place the Channel 2 probe nea r R680 on the P ower Supply board. The test oscilloscope should display approxima tely fou[...]

Adjustment Proce dures 5- 8 2715 Spectrum Analyze r Service Manua l 12. Adjust R639 (HV) on the Power S upply boa rd for - - 2750 V ± 5Va tt h e 2.75KV test point. The DC level at TP120 should lie be tween 50 V and 250 V . NOTE . The signal at TP120 is a 20 V triangle waveform with a DC component. The DC component should lie be tween 50 V and 250 [...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 9 Instrument with serial num ber B030000 or above. Adjust R639, R669, R680, R703, R 704, R705, R 900, and R930 on the Power S upply boa rd and R6, R 7, and R1 10 on the rea r panel. H T est equipment r equired: V olt age V ari able Iso latio n T rans former T est Oscilloscope with Pr[...]

Adjustment Proce dures 5- 1 0 2715 S pe ctrum Analyze r S e rvice Manua l 7. Adjust R680 (LOCK) so that the wa veform on TP270 is locke d to the wavef orm on TP250. An unlocked wavef orm exhibits a noti ceab le am ount of jitter . When the wavef orm locks, a sudden shift of the wavef orm occurs and the jitter goes awa y . C ontinue a djusting R680 [...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 1 1 15. Adjust R639 (HV) on the Power S upply boa rd for - - 2750 V ± 5V . The DC level a t TP120 should lie between 50 V and 250 V . NOTE . The signal at TP120 is a 20 V triangle waveform with a DC component. The DC component should lie be tween 50 V and 250 V after R639 is adjuste[...]

Adjustment Proce dures 5- 1 2 2715 S pe ctrum Analyze r S e rvice Manua l 30. Adjust R705 (GEO) on the Power S upply boa rd and VER T P OS (R6) a t the rea r panel for the stra ightest trace possible a t the top edge of the scre en. 31. Adjust R910 (VER T GAIN) on the Power Supply board to pla ce the bottom of the trac e at the bottom gratic ule li[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 13 Use this proc edure to a djust R 174, R98, R107, R 42, and R63 on the Displa y Storage boar d. Refer to F igur e 5 - - 2 for the loc ations ref erre d to in this procedur e. R107 R39 R40 R20 R24 R63 R42 R98 R174 R181 Figure 5 - 2: Display Storage Boar d Adj ust ment Locations Gain[...]

Adjustment Proce dures 5- 1 4 2715 S pe ctrum Analyze r S e rvice Manua l 4. Adjust R107 (HOG) for optimum one chec kerboar d square per division (edge s of intensifie d squares positione d to left and r ight vertica l graticule lines). 5. Repeat ste ps 3 and 4 to eliminate interac tion. The chec kerboar d pattern will be ce ntered whe n properly a[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 15 11 . Adjust R 63 ( VOO) to cente r the rea dout between the top and bottom gratic ule lines. 12. Enable the che ckerboa rd by pressing U T I L522 . 13. Adj ust R 174 (V ector Offset) to al ign th e to p inten sified l ine of the checker- board with the top graticule line. 14. Pre [...]

Adjustment Proce dures 5- 1 6 2715 S pe ctrum Analyze r S e rvice Manua l Use this proc edure to a djust C204 and R535 on the RF Mother board. See Figure 5- - 4 for the location of a djustments on the 2nd LO boar d. 1. Select the following settings on the Spectrum Analyz er: FREQUENC Y 100 MHz REFER ENCE LEVEL - - 30 dBm SP AN/DIV 5 MHz RES BW 5 MH[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 17 Use this proce dure to adjust R931, R918, R920, R746, R 827, R620, and C61 1 on the Phase Lock assembly . H T est equipment r equired: T ime Mark Ge nerator Refer to F igur e 5 - - 5 for adjustme nt and test point loca tions excluding TP168 on the Sweep board. J130 (YIG BEA T FREQ[...]

Adjustment Proce dures 5- 1 8 2715 S pe ctrum Analyze r S e rvice Manua l 1. Initializ e instrument settings by pressing UTlL 0 . 2. Disable f requenc y corre ctions by pressing U T I L435 . P ress any men u button to exit the me nu. 3. Recal l default freq uency no rmalizat ion val ues by pres sing U T I L5508Y . Press any me nu button to exit the[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 19 17. Adjust the Low Freque ncy VCO and High Frequenc y VC O a s follows: a. Enable the LFVCO adjustment procedur e by pressing U T I L5240 ; then follow sc reen pr ompts up to the adjustment of R 746. b. After a djusting R746, press the BKSP o n c et or e t u r nt oC F C V 1 ADJUST[...]

Adjustment Proce dures 5- 2 0 2715 S pe ctrum Analyze r S e rvice Manua l l. When nor malizations a re comple te, select the following settings on the Sp ectrum An alyzer: FREQUENC Y 100 MHz REF LEVEL - - 20 dBm SP AN/DIV 100 kHz m. Connect a 100,000,000. 0 Hz signal to the RF INPUT . S et the c ontrols for a ful l screen d ispl ay . n. Initiate r [...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 21 Use the following proce dure to adjust the Log B oar d. H T est equipment r equired: Signal Gener ator (Ma rconi 2022) 10 dB and 1 dB Step Attenuators Multimeter ( DMM) RF Cab le, BN C to SMB Refer to F igur e 5 - - 6 for all a djustment locations on the Log board. R160 R172 Log B[...]

Adjustment Proce dures 5- 2 2 2715 S pe ctrum Analyze r S e rvice Manua l d. Select the following settings on the Spectrum Analyz er: FREQUENC Y 100 MHz SP AN/DIV ZERO SP AN RES B W 3 kHz VER T SCALE 1 dB /div VIDEO FIL TER ON e. Disable DISPLA Y STORAGE by pressing D , and pre ss SWEEP ↓ twice. f. Adjust R622 (LOG GAIN) on the Log board for trac[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 23 k. Disconnec t P190 and reconne ct the 10 MHz signa l to P 190 a s was done in step 1, c on Page 5- - 21. l. Press LIN a nd add proper externa l attenuation to the input signal to place the nonstored tra ce at the bottom graticule line . m. Adjust R20 (VIO) to ma tch the position [...]

Adjustment Proce dures 5- 2 4 2715 S pe ctrum Analyze r S e rvice Manua l aa. Adjust R501 on the Log board to position the trace at the third gr aticule line from the top of the scre en. ab. Insert a n additional 40 dB of atte nuation in the input signal pa th. ac. Adjust R770 on the Log boar d to position the trac e at the se venth gratic ule line[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 25 d. Adjust R431 on the Log board f or a DC level of 20 mV ± 2m Va tT P 9 . e. Adjust R500 on the Log board to position the trace at the bottom gratic ule line. f. Reconnec t the 10 MHz/- - 10 dBm signal to J190 on the Log boar d through the 10 dB and 1 dB Step Attenua tors. Set th[...]

Adjustment Proce dures 5- 2 6 2715 S pe ctrum Analyze r S e rvice Manua l H Option 50 instruments - C onne ct a 50 Ω c oaxial cable to the signal gener ator output. C onnec t the P owe r meter head to the other e nd of the 50 Ω coax ial cabl e. S et the g enerator t o a 100 M Hz sig nal. Adjust the signal a mplitude to -30.0 dBm, then connec t [...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 27 i. Ch eck that th e peak s fall wit hin 2 mi nor div isio ns of each grati cule lin e. j. Pre ss CTR-MEAS/TRKG . k. Check that the right hand re adout indicate s approximate ly C 1.000KHZ. Use the following proce dure to adjust the V ariable Resolution and RF Option Filters. H T e[...]

Adjustment Proce dures 5- 2 8 2715 S pe ctrum Analyze r S e rvice Manua l g. Adjust C561, C 544, C522, and C416 on the RF Options board (Figure 5 - - 8) for highe st amplitude, best filte r shape, and c entering a bout the stored 30 kHz filter . C120 C233 C260 C270 C234 C252 C361 C450 C451 C522 C544 C561 C210 C416 C413 C425 C325 RF Options Board 10[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 29 d. Select the following settings on the spectr um analyz er: FREQUENC Y 100 MHz REF LEVEL - - 20 dBm SP AN/DIV 200 kHz RES BW 30 k Hz VID FL TR Of f VER T SCALE 10 dB /Div e. Save the display in one of the DISPLA Y STORAGE register s. f. Reset the RES BW to 300 kHz. g. Adjust C61 [...]

Adjustment Proce dures 5- 3 0 2715 S pe ctrum Analyze r S e rvice Manua l c. Recal l default am p litude norma lizations by pressing U T I L 5529Y .P r e s s any menu button to e xit the menu. d. Select the following settings on the Spectrum Analyz er: FREQUENC Y 100 MHz REFER ENCE LEVEL - - 20 dBm SP AN/DIV 100 kHz RESOLUTION BW 30 kHz VIDEO FIL T[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 31 f. Set the refe rence le vel for a full scre en display , and enable the VID FL TR. g. Enable ba ndwidth mode by pressing APPL 9 0 and enter ing - - 6 dB, then pressing BK SP 0 . h. Check bandwidth sha pe fac tor . The bandwidth at the 60 dB down point mus t not exceed 7 X the ban[...]

Adjustment Proce dures 5- 3 2 2715 S pe ctrum Analyze r S e rvice Manua l b. Connect a 100 MHz / - - 30 dBm signal to the R F INPUT . c. Recal l default am p litude norma lizations by pressing U T I L 5529Y . Press any me nu button to exit the menu. d. Select the following settings on the Spectrum Analyz er: FREQUENC Y 100 MHz REFER ENCE LEVEL - - [...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 33 f. Res et the VER T S CA LE to 1 dB /di v , and readj ust th e capaci tors for maximum amplitude . g. Disconnec t the signal gene rator f rom J180 and re connect P180. Use this proc edure to a djust C 204 a nd R535 on the 2nd LO board. H T est equipment r equired: Multimeter ( DMM[...]

Adjustment Proce dures 5- 3 4 2715 S pe ctrum Analyze r S e rvice Manua l Use the f ollowing procedur e to adjust R160 and R172 on the Log boar d. H T est equipment r equired: Sw eep Generato r N male to N m ale coaxial cab le HP1 1852 or equivale nt 50 – 75 Ω min loss pad 1. Recal l factory defau lt pow er up s e ttings by pr essing UTIL 1 1 .[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 35 Flatness Preset (T op V iew) R160 R172 Log Board Figure 5 - 1 1: Pr esetting the Flatness Adjustment s on the Log Board 6. Set the Sweep Ge nerator T ime to 0.1, variable fully cloc kwise, and power level to 4. If the gene rator signal is too low or high, use the power leve l pote[...]

Adjustment Proce dures 5- 3 6 2715 S pe ctrum Analyze r S e rvice Manua l Use the following proce dure to perfor m the Service Nor malization. H T est equipment r equired: Si gnal Gen erator Po wer Meter 10 dB and 1 dB Step Attenuator Asse mbly T wo 6 dB Attenuators Min Loss Pad GAIN STEP REFERENCE Use the following proce dure to normalize the ga i[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 37 4. Res et the s tep att enuato r to 0 d B. D iscon nect th e cable from t he Po wer Meter sensor a nd connect it to the R F INPUT . 5. Perfor m freque ncy normaliz ations (if not pr eviously done) by pr essing UTIL 3 1 . 6. St art the first g ain step m easuremen t by press ing U [...]

Adjustment Proce dures 5- 3 8 2715 S pe ctrum Analyze r S e rvice Manua l INTERNAL REF AMPL TD Use the following proce dure to set the Interna l Refer ence Amplitude: 1. Connect the te st equipment as shown in Figure 5 - - 13. Signal Generator RF Output N Male to BNC Female Adapter BNC Male to Male Adapter Power Sensor Power Meter 50 - - 75 Ω Min[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 39 Use the following proce dure to adjust S W 410 on the Refere nce Oscillator boa rd: H T est equipment r equired: 100 MHz Frequenc y S ta ndard 1. Perfor m Interna l R e fere nce Freque ncy normaliz ations as deta iled on page 5- - 37. 2. When n ormali zation s are comp lete, dis p[...]

Adjustment Proce dures 5- 4 0 2715 S pe ctrum Analyze r S e rvice Manua l Use the f ollowing procedur e to adjust R640 and R740 on the Sweep boa rd. H T est equipment r equired: TV V i sual C arrier So urce Oscilloscope with Probes Multimeter ( DMM) 1. Pre ss UTIL 0 to initialize instr ument settings. Set SP AN/DIV to 2 MHz and RESOLUTION BW to 5 M[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 41 7. Adjust R640 on the Sweep boar d (Figure 5- - 15) to move the bottom of the scan to the bottom graticule line. R640 R740 J750 C781 R290 R280 TP8 J480 Figure 5 - 15: Adjustment and T est Point Locations on the Sweep Board 8. Adj ust th e F M detecto r as fol lows : a. Select the [...]

Adjustment Proce dures 5- 4 2 2715 S pe ctrum Analyze r S e rvice Manua l h. Connect the osc illoscope test pr obe to TP8 on the Sweep boar d. i. Pre ss U t i l523U t i l to st op the sw eep at center screen. NOTE . Refer to Figur e 5 - - 16. This is a r epr ese ntation of w hat the w av eform at TP8 would look like if the analyzer was sweeping. T [...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 43 o. Set the pea k carr ier leve l at the top gra ticule line. p. Enable the FM video mode by pressing DEMOD 3 , and set the LEVEL control for minimum flic ker in the displayed picture . q. Adjust R740 on the Sweep boar d for best c ontrast in the pic ture. r. Initializ e instrument[...]

Adjustment Proce dures 5- 4 4 2715 S pe ctrum Analyze r S e rvice Manua l Use the following proc edure to adjust C21, C 22, C23, C24, R63, R59, and L1 1 on the V ideo Demod boa rd: T est Setup. C onne ct instruments a s follows: H T est equipment r equired: P A L/NT SC S ign al Generato r CA TV Modulator T est S pectrum A nalyzer T rack ing Generat[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 45 Adjust High Pass Fi lter. Adjust C21, C22, C 23, a nd C24 as f ollows: 1. Adjust C21, C 22, C23 and C24 on the video de mod board so the r esponse of the High Pass filte r closely r esembles the curve shown in Figure 5 - - 17 and confor ms to the limits indicate d in the figure . [...]

Adjustment Proce dures 5- 4 6 2715 S pe ctrum Analyze r S e rvice Manua l Adjust Downconverter Local Osc illat or . Adjust R 59 a nd R 63 a s follows: 1. Reconnec t the 110 MHz input signal (from t he RF Mot her board ) to th e V ideo Demod boar d 1 10M IN connec tor . 2. Move the input cable of the test spec trum analyze r from TP1 10M (on the V i[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 47 Adjust Video Detector. Adjust L1 1 a s follows: 1. Connect the TSG 95 V ideo Output to the TVM450 V ideo Input. Connect the TVM450 ’ s - - 20 dB RF TES T Output to the 2715 R F INPUT . 2. Set the TSG 95 to produce a 5-Step Gra yscale a nd set it to the desir ed video format (N T[...]

Adjustment Proce dures 5- 4 8 2715 S pe ctrum Analyze r S e rvice Manua l Color burst Figure 5 - 18: T ypical Vi deo Wavefor m 12. Adjust the V ideo Demod L1 1 slug so the amplitude of the color burst rema ins constant as the AF C is toggled ON a nd OF F by pre ssing 7 . R efer to Figure 5- - 18. 13. T oggle the AF C to the ON position. 14. Set t h[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 49 Horizontal Sync Output Check. V erify the Horizontal Sync Output a s follows: 1. Set the test oscilloscope as follows: V er tic al M ode CH1 & CH2 CH1 V olts/div 500 mV CH1 Coupling DC CH2 V olts/div 5V CH2 Coupling DC T ime/div 10  s T rigger Sourc e CH2 T rigger Mode Auto[...]

Adjustment Proce dures 5- 5 0 2715 S pe ctrum Analyze r S e rvice Manua l V ertical Sync Output Check. Use this procedur e to chec k the V ertica l Sync Output. 1. Change test osc illoscope time/div to 5ms. 2. Move the test oscilloscope c hannel 2 probe to pin 22 of the extender boa rd. 3. During one cycle of vide o waveform (te st oscilloscope CH [...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 51 E/O Output Check. Use this proce dure to check the E/O Output. 1. Move the test oscilloscope c hannel 2 probe to pin 23 of the extender . 2. Looking at the test oscilloscope scr een, verify the following: a. E/O Output wavef orm (test osc illoscope CH 2) re sembles a 0 to + 5 V sq[...]

Adjustment Proce dures 5- 5 2 2715 S pe ctrum Analyze r S e rvice Manua l The following proce dure measur es the instrument ’ s response ove r the input fre quency ra nge (15 MHz to 1000 MHz ) to a known amplitude input. Once this data is a vailable, it is tra nsferr ed to the instrume nt operating syste m. The opera ting system uses the da ta to[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 53 For this adjustment the 2715 is controlled by a personal c omputer using the RS -232 o r GP IB in terface. Th e tes t equip ment is co ntrol led by GP IB. If necess ary , refer to the do cument ation p rovid ed with t he GPIB int erface card for installation instr uctions. The fol[...]

Adjustment Proce dures 5- 5 4 2715 S pe ctrum Analyze r S e rvice Manua l Configure the T est System (CONFIG). The CONFIG progra m gener ates a table that descr ibes the test e quipment being used a nd its respec tive GPIB addresse s. The progra m also cre ates a file for the powe r sensors, containing the calibr ation factors t o be used at each f[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 55 User Def i ned Signal Generator. I f this item is selecte d during the above conf igura- tion proce dure, you will be prompte d to enter the following informa tion that will tell the softwar e how to drive the signal gener ator you specify . The corre ct entrie s for the W iltron [...]

Adjustment Proce dures 5- 5 6 2715 S pe ctrum Analyze r S e rvice Manua l 12. Enter Ma ximum Output Frequency in Hz . F or W iltron 6769A: 40e 9 13. Enter the GPIB command that sets fre quency . Enter the string of cha racte rs that comprise the CW fr equency comma nd. The actual fr equency and units will be appe nded to this command by the softwar[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 57 Use the following proce dure to connect the PC to the instrument. 1. Connect the signal gener ator and power mete r to the computer through GPIB cable s. C onnec t the instrument to be tested to the c omputer through a GP I B or RS - - 232 cable. See the 2714 & 2715 Pr ogramme[...]

Adjustment Proce dures 5- 5 8 2715 S pe ctrum Analyze r S e rvice Manua l T o char acter ize the test setup, enter the following at the prompt on the PC : CHAR<Return> Select de vice under test (DUT). Bo th selecti ons n eed to b e ru n, s elect 1 or 2 a nd ret u rn k e y ? H For split75 selec t 1 then press <Return> : Follow the on-scr[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 59 Signal Generator Power Meter 50 Ω Cable Min Loss Pad N( F ) t oB N C( M ) 50 Ω Power Sensor 75 Ω Power Sensor Power Divider 75 Ω BNC (F) to BNC (F) Adapter 6d B Pad (N) 20 dB Pad (N) 75 Ω N (F) to BNC (M) Adapter Figure 5 - 22: T est Equipment Char acterization Using a D[...]

Adjustment Proce dures 5- 6 0 2715 S pe ctrum Analyze r S e rvice Manua l Signal Generator Power Meter 50 Ω Cable 50 Ω Power Sensor 50 Ω Power Sensor Power Divider 6d B Pad (N) 20 dB Pad (N) Figure 5 - 25: T est Equipment Char acterization Using a Dual Channel Power Meter for split50 Signal Generator Power Meter 50 Ω Cable 50 Ω Power Sens[...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 61 This section me asures the instrument ’ s flatne ss response ove r the input fre quency range a nd downloads that response to the instrume nt. This data is used by certa in CA TV m easuremen ts to correct fo r frequ ency related am plit ude errors. Allow the instrume nt to warm [...]

Adjustment Proce dures 5- 6 2 2715 S pe ctrum Analyze r S e rvice Manua l CAUTION. Pr ovide adequate support for the pow e r divider and r elated equip- ment. The RF INPUT connec tor of the 2715 can be damaged if adequate support is not pr ovided. The test will r equire a bout 2 3 ⁄ 4 hours to complete . At the completion of the test, the measur [...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 63 The 271X progr am is a menu dr iven progra m which requir es entry of test conditions and te st selections. Complete the following steps to run the flatness test (P ER FOR MAN CE V ERIF ICA TIO N) sequ ence: 1. Enter your name or your c alibration lab ’ s name. 2. V erify the da[...]

Adjustment Proce dures 5- 6 4 2715 S pe ctrum Analyze r S e rvice Manua l RPT Results. The following is a descr iption of the results of running RPT . If uni ts are dB Ref (C AL, TS ) compu te maxi mum erro r relativ e to th e reference. Exam ple: if abs olut e (maxErro r + min Error) > ab solu te (min Error - - R efError) error = m axError - - [...]

Adjustment Proce dures 2715 Spectrum Analyze r Service Manua l 5- 65 Next you ar e prompted to c hoose betwee n C a librate Flatne ss, and V erify Flatne ss Calibration. Choose the former to gene rate a table of f latness corr ections to be downloaded to the 2715. The data will not be automatica lly downloaded to the 2715, as with the CAL sequenc e[...]

Adjustment Proce dures 5- 6 6 2715 S pe ctrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 6- 1 Maintenance This section de scribes pr ocedure s for pre ventive mainte nance, trouble shooting methods, corr ective ma intenance , and proce dures for rec alibrating those assemblie s that normally do not require r outine calibra tion. Stat ic Sensi ti ve Component s This instrument c ontains elec trica[...]

Maintena nce 6- 2 2715 Spectrum Analyze r Service Manua l T able 6 - 1: Relative Susceptib ility t o Sta tic Di schar ge Damage Semiconductor Cl asses Relative Suscepti b ility L evels 1 MOS or CM OS microcircuit s or discretes, or linear microcircuit swith MOS i nputs (most sensi tive) 100 to 500 V ECL 200 to 500 V Schottk y signal diodes 250 V Sc[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 3 deionize d water . Abrasive c leaner s should not be used. If the circ uit board assemblie s need cle aning, remove the circuit boa rd by ref erring to the instruc- tions under Corr ective M aintenance on Page 6 - - 13. After cleaning, allow the interior to dr y thoroughly befor e applying p[...]

Maintena nce 6- 4 2715 Spectrum Analyze r Service Manua l The Main Exte nder is to be use d with all circ uit boards that use the 50 conductor micropr ocessor bus c able. The Seconda ry Extender card is a dded to the Main Extender f or use with the Log and Phase Lock CF C boards. See Figure 6 - - 1. Circuit Board Lifter Square Pins Small Extender C[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 5 Square Pins BNC Connectors A B A B Figure 6 - 2: Signal Steering Square Pins Conversely , an exte rnal signal ma y be injecte d on any one of the se signal lines by removing the proper jumpe r on the signal line , selecting a B NC conne ctor , and applying the externa l signal to the sele ct[...]

Maintena nce 6- 6 2715 Spectrum Analyze r Service Manua l Perfor mance Checks and Recali br ation. The instrument perfor mance should be checked aft er each 2000 hours of operation or every 12 months, if the instr ument is used inter mittently , to ensure ma ximum perfor mance a nd assist in locating defe cts that may not be appare nt during regula[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 7 In mos t cases, ci rcuit nu mbers are assi gned accord ing to t he physic al location of the component on the board or asse mbly . The first digit designates the row of a grid and the second a c olumn. General T roubleshooting T echni ques. B e fore using te st equipment to mea sure acr oss [...]

Maintena nce 6- 8 2715 Spectrum Analyze r Service Manua l The following are some ge neral suggestions that may help isolate a pr oblem when trouble shooting. 1. Ens ure that t he prob lem exi sts i n the S pectru m Anal yzer by ch ecking t he operat ion of ass ociated t est equi pment . 2. T ry to isolate the problem to a circuit or at least to the[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 9 T able 6 - 2: Cal Debug Messages and M eanings Message Meani ng “ERROR in REF GAIN STEP OFF: Cannot set ext ernal signal near full screen” The signal coul d not be placed at or above f ull screen by reducing RF attenuat ion. “ERROR in REF GAIN STEP OFF: Cannot set si gnal to below 0.75[...]

Maintena nce 6- 1 0 2715 S pe ctrum Analyze r S e rvice Manua l T able 6 - 2: Cal Debug Messages and M eanings (Cont . ) Message Meani ng “ ERROR in VCO SENS @ 13 MHz: Cannot cal culate result ” The LF VCO DAC calcul ator failed t o find a proper VCO sensitivi ty when given a frequency of 13 MHz. This shoul d never happen i f the Upper VCO norm[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 1 1 T able 6 - 2: Cal Debug Messages and M eanings (Cont . ) Message Meani ng “ ERROR in FM DAC SENS: Cannot count beat frequency (3) ” The beat frequency could not be counted when t he FM DAC was set to 4095. “ ERROR in FM DAC SENS: Result out of range ” The calcul ated result for thi[...]

Maintena nce 6- 1 2 2715 S pe ctrum Analyze r S e rvice Manua l T able 6 - 2: Cal Debug Messages and M eanings (Cont . ) Message Meani ng “ ERROR in VERTICAL OFFSET : Cannot span down on cali br at or ” Could not keep cali br at or signal on screen when spanning down to 1 MHz span, 5 M Hz filt er . “ ERROR in VERTICAL OFFSET : Cannot set cal [...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 13 Corr ecti ve Mai ntenance Correc tive maintenanc e consists of component repl acem ent and in strum ent repa ir . S pe cial tec hniques and proc edures tha t may be re quired to re move and repla ce asse mblies or compone nts in this instrument ar e descr ibed here . Handling Static Sensi t[...]

Maintena nce 6- 1 4 2715 S pe ctrum Analyze r S e rvice Manua l Surface Mounted Com ponents. Surf ace mounte d components ar e used in this instrument. These compone nts are mounted on pads on the circ uit board, rathe r than through hole s in the board. (I n some rar e instance s, components may be mounted on pads a round through holes.) Le ad con[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 15 1. Unsolder the compone nt. Use a solder wick to remove access sol der . 2. Clean the boa rd with isopropyl alc ohol. 3. So lder in t he replacem ent. S urface m ounted components are pr etinned, and there fore re quire little solder . CAUTION. I f you use a soldering ir on, use one with a [...]

Maintena nce 6- 1 6 2715 S pe ctrum Analyze r S e rvice Manua l NOTE . Disconnect the instrument fr om its pow e r sour ce befor e r eplacing or soldering compone nts. Extreme caution must be use d when removing or replac ing components, b ecause the instrume nt contains seve ral multi laye r circ uit boards. Excess he at from the soldering ir on a[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 17 Assembl y Replacement Requir ing Fl atness Cor rect ion Rep lacement o f any of t he foll owin g assem blies w ill req uire com pleti on of t he Amplitude Flatness Adjustment Pr ocedur e on Page 5 - - 52. H RF Attenuator (A18) H 1st Converter (A16) H YIG Oscillator ( A19) H YIG Buff er Ampl[...]

Maintena nce 6- 1 8 2715 S pe ctrum Analyze r S e rvice Manua l 4. Pull the cover up and of f. Replace the instrument in its c abinet by re versing the r emoval proc edure. Digital Options Board Log Amplifier Board Display Storage Board Microprocessor Board Center Frequency Control Board Reference Oscillator Board V ariable Resolution Module CRT RF[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 19 Center Frequency Control Board Log Board Display Storage Board 1st LO Sweep Board Power Supply Board Microprocessor Board RF Deck Digital Options Board 1st LO Buf fer Amplifier Assem bly RF Options Video Dem od Figure 6 - 5: Assemblies Seen from t he Bottom of the Spect rum Analyzer Use the[...]

Maintena nce 6- 2 0 2715 S pe ctrum Analyze r S e rvice Manua l 3. Disconnec t the C R T anode lea d and dischar ge it to the main chassis. W ARNING. The CRT anode lead r etains a high voltage char ge after the instru- ment is turned off. T o avoid e lectrical shoc k, gr ound the anode lead to the main chassis immediate ly after disconne cting. 4. [...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 21 Use the following proce dure to replac e the F r ont Panel assembly: 1. Remove the instr ument from its c abinet (se e Remov ing the Instrument fr om its Cabinet on P a ge 6 - - 17). 2. Remove the nut a nd washer f rom the RF INPUT connector (and fr om the T rac king Gener ator output conne[...]

Maintena nce 6- 2 2 2715 S pe ctrum Analyze r S e rvice Manua l Front Remove these t wo nuts at t he top front. Sweep Board Sweep Board Remove this support plate by removing the 4 screws shown Part of Power Supply Board Remove these t wo nuts at the bottom f ront. Botto m View Bottom V iew T op View Figure 6 - 6: Rem ovi ng t he Front Panel[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 23 Use t he foll owin g proced ure to rep lace the R F D eck assem bly: NOTE . Replace ment of this assembly r equir es comple tion of the . Amplitude Flatness Adjustment Procedur e on Page 5- - 52. 1. Remove the instr ument from its c abinet (se e Remov ing the Instrument fr om its Cabinet on[...]

Maintena nce 6- 2 4 2715 S pe ctrum Analyze r S e rvice Manua l Front B. RF Deck after removal from inst rument C. Connectors on t he RF Deck (inside) J100 (1st LO Buf fer Amplifier) J200 (Step Attenuat or) J150 (Step Attenuat or) J410 (RF Mother Board) J670 (RF Mother Board) J400 (RF Mother Board) J565 (RF Mother Board) J300 (1st LO Buf fer Amplif[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 25 Power Supply Board Loosen these nuts and unt hread them approxim ately halfway out RF Deck Nuts (2) Botto m Side To p S i d e Flat Head Screws (5) V ariable Resolution Module Figure 6 - 9: RF Deck Scr ew s and Nut s[...]

Maintena nce 6- 2 6 2715 S pe ctrum Analyze r S e rvice Manua l Use the following proce dure to replac e the 1st LO Assembly: NOTE . Replace ment of this assembly r equir es comple tion of the. Amplitude Flatness Adjustment Procedur e on Page 5- - 52. 1. Remove the instr ument from its c abinet (se e Remov ing the Instrument fr om its Cabinet on P [...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 27 Use the following proce dure to replac e the 1st LO B uf fe r Amplifier: NOTE . Replace ment of this assembly r equir es comple tion of the. Amplitude Flatness Adjustment Procedur e on Page 5- - 52. 1. Remove the instr ument from its c abinet (se e Remov ing the Instrument fr om its Cabinet[...]

Maintena nce 6- 2 8 2715 S pe ctrum Analyze r S e rvice Manua l Refer to Figure 6- - 10 for the following assembly proce dure for the fa n: 1. Inst all the mo unti ng spri ngs on to the repl acement fan us ing tw o 6-32 P ozi- driv scr ews (and nuts) . Hand tighten only . NOTE . Observe the position of fan cable to mounting springs and sc r ew loca[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 29 Rear panel cutout Fan is centered in rear panel cutout so that it “float s” freely . Screw is located next to fan connector . To p o f instrument 4-40 × 0.250 (2) 6-32 Nuts (2) Chassis Fan 4-40 × 0.250 Poz Fan mounting springs Fan mounting springs 4-40 × 0.250 Poz 6-32 × 1.025 (2) F[...]

Maintena nce 6- 3 0 2715 S pe ctrum Analyze r S e rvice Manua l Use the following proce dure to replac e the R F Mother Board: 1. Remove the instr ument from its c abinet. 2. Disconnec t P100, P410, P 400, P565, and P670 f rom the RF Mother boa rd (Figure 6- - 8 on Page 6 - - 24) . 3. Remove the nut a nd washer f rom J100 on the RF Mother boar d. 4[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 31 Sweep Board RF Deck Power Supply Board Remove These T wo Screws J6 J480 Figure 6 - 1 1: Power Supply Assembly Removal (Bot tom Vi ew) 11 . R e move the two nuts that f asten the r ear plug-in c ircuit boar d guide to the RF Deck (Figure 6- - 12).[...]

Maintena nce 6- 3 2 2715 S pe ctrum Analyze r S e rvice Manua l Remove T wo Nuts T op of right side chassis Power Supply Board Bottom of right side chassis Outside view of t he left side chassis Rear plug in circuit board guide plate-to-lef t side chassis screws V ariable Resolution Module Figure 6 - 12: Rem ovi ng Power Supply Att achi ng Nut s 12[...]

Maintena nce 2715 Spectrum Analyze r Service Manua l 6- 33 Use the following proce dure to replac e the battery on the Display Storage and GPIB or R S-232 boar ds. The Spectrum Analyz er uses two lithium batter ies for nonvolatile memor y . One batter y is located on the Display Storage boa rd, and the other on the GPIB or RS-232 board. NOTE . Repl[...]

Maintena nce 6- 3 4 2715 S pe ctrum Analyze r S e rvice Manua l Interconnect plug to J1 1 on Power Supply Board is on opposite side R620 R602 U713 Figure 6 - 13: Locat i on of R602 on the Phase Lock CFC Boar d NOTE . If the be at note fr equenc y is above 50 k Hz, it w ill not be visible. 6. If the amplitude is gre ater than 60 mV , pick a lower va[...]

2715 Spectrum Analyze r Service Manua l 7- 1 Options This section de scribes the options available for the 2715 Spec trum Analyze r . There a re five inter national power cor d options off ered for the 2715 Spectr um Analyze r . The physical descr iptions of the power cor d plugs follows. For replacem ent pu rposes , refer to t he Rep laceable M ec[...]

Options 7- 2 2715 Spectrum Analyze r Service Manua l This is a no cost option tha t adds the IEEE Standa rd 488 Gener al Purpose Inter face Bus (GPIB). The pertinent cir cuits are loca ted on the Digital Option board. The GPIB port consists of three compar tments. They are the ge neral purpose inte rfac e bus controlle r , an octal bus tr ansceive [...]

Options 2715 Spectrum Analyze r Service Manua l 7- 3 Rear Panel W58 J101 W21 50 Ω J100 J900 J460 W22 Part of 1st LO Buf fer Amplifier S3 Figure 7 - 1: Option 15 Installation This option enable s mounting of the Spectr um Analyzer in a standar d 19 inch (483 m m) rack. Th e S pectrum A nalyzer is g uaranteed t o meet all elect rical and environme [...]

Options 7- 4 2715 Spectrum Analyze r Service Manua l[...]

2715 Spectrum Analyze r Service Manua l 8- 1 Replaceable Electr ical Parts This section c ontains a list of t he elec trical c omponents for the 2715. Use this lis t to iden tify and o rder replacemen t parts. Part s Or deri ng Inf ormat ion Rep lacement p arts are avai lable t hr ough your loc al T ektronix field of fic e or represen tativ e. Chan[...]

Rep laceable E lectrical P arts 8- 2 2715 Spectrum Analyze r Service Manua l Parts List Column Descr i pt i ons Column Col umn Name Description 1 Component Num ber The component num ber appears on diagrams and circuit board illu stra tions, loc ated in the d iagr ams section. Assembl y numbers are clearly marked on each diagram and circuit board il[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 3 Manufacturer s Cross Index Mfr . Code Manufacturer Addr ess Ci t y , Stat e, Zi p Code D5243 ROED ERSTEIN ER NST GMBH LU DMILLAST RASSE 23 8300 LANDSHU T GERMANY S3774 OSHIN O ELE CTRIC LAMP WO RKS L TD 5 2 MINAMI SHINA GA WA 2 CHORE SHIN AGA WA KU TOKY O JAP AN S4091 SANY[...]

Rep laceable E lectrical P arts 8- 4 2715 Spectrum Analyze r Service Manua l Manufacturer s Cross Index (Cont.) Mfr . Code City , State, Zip Code Address Manufacturer 02289 H I - - GC OI N C SUB OF NYTRO NICS INC 101 LOCUST ST HARTFORD CT 0 61 14- - 1504 04222 A VX/KYOC ERA DIV OF A VX CO RP 19TH AVE SOUTH P O BOX 867 MYRT LE BEACH SC 29577 04713 M[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 5 Manufacturer s Cross Index (Cont.) Mfr . Code City , State, Zip Code Address Manufacturer 34371 HARRIS SE MICONDUCTOR SEMICO NDUCTOR SECTO R MS 58 - - 71 PO BOX 883 MELBO URNE, FL 32902 - - 0883 4T16 5 NEC ELECTRONICS US A INC ELE CTRON DIV 475 ELLIS ST PO BOX 7241 MOUN T [...]

Rep laceable E lectrical P arts 8- 6 2715 Spectrum Analyze r Service Manua l Manufacturer s Cross Index (Cont.) Mfr . Code City , State, Zip Code Address Manufacturer 68994 XILINX I NC 2100 LOGIC D RIVE SAN JOSE CA 95124 71400 BUSSMAN N DIV OF COOP ER INDUSTRIES INC 1 14 OLD STA T E RD PO BOX 14460 ST LOUI S MO 63178 73138 BI TE CHNOLO GIES CORP OR[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 7 Replaceable El ectr i cal Part s Li st Compone nt Number T ektron ix Par t Number Serial No. Effective Serial No. Di scont’ d Name & Description Mfr. Code M fr . Pa rt Number A5 671- - 0974 - - 04 B040924 C KT BD ASSY :SW EEP 80009 671–0974–04 A5 671- - 0974 - - [...]

Rep laceable E lectrical P arts 8- 8 2715 Spectrum Analyze r Service Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15 621 - - 0083- - 14 B0 40925 POWER S UPPL Y :CIRCUIT BO ARD W/CH ASSIS 80009 62[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 9 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A23 671 - - 1740- - 03 B010400 CIRCUIT B D ASSY:RF OPTI ON 80009 671174003 A23 671[...]

Rep laceable E lectrical P arts 8- 1 0 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A5C586 283- - 5188 - - 00 CAP ,FXD, CERAMI C:MLC ;100PF ,5%,100V ,N PO,1206 [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 1 1 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A5C872 283- - 5004 - - 00 CAP ,FXD, CERAMI C:MLC ;0.1UF ,10%, 25V ,X7R,1206 T K2[...]

Rep laceable E lectrical P arts 8- 1 2 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A5R100 321- - 5028 - - 00 RES,F XD:TH ICK FI LM;6.81K OH M,1%,0. 125W , TC=1[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 13 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A5R293 321- - 5031 - - 00 RES,F XD:TH ICK FI LM;12.1K OH M,1%,0. 125W , TC=100 PP[...]

Rep laceable E lectrical P arts 8- 1 4 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A5R552 321- - 5032 - - 00 RES,F XD:TH ICK FI LM;15.0K OH M,1%,0. 125W , TC=1[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 15 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A5R764 321- - 5044 - - 00 RES,F XD:TH ICK FI LM;56.2 OH M,1%,0. 125W , TC=100 PPM[...]

Rep laceable E lectrical P arts 8- 1 6 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A5U620 156 - - 51 10 - - 00 IC,DIGIT AL:L STTL,COUNTE R;SYNCH 4- -BIT UP/DOW[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 17 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A6CR400 152- - 5000 - - 00 DIOD E,SIG:, UL TRA FAST ;70V ,0. 15A,6NS,C OM- - CA T[...]

Rep laceable E lectrical P arts 8- 1 8 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A6Q300 151- - 5000 - - 00 TRAN SISTOR, SIG:BIPOLAR ,PNP;40V , 200MA,250MH Z,[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 19 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A6R441 321- - 5024 - - 00 RES,F XD:TH ICK FI LM;3.32K OH M,1%,0. 125W , TC=100 PP[...]

Rep laceable E lectrical P arts 8- 2 0 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A6U135 156 - - 5265 - - 00 IC,DIGIT AL :CMOS,MUL TIVIBRA TO R;DUAL PRECIS IO[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 21 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A7C280 281- - 0298 - - 00 CAP ,V AR,C ER DI:6 - - 50PF 51406 T Z03Z500YR169 A7C28[...]

Rep laceable E lectrical P arts 8- 2 2 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A7C470 283- - 5004 - - 00 CAP ,FXD, CERAMI C:MLC ;0.1UF ,10%, 25V ,X7R,1206 [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 23 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A7C650 283- - 5004 - - 00 CAP ,FXD, CERAMI C:MLC ;0.1UF ,10%, 25V ,X7R,1206 T K20[...]

Rep laceable E lectrical P arts 8- 2 4 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A7J160 131 - - 0391 - - 01 CONN ,RF J ACK:SMB, ;50 OHM, MALE,STR ,PCB,GOLD /[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 25 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A7Q312 151- - 5000 - - 00 TRAN SISTOR, SIG:BIPOLAR ,PNP;40V , 200MA,250MH Z, AMPL[...]

Rep laceable E lectrical P arts 8- 2 6 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A7R254 321- - 5034 - - 00 RES,F XD:TH ICK FI LM;22.1K OH M,1%,0. 125W , TC=1[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 27 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A7R341 321- - 5018 - - 00 RES,F XD:TH ICK FI LM;1.0K OH M,1%,0. 125W , TC=100 PPM[...]

Rep laceable E lectrical P arts 8- 2 8 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A7R442 321- - 5006 - - 00 RES,F XD:TH ICK FI LM;100 OHM ,1%,0.125W,T C=100 P[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 29 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A7R542 321- - 5020 - - 00 RES,F XD:TH ICK FI LM;1.5K OH M,1%,0. 125W , TC=100 PPM[...]

Rep laceable E lectrical P arts 8- 3 0 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A7R641 321- - 5004 - - 00 RES,F XD:TH ICK FI LM;22.1 OH M,1%,0. 125W , TC=10[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 31 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A7R764 321- - 5020 - - 00 RES,F XD:TH ICK FI LM;1.5K OH M,1%,0. 125W , TC=100 PPM[...]

Rep laceable E lectrical P arts 8- 3 2 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A7U440 156- - 6141 - - 00 IC, MISC: BIPOLAR,M UL TIPLI ER;FOU R QUADRAN T , [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 33 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A9C5 283 - - 51 14 - - 00 CAP ,FXD ,CERAM IC:M LC;0.1U F , 10%,50V ,X7R, 1206 042[...]

Rep laceable E lectrical P arts 8- 3 4 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A9C43 283- - 5003- - 00 CAP , FXD,C ERAMIC :MLC; 0.01UF ,10%,50V , X7R,1206 [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 35 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A9C80 283- - 51 14- - 00 CAP ,FXD ,CERAM IC:M LC;0.1U F , 10%,50V ,X7R, 1206 0422[...]

Rep laceable E lectrical P arts 8- 3 6 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A9C96 283- - 5265- - 00 B010100 B020495 CAP ,FXD ,CERAM IC:M LC;0.0033U F ,5[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 37 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A9R1 321 - - 5025 - - 00 RES,F XD:TH ICK FI LM;3.92K OHM ,1%,0.125W,T C=100 PPM 5[...]

Rep laceable E lectrical P arts 8- 3 8 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A9R39 31 1 - - 5051 - - 00 R ES,V AR:500 OH M,20%,0. 25W , SIDE ADJ ,SMD, 16[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 39 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A9R76 321 - - 5019 - - 00 RES,F XD:TH ICK FI LM;1.21K OH M,1%,0. 125W , TC=100 PP[...]

Rep laceable E lectrical P arts 8- 4 0 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A9R106 321- - 5018 - - 00 RES,F XD:TH ICK FI LM;1.0K OH M,1%,0. 125W , TC=10[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 41 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A9R144 321- - 5010 - - 00 RES,F XD:TH ICK FI LM;221 OHM ,1%,0.125W,T C=100 PPM 50[...]

Rep laceable E lectrical P arts 8- 4 2 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A9R181 31 1- - 5051 - - 00 R ES,V AR:500 OH M,20%,0. 25W , SIDE ADJ ,SMD, 16[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 43 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A9U22 156 - - 5071 - - 01 IC, DIGITAL:HCT CMOS,T RANSCEI VER;OCTAL,3- - ST A T E [...]

Rep laceable E lectrical P arts 8- 4 4 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A9U48 160 - - 9848 - - 00 IC, DIGITAL:CMOS, 2048 X 8 PROM,50N S,OTP ,7C291 8[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 45 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A10C428 283 - - 5003 - - 00 CAP , FXD,C ERAMIC :MLC; 0.01UF ,10%,50V , X7R,1206 T[...]

Rep laceable E lectrical P arts 8- 4 6 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A10J190 131 - - 0391 - - 01 CONN ,RF J ACK:SMB, ;50 OHM, MALE,STR ,PCB,GOLD [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 47 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A10R192 321 - - 5006 - - 00 RES,F XD:THI CK FILM ;100 OHM, 1%,0.125W,TC =100 PPM [...]

Rep laceable E lectrical P arts 8- 4 8 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A10R895 321 - - 5018 - - 00 RES,F XD:THI CK FILM ;1.0K OHM ,1%,0.125W,T C=10[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 49 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A10U220 163 - - 1272 - - 01 B041845 I C, MEMOR Y ; PRGM 156- - 3644 - - 00, CM OS[...]

Rep laceable E lectrical P arts 8- 5 0 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A10U465 156 - - 5101 - - 01 IC,DIGIT AL :HCTCMOS,LA TCH;OCT AL D- -T YPE, 3 [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 51 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number T ektron ix Par t Number Serial No. Effective Serial No. Di scont ’ d Name & Description Mfr. Code M fr . Pa rt Number A1 1C7 283-5003-00 CAP , FXD,C ERAMIC :MLC; 0.01UF ,10%,50V , X7R,1206 TK2058 C3[...]

Rep laceable E lectrical P arts 8- 5 2 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A1 1C45 283-5003-00 CAP , FXD,C ERAMIC :MLC; 0.01UF ,10%,50V,X7R,1206 TK2058[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 53 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A1 1Q14 151-5001-00 TRANSI STOR,SI G:BIPOLAR, NPN;40V , 200MA,300MH Z, AMPLIF IER[...]

Rep laceable E lectrical P arts 8- 5 4 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A1 1R40 321-5000-00 RES,F XD:TH ICK FI LM;10 OHM ,1%,0.125W 91637 CRCW 12061[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 55 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A1 1U1 1 156-5217-00 IC,LINE AR:BIPO LAR,VO L T AGE REG ULA TOR;NE GA TIVE , ADJU[...]

Rep laceable E lectrical P arts 8- 5 6 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12J100 131-1 170-00 CON N,RF J ACK:SMB, ;50 OHM, MALE,STR ,SLDR C UP/ FRON [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 57 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1C235 290-5002-00 CAP , FXD,TANT :DRY;10UF ,20%,20V , T ANT OXI DE,0.287 X 0.[...]

Rep laceable E lectrical P arts 8- 5 8 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1C389 290-5002-00 CAP , FXD,TANT :DRY;10UF ,20%,20V , T ANT OXI DE,0.287[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 59 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1C672 290-5002-00 CAP , FXD,TANT :DRY;10UF ,20%,20V , T ANT OXI DE,0.287 X 0.[...]

Rep laceable E lectrical P arts 8- 6 0 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1C864 283-5004-00 CAP , FXD,C ERAMIC :MLC; 0.1UF ,10%,25V , X7R,1206 TK2[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 61 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1L481 108-1420-00 INDUCTO R,FXD:POWE R; 300U H,20%,I DC<0.75 A, RDC <0.[...]

Rep laceable E lectrical P arts 8- 6 2 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1Q931 151-5000-00 TRANSI STOR,SI G:BIPOLAR, PNP;40V ,200M A,250MHZ , AMP[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 63 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1R289 321-5006-00 RES,F XD:TH ICK FI LM;100 OHM ,1%,0.125W 50139 BC K1000FT A[...]

Rep laceable E lectrical P arts 8- 6 4 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1R476 321-5030-00 RES,F XD:TH ICK FI LM;10.0K OH M,1%,0. 125W 50139 BC K[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 65 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1R600 321-5045-00 RES,F XD:TH ICK FI LM;68.1 OH M,1%,0. 125W 50139 BCD 68R1FT[...]

Rep laceable E lectrical P arts 8- 6 6 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1R713 321-5045-00 RES,F XD:TH ICK FI LM;68.1 OH M,1%,0. 125W 50139 BCD 6[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 67 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1R846 321-5045-00 RES,F XD:TH ICK FI LM;68.1 OH M,1%,0. 125W 50139 BCD 68R1FT[...]

Rep laceable E lectrical P arts 8- 6 8 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1R929 321-5048-00 RES,F XD:TH ICK FI LM;332K OHM ,1%,0.125W 57668 M CR18[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 69 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1U460 156-5021-01 IC, DIGITAL:CMOS, REGISTER ;8-ST AGE SHI FT/ST ORAGE, 3-ST [...]

Rep laceable E lectrical P arts 8- 7 0 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A1U950 156-5300-00 IC,CONV ERTER:CMOS ,D/A;12 BIT ,DUAL,CURRE NT OUT ,1. [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 71 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A2C414 283-5002-00 CAP , FXD,C ERAMIC :MLC; 1000PF , 10%,50V ,NPO, 1206 TK2058[...]

Rep laceable E lectrical P arts 8- 7 2 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A2R201 321-5013-00 RES,F XD:TH ICK FI LM;392 OHM ,1%,0.125W 50139 BC K392[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 73 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A2U320 1 19-5001-00 MI XER,RI NG:+7DBM LO, SMD 15542 R MS-1-10 A12A2U435 156-5[...]

Rep laceable E lectrical P arts 8- 7 4 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A3E41 1 276-0532-00 CORE, EM:TOR OID;F ERRIT E,UO=1500 20% (1KHZ ) 021 14[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 75 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A12A3R516 321-5016-00 RES,F XD:TH ICK FI LM;681 OHM ,1%,0.125W 50139 BC K6810FT A[...]

Rep laceable E lectrical P arts 8- 7 6 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1C191 283-5004-00 CAP , FXD,C ERAMIC :MLC; 0.1UF ,10%,25V , X7R,1206 TK2[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 77 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1C314 281-0267-00 CAP , V AR,CER AMIC: 6-50PF , 50V 51406 T Z03Z500ER169 A13A[...]

Rep laceable E lectrical P arts 8- 7 8 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1C435 283-5000-00 CAP ,FXD, CERAMI C:MLC ;10PF ,5%,50V ,N PO,1206 T K205[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 79 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1C546 283-5004-00 CAP , FXD,C ERAMIC :MLC; 0.1UF ,10%,25V , X7R,1206 TK2058 C[...]

Rep laceable E lectrical P arts 8- 8 0 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1J690 131-2920-00 CONN,HDR:P CB,;M ALE,R T ANG,2 X 5, 0.1 CTR,0.3 18 MLG[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 81 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1Q202 151-5009-00 TRANSI STOR,SI G:BIPOLAR, NPN;25V , 300MA,1.2GH Z, AMPLIF I[...]

Rep laceable E lectrical P arts 8- 8 2 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1Q490 151-5004-00 TRANSI STOR,SI G:BIPOLAR, NPN;20V , 1.0A,65MH Z,AMPLI [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 83 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1R161 321-5018-00 RES,F XD:TH ICK FI LM;1.0K OH M,1%,0. 125W 50139 BCK1001FT [...]

Rep laceable E lectrical P arts 8- 8 4 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1R296 321-5051-00 RES,F XD:TH ICK FI LM;0 OHM ,1%,0.125W 09969 CRCW 1206[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 85 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1R372 321-5047-00 RES,F XD:TH ICK FI LM;100K OHM ,1%,0.125W 50139 BC K1003FT [...]

Rep laceable E lectrical P arts 8- 8 6 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1R454 321-5018-00 RES,F XD:TH ICK FI LM;1.0K OH M,1%,0. 125W 50139 BCK10[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 87 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1R605 321-5018-00 RES,F XD:TH ICK FI LM;1.0K OH M,1%,0. 125W 50139 BCK1001FT [...]

Rep laceable E lectrical P arts 8- 8 8 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A13A1U670 156-5043-01 IC,CONV ERTER:BIP OLAR,D/A ;8 BIT ,CURRE NT OUT , MUL [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 89 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number T ektron ix Par t Number Serial No. Effective Serial No. Di scont ’ d Name & Description Mfr. Code M fr . Pa rt Number A14 672-1308-03 CKT BD ASSY:RF M OM/2ND LO 80009 672130803 A14 672-1308-04 B0308[...]

Rep laceable E lectrical P arts 8- 9 0 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A14A1C240 283-5004-00 CAP , FXD,C ERAMIC :MLC; 0.1UF ,10%,25V , X7R,1206 TK2[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 91 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A14A1C382 281-5014-00 CAP , V AR:CER AMIC, SINGLE-TR N TRIM MER;6. 5-25PF , 250V [...]

Rep laceable E lectrical P arts 8- 9 2 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A14A1C612 283-5004-00 CAP ,FXD, CERAMI C:MLC ;0.1UF ,10%, 25V ,X7R,1206 TK20[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 93 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A14A1L222 108-5128-00 INDUCTO R,FXD:SIGNA L,AIR CORE ;35.5NH,5 %, Q>1 12@150MH[...]

Rep laceable E lectrical P arts 8- 9 4 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A14A1Q530 151-5001-00 TRANSI STOR,SI G:BIPOLAR, NPN;40V , 200MA,300MH Z, AMP[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 95 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A14A1R216 321-5029-00 RES,F XD:TH ICK FI LM;8.25K OH M,1%,0. 125W 50139 BC K8251F[...]

Rep laceable E lectrical P arts 8- 9 6 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A14A1R443 321-5026-00 RES,F XD:TH ICK FI LM;4.75K OH M,1%,0. 125W 50139 BC K[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 97 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A14A1R734 321-5006-00 RES,F XD:TH ICK FI LM;100 OHM ,1%,0.125W 50139 BC K1000FT A[...]

Rep laceable E lectrical P arts 8- 9 8 2715 S pe ctrum Analyze r S e rvice Manua l Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A14A1U610 156-5269-00 B041227 IC ,DIGI T AL:ECL, RECEIVER ;TRI PLE LINE 0471[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 99 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1C175 285-1381-00 CAP ,FXD, MTLZD :1500PF ,10%,250V TK0515 PM E271Y415K A15A1[...]

Rep laceable E lectrical P arts 8 - 100 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1C262 283-0486-00 B030799 CAP ,FXD,CER DI:1 .0UF ,10%,50 V 04222 SR 305C105[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 101 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1C691 283-5004-00 CAP , FXD,C ERAMIC :MLC; 0.1UF ,10%,25V , X7R,1206 TK2058[...]

Rep laceable E lectrical P arts 8 - 102 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1C916 283-5003-00 CAP ,FXD, CERAMI C:MLC ;0.01UF ,10%, 50V ,X7R,1206 TK2058[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 103 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1CR750 152-5005-00 D IODE,SI G:,UL T RA FAST ; 70V , 0.15A,6NS, COM-ANOD E [...]

Rep laceable E lectrical P arts 8 - 104 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1L215 108-1263-00 INDUCTO R,FXD:POWE R;10UH,10 %,I<2.1 A,RDC <0.043 O[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 105 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1Q800 151-5006-00 TRANSI STOR,SI G:BIPOLAR, NPN;300V , 50MA,50MH Z, AMPLIF [...]

Rep laceable E lectrical P arts 8 - 106 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1R406 321-5169-00 RES,F XD:TH ICK FI LM;475K OHM ,1%,0.125W 91637 CRCW 1206[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 107 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1R551 321-5000-00 B020569 RES, FXD:T HICK F ILM;10 OH M,1%,0. 125W 91637 CR[...]

Rep laceable E lectrical P arts 8 - 108 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1R633 321-5040-00 RES,F XD:TH ICK FI LM;68.1K OH M,1%,0. 125W 50139 BCK6812[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 109 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1R693 321-5027-00 B020605 RES, FXD:T HICK F ILM;5. 62K OHM,1%, 0.125W 50139[...]

Rep laceable E lectrical P arts 8- 1 1 0 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1R761 321-5030-00 B020605 RES, FXD:T HICK F ILM;10. 0K OHM,1%, 0.125W 5013[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 111 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1R823 321-5038-00 RES,F XD:TH ICK FI LM;47.5K OH M,1%,0. 125W 50139 BC K475[...]

Rep laceable E lectrical P arts 8- 1 1 2 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1R912 321-5025-00 RES,F XD:TH ICK FI LM;3.92K OH M,1%,0. 125W 50139 BC K39[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 1 1 3 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1U260 156-1627-00 B020605 IC ,LINEAR :BIPOLAR, SW-REGULA T OR CONTR OLLER [...]

Rep laceable E lectrical P arts 8- 1 1 4 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1U280 156-1627-00 B020605 IC,LINEA R:BIPOL AR,SW-RE GULA TO R CONTRO LLER;[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 1 1 5 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A15A1W790 321-5051-00 RES,F XD:TH ICK FI LM;0 OHM ,1%,0.125W 09969 CRCW 1206 J[...]

Rep laceable E lectrical P arts 8- 1 1 6 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A16A1Q204 151-0608-00 TRANSI STOR,SI G:BIPOLAR, NPN;12V , 65MA,8.5GH Z, AMPLIF[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 1 1 7 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A16A2C242 283-5004-00 CAP , FXD,C ERAMIC :MLC; 0.1UF ,10%,25V , X7R,1206 TK205[...]

Rep laceable E lectrical P arts 8- 1 1 8 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A17C172 281-0825-00 CAP , FXD,C ER DI:0. 005UF , +100-0%,100VFEE DTHROUGH 3309[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8- 1 1 9 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A17A1Q190 151-5004-00 TRANSI STOR,SI G:BIPOLAR, NPN;20V , 1.0A,65MH Z,AMPLI FI[...]

Rep laceable E lectrical P arts 8 - 120 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A17A1R332 321-501 1-00 RES, FXD:T HICK F ILM;274 OH M,1%,0. 125W 50139 BC K2740[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 121 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A18A1Q434 151-5000-00 TRANSI STOR,SI G:BIPOLAR, PNP;40V ,200M A,250MHZ ,AMPLI F[...]

Rep laceable E lectrical P arts 8 - 122 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A18A2C230 283-5004-00 CAP , FXD,C ERAMIC :MLC; 0.1UF ,10%,25V , X7R,1206 TK2058[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 123 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A18A2R132 321-5004-00 RES,F XD:TH ICK FI LM;22.1 OH M,1%,0. 125W 57668 MC R18FW[...]

Rep laceable E lectrical P arts 8 - 124 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A19A1R219 321-5018-00 RES,F XD:TH ICK FI LM;1.0K OH M,1%,0. 125W 50139 BCK1001F[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 125 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A21C280 283-5001-00 CAP , FXD,C ERAMIC :MLC; 100PF ,5%, 50V ,NPO,1206 T K2058 C[...]

Rep laceable E lectrical P arts 8 - 126 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A21Q552 151-5000-00 TRANSI STOR,SI G:BIPOLAR, PNP;40V ,200M A,250MHZ , AMPLIF I[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 127 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A21R351 321-5014-00 RES,FXD :THI CK FILM ;475 OHM, 1%,0.125W 50139 BCK4750F T A[...]

Rep laceable E lectrical P arts 8 - 128 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A21U380 156-5018-00 IC,LI NEAR:BI POLAR,OP-AMP; DUAL,SI NGLESUPPL Y 01295 LM 35[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 129 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A23C234 281-0267-00 CAP , V AR ,CERAM IC:6-50PF ,50V 51406 TZ03Z 500ER169 A23C2[...]

Rep laceable E lectrical P arts 8 - 130 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A23C344 283-5004-00 CAP , FXD,C ERAMIC :MLC; 0.1UF ,10%,25V , X7R,1206 TK2058 C[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 131 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A23C451 281-0267-00 CAP , V AR ,CERAM IC:6-50PF ,50V 51406 TZ03Z 500ER169 A23C4[...]

Rep laceable E lectrical P arts 8 - 132 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A23C561 281-0267-00 CAP , V AR,CER AMIC: 6-50PF , 50V 51406 T Z03Z500ER169 A23C[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 133 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A23Q245 151-5009-00 TRANSI STOR,SI G:BIPOLAR, NPN;25V , 300MA,1.2GH Z, AMPLIF I[...]

Rep laceable E lectrical P arts 8 - 134 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A23R214 321-5018-00 RES,FXD :THI CK FILM ;1.0K OHM ,1%,0.125W 50139 BCK1001F T [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 135 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A23R341 321-5002-00 RES,FXD :THI CK FILM ;15 OHM, 1%,0.125W 91637 CRCW 120615R0[...]

Rep laceable E lectrical P arts 8 - 136 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A23R501 321-5018-00 RES,FXD :THI CK FILM ;1.0K OHM ,1%,0.125W 50139 BCK1001F T [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 137 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A23Y225 158-0372-00 XTAL UNIT ,QT Z:SET OF 3 : 2 POLE MON OLITHI C CRYSTAL FIL [...]

Rep laceable E lectrical P arts 8 - 138 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A28C23 281-5004-00 CAP ,V AR,C ERAMIC :;2-6PF ,100V ,N PO+/-200PPM/C , 4 X 4.5 [...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 139 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A28C60 283-51 14-00 CAP ,FXD, CERAMI C:MLC ;0.1UF ,10%, 50V ,X7R,1206 04222 120[...]

Rep laceable E lectrical P arts 8 - 140 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A28Q4 151-5001-00 TRANSI STOR,SI G:BIPOLAR, NPN;40V , 200MA,300MH Z, AMPLIF IER[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 141 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A28R31 321-5027-00 RES,FXD :THI CK FILM ;5.62K OHM ,1%,0.125W 50139 BCK5621F T [...]

Rep laceable E lectrical P arts 8 - 142 2715 Spectrum Analyz er Service Ma nual Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number A28R71 321-5046-00 RES,FXD :THI CK FILM ;82.5 OHM ,1%,0.125W 50139 BC K82R5FT A[...]

Rep laceable E lectrical P arts 2715 Spectrum Analyze r Service Manua l 8 - 143 Replaceable El ectr i cal Part s Li st (Cont . ) Compone nt Number Mfr . Part Num ber Mfr. Code Name & Description Serial No. Di scont ’ d Serial No. Effective T ektron ix Par t Number W8 174-0196-00 CA ASSY , RF:SEM I-RIGI D;SDI ,50 OHM, 0.086 DIA ,3.34 C UT L,F [...]

Rep laceable E lectrical P arts 8 - 144 2715 Spectrum Analyz er Service Ma nual[...]

2715 Spectrum Analyze r Service Manua l 9- 1 Diagrams Refer to the 2715 Spectrum Analyz er Service Ma nual V olume 2 for block diag ram, schem atic diagram s, and parts pl acement illustra tions for the 2715 Sp ectrum An alyzer . Diagra ms in V olume 2 ar e in the following or der: INTERCONNECT DIAGRAM A18 A TTENUA TOR A16A1 1ST CONVER TER A16A2 RF[...]

Diagra ms 9- 2 2715 Spectrum Analyze r Service Manua l[...]

2715 Spectrum Analyze r Service Manua l 10 - 1 Replaceable Mechanical Par ts Thi s secti on con tains a l ist o f the repl aceable mech anical co m pone nts for the 2715. Use this list to identify a nd order r epl acement p arts. Part s Or deri ng Inf ormat ion Rep lacement p arts are avai lable t hr ough your loc al T ektronix field of fic e or re[...]

Rep laceable M echanical P arts 10 - 2 2715 Spectrum Analyz er Service Ma nual Parts List Column Descr i pt i ons Column Col umn Name Description 1 Figure & Index Number It ems in thi s section are referenced by figure and index numbers to t he exploded view illustr ation s that follow . 2 T ektronix Part Number Use this part number when orderi[...]

Rep laceable M echanical P arts 2715 Spectrum Analyze r Service Manua l 10 - 3 Manufacturer s Cross Index Mfr . Code Manufacturer Addr ess Ci t y , Stat e, Zi p Code K1072 GREE NP AR CONNECTO RS L TD PO BOX 15 H ARLOW ESSEX, C M20 2ER UK S3109 FELLER U .S. COR PORA TION 72 Veronica Ave Unit 4 Summers et N J 08873 TK0428 DLB I NDUS TRIES FR ESNO CA [...]

Rep laceable M echanical P arts 10 - 4 2715 Spectrum Analyz er Service Ma nual Manufacturer s Cross Index (Cont.) Mfr . Code City , State, Zip Code Address Manufacturer 0KBZ5 M ORELLIS Q & D PLAST ICS 1812 16TH A VE PO BOX 487 FOREST GR OVE OR 971 16-0487 0KB01 ST A UFFER SUPPL Y 810 SE SHE RMAN PORTL AND OR 97214 0KB05 NORT H ST AR NAMEPLATE 5[...]

Rep laceable M echanical P arts 2715 Spectrum Analyze r Service Manua l 10 - 5 Manufacturer s Cross Index (Cont.) Mfr . Code City , State, Zip Code Address Manufacturer 61374 BUEHL ER PRODUCTS INC PS BOX 33400 RALEI GH NC 27606 61935 S CHURTER INC 1016 CLEGG COUR T PETALUMA CA 94952-1 152 72653 GC ELE CTRONICS CO SUB OF HOUS EHOLD INTERNA TIONAL CO[...]

Rep laceable M echanical P arts 10 - 6 2715 Spectrum Analyz er Service Ma nual Replaceable M echanical Parts List Fig. & Inde x Number T ektron ix Part Number Serial No. Effective Serial No. Di scont ’ d Qty Name & Description Mfr. Code M fr . Pa rt Number 1-1 390-1 1 18-00 390-1 1 18-01 B010100 B010146 B010145 1 1 CAB.,WRA P AROUND:A LUM[...]

Rep laceable M echanical P arts 2715 Spectrum Analyze r Service Manua l 10 - 7 1 2 3 4 5 6 7 8 9 10 11 12 Figure 10 - 1: Cabinet[...]

Rep laceable M echanical P arts 10 - 8 2715 Spectrum Analyz er Service Ma nual Replaceable M echanical Parts List Fig. & Inde x Number T ektron ix Part Number Serial No. Effective Serial No. Di scont ’ d Qty Name & Description Mfr. Code M fr . Pa rt Number 2-1 348-0660-00 4 CUSHION,CRT :POL YURETHA NE 80009 348066000 -2 386-6198-00 1 SUBP[...]

Rep laceable M echanical P arts 2715 Spectrum Analyze r Service Manua l 10 - 9 Replaceable M echanical Parts List (Cont . ) Fig. & Inde x Number Mfr . Part Num ber Mfr. Code Name & Description Qty Serial No. Di scont ’ d Serial No. Effective T ektron ix Part Number -26 ----------- 1 CA ASSY , SP ,ELEC :4,26 AWG,3.0 L, RIBBON (SEE W25 REPL[...]

Rep laceable M echanical P arts 10 - 10 2715 Spectrum Analyz er Service Ma nual Replaceable M echanical Parts List (Cont . ) Fig. & Inde x Number Mfr . Part Num ber Mfr. Code Name & Description Qty Serial No. Di scont ’ d Serial No. Effective T ektron ix Part Number -51 333-4003-00 1 P ANEL FR ONT : 2714 0KB05 ORDER BY DES C -52 200-3416-[...]

Rep laceable M echanical P arts 2715 Spectrum Analyze r Service Manua l 10 - 1 1 1 2 3 4 5 6 7 8 9 A21 A5 A6 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 40 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 49 50 51 36 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 49 Figure 10 - 2: Front Panel[...]

Rep laceable M echanical P arts 10 - 12 2715 Spectrum Analyz er Service Ma nual Replaceable M echanical Parts List Fig. & Inde x Number T ektron ix Part Number Serial No. Effective Serial No. Di scont ’ d Qty Name & Description Mfr. Code M fr . Pa rt Number 3-1 ----------- 1 CABEL ASSY , RF:50 OH M COAX,9. 0 L,W/O TAG (SEE A15A1W2 REPL) -[...]

Rep laceable M echanical P arts 2715 Spectrum Analyze r Service Manua l 10 - 13 Replaceable M echanical Parts List (Cont . ) Fig. & Inde x Number Mfr . Part Num ber Mfr. Code Name & Description Qty Serial No. Di scont ’ d Serial No. Effective T ektron ix Part Number -25 21 1-0661-00 4 SCR,ASSEM W SHR:4-40 X 0. 25,PNH, STL,CD PL, POZ, MACH[...]

Rep laceable M echanical P arts 10 - 14 2715 Spectrum Analyz er Service Ma nual Replaceable M echanical Parts List (Cont . ) Fig. & Inde x Number Mfr . Part Num ber Mfr. Code Name & Description Qty Serial No. Di scont ’ d Serial No. Effective T ektron ix Part Number -54 441-1708-02 B030924 1 C HASSIS,R EAR:IN TERCON NECT ,ALUM INUM 0J 9P9[...]

Rep laceable M echanical P arts 2715 Spectrum Analyze r Service Manua l 10 - 15 A15A1 1 2 32 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 Figure 10 - 3: Power Suppl y[...]

Rep laceable M echanical P arts 10 - 16 2715 Spectrum Analyz er Service Ma nual Replaceable M echanical Parts List Fig. & Inde x Number T ektron ix Part Number Serial No. Effective Serial No. Di scont ’ d Qty Name & Description Mfr. Code M fr . Pa rt Number 4-1 ----------- 1 FIL TER ,LOW P ASS:D C TO 1.8GH Z (SEE FL16 REPL) -2 352-0482-00[...]

Rep laceable M echanical P arts 2715 Spectrum Analyze r Service Manua l 10 - 17 Replaceable M echanical Parts List (Cont . ) Fig. & Inde x Number Mfr . Part Num ber Mfr. Code Name & Description Qty Serial No. Di scont ’ d Serial No. Effective T ektron ix Part Number -31 210-0940-00 4 WASHER,F LA T :0. 25 ID X 0.375 OD X 0. 02,STL 12327 OR[...]

Rep laceable M echanical P arts 10 - 18 2715 Spectrum Analyz er Service Ma nual 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 A17 A14A1 A18 A16 Figure 10 - 4: Chassis #1[...]

Rep laceable M echanical P arts 2715 Spectrum Analyze r Service Manua l 10 - 19 Replaceable M echanical Parts List Fig. & Inde x Number T ektron ix Part Number Serial No. Effective Serial No. Di scont ’ d Qty Name & Description Mfr. Code M fr . Pa rt Number 5-1 21 1-071 1-00 4 SCR ,ASSEM WSH R:6-32 X 0.250, PNH,ST L,CDPL, T- 15 TORX DR,MA[...]

Rep laceable M echanical P arts 10 - 20 2715 Spectrum Analyz er Service Ma nual Replaceable M echanical Parts List (Cont . ) Fig. & Inde x Number Mfr . Part Num ber Mfr. Code Name & Description Qty Serial No. Di scont ’ d Serial No. Effective T ektron ix Part Number -29 21 1-0162-00 9 SCREW,MAC HINE: 2-56 X 0.188,SCH ,SST T K0428 ORDER BY[...]

Rep laceable M echanical P arts 2715 Spectrum Analyze r Service Manua l 10 - 21 Replaceable M echanical Parts List (Cont . ) Fig. & Inde x Number Mfr . Part Num ber Mfr. Code Name & Description Qty Serial No. Di scont ’ d Serial No. Effective T ektron ix Part Number -53 21 1-071 1-00 4 SCR ,ASSEM WSH R:6-32 X 0.250, PNH,ST L,CDPL, T- 15 T[...]

Rep laceable M echanical P arts 10 - 22 2715 Spectrum Analyz er Service Ma nual 1 2 3 4 5 6 7 8 A13A1 A12A1 A12A3 A12A2 A10 A9 A7 A23 A1 1 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 Figure 10 - 5: Chassis #2[...]

Rep laceable M echanical P arts 2715 Spectrum Analyze r Service Manua l 10 - 23 Replaceable M echanical Parts List Fig. & Inde x Number T ektron ix Part Number Serial No. Effective Serial No. Di scont ’ d Qty Name & Description Mfr. Code M fr . Pa rt Number 6-1 161-0104-00 1 CA ASSY , PWR:3, 18 A WG, 98 L,250V/10AMP ,98 INCH,RT ANG,IE C 3[...]

Rep laceable M echanical P arts 10 - 24 2715 Spectrum Analyz er Service Ma nual Replaceable M echanical Parts List (Cont . ) Fig. & Inde x Number Mfr . Part Num ber Mfr. Code Name & Description Qty Serial No. Di scont ’ d Serial No. Effective T ektron ix Part Number -7 103-0301-00 103 – 0310 – 00 1 1 ADAPTER ,CONN :F SERI ES,FEMALE T [...]

Rep laceable M echanical P arts 2715 Spectrum Analyze r Service Manua l 10 - 25 1 2 3 4 5 6 7 8 9 Figure 10 - 6: Accessor i es[...]

Rep laceable M echanical P arts 10 - 26 2715 Spectrum Analyz er Service Ma nual[...]

Ser vic e Manual 2715 Sp ectru m Ana ly zer Vo l u m e 2 070-9096-06 This doc ume nt suppor ts f ir mwar e ver si on 12.01. 95 and a bove. W a rnin g Th e servicin g in structio ns are fo r use b y q ualified per sonne l onl y . T o avoi d per sona l i njur y , do not perfo rm any serv icing u nless yo u are q ualified to do so. R efer to all safet[...]

Copyright © T ekt ronix, Inc. All rights reserved. T ektroni x products are cove red by U.S. and fore ign patent s, issued and pending. Informat ion in thi s public ation superc edes that in al l previously publ ished mat erial . Specifi cati ons a nd price c hange privi leges reserve d. T ektroni x, Inc., P .O. Box 500, Beavert on, OR 97077 TEKT [...]

W ARRANTY T ektroni x w a rrants that t his product will be free from defe cts in ma teria ls and workmanship for a pe riod of one (1) yea r from the date of shipment . If any such product proves defec tive duri ng this warranty pe riod, T ektroni x, at i ts option, e ither will repa ir the defec tive product wit hout charge for part s and labor, o[...]

[...]

2715 Spectrum Analyze r Service Manua l i T able of Contents Gen eral Sa fety Su mmary iii ................................... Serv ice Sa fety Su mmary v .................................... Diagr ams Diagrams and Circ u it B oar d Illu st rations 9- - 1 ..................... Symbols 9 - - 1 ....................................................... [...]

T able of Contents ii 2715 Spectrum Analyze r Service Manua l A15A1 P ower Supply Front (sect ions C and D) 9 - - 183 ........................ A15A1 P ower Supply Ba ck (sections A and B) 9- - 184 ......................... A15A1 P ower Supply Ba ck (sections C and D) 9- - 185 ......................... A15A1 P ower Supply Com ponent Loca tor 9- - 18[...]

2715 Spectrum Analyze r Service Manua l iii General Safety Summar y Rev iew the fol lowi ng safety p recautio ns to avo id inj ury and prev ent damag e to this product or any products c onnected to it. T o avoid potentia l h azard s, u se thi s product only a s specifie d. Only qualified pe rsonnel should perform serv ice pr oce dur es. While using[...]

General S afety S ummary iv 2715 Spectrum Analyze r Service Manua l Keep Product Sur faces Clean and Dry . Provide Proper Venti lation. R e fer to the manual’ s installation instr uctions for details on insta lling the product so it ha s proper ve ntilation. T er ms in this M anual. These ter ms may appea r in this manual: W ARNING. W arning stat[...]

2715 Spectrum Analyze r Service Manua l v Service S afety Summary Only qualifie d personnel should pe rform se rvice pr ocedure s. R e ad this Serv ice Safety Summary and t he Gene ral Safety Summary before perfo rming any s ervice proce dures. Do Not Service Alone. Do not perf orm interna l service or adjustments of this product unle ss another pe[...]

Service Saf ety S umma ry vi 2715 Spectrum Analyze r Service Manua l[...]

2715 Spectrum Analyze r Service Manua l vii Preface This manual contains ser vice informa tion for the 2715 Spectrum Analyz er . The servic e informa tion is located in two volume s. V olume 1 conta ins the mainte- nance procedur es and par ts lists. V olume 2 conta ins the component loc ators and schema tic diagrams. The following manuals ar e als[...]

Preface viii 2715 S pec trum Analyzer Ser vice Manual Contact ing T ektr onix Phone 1-800-833-9200 * Address T e ktronix, Inc. Departm ent or nam e (if known) 14200 SW Karl Braun Drive P .O. Box 500 Beave rton, OR 97077 USA Web si te www . tektroni x.com Sales support 1-800-833-9200, sele ct opti on 1 * Service support 1-800-833-9200, sele ct opti [...]

9- 1 2715 Spectrum Analyze r Service Manua l Diagrams and C ircuit Board Illustr ations This section c ontains the trouble shooting procedur es, block diagra ms, circuit boa rd illustrations, component loc ator table s, wavefor m illustrations, and sche matic diagr ams. Symbol s Graphic symbols and class de signation letter s are ba sed on ANSI Sta[...]

2715 Spectrum Analyze r Service Manua l 9- 2 1.85 GHZ* Atten A18 P250 P100 P150 W7 P210 RF Input P/O Front Panel Low Pass Filter P150 W4 P350 RF RF Input 1st Converter 1st Mixer Assembly P300 4.5 GHZ W30 Low Pass Filter W31 LO P130 W8 2.1 1 GHZ Band Pass Filter Locked 2nd LO RF Mother A14 P670 W10 P100 P 190 J1 J2 VR A13 P150 P100 P620 RF Option A2[...]

9- 3 2715 Spectrum Analyze r Service Manua l Pin # A 1 5J 1t o CRT SKT A 1 5J 2t o RP ANL P ots A 1 5J 3t o Rear Con A23 RF O PT J4 A5 J5 SWEEP A6 J6 FRONT P A NEL A7 J7 LOG A1 1 J 8 RS232/GPI B A9 J9 DISP STO R A10 J1 0 uPROC A12 J11 PL/CF C A28 J1 2 VIDEO DEMO D A13 J1 3 VR A14 J1 4 RF MOTHER 1 2 3 4 5 CRT - - 12 CRT - - 1 1 CRT - - 10 CRT - - 9 [...]

2715 Spectrum Analyze r Service Manua l 9- 4 C1 10 A - 1 1B 2 C 111 A - 1 1 C 2 C1 12 A - 1 1C2 C138 C-1 1A4 C143 D-1 1A4 C144 D-1 1A4 C145 D-1 1D5 C151 D-1 1D5 C210 B-2 1B3 C220 B-2 1B4 C222 B-3 1B3 C225 B-2 1B5 C228 B-3 1B4 C230 C-2 1D2 C232 C-3 1B5 C233 B-1 1B6 C235 C-2 1D3 C238 C-3 1C2 C239 C-1 1D2 C240 C-2 1D4 C242 C-3 1C3 C244 D-3 1C4 C245 D-[...]

9- 5 2715 Spectrum Analyze r S e rvice Manua l 2715 1 RF A TT ENUA TOR A 18[...]

2715 Spectrum Analyze r Service Manua l 9- 6 Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix — se e end of Re placeable Electrical P arts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number C105 A - -4 1B 5 C106 A - -4 1C5 C[...]

9- 7 2715 Spectrum Analyze r S e rvice Manua l 1 1ST CONVER TER A16A1 2715[...]

2715 Spectrum Analyze r Service Manua l 9- 8 Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number C151 A - -1 1B 5 C240 B - -1 1C5 C24[...]

2715 Spectrum Analyze r Service Manua l 9- 9 1 RF INPUT A16A2 2715[...]

2715 Spectrum Analyze r Service Manua l 9- 1 0 Component Number A23 A2 R1234 Chassis- mou nted components have no Asse m bly Number prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number C130 A - -1 1C3 C140 B - -1 1B 4 C150 B -[...]

9- 1 1 2715 Spectrum Analyze r Service Manua l 1 YIG BUFFER AMPLIF IER A17 2715[...]

2715 Spectrum Analyze r Service Manua l 9- 1 2 Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number Front Bac k C120 B - -1 1A 4 C240 [...]

9- 1 3 2715 Spectrum Analyze r Service Manua l 2715 1 1ST LO I NTERFACE A 19A1[...]

2715 Spectrum Analyze r Service Manua l 9- 1 4[...]

9- 1 5 2715 Spectrum Analyze r Service Manua l 2715 2 1ST LO A19[...]

2715 Spectrum Analyze r Service Manua l 9- 1 6 Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number Figure 1-8: A12A1 Phaselock CFC (f[...]

9- 1 7 2715 Spectrum Analyze r Service Manua l Figure 1-9: A12A1 Phaselock CFC (back)[...]

2715 Spectrum Analyze r Service Manua l 9- 1 8 C100 A-1 1C2 C101 A-1 1C2 C1 12 A - 1 1B 2 C120 B-1 1A2 C141 C-1 6A4 C150 C-1 6D5 C200 A-2 1C2 C201 A-2 1C2 C205 A-2 1C2 C21 1 A - 1 1C3 C213 A-2 1C3 C214 A-2 1A2 C220 B-1 1B2 C221 B-1 1A4 C230 B-2 1B5 C231 B-2 1D5 C235 B-2 1B5 C240 C-1 2B4 C245 C-2 2B4 C251 C-2 2B3 C252 C-2 2B2 C255 C-2 2B3 C262 D-2 3[...]

9- 1 9 2715 Spectrum Analyze r Service Manua l PHASELOCK CFC BOARD SI GNAL I NTE RCONNECT A12A 1 2715 0[...]

2715 Spectrum Analyze r Service Manua l 9- 2 0[...]

9- 2 1 2715 Spectrum Analyze r Service Manua l 2715 PHASELOCK C FC A12A1 1[...]

2715 Spectrum Analyze r Service Manua l 9- 2 2[...]

9- 2 3 2715 Spectrum Analyze r Service Manua l 2715 2 PHASELOCK C FC A12A1[...]

2715 Spectrum Analyze r Service Manua l 9- 2 4[...]

9- 2 5 2715 Spectrum Analyze r Service Manua l PHASELOCK C FC A12A1 2715 3[...]

2715 Spectrum Analyze r Service Manua l 9- 2 6[...]

9- 2 7 2715 Spectrum Analyze r Service Manua l ‘‘ D C B A 2 1 3 4 6 5 A12A1 4 PHASELOCK C FC --- 5 V R E F --- 5 V R E F --- 5 V R E F --- 5 V R E F --- 5 V R E F R236 3.01k C741 0.1 C738 0.1 R241 15.0k OP07 U852 C337 0.1 C338 0.1 R336 100 R339 100 R921 4k R924 * C920 0.1 L351 82uH R350 10 +8. 5V C352 10uF +8. 5V L451 82uH R450 10 C452 10uF C94[...]

2715 Spectrum Analyze r Service Manua l 9- 2 8[...]

9- 2 9 2715 Spectrum Analyze r Service Manua l C312 10uF 10uF C310 U811 OP07 R812 39.2k - - - 8.5V +8. 5V Z INH X0 X1 Y0 Z1 Y1 Z0 X Y C B A U830 10uF C322 - - - 8.5V U820 OP07 C321 10uF 100 R320 +8. 5V R816 2.34k R331 3.39k 1k R330 U821 OP07 C825 100 R820 56.2k R822 4k 1.8k R821 C824 100 100 R823 V+ V --- HA 5002 C812 100 R813 1.00k 68.1 R313 68.1 [...]

2715 Spectrum Analyze r Service Manua l 9- 3 0[...]

9- 3 1 2715 Spectrum Analyze r Service Manua l 2715 6 PHASELOCK CFC POWER SUPPL Y A12A1[...]

2715 Spectrum Analyze r Service Manua l 9- 3 2 C103 A-1 1C6 C1 10 A-1 1B2 C1 1 1 B-1 1B2 C12 0 B-1 1 B2 C133 C-1 1A2 C20 0 A-2 1 B6 C20 4 A-2 1 B6 C21 2 A-2 1 A3 C22 2 B-2 1 A2 C231 C-2 1A2 C22 4 B-2 1 A4 C233 C-2 1A5 C234 C-2 1A5 C30 2 A-3 1 B3 C31 0 A-2 1 A4 C331 C-3 1A5 C332 C-3 1A5 C333 C-3 1C2 C40 4 A-3 1 B3 C40 7 A-4 1 B3 C41 2 B-4 1 B5 C41 3[...]

9- 3 3 2715 Spectrum Analyze r Service Manua l 2715 1 HF VCO A12A2[...]

2715 Spectrum Analyze r Service Manua l 9- 3 4 Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix — se e end of Re placeable Electrical P arts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number C100 A-1 1D1 C1 10 A - 1 1D3 C12[...]

9- 3 5 2715 Spectrum Analyze r Service Manua l LF VCO A12A3 1 2715[...]

2715 Spectrum Analyze r Service Manua l 9- 3 6 A B 12 Component Number A23 A2 R1234 Chassis- mou nted components have no Asse m bly Number prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number C702 C619 C620 U610 Q541 L61 1 C72[...]

9- 3 7 2715 Spectrum Analyze r Service Manua l C100 A-2 4C3 C101 A-2 4C3 C121 A-1 1D4 C130 A-2 1C5 C131 A-2 1C5 C132 A-2 1D5 C133 A-2 1D5 C134 A-2 2C5 C14 0 A-2 2 A4 C14 1 A-2 2 A4 C14 2 A-2 2 B4 C14 3 A-2 2 B4 C144 A-2 2C5 C15 0 A-2 3 A6 C15 0 A-2 3 B6 C15 2 A-2 3 B6 C153 A-2 3C6 C154 A-2 2C6 C15 5 A-2 3 B6 C165 A-2 1D4 C200 A-1 4D3 C201 B-1 2C5 C[...]

2715 Spectrum Analyze r Service Manua l 9- 3 8[...]

9- 3 9 2715 Spectrum Analyze r Service Manua l SI GNAL I NTE RCONNECT RF MOT HER BOAR D A14 0 2715[...]

2715 Spectrum Analyze r Service Manua l 9- 4 0[...]

9- 4 1 2715 Spectrum Analyze r Service Manua l RF MO THER A14 1 2715[...]

2715 Spectrum Analyze r Service Manua l 9- 4 2[...]

9- 4 3 2715 Spectrum Analyze r Service Manua l 2 RF MO THER A14 2715[...]

2715 Spectrum Analyze r Service Manua l 9- 4 4[...]

9- 4 5 2715 Spectrum Analyze r Service Manua l 3 RF MOTHER A14 2715[...]

2715 Spectrum Analyze r Service Manua l 9- 4 6[...]

9- 4 7 2715 Spectrum Analyze r Service Manua l 2715 4 RF MOTHER A14 68.1 R213[...]

2715 Spectrum Analyze r Service Manua l 9- 4 8 A B 1 Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number L3 L6 L7 L8 L9 U5 U3 U9 L2 C[...]

9- 4 9 2715 Spectrum Analyze r Service Manua l C1* A1 1B2 C10* A1 1B5 C12* A1 1B5 C13* A1 1B5 C14 A1 1B6 C15* A1 1B4 C16* A1 1B5 C17 A1 1B6 C18 A1 1C6 C19* A1 1B5 C2* A1 1B1 C20* A1 1C6 C21 A1 1B4 C22 A1 1B4 C23 A1 1B4 C24 A1 1B4 C25 A1 1C6 C26* A1 1C6 C27* A1 2B2 C28 A1 1B6 C29* A1 1D1 C3* A1 1B2 C30 A1 1C5 C31* A1 1D1 C32* A1 2D4 C33* B1 2D4 C34*[...]

2715 Spectrum Analyze r Service Manua l 9- 5 0[...]

2715 Spectrum Analyze r Service Manua l 9- 5 1 2715 0 SI GNAL I NTE RCONNECT A28 VIDEO DEMOD BO AR D[...]

9- 5 2 2715 S pe ctrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 9- 5 3 2715 1 A28 DEMO D 1 VIDEO DEMOD BO AR D NO T USED[...]

9- 5 4 2715 S pe ctrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 9- 5 5 2 DEMO D 2 A28 VIDEO DEMOD BO AR D 2715 1.21K NOT USED NO T USED 10.0K 10.0K 825 8.25K[...]

2715 Spectrum Analyze r Service Manua l 9- 5 6 A B 12 3 Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix—se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number T1 J550 U9 U10 J150 J140 U1[...]

9- 5 7 2715 Spectrum Analyze r Service Manua l BT1 B1 2A3 C1 B3 1D4 C10 A1 1D6 C1 1 A 3 1D6 C12 B1 1D4 C13 A2 1D4 C14 A1 1D5 C15 B3 1D5 C16 A1 1D5 C17 A1 1D5 C18 A1 1D5 C19 B1 1D5 C2 B1 1D4 C20 A2 1D6 C21 A2 1D6 C22 A2 1D6 C23 A2 1D6 C24 A1 2B4 C25 A1 4D4 C26 A1 2C3 C27 A3 3A5 C28 A3 3A5 C29 A3 5B2 C3 A1 1D5 C30 A3 3B5 C31 A3 5C4 C32 A3 3B5 C33 A1 [...]

2715 Spectrum Analyze r Service Manua l 9- 5 8[...]

2715 Spectrum Analyze r Service Manua l 9- 5 9 SI GNAL I NTE RCONNECT A1 1 DIGIT AL OP TIONS BOAR D 0 2715[...]

9- 6 0 2715 S pe ctrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 9- 6 1 1 MICROPROCESSOR BUS INTERF ACE DIGIT AL OP TIONS BOAR D A1 1 2715[...]

9- 6 2 2715 S pe ctrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 9- 6 3 2715 2 PHASE LOCKED LOOP , EPROM AND NVRAM A1 1 DIGIT AL OP TIONS BOAR D[...]

9- 6 4 2715 S pe ctrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 9- 6 5 REAL - - TI ME CLO CK AND RS232 INT ERF A CE DIGIT AL OP TIONS BOAR D A1 1 3 2715[...]

9- 6 6 2715 S pe ctrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 9- 6 7 4 VID EO GA TIN G LOGIC A ND GPIB INTE RF AC E DIGIT AL OP TIONS BOAR D A1 1 2715[...]

9- 6 8 2715 S pe ctrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 9- 6 9 2715 IF GA TE A1 1 DIGIT AL OP TIONS BOAR D 5[...]

2715 Spectrum Analyze r Service Manua l 9- 7 0 Component Number A23 A2 R1234 Chassis- mou nted components have no Asse m bly Number prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number Front Back Figure 1-19: A13 V ariable Res[...]

9- 7 1 2715 Spectrum Analyze r Service Manua l C103 A-1 3C6 C10 4 A-1 3 B6 C105 A-1 3D5 C10 6 A-1 4 B5 C1 10 B-1 4B5 C133 D-1 4B1 C135 D-1 4B2 C14 1 E-1 4 B1 C14 7 E-1 4 A2 C153 F-1 3D6 C154 F-1 2A4 C164 G-1 2B3 C165 G-1 3D6 C166 G-1 1C5 C170 G-1 1D5 C171 H-1 3D6 C172 H-1 1C2 C173 H-1 1D2 C182 I-1 3D5 C183 I-1 1A5 C187 I-1 1B5 C191 J-1 3D6 C201 A-2[...]

2715 Spectrum Analyze r Service Manua l 9- 7 2[...]

9- 7 3 2715 Spectrum Analyze r S e rvice Manua l 0 SI GNAL I NTE RCONNECT V ARIABLE RES0LU T ION BOARD A13 2715[...]

2715 Spectrum Analyze r S e rvice Manua l 9- 7 4[...]

9- 7 5 2715 Spectrum Analyze r S e rvice Manua l 1 V ARIABLE RESOLU TI ON A13 2715[...]

2715 Spectrum Analyze r S e rvice Manua l 9- 7 6[...]

9- 7 7 2715 Spectrum Analyze r S e rvice Manua l 2 A13 V ARIABLE RESOLUTION 2715[...]

2715 Spectrum Analyze r S e rvice Manua l 9- 7 8[...]

9- 7 9 2715 Spectrum Analyze r S e rvice Manua l 3 V ARIABLE RESOLUTION A13 2715[...]

2715 Spectrum Analyze r S e rvice Manua l 9- 8 0[...]

9- 8 1 2715 Spectrum Analyze r S e rvice Manua l 4 V ARIABLE RESOLUTION A13 2715[...]

2715 Spectrum Analyze r Service Manua l 9- 8 2 Component Number A23 A2 R1234 Chassis- mou nted components have no Asse m bly Number prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number Figure 1-21: A23 RF Options[...]

9- 8 3 2715 Spectrum Analyze r Service Manua l C100 A-1 1D3 C1 1 1 B-1 3A6 C12 0 B-1 3 B4 C142 D-1 2B5 C15 0 E-1 2 B5 C180 G-1 2A1 C191 H-1 1D3 C205 A-2 3C5 C206 A-2 3C5 C207 A-2 3C5 C208 A-2 3C5 C209 A-2 3C5 C210 A-1 3C4 C21 1 B-1 3B5 C22 0 B-1 3 B5 C22 1 B-1 3 B5 C22 2 B-1 3 B5 C223 C-1 3B4 C230 C-1 3B4 C231 C-1 3B4 C232 C-1 3B4 C233 C-1 3B3 C234[...]

2715 Spectrum Analyze r Service Manua l 9- 8 4[...]

9- 8 5 2715 Spectrum Analyze r Service Manua l 2715 0 SI GNAL I NTE RCONNECT A23 RF OPTION BOA RD[...]

2715 Spectrum Analyze r Service Manua l 9- 8 6[...]

9- 8 7 2715 Spectrum Analyze r Service Manua l 1 RF OP TION A23 2715[...]

2715 Spectrum Analyze r Service Manua l 9- 8 8[...]

9- 8 9 2715 Spectrum Analyze r Service Manua l 2715 2 RF OP TION A23[...]

2715 Spectrum Analyze r Service Manua l 9- 9 0[...]

9- 9 1 2715 Spectrum Analyze r Service Manua l 2715 3 RF OP TION A23[...]

2715 Spectrum Analyze r Service Manua l 9- 9 2 Component Number A23 A2 R1234 Chassis- mou nted components have no Asse m bly Number prefix — se e end of Re placeable Electrical P arts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number Figure 1-23: A7 Log Amp (f ront)[...]

9- 9 3 2715 Spectrum Analyze r Service Manua l Figure 1-24: A7 Log Amp (back)[...]

2715 Spectrum Analyze r Service Manua l 9- 9 4 C152 D-1 6A5 C170 E-1 1B6 C171 E-1 1B6 C190 G-1 1C2 C191 G-1 1B3 C230 C- - 1 4B5 C232 C- - 2 4A4 C233 C-1 6C4 C240 C-1 6C4 C241 D-1 6A5 C242 D-1 6A5 C243 D-1 6A5 C250 D-1 6A4 C251 D-1 6C4 C252 E-1 6C4 C253 E-1 6C4 C254 D-2 6A3 C260 E-1 2B5 C270 F-1 1C6 C280 F-1 1C4 C281 F-1 1C3 C282 G-2 1B5 C283 G-2 1D[...]

9- 9 5 2715 Spectrum Analyze r S e rvice Manua l 2715 LOG AMP BOARD A7 SI GNAL I NTE RCONNECT 0[...]

2715 Spectrum Analyze r Service Manua l 9- 9 6[...]

9- 9 7 2715 Spectrum Analyze r S e rvice Manua l 2715 LOG AMP BOARD A7 NOT USED 1[...]

2715 Spectrum Analyze r Service Manua l 9- 9 8[...]

9- 9 9 2715 Spectrum Analyze r S e rvice Manua l 2715 LOG AMP BOARD A7 2[...]

2715 Spectrum Analyze r Service Manua l 9 - 100[...]

9 - 101 2715 Spectrum Analyze r S e rvice Manua l LOG AMP BOARD A7 2715 3[...]

2715 Spectrum Analyze r Service Manua l 9 - 102[...]

9 - 103 2715 Spectrum Analyze r S e rvice Manua l 2715 LOG AMP BOARD A7 4[...]

2715 Spectrum Analyze r Service Manua l 9 - 104[...]

9 - 105 2715 Spectrum Analyze r S e rvice Manua l 2715 LOG AMP BOARD A7 5[...]

2715 Spectrum Analyze r Service Manua l 9 - 106[...]

9 - 107 2715 Spectrum Analyze r S e rvice Manua l 2715 A7 LOG AMP BOARD 6[...]

2715 Spectrum Analyze r Service Manua l 9 - 108 Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number C1 12 A - - 1 1A1 C140 C- - 1 1A5[...]

9 - 109 2715 Spectrum Analyze r S e rvice Manua l 0 A21 SI GNAL I NTE RCONNECT REF ERENCE O SCI LLA TO R BO ARD 2715[...]

2715 Spectrum Analyze r S e rvice Manua l 9- 1 1 0[...]

9 - 111 2715 Spectrum Analyze r S e rvice Manua l 2715 1 REF ERENCE O SCILLA TO R A 21[...]

2715 Spectrum Analyze r S e rvice Manua l 9- 1 1 2[...]

9- 1 1 3 2715 Spectrum Analyze r S e rvice Manua l 2715 2 REF ERENCE O SCILLA TO R A21[...]

2715 Spectrum Analyze r Service Manua l 9- 1 1 4 Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number Figure 1-27: A10 Mi cr oprocesso[...]

9- 1 1 5 2715 Spectrum Analyze r Service Manua l Figure 1-28: A10 Mi cr oprocessor (back)[...]

2715 Spectrum Analyze r Service Manua l 9- 1 1 6 C1 10 A - 1 8D2 C128 B-1 8A4 C174 E-1 7D6 C175 F-1 7C3 C183 F-1 7B3 C184 F-1 7D3 C210 A-1 8D2 C228 B-2 8B4 C261 D- - 2 1C3 C275 E-2 8B4 C280 F-2 8B4 C295 G-2 8A4 C310 A-2 8D2 C328 B-2 8A4 C361 D-3 1A2 C362 D-2 1A2 C365 E-2 8A4 C370 E-2 8A4 C380 F-2 8B4 C385 F-2 8A3 C395 G-2 8B4 C410 A-3 8D2 C428 B-3 [...]

9- 1 1 7 2715 Spectrum Analyze r S e rvice Manua l 0 SI GNAL I NTE RCONNECT A 10 MICROPROCESSOR BOARD 2715[...]

2715 Spectrum Analyze r Service Manua l 9- 1 1 8[...]

9- 1 1 9 2715 Spectrum Analyze r S e rvice Manua l CLOCK , CPU, AND INT ERRUPT CO NTRO LLER MICROPROCESSOR BOARD A10 1 2715[...]

2715 Spectrum Analyze r Service Manua l 9 - 120[...]

9 - 121 2715 Spectrum Analyze r S e rvice Manua l RAM A10 MICROPROCESSOR BOARD 2 2715[...]

2715 Spectrum Analyze r Service Manua l 9 - 122[...]

9 - 123 2715 Spectrum Analyze r S e rvice Manua l ROM A10 MICROPROCESSOR BOARD 3 2715[...]

2715 Spectrum Analyze r Service Manua l 9 - 124[...]

9 - 125 2715 Spectrum Analyze r S e rvice Manua l 2715 CONT ROL A 10 MICROPROCESSOR BOARD 4[...]

2715 Spectrum Analyze r Service Manua l 9 - 126[...]

9 - 127 2715 Spectrum Analyze r S e rvice Manua l 5 FRE QUENCY CO UNTE RS MICROPROCESSOR BOARD A10 2715[...]

2715 Spectrum Analyze r Service Manua l 9 - 128[...]

9 - 129 2715 Spectrum Analyze r S e rvice Manua l FREQUENCY C OUNTERS AND I/O SUBSYSTEM A10 MICROPROCESSOR BOARD 6 2715[...]

2715 Spectrum Analyze r Service Manua l 9 - 130[...]

9 - 131 2715 Spectrum Analyze r S e rvice Manua l COUNTER INPU T SELECT MICROPROCESSOR BOARD A10 7 2715[...]

2715 Spectrum Analyze r Service Manua l 9 - 132[...]

9 - 133 2715 Spectrum Analyze r S e rvice Manua l CONNE CTORS A ND DECOUP LING A10 MICROPROCESSOR BOARD 8 2715[...]

2715 Spectrum Analyze r Service Manua l 9 - 134 A B 12 3 Component Number A23 A2 R1234 Chassis- mou nted components have no Asse m bly Number prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number C103 C104 Q1 C94 C101 R174 R181[...]

9 - 135 2715 Spectrum Analyze r Service Manua l A B 12 R179 R182 R 78 R180 C38 R72 C32 C92 R50 C99 C98 R77 C39 R30 C48 C95 R49 C31 C33 C42 R73 C30 R178 C102 C37 R55 R130 C15 R165 C70 R157 R151 R156 R152 R158 R153 R137 R134 R159 R125 R1 18 R121 R132 R154 R155 R161 R166 R160 R133 R147 R126 R131 R129 R176 R1 17 R187 R167 R1 15 R169 R120 R124 R123 R122[...]

2715 Spectrum Analyze r Service Manua l 9 - 136 BT1 A1 6B6 C1 A2 9B 4 C10 A2 9C2 C100 A2 2B5 C101 A2 2B5 C102* A 1 1 1B3 C103 A2 1 1B 2 C104 A2 1 1C2 C1 1 A 3 9B3 C12 A3 9C4 C13 B2 9C4 C14 A3 9D2 C15* A1 9C2 C16 B3 9B4 C17 B2 9C3 C18 A3 9B3 C19 A1 12C2 C2 A3 9C5 C20 A2 12C2 C21 B1 12C3 C22 B2 12C1 C23 A3 12D1 C24 B1 12C3 C25 A1 12C3 C26 B3 12C1 C27[...]

9 - 137 2715 Spectrum Analyze r Service Manua l 1 2715 SI GNAL I NTE RCONNECT A9 DISPLA Y STORAGE BOARD[...]

2715 Spectrum Analyze r Service Manua l 9 - 138[...]

9 - 139 2715 Spectrum Analyze r Service Manua l (NOT USED) (NOT USED) (NOT USED) 2 CONNE CTORS A9 2715 DISPLA Y STORAGE BOARD[...]

2715 Spectrum Analyze r Service Manua l 9 - 140[...]

9 - 141 2715 Spectrum Analyze r Service Manua l ADDRES S DECODI NG AND DA T A BUF FERI NG A9 2715 DISPLA Y STORAGE BOARD 3[...]

2715 Spectrum Analyze r Service Manua l 9 - 142[...]

9 - 143 2715 Spectrum Analyze r Service Manua l CONT ROL RE GI STE RS A9 4 2715 DISPLA Y STORAGE BOARD[...]

2715 Spectrum Analyze r Service Manua l 9 - 144[...]

9 - 145 2715 Spectrum Analyze r Service Manua l 2715 5 A9 HORI ZO NT AL T RACKI NG A/ D CONT ROL DISPLA Y STORAGE BOARD[...]

2715 Spectrum Analyze r Service Manua l 9 - 146[...]

9 - 147 2715 Spectrum Analyze r Service Manua l 2715 6 A9 VER TI CAL D A T A PROCESSING AND NVRAM DISPLA Y STORAGE BOARD[...]

2715 Spectrum Analyze r Service Manua l 9 - 148[...]

9 - 149 2715 Spectrum Analyze r Service Manua l 2715 READOUTS AND W A VEF ORM DR A W INGS A9 DISPLA Y STORAGE BOARD 7[...]

2715 Spectrum Analyze r Service Manua l 9 - 150[...]

9 - 151 2715 Spectrum Analyze r Service Manua l UP/DOWN COMP ARAT ORS HORIZO NT AL INP UT B UFFER HORIZO NT AL TR ACKING D AC 2715 8 A9 HORI ZO NT AL I NPUT DISPLA Y STORAGE BOARD[...]

2715 Spectrum Analyze r Service Manua l 9 - 152[...]

9 - 153 2715 Spectrum Analyze r Service Manua l A/D CO NVERT ER REF ERENCE (+2 V OL TS ) - -VR REFERENC E (+5 VO L TS) VERT ICAL INP UT B UFFER VERT ICAL FLA SH A DC - - VR REFERENCE (+5 V OL TS ) 2715 VERTI CAL I NPUT A ND ADC DISPLA Y STORAGE BOARD A9 9[...]

2715 Spectrum Analyze r Service Manua l 9 - 154[...]

9 - 155 2715 Spectrum Analyze r Service Manua l 10 HORI ZO NT AL O UTPUT DISPLA Y STORAGE BOARD A9 2715[...]

2715 Spectrum Analyze r Service Manua l 9 - 156[...]

9 - 157 2715 Spectrum Analyze r Service Manua l 11 A9 VER TI CAL OUTPUT DISPLA Y STORAGE BOARD 2715[...]

2715 Spectrum Analyze r Service Manua l 9 - 158[...]

9 - 159 2715 Spectrum Analyze r Service Manua l 12 A9 MISCELLAN EOUS DISPLA Y STORAGE BOARD 2715[...]

2715 Spectrum Analyze r Service Manua l 9 - 160 Comp one nt Nu mber A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix—se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number C130 B-1 2D4 C131 B-1 3B3 C140 C[...]

9 - 161 2715 Spectrum Analyze r S e rvice Manua l 2715 SI GNAL I NTE RCONNECT A6 FRONT P ANEL BOARD 0[...]

9 - 162 2715 Spectrum Analyze r Service Manua l[...]

9 - 163 2715 Spectrum Analyze r S e rvice Manua l SWITC H MA TRIX A6 FRONT P ANEL BOARD 2715 1[...]

9 - 164 2715 Spectrum Analyze r Service Manua l[...]

9 - 165 2715 Spectrum Analyze r S e rvice Manua l OUTP UT SH IFT RE GISTER S AN D POTS A6 FRONT P ANEL BOARD 2715 2[...]

9 - 166 2715 Spectrum Analyze r Service Manua l[...]

9 - 167 2715 Spectrum Analyze r S e rvice Manua l GRA Y CODE AND SER VICE REQUEST/ACKNOWLEDGE A6 FRONT P ANEL BOARD 2715 3[...]

9 - 168 2715 Spectrum Analyze r Service Manua l[...]

9 - 169 2715 Spectrum Analyze r S e rvice Manua l INP UT SHIF T REG IST ERS AND LEDS A6 FRONT P ANEL BOARD 2715 4[...]

2715 Spectrum Analyze r Service Manua l 9 - 170 A B 12 Component Number A23 A2 R1234 Chassis- mou nted components have no Asse m bly Number prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number TP5 TP4 TP7 TP8 TP1 TP6 TP3 TP2 J[...]

9 - 171 2715 Spectrum Analyze r Service Manua l C130 A1 1C2 C150 A1 4A5 C160 A1 1C2 C161 A2 4A1 C165 A1 4A5 C176 A2 4C3 C210 A1 1D2 C220 A1 2B2 C230 A1 2B2 C231 A1 1D2 C252 A1 4B5 C253 A1 4B5 C262 A2 4B1 C310 A1 1D2 C31 1 A 1 3C2 C322 A1 1D3 C383 A2 1D2 C384 A2 1D3 C391 A2 1D1 C410 A1 1D3 C420 A1 1D6 C421 A1 1D5 C430 A1 2B1 C431 A1 1D2 C475 A2 4D6 [...]

2715 Spectrum Analyze r Service Manua l 9 - 172[...]

2715 Spectrum Analyze r Service Manua l 9 - 173 A5 2715 SI GNAL I NTE RCONNECT SWEEP BOARD 0[...]

9 - 174 2715 Spectrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 175 VI DEO BUF FERI NG A5 2715 SWEEP BOARD 1[...]

9 - 176 2715 Spectrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 177 2715 VID EO TRIGGE R A5 SWEEP BOARD 2[...]

9 - 178 2715 Spectrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 179 2715 A5 SER IAL CON TROL R EGISTER SWEEP BOARD 3[...]

9 - 180 2715 Spectrum Analyze r S e rvice Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 181 2715 SW EEP RAM P GENE RA TO R SWEEP BOARD A5 4[...]

9 - 182 2715 Spectrum Analyze r Service Manua l A B 12 3 4 A B D C Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number Q130 C130 C262[...]

9 - 183 2715 Spectrum Analyze r Service Manua l B C D 12 3 4 A B D C Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number J9 J8 J7 J10[...]

9 - 184 2715 Spectrum Analyze r Service Manua l A B D 12 3 4 A B D C Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix — se e end of Replaceable Electrical Parts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number CR530 C CR53[...]

9 - 185 2715 Spectrum Analyze r Service Manua l B C D 12 3 4 A B D C Component Number A23 A2 R1234 Ch assis-m oun ted co mpo nen ts hav e n o Assem bly Nu mb er prefix — se e end of Re placeable Electrical P arts List. COMPONE NT NUMBE R EXAM PLE Assembl y Number Subass embly Number (if us ed) STAT IC SENSIT IVE DEVICES Cir cuit Number U930 CR731[...]

9 - 186 2715 Spectrum Analyze r Service Manua l J2 C1 3B1 J2 C1 4C6 J2 C1 4D6 J2 C1 5A4 J3 C2 7A1 J4 C1 7B1 J4 C1 7C1 J5 C1 7C1 J5 C1 7D1 J6 C2 7C4 J6 C2 7C4 J6 C2 7C4 J6 C2 7D4 J6 C2 7D4 J6 C2 7D4 J7 B2 7A 6 J7 B2 7A 6 J7 B2 7B 6 J7 B2 7B 6 J8 B2 7C6 J8 B2 7C6 J8 B2 7C6 J8 B2 7D6 J8 B2 7D6 J9 B2 8A 1 J9 B2 8A 1 J9 B2 8B 1 J10 B3 8D1 J10 B3 8D1 J1 [...]

9 - 187 2715 Spectrum Analyze r Service Manua l 2715 settings are: 100 MHz Center Frequency 2 MHz span 5 dB/div INPUT ME NU 1 (cal signal on) DSPL M ENU 4 (peak mode) Readouts of f D waveform on Intensit y on Adjust signal t o top of screen with ref level and ref level fine. TP924 Schemat ic location: 3B4 DSHOR Schemat ic location: 4B1 TP418 Schema[...]

9 - 188 2715 Spectrum Analyze r Service Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 189 0 SI GNAL I NTE RCONNECT POWER SUPPL Y BOARD A15A1[...]

9 - 190 2715 Spectrum Analyze r Service Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 191 2715[...]

9 - 192 2715 Spectrum Analyze r Service Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 193 2715[...]

9 - 194 2715 Spectrum Analyze r Service Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 195 2715[...]

9 - 196 2715 Spectrum Analyze r Service Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 197 2715[...]

9 - 198 2715 Spectrum Analyze r Service Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 199 2715[...]

9 - 200 2715 Spectrum Analyze r Service Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 201 2715[...]

9 - 202 2715 Spectrum Analyze r Service Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 203 2715[...]

9 - 204 2715 Spectrum Analyze r Service Manua l[...]

2715 Spectrum Analyze r Service Manua l 9 - 205 2715[...]

9 - 206 2715 Spectrum Analyze r Service Manua l[...]