Agilent Technologies E3631A manual

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The Agilent T echno logies E363 1A is a high performan ce 80 watt-triple output DC power supply with GPIB an d RS-2 32 inter faces. The combin ation of bench- top and system fe atures in this powe r supply prov ides ver satile solutions for your desig n and test req uiremen ts. Convenient bench -top featur es • Tri ple out put • Easy -to-use kn[...]

2 The Front Panel at a Glance 1 Meter and adjust selection keys 2 Tracking enable/disable key 3 Display limit key 4 Recall operating state key 5 Store operating state/Local key 6 Error/Calibrate key 7 I/O Configuration / Secure key 8 Output On/Off key 9 Control knob 10 Resolution selection keys 11 Voltage/current adjust selection key[...]

3 1 Meter and adjust sele ction keys Select the output volta ge and c urrent of a ny one supply (+6 V, +25V, or -25V outpu t) to be mo nitored on the displ ay and allo w kn ob adjustm ent of that supp ly. 2 Tracking enable / disable key Enables / disab les the tra ck mode of ± 25V su pplies. 3 Display limit k ey Shows th e volta ge an d cu rrent l[...]

4 Front-Panel Voltage and Cu rrent Setti ngs Y ou can set the v oltage and current from the front panel using t he followi ng method. 1 Press the key aft er turning o n the power su pply. 2 Set the k nob to the voltage con trol mode or current c ontrol mo de using the voltage/ current a djust se lection k ey. 3 Move the bl inking digit to the appro[...]

5 Display Annunciators Adrs Power supply is addressed to listen or talk over a remote interface. Rmt Power supply is in remote interface mode. +6V Displays the output voltage and current for +6V supply. Knob is active for +6V supply. +25V Displays the output voltage and current for +25V supply. Knob is active for +25V supply. -25V Displays the outp[...]

6 The Rear Panel at a Glance Use the front-panel key to: • Select the GPIB or RS-232 interface (see chapter 3). • Set the GPIB bus address (see chapter 3). • Set the RS-232 baud rate and parity (see chapter 3). 1 Power-line voltage setting 2 Power-line fuse-holder assembly 3 AC inlet 4 Power-line module 5 GPIB (IEEE-488) interface connector 6[...]

7 In This Book Specificat ions Chapter 1 lists the power supply ’s specifica tions and describe s how to interpret the se specifica tions. Quic k S tar t Chapter 2 pre pares the power supply for use and help s you get familiar with the fro nt-pane l features. Calibration Proced ures Chapte r 3 prov ides performanc e verification and calibra tion [...]

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9 Contents Conten ts Chapter 1 Specificatio ns Performanc e Spe cifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15 Suppleme ntal Cha racteristic s - - - - - - - - - - - - - - - - - - - - - - - - - - - 17 Chapter 2 Quick Start To prepa re the power supply for use - - - - - - - - - - - - - - - - - - - - - - 23 To chec k the rate[...]

Contents 10 Chapte r 3 Calibration Pro cedures ( continued) Constant Curr ent (CC) Ver ifications - - - - - - - - - - - - - - - - - - - - - - 54 Constant Curr ent Test Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - 54 Current Prog ramming and Rea dback Ac curac y - - - - - - - - - - - - 54 CC Load R egulation - - - - - - - - - - - - - [...]

Contents 11 Contents Chapter 5 Service (co ntinued) Repack ing for Shipme nt - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 95 Electrostatic Discharg e (ESD) Pre cautions - - - - - - - - - - - - - - - - 96 Surface M ount Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 96 To Repla ce the Power-Lin e Fuse -[...]

Contents 12[...]

1 1 Specificatio ns[...]

14 Specificat ions The performance sp ecificatio ns ar e listed in the following pa ges. Speci fications are warr anted in the tem perature range of 0 to 40°C with a re sistive load. Supplemental cha ra ct er ist ic s, w hic h ar e n ot wa rr an ted bu t a re d esc r ipt ion s o f performa nce de termined either by de sign or testing. C hapter 3 &[...]

Chap ter 1 Speci fic ations Performance S pecifications 15 1 Performa nce Specific ations Output Ratings ( @ 0 ° C - 40 ° C) +6V Output 0 to +6 V ; 0 to 5 A +25V Output 0 to +25 V ; 0 to 1 A -25V Output 0 to -25 V ; 0 to 1 A Programming Accura cy [1] 12 months (@ 25 ° C ± 5 ° C), ± (% of output + offs et) +6V Output +25V Output -25V Output V [...]

Chap ter 1 Speci fic ations Performance S pecifications 16 Programming Re solution +6V Output +25V Output -25V Output V oltage 0.5 m V 1.5 mV 1.5 mV Current 0.5 m A 0.1 m A 0.1 mA Readback Resolution +6V Output +25V Output -25V Output V oltage 0.5 m V 1.5 mV 1.5 mV Current 0.5 m A 0.1 m A 0.1 mA Meter Resol ution +6V Output +25V Output -25V Output [...]

Chapter 1 Specifications Supplemental Characteristics 17 1 Supplemental Characteristics Output Programming Range (maximum programmable values) +6V Output +25V Output -25V Output Voltage 0 to 6.18 V 0 to 25.75 V 0 to -25.75 V Current 0 to 5.15 A 0 to 1.03 A 0 to 1.03 A Temperature Coefficient , ± (% of output + offset) Maximum change in output/read[...]

Chap ter 1 Speci fic ations Supplemental Characte ristics 18 Cooling Fan coo led Operating Tem perature 0 to 40 ° C fo r full rated output. At higher tem peratures, the output current is derated linearly to 50% a t 55 ° C maximum tem perature. Output Voltage Overshoot During t urn-on or turn-o ff of ac power , output plus o vershoot will not exce[...]

Chap ter 1 Speci fic ations Supplemental Characte ristics 19 1 Figure 1 -1. Dimen sions of Agilent E36 31A Pow er Supply[...]

Chap ter 1 Speci fic ations Supplemental Characte ristics 20[...]

2 2 Quick Start[...]

22 Quick Star t One of the first thing s you will want to do with y our power su pply is to bec ome acquai nted wit h its fron t pa nel. W rit ten proced ures in this chapt er prepar e the power supply for use and fa miliarize you with most front-pan el opera tions. • The power supply i s shippe d from the factory configur ed in the fro nt-panel [...]

Chap ter 2 Qui ck St art To prepare the power supply for use 23 2 To prepare the po wer supply for use The following step s help you ve rify that the powe r supply is rea dy for use. 1 Check th e list of supplied items. V erify tha t you have receiv ed the following items with your power supply . If anything is missing, co ntact your nea rest Agile[...]

Chap ter 2 Qui ck St art To prepare the power supply for use 24 1 Re move the powe r co rd. Remove the fuse-holder as sembly with a flat-blade screwdri ver from the rear panel. 2 Inst all t he co rect line f use . Remove the po wer-line voltage selector from the pow er-line 3 Rotate the power-l ine voltage selector until th e correct voltage appear[...]

Chap ter 2 Qui ck St art To check the rated voltages of the power supply 25 2 To chec k the ra ted vol tage s of the powe r supply The following procedures check to ensure that the power supply deve lops its rated volta ge outputs with no loa d and prope rly respo nds to operatio n from the front pane l. For each step, use the key s shown on the le[...]

Chap ter 2 Qui ck St art To check the rated voltages of the power supply 26 5 Check th e voltage function for the +25V supply. Select the m eter and a djust selection key for the +25 V supply . The CV annuncia tor is still lit and the +25V annunciator will turn on. Rep eat st eps (3) and (4) to c heck the v oltage func tion for the +25V supp ly . 6[...]

Chap ter 2 Qui ck St art To check the rated currents of the power supply 27 2 To chec k the rated c urrents o f the powe r supply The following procedures check to ensur e that the power supply deve lops its rated cur rent outputs with a short a nd properl y responds to op eration from the front pane l. For each step, use the key s shown on the lef[...]

Chap ter 2 Qui ck St art To check the rated currents of the power supply 28 6 Ensure that t he current can be adjuste d from zer o to the maximum rated value . 1 Adjust the knob until the a mmeter i ndicates 0 amps and th en un til the am meter indicates 5 .0 amps. 7 Check th e current func tion for the +25V supply. Disable the ou tputs by pre ssin[...]

Chap ter 2 Qui ck St art To use the power supply in constant voltage mode 29 2 To use t he power s upply i n consta nt volt age m ode T o set up the po wer supply for consta nt voltage (CV) opera tion, procee d as follows. For each step, use the key s shown on the left margi n. 1 Connect a loa d to the de sired output te rminals. With power-off, co[...]

Chap ter 2 Qui ck St art To use the power supply in constant voltage mode 30 5 Adjust the knob for the desired curr ent limit. 1 Check that the Lmt annuncia tor still blinks. Set the knob for cu rrent control. The second digit of ammeter will be blinking . Ad just the knob to the desire d curren t limit. 6 Adjust the knob for the desired output vol[...]

Chap ter 2 Qui ck St art To use the power supply in constant current mode 31 2 To use t he power s upply i n consta nt curre nt mo de T o set up the po wer supply for consta nt current (C C) opera tion, proce ed as follows. For each step, use the key s shown on the left margi n. 1 Connect a loa d to the out put terminals of th e desired supply. Wit[...]

Chap ter 2 Qui ck St art To use the power supply in constant current mode 32 5 Adjust the knob for the desired voltage limit. 1 Check tha t the knob is still selec ted for voltag e control a nd the Lmt annuncia tor blinks. Adju st the knob for the desi red voltag e limit. 6 Adjust the knob for the desired output current. 1 Set the knob for current [...]

Chap ter 2 Qui ck St art To use the power supply in track mode 33 2 To use t he power s upply i n track mode The ± 25V supplie s p rovide 0 to ± 25 V tra cking outputs. In t he track mode, two voltage s of the ± 25V supplies track each other to wit hin ± (0.2% of output + 20 mV) for conve nience in varyin g the symme trical volta ges nee ded by[...]

Chap ter 2 Qui ck St art To store and recall the instrument s tate 34 To store a nd reca ll the instrum ent sta te Y ou can store up to thr ee differen t operating sta tes in non-volatile me mory . This also enables you to recall t he entire instrument state with just a few key presses from the front panel. The memor y locations are supplied fro m [...]

Chap ter 2 Qui ck St art To store and recall the instrument s tate 35 2 4 Sav e the op erati ng state. The ope rating state is now stored. T o recall the stored state, go to the following steps. This message appears on the di splay for a pproximately 1 second. 5 Turn o n the rec all mode . Memory loc ation "1 " will be displaye d in the r[...]

Chapter 2 Quick Start To rack mount the power supply 36 To rack mount the power supply The power supply can be mounted in a standard 19-inch rack cabinet using one of three optional kits available. A rack-mounting kit for a single instrument is available as Option 1CM (P/N 5062-3957). Installation instructions and hardware are included with each ra[...]

Chapter 2 Quick Start To rack mount the power supply 37 2 To rack mount two instruments of the same depth side-by-side, order lock-link kit 5061-9694 and flange kit 5063-9214. To install two instruments in a sliding support shelf, order suport shelf 5063- 9256, and slide kit 1494-0015.[...]

Chap ter 2 Qui ck St art To rack mount the power supply 38[...]

3 Calibration P rocedures[...]

40 Calibration Procedures This chapter contains proc edures for verificatio n of the power suppl y's performa nce and c alibration (adjustment). The chapter is d ivided into the following sectio ns: • Agile nt Technolog ies Calibr ation Serv ices, pag e 41 • Calib ration Interva l, page 4 1 • Aut omat ing Cal ibra tio n Pro cedure s, p a[...]

Chap ter 3 Ca libr atio n Pro cedu res A gilent Technologies Calibration S ervices 41 3 Closed-Case Elec tronic Calibrati on The power supply features cl osed- case ele ctronic c alibration sin ce no inter nal mecha nical ad justments are require d for normal calibratio n. The power suppl y calcul ates corre ction factors base d upon the input re f[...]

Chapter 3 Calibration Procedures Automating Calibration Procedures 42 Automating Calibration Procedures You can automate the complete verification procedures outlined in this chapter if you have access to programmable test equipment. You can program the instrument configurations specified for each test over the remote interface. You can then enter [...]

Chap ter 3 Ca libr atio n Pro cedu res Test Considerations 43 3 Test C onsidera tions T o ensure pr oper instrum ent operatio n, verify that y ou have se lected the correc t power-line v oltage pri or to attempting a ny test proce dure in this chapter. See pag e 24 in cha pter 2 for mor e information . • Assure tha t the cali bration ambie nt te [...]

Chap ter 3 Ca libr atio n Pro cedu res Performance Veri fication Tests 44 Performa nce Verific ation Tes ts The perfo rmance ver ification tests use the power supply 's specific ations listed in chapter 1, "Specifica tions", starting on page 13. Y ou ca n perform two different levels of performanc e verification t ests: • Se lf-T e[...]

Chapter 3 Calibration Procedures Measurement Techniques 45 3 Measurement Techniques Setup for Most Tests Most tests are performed at the front terminals as shown in the following figure. Measure the dc voltage directly at the (+) and (-) terminals on the front panel. Figure 3-1. Performance Verification Test Setup Electronic Load Many of the test p[...]

Chapter 3 Calibration Procedures Measurement Techniques 46 load resistor is plugged into the front of the output terminals at (B). A measurement made across the load includes the impedance of the leads to the load. The impedance of the load leads can easily be several orders of the magnitude greater than the power supply impedance and thus invalida[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Voltage (CV) Veri fications 47 3 Consta nt Volta ge (CV) Ve rificati ons Constant Voltage Test Setup If mo re than one me ter o r a meter and an oscillo scope are used, connec t each t o t h e ( + ) a n d ( - ) t e r m i n a l s b y a s e p a r a t e p a i r o f l e a d s t o a v o i d m u t u a l c o[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Voltage (CV) Veri fications 48 5 Readba ck the output voltage of t he selected output over the remote interface by sending the comma nd: MEAS:VOLT? {P6V|P25V|N25V} 6 Record the value displayed on the controller . This value shoul d be within the limits specified below for eac h output tested . 7 Progr[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Voltage (CV) Veri fications 49 3 CV Load Regulation This test measur es the cha nge in the ou tput volta ge resulting from a c hange in the output curr ent from full to no load . 1 Turn off the power supply and conne ct a digital voltm eter between the (+) and (-) ter minals o f the outpu t to be te s[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Voltage (CV) Veri fications 50 CV Line Regulation This test measures the change in output voltage that resu lts from a chang e in ac line v oltage from the minim um v alue (1 0% below the nom inal input vo ltage) to maximum v alue (10 % above the nominal input voltage ). 1 Tur n o ff th e p ow er s up[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Voltage (CV) Veri fications 51 3 Normal Mode Voltage Noise (CV Ripple and Noise) The norma l mode voltag e noise is in the form of ripple related to the line frequenc y plus some r andom noise. The n ormal mode v oltage noise is spec ified as the rms or peak-to-p eak output voltag e in a frequenc y ra[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Voltage (CV) Veri fications 52 Common Mode Curr ent Noise The co mmon mode curr ent is tha t a c curr ent com ponent which exists be tween any or all outputs or output l ines and chassis groun d. Co mmon m ode noise can be a probl em for very sensitive circuitry that is referen ced to ear th ground. W[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Voltage (CV) Veri fications 53 3 Load Transient Response Time Thi s te st m ea su re s th e ti me for the ou tpu t v olt ag e to re co ve r to wi thi n 15 mV of nominal output voltage following a load change from full load to half load, or half load to full lo ad. 1 Turn off the power supply an d conn[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Current (CC) Verifica tions 54 Consta nt Current (CC) Veri ficatio ns Constant Current Test Setup Follow the ge neral se tup in structions in the "Measure ment T ec hniques" section starting on page 45 and the specific instruction s will be give n in the following paragr aphs. Current Progra[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Current (CC) Verifica tions 55 3 5 Readba ck the output cu rrent from the se lected outpu t over the re mote interface by sending the comman d: MEAS:CURR? {P6V|P25V|N25V} 6 Record the value displayed on the controller . This value shoul d be within the lim its sp ecifi ed b elow f or ea ch o utpu t t [...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Current (CC) Verifica tions 56 CC Load Regulation T h i s t e s t m e a s u r e s t h e c h a n g e i n o u t p u t c u r r e n t r e s u l t i n g f r o m a c h a n g e i n t h e load from full-sc ale output vo ltage to short cir cuit. 1 Tur n o ff the po w er s up pl y a nd co nn ec t t he ou tp ut [...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Current (CC) Verifica tions 57 3 CC Line Regulation This test measur es the cha nge in output curr ent that results from a change in ac line voltage from the minim um v alue (1 0% below the nominal inp ut voltage ) to the maximum value (1 0% abov e nominal voltage) . 1 Turn off the power supply an d c[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Current (CC) Verifica tions 58 Normal Mode Current Noise (CC Ripple and Noise) The norma l mode c urrent noise is specified as the rms output curr ent in a frequen cy rang e 20 Hz to 20 M Hz with the power supply in constant cur rent operation . 1 Turn off the power supply an d conn ect the o utput to[...]

Chap ter 3 Ca libr atio n Pro cedu res Performance Test Record for A gilent E 3631A 59 3 Performa nce Test Re cord for Agi lent E36 31A CV Perform ance Test Record Test Des cripti on Actual Result Specifi cation s Uppe r Limit Low er Li mit CV Prog ramming A ccuracy @ 0 vol ts (DVM reading) +6V supply +25V supply -25V s upply +0.0050 V +0.0200 V +0[...]

Chap ter 3 Ca libr atio n Pro cedu res Performance Test Record for A gilent E 3631A 60 CC P erformance Test Recor d Test Descript ion Act ual Result Specifi cation s Uppe r Limit Low er Limit CC Prog ramming A ccuracy @ 0 amps (I O ) +6V supply +25V supply -25V supply +0.0100 A +0.0040 A +0.0040 A -0.0100 A -0.0040 A -0.0040 A CC Readback A ccuracy[...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration S ecurity Code 61 3 Calibra tion Sec urity C ode This feature a llows you to enter a security c ode (ele ctronic ke y) to preve nt accide ntal or unau thorized ca librations of the po wer supply . When you first receiv e your po wer supply, it is secure d. Before yo u can ca librate the po wer supp[...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration S ecurity Code 62 To Unsecure the Power Suppl y for Calibration The power supply can use a calibration security code to prevent unauthorized or ac cidental calibra tion. This p rocedur e shows y ou how to unsecu re the power sup ply fo r calibra tion from the fro nt pane l. 1 Turn on th e front -pa[...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration S ecurity Code 63 3 4 Unsecure the power supply. The power supply is unsecure d when you pre ss the key . Y ou will see the above message from the front pane l for one seco nd. The "CAL MODE " message is displayed on the front pane l after abov e message . 5 Turn off the c alibration mode[...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration S ecurity Code 64 To Unsecure the Power Suppl y Without the Security Code T o un secure the power supply witho ut the c orrect security code (when y ou for get the se curit y code), foll ow the st eps bel ow . See "El ectro sta tic Disch arge (ESD) Prec autions" in c hapter 5 b efore beg [...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration Count 65 3 Calibra tion Co unt The calibra tion count feature provides an inde pendent "seria lization" of your calibra tions. Y ou can deter mine the num ber of times that yo ur power supply has been c alibrate d. By monitorin g the calib ration coun t, you can dete rmine whether an u na[...]

Chap ter 3 Ca libr atio n Pro cedu res General Ca libration/A djustment Pr ocedure 66 General C alibrat ion/Adjus tme nt Proce dure The calibra tion p roced ures f rom t he fron t pane l are des cribed i n thi s sect ion . For output voltag e calib ration, disc onnect all loa ds from the power supply and connec t a DVM ac ross the ou tput terminals[...]

Chap ter 3 Ca libr atio n Pro cedu res General Ca libration/A djustment Pr ocedure 67 3 T o cali brate the output vo ltages and c urrents of the powe r supply from the front panel, pr oceed a s follows: 1 Unsecure the po wer supp ly. T o cali brate the output vo ltage and c urrent, you mu st unsecure the power supply ac cording to the procedu re gi[...]

Chap ter 3 Ca libr atio n Pro cedu res General Ca libration/A djustment Pr ocedure 68 7 Pressing the "Calibra te" key saves the cha nge and selects the second voltage calibrat ion point for the +6V supply. If the enter ed nu mber is wi thi n an accept able range, an " ENTER ED" mess age appear s for one sec ond. The display n ow[...]

Chapter 3 Cal ibration Proced ures General Calibration/A dj ustment Procedure 69 3 10 Select th e first curr ent calibration p oint for the +6V supply. The display shows the first curren t calibration point for the +6V supply . 11 Read the DVM and change t he first cur rent value on the displa y to match the computed c urrent (DV M reading ¸ by sh[...]

Chapter 3 Cal ibration Proced ures General Calibration/A dj ustment Procedure 70 13 Read the DVM and change t he second c urrent value on the d isplay to match the computed c urrent (DV M reading ¸ by shunt resista nce). For example, if the compute d value is 4.999 A, adjust the current to 4.999 A using the knob and arrow key s. Notice that you sh[...]

Chap ter 3 Ca libr atio n Pro cedu res A borting a C alibration in Progress 71 3 Aborting a Calib ration in Progress Sometimes it may be necessar y to abort a calibra tion after t he proce dure has alread y been initia ted. Y ou can abo rt a calibra tion at any time by turning the power supply off fro m the front panel. Whe n performin g a calib ra[...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration Rec ord for A gil ent E3631A 72 Calib ration Rec ord for Agile nt E36 31A Step Calibr ation Descr iption Measur ement Mode (DVM) Supply being Adjust ed 1 Unsecure the power supply (see page 62). 2 Turn on " CAL MO DE " (simultaneous ly press " Calibrate " and " Power "[...]

Chap ter 3 Ca libr atio n Pro cedu res Error Messages 73 3 Error Messa ges The following tab les are ab breviate d lists of error me ssages for the E 3631A . The e rrors list ed are th e most likely error s to be enc ounter ed dur ing cali brat ion and adjustme nt. A more co mplete list of erro r message s and descr iptions is containe d in chapter[...]

Chap ter 3 Ca libr atio n Pro cedu res Error Messages 74 Calibration Er ror Messages Error Error Message 701 Cal security disabled by jumper 702 Cal secured 703 Invalid secure code 704 Secure code t oo long 708 Cal output disabled 711 Cal sequence interrupted 712 Bad DAC cal data 713 Bad readback c al data 740 Cal checksum failed, secure state 741 [...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration P rogram 75 3 Calibra tion Program This sec tion c ontains an A gilent BASIC progra m for cal ibration over the GPIB interface . This program makes software a djustments to the E3 631A p ower supply usin g a c urrent shu nt and a digital mutimeter which is c onnected to the controller. In thi s pro[...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration P rogram 76 ...continued 400 PRINT TABXY(10,10),"********* ****************************************" 410 PRINT TABXY(10,11)," Using th e annunciator, note the output selected." 420 PRINT TABXY(10,12)," Connect the selected output to the DMM. Observe" 430 PRINT TABXY(10[...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration P rogram 77 3 ...continued 910 PRINT TABXY(10,9),"********** *****************************************" 920 PRINT TABXY(10,10)," Connect a CURRENT SHUNT to the Dmm for measuring" 930 PRINT TABXY(59,10)," current. " 940 PRINT TABXY(10,11)," Using th e annunciator, [...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration P rogram 78[...]

4 4 Theory of Op eration[...]

80 Theory of Op eration This chapter provides bl ock diagr am leve l description s of the power supply . The descri ptions provide a basic und erstanding of circuit ope ration and a re intended as an aid in tro ubleshooting . It is assume d in the following discussions that you are familiar with the op erating a nd progra mming instruc tions presen[...]

Chapter 4 Theory of Operati on Blo ck D ia gram Ov erv iew 81 4 Block Diagram Overvi ew This discussion pe rtains to the bloc k diagra m on the next pa ge. The power supply's ci rcuitry is div ided into two majo r blocks: the floatin g circuitr y and the ground re ference d circuitr y . All power mesh and contro l circuits, displa y circuit, a[...]

Chapter 4 Theory of Operati on Blo ck D ia gram Ov erv iew 82 Block Di agram EARTH REFERE NCED CIRCUITRY FLOA TING CIRCUITRY[...]

Chapter 4 Theory of Operati on A C Input and Bias Supplies 83 4 AC Input a nd Bia s Supplie s Refe rring to t he schemat ic show n on page 127, the ac mains are con necte d by a fused power module. This modu le incorpo rates the functio ns of mains connec tion, fusing, and line voltage selection (1 00/11 5/230 V a c). The line voltage selection fun[...]

Chapter 4 Theory of Operati on Floating Logic 84 Floating Logic Referrin g to the schema tic shown on pag e 128, the floating comm on logic controls ope ration of the entir e instrument. Al l output functions and bus command interpreta tion is performe d in the main c ontroller U1 7. The front panel an d the earth re ference d logic ope rate as sla[...]

Chapter 4 Theory of Operati on Floating Logic 85 4 Th e s er i a l re g i s te r i s u s e d t o s en d a n d r e c e i v e s e r i al d a ta b y t es f r om t he m a i n controller to the DAC system , or to communic ate with the front pane l controller. The seria l register is mu ltiplexed to these two circuits. The transmission rate is se lecte d[...]

Chapter 4 Theory of Operati on D-to-A Converter 86 D-to-A Conve rter Referrin g to the schem atic shown on page 12 9, all refere nce v oltages of power c i r c u i t s a r e d e r i v e d f r o m t h e i n t e r n a l v o l t a g e r e f e r e n c e o f s y s t e m D A C U 1 2 o n the top board. The system DAC tra ck/hold am plifier outputs ar e us[...]

Chapter 4 Theory of Operati on A -to-D Converter 87 4 A-to-D Conve rter Referrin g to the sc hematic sho wn o n p age 129, the a nalog-to-d igital converter (ADC) is use d to change dc voltag es into digital infor mation. The cir cuitry consists of an integ rator amp lifier (U6 an d U8), curre nt steering switch U5, resistors (R5 , R4, R15 a nd R16[...]

Chapter 4 Theory of Operati on Power Mesh and Control 88 Power Mes h and Co ntrol Refer to the sc hema tics shown on pag e 130 an d page 1 31. For the ±25V powe r mesh and c ontrol circ uit, a prereg ulator is add ed ahea d of the serie s pa ss transi stor to minim ize the power dissipated in the serie s pa ss transistor by c ontrolling the dc lev[...]

Chapter 4 Theory of Operati on Power Mesh and Control 89 4 T wo er ror a mplifiers a re included in a C V/CC supply, o ne for controllin g outpu t voltage, the other for contro lling output cur rent. Since the constant vol tage amplifier tends to ac hieve zero output impeda nce and a lters the output curren t wheneve r the load re sistance ch anges[...]

Chapter 4 Theory of Operati on Earth-Referenced Logic 90 Earth-Re ferenc ed Logi c Referrin g to the schema tic shown on pag e 132, the earth refe renced logic circuits sch ematic pro vides all re ar pane l input/output ca pability . Micropro cessor U10 on the bottom boa rd handles GPIB (IEEE-48 8) control through bus interfac e chip U8 and bus rec[...]

5 5 Service[...]

92 Service This chapter discusses the pr ocedure s involved for returning a failed powe r supply to Agile nt T echn ologies for service or re pair. Sub jects cove red includ e the following: • Opera ting Chec klist, page 93 • Types of Se rvice A vailabl e, page 9 4 • Repa cking for Sh ipment, pag e 95 • Elec trostatic Disc harge (ESD) Preca[...]

Chap ter 5 Ser vice Op erat ing Ch eckl ist 93 5 Operati ng Che cklist Before re turning yo ur power supply to Agilent T echnolog ies for serv ice or repair c heck the follo wing items: Is the Power Supply Inoperative? V erify that the a c power co rd is connec ted to the power sup ply . V erify that the fro nt-panel powe r switch is depre ssed. V [...]

Chap ter 5 Ser vice Types of Service A vailable 94 Types of Service Availa ble If your power supp ly fails within three years of ori ginal purc hase, Agi lent T ec hnologie s will repair or repla ce it free of char ge. If your unit fails a fter your three ye ar warran ty expires, A gilent will repa ir or repl ace it as a v ery competitiv e price. A[...]

Chap ter 5 Ser vice Repacking for Shipment 95 5 Repa cking for Shipm ent For the Express Exchange Service descr ibed o n the previous page, retu rn your failed Agi lent E3631A to t he desig nated Agile nt Ser vice Cente r using the shipping c arton of the exch ange unit. A ship ping la bel will be supplie d. A gilent will notify you when your faile[...]

Chap ter 5 Ser vice Electrostatic Disc harge (ESD) Pr ecautions 96 Electro stat ic Disc harge (ESD) Prec aution s Almost all ele ctrical c omponents c an be dama ged by electrostatic discharg e (ESD) duri ng handlin g. Compo nent dama ge can oc cur at ele ctrostatic dis charge vol tages as low as 50 volt s. The following g uidelines will he lp prev[...]

Chap ter 5 Ser vice Troubleshooting Hints 97 5 Troublesh ooting Hin ts This section pro vides a brie f check list of co mmon failure s. Before troubleshoo ting or repair ing the power supply , make sure that the f ailu re is in the instrument rather than any extern al connections. Also make sure t hat the instrument is ac curately calibra ted. The [...]

Chap ter 5 Ser vice Troubleshooting Hints 98 Bias Supp lies Problem s Check that the input to t he voltage regulators of the bias supplies is at least 1 V greater than their output. Circuit fa ilures can c ause heav y load s of the bi as supp lies which ma y pull down the regula tor output voltag es. Check the voltages o f bias supplie s as tabulat[...]

Chap ter 5 Ser vice Self-Test Procedures 99 5 Self -T est Pro cedur es Pow er-O n Sel f-T est Each time the power supply is powered on , a set of self-tests are pe rformed. These tests che ck that the minim um set of logic an d measure ment hardwa re are functioning pr operly . T he power-on self-test perform s ch ecks 601 throug h 604 an d 624 thr[...]

Chap ter 5 Ser vice Self-Test Procedures 100 605 Cannot c alibrate rundown gain Thi s test check s the nominal gain betwee n integratin g ADC and the U17 on-chip ADC. This error is repo rted if the procedu re ca n not r un to c ompletion due to a hard ware fai lure. 606 Rundown gain out of range This test che cks t he nominal gain between the integ[...]

Chap ter 5 Ser vice Self-Test Procedures 101 5 632 P6V hard ware test failed This test chec ks the the status of voltag e and curren t error ampl ifiers for +6V power circuit. If both amplifie rs are not operation al, the power supp ly will beep a nd the erro r annuncia tor will be on. 633 P25V hardwa re test failed Thi s test checks the the status[...]

Chap ter 5 Ser vice Self-Test Procedures 102[...]

6 6 Replaceable Parts[...]

104 Replaceable Parts 7KLV F KDSWHUFRQWDLQV LQ IRUPDWLRQRUGHULQJ UHSODF HPHQW SDUWV IRU RXU SRZHU  VXSSO 7KHSDUWVOLVWVDUHGL YLGHGLQWRWKHIROO RZLQJIRXUJUR XSV  7 RS3&%$VVHP EO (   9)'$VVHPEO(  ?[...]

Chapter 6 Replaceable Parts E3631-60002 Top PCB Assembly 105 6 E3631-60002 Top PCB A ssembly Reference Designator A gilent Part Number Qt y Description Mfr Code Mfr Part Num be r C1-C2 0160-6497 26 CAP-FXD 0.1uF+-10% 50V CER X7R 04222 12065C104KAT A C3 0180-4116 2 CAP-FXD 22uF +-20% 20V TA 12340 T491D226M020AS C4-C5 0160-6497 CAP-FXD 0.1uF+-10% 50V[...]

Chapter 6 Replaceable Parts E3631-60002 Top PCB Assembly 106 Reference Designator A gilent Par t Number Qty Descrip tion Mfr Code Mfr Part Number CR1-CR3 1906-0291 10 DIODE-DUAL 70V 100m A TO-236 AA 28480 1906-0291 CR4-CR6 1901-1149 13 DIODE-PW R RE CT 400V 1A 50NS DO-41 71744 UF4004 CR7 1906-0351 2 DIODE-FW BRDG 200V 2A 71744 2KBP02M CR8-CR10 1906[...]

Chapter 6 Replaceable Parts E3631-60002 Top PCB Assembly 107 6 Reference Designator A gilent Par t Number Qty Descrip tion Mfr Code Mfr Part Number F1-F2 0699-2715 2 RESI STOR-FUSE 1 OHM +-5% 0. 5W @70 28480 0699-2715 R1 0699-1405 4 RESIST OR 38. 3K +-1% .125W TKF TC=0+-100 2M627 M CR18FX R2-R3 0699-1385 2 RESI STOR 5.11K +-1% . 125W TKF TC=0+-100 [...]

Chapter 6 Replaceable Parts E3631-60002 Top PCB Assembly 108 Reference Designator A gilent Par t Number Qty Descrip tion Mfr Code Mfr Part Number R60 0699-1456 2 RES I S TOR 562K +-1% .125W TK F TC=0+-100 2M627 MCR18FX R61 0699-1381 1 RES I S TOR 3.48K +-1% . 125W TK F TC=0+-100 2M627 MCR18FX R62 0757-0813 2 RES I S TOR 475 +-1% .5W TF TC=0+-100 91[...]

Chapter 6 Replaceable Parts E3631-60002 Top PCB Assembly 109 6 Reference Designator A gilent Par t Number Qty Descrip tion Mfr Code Mfr Part Number R103 0699-1357 RE S ISTOR 34.8 +-1% . 125W TKF TC=0+-100 2M627 MCR18FX R106-R107 0699-1391 RESIS TOR 10K +-1% .125W TKF TC=0+-100 2M627 MCR18FX R108 0757-0813 RE S ISTOR 475 +-1% . 5W TF TC=0+-100 91637[...]

Chapter 6 Replaceable Parts E3631-60002 Top PCB Assembly 110 Reference Designator A gilent Par t Number Qty Descrip tion Mfr Code Mfr Part Number U21 1826-1862 1 IC OP AMP LOW -BIA S-H-IMPD DUAL 8 PI N 01295 TL072ACD U22 1990-1659 2 OPTO-ISOLAT OR LE D-P TRIAC IF=50m A-m ax 12601 MCP3020Z U23 1826-1572 2 IC COMPARATOR PRCN DUA L 8P IN PLSTC 01295 L[...]

Chapter 6 Replaceable Parts E3631-6 0003 VFD Ass embly 111 6 E3631-60003 VFD Assembly Reference Designator A gilent Par t Number Qty Descrip tion Mfr Code Mfr Part Number C1-C3 0160-6497 14 CA P -FXD 0.1uF+-10%50V CE R COG 04222 12065C104K A T 2A C4-C5 0180-3751 2 CAP-FXD 1uF+-20%35V TA 12340 T491B 105M035AS C6 0160-5945 3 CAP-FXD 0.01uF+-10%50V CE[...]

Chapter 6 Replaceable Parts E3631-6 000 4 Bottom PCB Asse mbly 112 E3631-60004 Bottom PCB Assembl y Reference Designator A gilent Par t Number Qty Descrip tion Mfr Code Mfr Part Number SW 1 3101-2985 1 SW ITCH-PB DP S T-NO ALTNG 4A 250VA C 28480 3101-2985 C1-C6 0160-6497 21 CAP-FXD 0.1uF+-10%50V CE R X7R 04222 12065C104K AT A C7 0180-4228 1 CAP-FXD[...]

Chapter 6 Replaceable Parts E3631-6 000 4 Bottom PCB Assembly 113 6 Reference Designator Agilent Part Number Qty Description Mfr Code Mfr P art Num ber CR3 1906-0407 1 DIO DE -FW BRDG 400V 1A 71744 DF04S CR5-CR6 1901-1227 2 DIO DE -S W I CHING 75V 200m A 6nS T O-236 27014 BAS16 CR9-CR12 1906-0291 DIODE -DUA L 70V 100m A TO-236 A A 28480 1906-0291 C[...]

Chapter 6 Replaceable Parts E3631-6 000 4 Bottom PCB Asse mbly 114 Reference Designator Agilent Part Number Qty Description Mfr Code Mfr P art Num ber R22-R23 0699-3431 RE S I S TO R 4.99K +-1% .125W TKF TC=0+-100 2M627 MCR18FX R24-R25 0699-1357 2 RESISTO R 34.8 +-1% .125W TKF TC=0+-100 2M627 MCR18FX R26 0699-1408 1 RESISTOR 51.1K +-1% .125W TKF T [...]

Chapter 6 Replaceable Parts E3631-6 000 4 Bottom PCB Assembly 115 6 Reference Designator A gilent Par t Number Qty Descrip tion M fr Code Mfr Part Number R68-R69 0699-6239 2 RE S ISTOR 2.2M +-1% . 063W TK F TC=0+-250 00746 MCR01-MZS-F-2204 R70 0699-1327 RESIST OR 1M +-1% . 125W TKF TC=0+-100 2M627 MCR18FX RT1 0837-0261 1 V SUPPRESSOR 650V 4500A 343[...]

Chapter 6 Replaceable Parts E3631-6 0005 Front F rame Assembly 116 E3631-60005 Front Frame Assembl y E3631-60005 Power SupplyAssem bly Reference Designator A gilent Par t Number Qty Descrip tion Mfr Code Mfr Part Number C32(Bottom ) 0180-2980 1 CA P -FXD 1000uF +-20% AL-ELCTLT 55680 SME50VB102M16X25LL C42-C43 (Top) 0180-4355 2 CAP-FXD 470uF +-20% A[...]

Chapter 6 Replaceable Parts Manufac turer’s List 117 6 Manufacturer ’s List Mfr Code Manufacturer’ s Name M anufacturer’ s A ddress Zip Code 00746 ROHM CO LTD KYOTO, J P 00779 AMP INC HARRISB URG, PA 17111 00830 KYOCE RA INTERNATIONA L I NC SAN DIE GO, CA 92123 01295 TEXAS INSTRUMENTS I NC DALLAS, TX 75265 01870 CHERRY CORP ORATION W AUKEGA[...]

118[...]

7 Backdating[...]

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8 Schematics[...]

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Copyright © 1995 - 2000 Agilent T echnologies All Ri ghts Res erved. Printing History Edition 6 , Apri l 2000 New editions are comple te revisions of the manual. Update packages, which are issued betw een editions , may contain additional information and replace- ment pages w hich you merge into the m anual. The dates on this page change only when[...]