Tektronix OA 5000 manuale d’uso

Us er M anual OA 5000 Se r ie s Optical Attenua tors 070-7612-06 www .tektr oni x.com[...]

Copyright © T ekt ronix, Inc . All right s reserved. T ektroni x product s are c overe d by U.S. and forei gn pat ent s, issued and pe nding. Inform at ion i n this publi ca ti on superce des that in al l pre viously publ ished ma te ria l. Specifi cat ions and pri ce change privil eges reserve d. T ektroni x, Inc. , P .O. Box 500, Beave rton, OR [...]

W ARRANTY T ektroni x warra nts t hat the products tha t i t manufac ture s and s ell s will be fre e from defec ts i n m ate ria ls a nd workmanship for a pe riod of one (1) year from the da te of shipment . If a product prove s defect ive during thi s warranty peri od, T ekt ronix, a t it s opti on, eit her will re pai r the defe cti ve product w[...]

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EC Dec laration of Conformity We T ektr onix UK Ltd. The Arena Downshire W ay Brackne ll, R G12 1PU decla re under sole responsibility that the OA5000 Series Optic al Attenuators OA5002, OA5012, OA5022, and OA5032 Includin g the OCP5502 Power Module meet the intent of Dire ctive 89/336/EEC for Electr o magne tic Compatibility and Low V olta ge Dire[...]

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OA 5000 Series User Manual i We l c o m e Congratulati ons on your purchase o f an OA 5000 Series Opti cal Attenuato r . The OA 5000 Series O ptical Attenuators are high-perfo rmance instruments used to attenuate opti cal signals. The OA 5000 Series co nsists of four instru- ments, the OA 5002, OA 5012, OA 5022, and OA 5032. The major difference be[...]

Welcome ii[...]

OA 5000 Series User Manual iii Contents Wel co m e i ................................................... Con ten ts iii ................................................... Li st of Figu res vi i .............................................. Li st of T ables vi ii ............................................... Safety ix ...........................[...]

Welcome iv Progra m mi n g Settin g Up the In str ume nt 3 -1 ................................... Controllers 3 -1 ............................................. Using the GPIB Interface 3-1 ................................. Command Syntax 3-5 ........................................... Clearing the OA 5000 3-5 .................................... C[...]

OA 5000 Series User Manual v Status and Event s 3-35 .......................................... Registers 3-35 ............................................... Queues 3-39 ................................................. Event Handling Sequence 3-39 ................................ Conflicts 3-40 ................................................ Mes[...]

Welcome vi Index Index I-1 ......................................................[...]

OA 5000 Series User Manual vii List of Figures Figur e 1 -1: Ins ta lling t he OA 5000 into the P ower Module 1-2 ......... Figure 1-2: OA 5002 F ront P anel 1-4 .............................. Figure 2-1: OA 5002 F ront P anel 2-2 .............................. Figure 2-2: The Locati on of the DISABLE Button 2-3 ................ Figure 2-3: Setting[...]

Welcome viii List of T ables T able 3 -1: BNF Sy mbol s and Meanings 3-5 ........................ T able 3 -2: Command Message Elements 3-6 ...................... T able 3 -3: Compariso n of H eader On and O ff Responses 3-7 ......... T able 3 -4: Commands Commo n to Al l GP IB Devices and Supported by the O A 5000 Series 3-13 .....................[...]

OA 5000 Series User Manual ix Safety Y ou might be eager to begin using y our O A 5000, but please take a moment to review these safety precauti ons. They are provided for y our pro tectio n and to prevent damage to the O ptical Attenuator . This safety info rmatio n applies to all o perators and servi ce personnel . These two terms appear in manua[...]

Safety x Observe all of these precautio ns to ensure y our perso nal safety and to prevent damage to either the O A 5000 or equipment connected to i t. Opt i c al Ou tp ut WARN I N G T o preven t da ma g e to your eyes , avo i d l oo ki ng i nto t he opt i cal out pu t p or t w hi l e ther e i s a n o pti ca l s i g na l co nnect ed t o t he i npu [...]

OA 5000 Series User Manual xi Do No t Oper ate in Ex plos ive Atm osph eres The OA 5000 provi des no explosio n protection fro m static di scharges or arcing compo nents. D o not o perate the OA 5000 i n an atmosphere of expl o - sive gasses.[...]

Safety xii[...]

A Quick T our[...]

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OA 5000 Series User Manual 1 --- 1 Installation The OA 5000 Opti cal Attenuator is designed to operate in a T ektronix TM 5000 Series P ower Module or the ri ght -hand slo t of a T ektronix OCP 5502. T o ensure safe operation, follo w all precautions li sted in the Pow e r M o d u l e ’ s Operator Manual . D o not attempt to operate the OA 5000 w[...]

Installation A Quick T our 1 --- 2 Release Lever OA 5000 TM 5000 Seri es Po wer Module Figure 1-1: Install ing the OA 5000 i nto th e P ower Mo dule If you wil l be pro gramming the O A 5000 over the GP IB, perform the fol lo wing additio nal step: Step 3: Attach the GPIB cabl e from y our instrument co ntroller to the GPIB connecto r located on th[...]

OA 5000 Series User Manual 1 --- 3 A Quick T our This sectio n provides a brief overvi ew of the OA 5000 O ptical Attenuator . The over vie w illu st rat es h ow e asy it is to l earn about and use the OA 5000. Y ou can read this secti on o r yo u can choo se to i nvestigate the O A 5000 on your own. If you decide not to read the overview , refer t[...]

A Quick T our A Quick T our 1 --- 4 DISABLE MIN A T T STORE 1 RECALL 1 STORE 2 RECALL 2 REMOTE MODE SET REF COARSE FIN E WAV E- LENG TH ADDR (SET) Figure 1-2: OA 5002 Front P a nel Use the store and recall buttons to save o ne or two attenuato r settings fo r use at a later time. Step 7: Using the COARS E knob, set the attenuation to 10.00 dB. Step[...]

A Quick T our OA 5000 Series User Manual 1 --- 5 Check the A T TENUA TION readout and veri fy that i t is set to 10.00 dB. Step 12: Press RECALL 2 . Check the A T TENUA TION readout and veri fy that i t is set to 21.50 dB. The SET REF butto n allows you to set a reference value for the attenuati on. Y ou can then measure attenuatio n relative to th[...]

A Quick T our A Quick T our 1 --- 6 Step 21: Recall the second stored setting by pressing RECALL 2 . Note that the attenuati on readout is now 29.50 dB. Remember that you set STORE 2 to 21.50 dB. The display shows the value: 21.50 - - - ( - - - 8. 00)= 29.50 dB. Step 22: Push the MO DE button so that j ust the AT T in dica tor is lit , a nd then pu[...]

User Reference[...]

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OA 5000 Series User Manual 2 --- 1 Oper ator Overview The User Reference section i s arranged as an alphabetic list o f t opi cs. Each topic co vers one aspect of the operatio n of the OA 5000. Five topi cs follow this operato r overview: H Enabling/Disabli ng Attenuation H Setting Attenuatio n Levels H Setting the GPIB Address H Setting the Refere[...]

Operator Overview User Reference 2 --- 2 DISABLE MIN A T T STORE 1 RECALL 1 STORE 2 RECALL 2 REMOTE MODE SET REF COARSE FIN E W A V E --- LENG TH ADDR (SET) Use these kno bs to adjust the at tenuation level, the reference level, the wavelength setting, and the GPIB address. When this but ton is lit, t he knobs are u se d to adju st the wavelength s[...]

OA 5000 Series User Manual 2 --- 3 Enab ling/Disabling Attenuation On the OA 5000, the DI SABL E button (Figure 2-2) al lows you to enabl e or disable the o ptical path through the attenuator with a shutter . Y ou can stil l set the attenuation l evel, however , since i t is not dependent o n the optical signal passi ng through the attenuator . Fo [...]

Enabling/ Disabling Attenuation User Reference 2 --- 4[...]

OA 5000 Series User Manual 2 --- 5 Setting Attenuation Levels Because the OA 5000 automati cally adjusts the attenuator to co rrect for different wavelengths, i t is impo rtant, for attenuator accuracy , to co rrectly match the display ed w avelength with the wavelength of the si gnal go ing i nto the unit. Setting attenuatio n levels on the O A 50[...]

Setting Attenuation Levels User Reference 2 --- 6 Step 2: Use the two knobs to adjust the displ ayed wavelength val ue. The COAR SE k nob changes the displ ayed val ue by 10 nm per cl ick and the FINE knob changes the display ed value by 1 nm per cli ck. The wavelength can be adjusted from 600 to 1700 nm. Step 3: When the desired wavelength i s dis[...]

Setting Attenuation Levels OA 5000 Series User Manual 2 --- 7 T o set the attenuation level to minimum, press the MIN A TT button. Setting the attenuatio n to minimum sets the absol ute attenuatio n to 0 dB. This means that the OA 5000 i s not attenuating the opti cal i nput. However , the attenuation di splay may not read 0 dB. As noted abo ve, if[...]

Setting Attenuation Levels User Reference 2 --- 8[...]

OA 5000 Series User Manual 2 --- 9 Setting the GPIB Address Setting the GPIB address i s accomplished using the A DDR (SET) button and the LEVEL AD JU ST k nobs (Fi gure 2-4). DISABLE MIN A T T STORE 1 RECALL 1 STORE 2 RECALL 2 REMOTE MODE SET REF COARSE FIN E W A V E --- LENGTH ADDR (SET) T urning either kno b changes the GPIB address (when t he A[...]

Setting the GP IB Address User Reference 2 --- 1 0 NOTE Valid GPIB address es ar e 0 throug h 30. If the GPIB addr ess is inc rease d past 30 , the d isplay will sho w the w ord “OFF .” If OFF is entered as the address, the OA 5000 wi ll not be address able over the GPIB and it will not par ticipate in any GPIB tr ansactions .[...]

OA 5000 Series User Manual 2 --- 1 1 Setting the Ref erence Level Y ou can set the displ ay o f the OA 5000 to reflect the attenuatio n of the system rather than just the attenuation pro vided by the OA 5000. F or exam- ple, if yo ur system insertion l oss is 1.55 dB, you coul d set the reference value to - - - 1. 55 dB and the attenuation di splay[...]

Setting the Reference Level User Reference 2 --- 1 2 The reference mode has two primary applicati ons: 1. Reading total attenuation (i nsertio n lo ss) 2. Approximati n g signal power The total attenuati on of any attenuato r is the sum o f the attenuatio n caused by the connecti ons (the insertion l oss) and the attenuation caused by the active el[...]

Setting the Reference Level OA 5000 Series User Manual 2 --- 1 3 The second appli cation for reference mode i s approximating signal power after the source has been attenuated. Step 1: Set the attenuator to its minimum reference l evel. Step 2: Measure the power (in dBm) fro m the fiber co nnected to the output optical co nnector . Step 3: Set the [...]

Setting the Reference Level User Reference 2 --- 1 4[...]

OA 5000 Series User Manual 2 --- 1 5 Storing and R ecalling Attenuation Levels The OA 5000 can store two attenuati on levels for l ater recall. This can help save you ti me and minimize mistakes. Refer to Fi gure 2-6. DISABLE MIN A T T STORE 1 RECALL 1 STORE 2 RECALL 2 These buttons st ore and reca ll attenuat ion setti ng s. Figure 2-6: The Locati[...]

Storing and Rec a lling Attenuatio n Levels User Reference 2 --- 1 6[...]

Programming[...]

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OA 5000 Series User Manual 3 --- 1 Setting Up the Instrument This sectio n tells you ho w to prepare the OA 5000 O ptical Attenuator for use with a remote contro ller or computer . The first part of this sectio n explains how to connect the O A 5000 to a controll er or computer through the GPI B interface. The rest of the sectio n describes how to [...]

Setting Up the Instrument Pr og ra mming 3 --- 2 GPIB Connecto r Figure 3-1: GPIB Connector Loca tion GP IB Requirem ents Observe these rules when using y our O A 5000 with a GPIB network: H Each device on the bus must be assi gned a unique devi ce address; no two devices can share the same device address. H Do not connect mo re than 15 devices to [...]

Setting Up the Instrument OA 5000 Series User Manual 3 --- 3 Setting the GPI B Address Once yo u have connected the OA 5000 through the GPIB i nterface, you need to set its GPIB address to allow it to communicate through the inter- face. T o set the GPIB address: Step 1: Press the A DDR (SE T) button so that it i s lighted. The AT T E N - UA TION d[...]

Setting Up the Instrument Pr og ra mming 3 --- 4[...]

OA 5000 Series User Manual 3 --- 5 Co mmand Syntax Y ou can contro l the OA 5000 through the GPIB usi ng a large gro up of co m- mands and queries. This sectio n describes the syntax these commands and queries use and the conventi ons the OA 5000 uses to process them. The commands and queries themsel ves are listed in the sectio n entitled Com- man[...]

Com man d Syntax Pr og ra mming 3 --- 6 Commands consi st of set commands and query commands (usual ly simply called co mmands and queries). Commands modify i nstrument settings or tell the O A 5000 to take a specific action. Queri es cause the OA 5000 to return informati on about its status. Most commands have bo th a set form and a query form. Th[...]

Com man d Syntax OA 5000 Series User Manual 3 --- 7 Commands Commands cause the OA 5000 to perform a specifi c functio n or change o ne of its setti ngs. Commands have the structure: H [:]<Header>[<Space><Argument>[<Separator><Argu- ment>]...] Que ri e s Queries cause the O A 5000 to return informatio n about its statu[...]

Com man d Syntax Pr og ra mming 3 --- 8 H Enter commands in upper o r lower case. H Precede any co mmand w ith blank characters. Blank characters include any combi nation of the ASCII contro l characters 00 through 09 and 0B through 20 hexadecimal (0 through 9 and 11 through 32 deci mal). H The OA 5000 igno res commands consisting o f any combinati[...]

Com man d Syntax OA 5000 Series User Manual 3 --- 9 is a vali d message that sets the attenuation to 15 dB, the displ ay mo de to dB, and responds with the disabl e status and the adj usting status. Concatenated commands and queri es are executed in the order re- ceived. Here are some i nvalid concatenatio ns: H DISPLAY DBR;ATT:DBR 5 no colo n befo[...]

Com man d Syntax Pr og ra mming 3 --- 1 0 The argument of a command may be in one o f several fo rms. The indivi dual descriptio ns of each command tell which argument ty pes to use with that command. Block Arguments One OA 5000 co mmand ut iliz es a b lock arg um en t form : Symbol Me aning <Block> A block of data by tes, defined below <N[...]

Com man d Syntax OA 5000 Series User Manual 3 --- 1 1 Symbol Me aning <NR1> Signed integer val ue <NR2> Flo ating point value witho ut an exponent <NR3> Flo ating point value with an expo nent <NRf> Flexi ble numeric argument {NR1|NR2|NR3} . A suffix com- posed of a mul tiplier (letter expo nent) and units may be used as an [...]

Com man d Syntax Pr og ra mming 3 --- 1 2[...]

OA 5000 Series User Manual 3 --- 1 3 Co mmands OA 5000 commands fall into two main groups: Commo n Commands and Device Commands. The commands fo llo w T ektronix Standard Codes and F ormats 1991. Most of these co mmands can be used either as set commands or queries. However , some commands can onl y be used to set: these have the words “ No Q uer[...]

Comma nd s Pr og ra mming 3 --- 1 4 T a bl e 3 -4: C ommands Commo n to All G PIB D evices and Suppor ted by th e OA 5000 Series (Cont.) Header Full Command Name FACTory Set to Facto ry D efaults HEADer Header *IDN? Identificati on *LRN? Learn Device Setup *OPC Operatio n Complete *PSC P ower-O n Status Clear *RST Reset *SRE Service Request Enable [...]

Com man ds OA 5000 Series User Manual 3 --- 1 5 T a bl e 3 -5: OA 5000 Devi ce Commands and Parameters (Cont.) Header Full Command Name REFerence Reference STORe1|2 Store Attenuatio n WAVelength Wavel ength ADJusting? (Query Only) The ADJusting? query returns the status of the attenuato r . A 1 is returned if the attenuator is mo ving to some atten[...]

Comma nd s Pr og ra mming 3 --- 1 6 <QString>::= <Message>;[<Command>] <Command> is the command that caused the erro r and may be returned when a command error is detected by the OA 5000. As much of the com- mand will be returned as po ssible without exceeding the 60 character l imi t of the <Message> and <Command&g[...]

Com man ds OA 5000 Series User Manual 3 --- 1 7 ATTen:DB? ATTen:DBR? ATTen:DB <NRf> ATTen:DBR <NRf> ATTen:MIN ATTen:MIN? ATTen? ATTen : DBR <space> ? MIN DB DBR DB ? <NRf> MIN ? If you make a query witho ut an argument (for exampl e, A T T en?), the re - sponse is the same as that fo r an ATT en:DB?; DBR? query . ATT:DB? ret[...]

Comma nd s Pr og ra mming 3 --- 1 8 BLRN? ? BLRN <Space> <Block> BLRN? might return the response: BLRN #222 <22 bytes of binary data> *CAL? (Query Only) This command perfo rms no function in the O A 5000. It is included for c om- pliance with IEEE Std 488.2. N/A *CAL? *CAL ? *CAL? would return ” 0 ” . *CL S (N o Qu e ry Form )[...]

Com man ds OA 5000 Series User Manual 3 --- 1 9 The *CLS command cl ears H the Event Queue, H the Standard Event Status Register (SESR), and H the Status Byte Register (except the MA V bit; see belo w ). If the *CLS command i mmediately fol lo ws an <EOI> , the Output Queue and MAV bit (Status By te Register bit 4) are also cl eared. MAV indi[...]

Comma nd s Pr og ra mming 3 --- 2 0 DESE 209 sets the DESER to binary 11010001, w hich enabl es the P ON, URQ , EXE , and OPC bi ts. DESE? might return the string :DESE 186 , showing that the DESER contai ns the binary val ue 10111010. DISabl e T o query or set the status of the l ight shutter , use the DISable term. A DIS - able argument of 1, or [...]

Com man ds OA 5000 Series User Manual 3 --- 2 1 DISPlay {DB|DBR|SETRef|SETWavelength} DISPlay? DBR SETRef <space> ? SETWavelength DB DISPlay DISP? returns the string :DISP DB DISP:SETRef Sets the front panel to the Set Reference mode (has the same effect as pressing the SET REF butto n on the front panel). *ESE The *ESE (Event Status Enable) [...]

Comma nd s Pr og ra mming 3 --- 2 2 NOTE Setting the DESE R and the ESER to the same value al lows onl y those codes to be entered into the Event Queue and summa rized on the ESB bi t (bi t 5) of the Status Byte Register . Use the DESE comm an d to s et t he DES E R. A compl et e di scu s s io n of even t han dl - i n g i s o n p a g e 3 --- 3 5 . [...]

Com man ds OA 5000 Series User Manual 3 --- 2 3 EVEnt ? EVEnt? might return the response :EVENT 110 , showing that there was an error in a co mmand header . EVMSG? (Query Only) The EVMSG? query removes from the Event Q ueue a singl e event code associated with the resul ts of the last *ESR? read and returns the event code alo ng w ith an explanato [...]

Comma nd s Pr og ra mming 3 --- 2 4 F ACTORY (No Query For m) The F ACTORY co mmand resets the OA 5000 to its factory default settings and purges stored settings. NOTE The F ACTORY command can take 5 to 10 seconds to complete depending on attenuation settings . DESE , *ESE , HEADER, *PSC, *RST , *SRE , V ERB OSE. FACTORY FACTORY The F ACTORY co mma[...]

Com man ds OA 5000 Series User Manual 3 --- 2 5 T a bl e 3 -6: F ACTORY Front P anel Setti ngs ( Cont.) Front P a nel Parameter Setti ng DISABLE OFF WAVELENGTH 1300 The F ACTORY co mmand does not alter the fol lowing items: H The state of the GPIB (IEEE Std 488.2) interfaces. H The selected GPIB address. H Calibrati on data that affects device spec[...]

Comma nd s Pr og ra mming 3 --- 2 6 HEADER? might return the value 1 , showing that the Respo nse Header Enabl e State is TRUE. *IDN? (Query Only) The *IDN? (Identificati on) query returns the OA 5000 ’ s unique i dentifi catio n code. N/A *IDN? *IDN ? The query response i s an ASCII string separated into four fi elds by commas: TEKTRONIX,OA5002,[...]

Com man ds OA 5000 Series User Manual 3 --- 2 7 NOTE The * LRN ? qu ery a lway s retu rns a string with c omm and he ade rs, regardl ess of the setting of the HEADER command. This i s because t h er e t u r n e ds t r i n g i s i n t e n d e dt ob ea b l et ob es e n t b a c kt o t h e OA 5000 as a command stri ng. T he VERBOSE command can stil l b[...]

Comma nd s Pr og ra mming 3 --- 2 8 DESE , *ESE , *RST , *SRE . *PSC <NRf> *PSC? <Space> ? *PSC <NRf> <NRf> is a value i n the range from - - - 32767 to 32767. <NRf> = 0 sets the power- on status clear fl ag to F ALSE, and disables the power- on clear and all ows the OA 5000 to assert SRQ after po wer- on. <NRf> [...]

Com man ds OA 5000 Series User Manual 3 --- 2 9 REFere n ce This command reads and sets the reference used when displ aying the attenuation i n the ATT - - - REF mode. The units for co mmand mode and responses is dB. V alues smaller than 0.01 dB are rounded to the nearest one-hundredth dB. The REF value may not exceed ±99.99. The combina- tion o f[...]

Comma nd s Pr og ra mming 3 --- 3 0 *RST does the fol lowing: H Puts the OA 5000 i nto the Operation Co mplete Command Idle State. H Puts the OA 5000 i nto the Operation Co mplete Query Idle State. H Returns the instrument settings to those li sted on page 3 - - - 24. The *RST command does no t alter the follo w ing: H The state of the IEEE Std 488[...]

Com man ds OA 5000 Series User Manual 3 --- 3 1 *SRE 48 sets the bits in the SRER to 00110000 binary . *SRE? might return a value o f 32, showing that the bits in the SRER have the binary value 00100000. *STB? (Query Only) The *STB? (Read Status Byte) query returns the Status By te Register (SBR) using the Master Summary Status (MSS) bit. F or a co[...]

Comma nd s Pr og ra mming 3 --- 3 2 <NRf> specifies the attenuati on value to be stored. The range for the attenu- ation val ue is 0 ≤ <NRf> ≤ 60. 00. All attenuati on values asso ciated with the STORe command and query forms are in abso lute dB and never i nclude the REFERENCE val ue, even if the front panel displ ay sho ws that th[...]

Com man ds OA 5000 Series User Manual 3 --- 3 3 NOTE If a n error is d ete cte d, *TST? st ops an d re turns an erro r c od e and doe s not c omp lete a ny re ma inin g test s. It also p lac es a de v ice depen den t event i n t he event queu e. *TST? might return the value 115 , indi cating that the sy stem timer i s not work- ing correctl y . VER[...]

Comma nd s Pr og ra mming 3 --- 3 4 *WAI (N o Que ry Form) The *WAI (W ait) command prevents the OA 5000 fro m executing further commands or queri es until all pendi ng operations fini sh. *OPC, ADJusting?. *WAI *WAI WAV el e n gth This commands set o r queries the wavelength used by the instrument when determining the equi valent attenuator positi[...]

OA 5000 Series User Manual 3 --- 3 5 Status and Events The OA 5000 provi des a status and event reporting system for the GP IB interfaces. This system i nforms you of certai n significant events that o ccur within the OA 5000. The OA 5000 status handli ng system consists of fi ve 8 -bit regi sters and two queues. This section descri bes these regis[...]

Status and Events Pr og ra mming 3 --- 3 6 T able 3 - 8: S E SR Bi t F unct ions Bit F unction 7 (MSB) PON (P ower On). Shows that the OA 5000 was powered on. 6 URQ (User Request). Shows that the Remote button was pressed. 5 CME (Command Error). Shows that an error occurred while the OA 5000 was parsing a command o r query . Command error messages [...]

Status and Events OA 5000 Series User Manual 3 --- 3 7 T able 3 - 9: S BR Bit F unc t i ons Bit F unction 7 (MSB) Not used (al ways 0). 6 RQS (Request Service ), obtained fro m a serial pol l. Shows that the OA 5000 requests service fro m the GPIB controll er . 6 MSS (Master Status Summary), obtained from *STB? query . Summarizes the ESB and MA V b[...]

Status and Events Pr og ra mming 3 --- 3 8 The Event Status Enable Regi ster (ES ER) — i ss h o w ni nF i g u r e3 - 9 . I t control s w hich types o f events are summarized by the Event Status Bit (ESB) in the SBR. Use the *ESE command to set the bi ts in the ESER, and use the *ESE? query to read it. PON U RQ CM E EXE DD E QYE RQC OPC 76543210 F[...]

Status and Events OA 5000 Series User Manual 3 --- 3 9 The OA 5000 status and event repor ting system co ntains two queues: the Output Queue and the Event Q ueue. The Output Que ue The Output Queue sto res up to 8000 bytes of a query respo nse while i t is waiting to be o utput. The Output Queue is emptied each ti me a new com- mand or query messag[...]

Status and Events Pr og ra mming 3 --- 4 0 Device Event Sta tus Enable Register (DESER) Standar d Event S tat us Register (SESR) Event Status Enable Register (ESER) Status Byt e Register (SBR) Service Request Enable Regist er (SRER) Event Queue Output Queue Event Event Event Byte Byte Byte 1 2 3 4 6 7 5 PON U RQ CM E EXE DD E QYE RQC OPC 76543210 P[...]

Status and Events OA 5000 Series User Manual 3 --- 4 1 T ables 3 -10 thro ugh 3-15 li st all the programming interface messages the OA 5000 generates in respo nse to commands and queries. F or most messages, a secondary message from the O A 5000 gives mo re detail abo ut the cause of the error or the meaning o f the message. This message is part of[...]

Status and Events Pr og ra mming 3 --- 4 2 T a bl e 3 -11: C ommand Error M essag es — CM E B it 5 ( Co nt. ) Code Messa ge 113 Undefined header 118 Query not all owed 120 Numeric data erro r 121 Invalid character i n number 123 Numeric o verflow 124 T oo man y dig its 128 Numeric data no t allowed 130 Suffix error 131 Invalid suffi x 134 Suffix [...]

Status and Events OA 5000 Series User Manual 3 --- 4 3 T a bl e 3 -12: E xecution Error Messag es — EXE B it 4 ( Co nt. ) Code Messa ge 222 Data out of range 223 To o m u c h d a t a T able 3 -13 l ists the devi ce errors that can o ccur during operati on of the OA 5000. These errors may i ndicate that the OA 5000 needs repair . T a bl e 3 -13: D[...]

Status and Events Pr og ra mming 3 --- 4 4[...]

Appendices[...]

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OA 5000 Series User Manual A --- 1 App endix A : Accessories Some accessori es are included with the OA 5000. If you wish to purchase optio nal accessories, or purchase additional standard accessori es, see a T ek tronix pro ducts catalo g or co ntact your l ocal T ek tronix fi eld representa- tive. H This manual, the OA 5000 Optical Attenuator Use[...]

Appendix A: Accesso ries Appe ndic es A --- 2[...]

OA 5000 Series User Manual A --- 3 App endix B : Specifi cations The performance characteristi cs described in this appendix (T ables A-1 through A-3) are vali d under the following co nditions: H The instrument must have been cali brated at an ambient temperature between +20 _ C and +30 _ C. H The instrument must have had a warm - up perio d of at[...]

Appendix B: S pecifications Appe ndic es A --- 4 T able A - 1: Opt i cal C h aract eri sti cs (Con t .) Char a cte ris tic Sp ec if ica tio n Lineari ty ± 0. 1 dB max (typical ly ± 0.05 dB) Accuracy OA 5002 1310 ± 20 nm 1550 ± 20 nm All other wavelengths ≤ ±0 . 1 5d B( t y p i c a l l y ≤ ±0 . 0 5d B ) ≤ ±0 . 1 5d B( 0t o4 0d B )( t y [...]

Appendix B: S pecifications OA 5000 Series User Manual A --- 5 T a bl e A -3: E nvi ronmental Performa nce (co nt.) Char a cte ris tic Sp ec if ica tio n Humid ity Operating and Nono perating 95% RH: 11 _ Ct o3 0 _ C (52 _ Ft o8 6 _ F) 75% RH: 11 _ Ct o4 0 _ C (52 _ Ft o1 0 4 _ F) 45% RH: 11 _ Ct o5 0 _ C (52 _ Ft o1 2 2 _ F) (Exceeds MIL - - - T -[...]

Appendix B: S pecifications Appe ndic es A --- 6[...]

OA 5000 Series User Manual A --- 7 App endix C: Interf ace Specifi cations This appendix descri bes details of the remote i nterface of the O ptical Attenuator , that is, the GPIB. Normal ly , you will not need thi s i nformati on to use the OA 5000, but the informati on is useful when connecting to control- lers of unusual configurati on. This app[...]

App e nd ix C : Int er fa ce S p eci fi cat ions Appe ndic es A --- 8 T able A -5 sho ws the character set used for all messages to and from the OA 5000. This is i dentical to standard ASCII. T ab l e A -5: T he AS CII Cha ra c ter Se t 01234567 0 NUL 0 DLE 16 space 32 0 48 @ 64 P 80 ‘ 96 p 112 1 SOH 1 DC1 17 ! 33 1 49 A 65 Q 81 a 97 q 113 2 STX [...]

App e nd ix C : Int er fa ce S p eci fi cat ions OA 5000 Series User Manual A --- 9 The OA 5000 supports many GPIB functio n subsets, as listed bel ow . Some of the li stings describe subsets that the OA 5000 does no t support. H SH1 (Source H andshak e). The OA 5000 can transmit multi- line mes- sages across the GPIB. H AH1 (Acceptor H andshak e).[...]

App e nd ix C : Int er fa ce S p eci fi cat ions Appe ndic es A --- 1 0[...]

OA 5000 Series User Manual A --- 1 1 App endix D: U sing the *OPC Query/C ommand When you are usi ng the OA 5000 in an automated test envi ronment, it i s important that y ou be aw are of the fi nite times fo r certain OA 5000 com- mands to compl ete. For exampl e: suppose yo u develop an auto mated test in which the attenuator i s adj usted over t[...]

Appendix D: Using the * OPC Query/ Command Appe ndic es A --- 1 2 Y ou can also have the OA 5000 set the OP C bit o f the SESR by using the command form o f *OPC instead of the query form. By setting the O PC bi t to “ 1 ” via an *O PC command, an SRQ will be generated assumi ng the user has enabled the proper regi ster bits. H Advanced program[...]

OA 5000 Series User Manual A --- 1 3 Appe n d ix E: P acki n g fo r S hipm e n t If you shi p the OA 5000, pack it in the ori ginal shi pping carton and packing material. If the ori ginal packing material i s not avail able, pack age the instru- ment as foll ows: Step 1: Obtai n a corrugated cardbo ard shippi ng carton with insi de dimensio ns at l[...]

Appe ndix E: P ack ing for Sh ipm ent Appe ndic es A --- 1 4[...]

OA 5000 Series User Manual A --- 1 5 App endix F: Maintenance This appendix descri bes how to perform routine mai ntenance on the OA 5000 Series O ptical Attenuators. There are no user -serviceable parts i n the OA 5000. Should y our instrument need service, contact yo ur nearest T ek tronix servi ce representative. The foll owing maintenance proce[...]

Appendix F: Maintenance Appe ndic es A --- 1 6 NOTE T o keep cleaning to a mini mum, i nstal l the dust cove r when no fiber is con nect ed to t he op ti ca l p or t . Securing Screw Optical Fiber C onnector Figure A-1: Removing the Opti cal B ulkhead Connector[...]

Appendix F: Maintenance OA 5000 Series User Manual A --- 1 7 The OA 5000 is shi pped w ith the FC co nnector bul khead and dust cover install ed. If you wish to change to the ST , D IN 47256, or SC connecto rs, perform the fol lowing procedure. 1. T urn the power supply off fi rst and then pull the OA 5000 out o f the power module. 2. U se a Ph ill[...]

Appendix F: Maintenance Appe ndic es A --- 1 8 Figure A-3: ST Optical B ulkhead Assembl y Figure A-4: DIN 47256 Op tical Bul khead Assembly[...]

Appendix F: Maintenance OA 5000 Series User Manual A --- 1 9 Figure A -5: SC Optical B ulkhead Assembl y 5. Replace the current bulkhead with the one y ou wish to use and re -as- semble. 6. Installati on is the reverse of steps 1 through 3.[...]

Appendix F: Maintenance Appe ndic es A --- 2 0[...]

OA 5000 Series User Manual A --- 2 1 App endix G: P roduct V erification Refer to T able 4-1 for a li st of the equipment required to veri fy the perfo r- mance of yo ur OA 5000 Series instrument. T a bl e 4 -1: E quipment Required for Performa nce V erification Description M inimu m Us e Sp ec if ica tio ns Recommendation 850 nm Laser source CW , [...]

Appendix G: P roduct V erification Appe ndic es A --- 2 2 T a bl e 4 -1: E quipment Required for Performa nce V erification Description Recommendation Min imu m Us e Sp ec if ica tio ns OA 5022, Optical i nput and output fiber 1 to 5 m lo n g, 62.5/ 125  m, FC/PC to FC/PC 2 Te k t r o n i x 174-2322-00 OA 5032, Optical i nput and output fiber 1 [...]

Appendix G: P roduct V erification OA 5000 Series User Manual A --- 2 3 Step 1: Push the MO DE button unti l A TT is backlit and -REF i s not backlit (these LEDs are green); H The MODE button i tself should now be backlit (thi s LED is red). Step 2: Push the MI N A TT button; thi s will cause the i nstrument to adjust to zero dB (a few seconds may [...]

Appendix G: P roduct V erification Appe ndic es A --- 2 4 H Set the WA VELENGTH (nm) display to read “ 1300 ” . H Push the WAVELE N GT H button once more; check that the button is no lo nger back lit and that the MO DE button i s backlit. (After exiting the wavelength mode, the instrument may requi re a second o r two to recalcul ate calibratio[...]

Appendix G: P roduct V erification OA 5000 Series User Manual A --- 2 5 Step 6: Enter the W avelength set mo de for the O A 5000 by pushing the WAVEL EN G T H button so that the top display reads “ SEt ” . Step 7: Using the knobs, adjust the wavelength to read 1600 nm. Step 8: Exit the W avelength Set mode by pushi ng the WAVEL EN G T H button [...]

Appendix G: P roduct V erification Appe ndic es A --- 2 6 Step 6: Set the laser to CW (unmodulated) mode, and set the laser power level (i f adj ustable) to maxi mum, but not more than 2 mW . T urn on the laser . The power meter reading should be at least 500  W. Step 7: Set the power meter to dB rel ative (press the dB key), and set the dB refe[...]

Appendix G: P roduct V erification OA 5000 Series User Manual A --- 2 7 Step 5: Set the OA 5000 attenuati on to 0 dB, and the DISABL E button off (u nlit ). Step 6: The power meter reading i s the insertio n loss of the OA 5000. Check that the power meter reading is - - - 2.0 dB or higher (more po si- tive). NOTE Durin g the rem ain ing st e ps, d [...]

Appendix G: P roduct V erification Appe ndic es A --- 2 8 Step 1: Disconnect the fi bers from the O A 5000 and 1310 nm laser . Connect the 1550 nm laser to the input fiber and the l ong wavelength sensor to the o utput fiber . Connect the fibers together using an F C/FC adapter . Set the laser to CW (unmodulated) mode, and set the laser power level[...]

Appendix G: P roduct V erification OA 5000 Series User Manual A --- 2 9 T a bl e 4 -3: At tenuati on Accuracy a t 1550 nm OA 5002 OA 5012 / OA 5022 / OA 5032 Atten ua tio n settin g ( dB ) T o le ra n ce Limits ( d B ) T o le ra n ce Limits ( d B ) 10 - - - 10.15 to - - - 9.85 - - - 10.20 to - - - 9.80 20 - - - 20.15 to - - - 19.85 - - - 20.20 to -[...]

Appendix G: P roduct V erification Appe ndic es A --- 3 0 Step 7: Set the dB reference ( Disp - - >Ref ) at the power meter . The power meter reading shoul d be 0.00 dB within ±0.01 dB. Step 8: Set the OA 5000 to each of the settings in the tabl e belo w , and check that the power meter reads w ithi n the listed accuracy limi ts. At 30 db, note[...]

OA 5000 Series User Manual A --- 3 1 App endix H: Rep laceable P ar ts This chapter contai ns a list of the compo nents that are replaceable for the OA 5002, OA 5012, OA 5022, and OA 5032 Opti cal Attenuato rs. As de - scribed belo w , use this list to i dentify and order replacement parts. Replacement parts are avail able fro m or thro ugh yo ur l[...]

Appe ndix H: R epla ce able Pa rts Appe ndic es A --- 3 2 Indentation System This parts li st is indented to show the relati onship between items. The foll owing example is of the indentation sy stem used in the Descripti on column: 12345 N a m e & D e s c r i p t i o n Asse mbly an d/or Compon ent Attach i ng parts for Ass embly and/or Compone[...]

Appe ndix H: R epla ce able Pa rts OA 5000 Series User Manual A --- 3 3 1 2 3 4 5 6 Figure A-6: OA 5000 Repl acea ble Parts[...]

Appe ndix H: R epla ce able Pa rts Appe ndic es A --- 3 4 CROSS INDEX - - - MFR. CO DE NUMBE R T O MANUF ACTUR ER Mfr . Cod e Manufact urer Add ress Cit y , State, Zip Code 0J260 COMTE K MANU FA CTURI NG OF ORE GON P O BOX 4200 M / S 1 6 --- 2 0 7 BEAVERTON, OR 970764200 0JR05 TRIQUEST PRECIS ION PL ASTICS 3000 LEWIS & CLARK HWY PO BOX 66008 VA[...]

Appe ndix H: R epla ce able Pa rts OA 5000 Series User Manual A --- 3 5 Fig. & Index No. Te k t r o n i x Pa r t N o. Serial No. Eff ective Dscont Qty 12345 Name & Desc ripti on Mfr . Cod e Mfr . Part N o. A 6 --- 1 337 - - - 3039 - - - 00 2 SH IELD ,ELE C : 0J 260 ORD ER B Y DE S C - - - 2 214 - - - 3143 - - - 00 1 SPRING,HLEXT :0.125 ID X[...]

Appe ndix H: R epla ce able Pa rts Appe ndic es A --- 3 6[...]

Index[...]

[...]

OA 5000 Series User Manual I --- 1 Index A Abbreviating, Co mmand, 3 --- 8 absol ute display mode, 2 --- 6 See a l so RE F er enc e co m m a nd Acce ssorie s, A --- 1 Optional, A --- 1 Standard, A --- 1 ADDR (SET) button, 2 --- 9 , 3 --- 3 ALLev? Command, 3 --- 1 5 ALLev? command, 3 --- 2 2 – 3 --- 2 3 Amplitude. See Pul s e gener a tor , Amp lit[...]

Index I --- 2 D DA N GE R, state me nt on e qu ip m ent, ix DCL, A --- 7 DESE command, 3 --- 1 9 , 3 --- 3 7 DESER regist er , 3 --- 1 9 , 3 --- 2 7 – 3 --- 2 8 , 3 --- 3 7 Device Cl ear , 3 --- 5 , A --- 7 Dev ice com m a nd, Li st, 3 --- 1 4 Dev ice eve nt sta tus e nab le re gi ster . See DESER re gi ster Diagram, Syntax, 3 --- 1 1 DISABLE but[...]

OA 5000 Series User Manual I --- 3 N Numer ic, C omman d ar gumen t , 3 --- 1 0 O Offset. See Pul se g enera t or , Of fs et *OPC c omman d, 3 --- 2 7 Operation c omplet e command, 3 --- 2 7 Operation c omplet e wait, 3 --- 3 4 Op tica l Cab les, op tion al a ccessori es, A --- 1 Op tica l O utpu t, x , 2 --- 3 optic al output power , approximating[...]

Index I --- 4 STORE 1, STOR E2 buttons , 2 --- 1 5 Syntax BNF (Ba ckus N a ur f orm), 3 --- 5 Co mmand, 3 --- 5 Diagram, 3 --- 1 1 T Ta b l e AS CI I ch ara cter , A --- 8 Co mmon c o mman d, 3 --- 1 3 Dev ice com m a nd, 3 --- 1 4 Pr ogr amming me s s ag e, 3 --- 4 1 T e k S td. Cod es a nd Form a ts 1989, 3 --- 1 3 T e rm in ator , Com m and me s[...]