Agilent Technologies E3634A manual

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The Agi lent E3633A and Agi lent E3 634A are high per form ance 200 wat t sin gle- output dual ra nge prog rammabl e DC power sup plies with both GPIB and R S- 232 inter faces. The co mbination of be nch-top and system featu res in these power supplie s provide s versatile sol utions for your de sign and test requi remen ts. Convenient bench -top f[...]

2 The Front Panel at a Glance 1 8V/20A range selection key (E3633A) 25V/7A range selection key (E3634A) 2 20V/10A range selection key (E3633A) 50V/4A range selection key (E3634A) 3 Overvoltage protection key 4 Overcurrent protection key 5 Display limit key 6 Recall operating state key 7 Store operating state/Local key 8 Error/Calibrate key 9 I/O Co[...]

3 1 8V/20A * or 25V/7A ** r ange selection k ey Sele cts th e 8V/ 20A or 25V/7 A range and al lows the full rated ou tput to 8V/20 A or 25V/7 A. 2 20V/10A * or 50V/4A ** range selection key S elects the 20V/ 10A or 50V/4A ran ge and all ows the full rated outpu t to 20V/10 A or 50V/4A . 3 Overvoltage protection key Ena bles or disabl es the overvol[...]

4 Front-Panel Volta ge and C urrent Lim it Se ttings Y ou can set the voltage and current limit val ues from t he front panel usin g the fo llowing m etho d. 1 Select the d esired range usin g the range sele ction keys a fter turning on the power suppl y. 2 Press the key to show the limit values on the display . 3 Move the blinking digi t to the ap[...]

5 Display Annunciators Adrs Power supply is addressed to listen or talk over a remote interface. Rmt Power supply is in remote interface mode. 8V Shows the 8V/20A range is selected. (Agilent E3633A model) 20V Shows the 20V/10A range is selected. (Agilent E3633A model) 25V Shows the 25V/7A range is selected. (Agilent E3634A model) 50V Shows the 50V/[...]

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

7 In This Book This is the Servi ce Guide for your Agile nt E3633 A and E3 634A DC power supplies. Unle ss otherwise stated, the information in this ma nual appl ies to both two models. Sp ec ific at io ns Cha pter 1 lists the powe r supply’s spe cifications a nd describe s how to interpret the se specifica tions. Quick Start C h a p t e r 2 p r [...]

8[...]

9 Contents Conten ts Chapter 1 Specificatio ns Performanc e Speci fications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11 Suppleme ntal Chara cteristics - - - - - - - - - - - - - - - - - - - - - - - - - - - 13 Chapter 2 Quick Start To Prepare the Power Sup ply for Use - - - - - - - - - - - - - - - - - - - - - 23 To Check the Rated Vo[...]

10 Con ten ts Contents Chapter 3 Calibr ation Proced ures (Co ntinued) Constant Voltage (CV) Verific ations - - - - - - - - - - - - - - - - - - - - - - - 51 Constant Voltage Test Setup - - - - - - - - - - - - - - - - - - - - - - - - - - 51 Voltage Prog ramming and Read back Ac curacy - - - - - - - - - - - 51 CV Load Effec t (Load Reg ulation) - - -[...]

11 Contents Contents Chapter 5 Service Operating Checklist - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 97 Is the Power Supply Inoperative ? - - - - - - - - - - - - - - - - - - - - - - 97 Does the Power Su pply Fail Sel f-Test?- - - - - - - - - - - - - - - - - - 97 Types of Serv ice Ava ilable - - - - - - - - - - - - - - - [...]

12 Con ten ts Contents[...]

1 Specificatio ns[...]

14 Specificatio ns The performance spec ifications are listed in the following pages. Specifica tions are war ranted in the temperatur e range of 0 to 40°C with a resistive loa d. Supplemental cha racteristic s, which are not war ranted but are desc riptions of perfor mance d etermined either by de sign or testing . Chapter 3 ‘‘Calib ration Pr[...]

Chap ter 1 S pecif icati ons Performance Specifications 15 1 Performance Specifi cations Table 1-1. P erformance Spec ifications $FFX UDFVSH FLILFDWLRQVD UHDIWHUDQ KRXUZDUP XSZLWKQRORDGDQ G FDOLEUDWLRQ DW& 7KLVVSHFLILF DWLRQPD GHJUDGH ZKHQWKHXQLWLV[...]

Chap ter 1 Speci fic ations Performance S pecifications 16 Transient Re sponse Time Less than 50 m sec for output to recov er to within 15 mV following a chang e in output curre nt from full load to ha lf load or vice versa Command Proc essing Time A v erage tim e for output voltage to begin to change after rece ipt o f digital da ta when the power[...]

Chap ter 1 Speci fic ations Supplemental Characteristic s 17 1 Sup plement al Ch aracter isti cs Table 1-2. Supplementa l Characteristics Remote Sensing Capability V oltage drop Up to 0.7 V p er e ach l ead Load reg ulation Add 5 mV to spec for each 1 -volt chang e in the + output lead due to load cu rrent chan ges. Load volta ge Subtract vo ltage [...]

Chap ter 1 Speci fic ations Supplemental Characte ristics 18 Output V oltage Overshoot During turn-on or turn-off of ac power , output plus overshoot will not exceed 1 V if the output control is set to less than 1 V . If the ou tput control is set to 1 V or highe r , there is no ov ershoot. Programming Language SCPI (Standar d Comman ds for Program[...]

Chap ter 1 Speci fic ations Supplemental Characteristic s 19 1 Storage T emperature -20 to 70 °C for storage e nvironme nt. Environmental Conditions Designed for indoor use in an installa tion categ ory II, pollution deg ree 2 environ ment. Designe d to operate at a maximum relative h umidity of 95 % and at altitude s of up to 2000 m eters. Dimens[...]

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

2 Quick Start[...]

22 Quick Star t One of the first thing s yo u will wa nt to do with y our power su pply is to become acquai nted with it s front pane l. W rit ten proc edures 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 is shipped from the factory configure d in the front-panel ope[...]

Chapter 2 Quick Start To Prepare the Power Supply for Use 23 2 To Prepare the Pow er 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, contac t your nea rest Agilen t[...]

Chapter 2 Quick Start To Prepare the Power Supply for Use 24 Install the correct fuse a nd verify that the correct line voltage appe ars in the wind ow. 1 Remove the po wer cord. Rem ove the fuse- holder assembly wi th a flat-blade screw driver from the rear panel. 2 Install the correct line fuse. Rem ove the power- line voltage selector from the p[...]

Chapter 2 Quick Start To Check th e Rated V oltages of the Po wer Supply 25 2 To Chec k the R ate d Volta ges of the Powe r Supply The following procedure s c heck t o ensu re that the power su pply produc es its rated vo ltage ou tput with n o lo ad and p roperly re sponds to ope ration from the front panel. For each step, use the key s shown on t[...]

Chapter 2 Quick Start To Check t he Rated C urrents of t he Power Supply 26 To Chec k the R ate d Current s of the Powe r Supply The following procedure s c heck t o ensu re that the power su pply produc es 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 [...]

Chapter 2 Quick Start To Check th e Rated C urrents of t he Power Supply 27 2 6 Ensure that t he current can be adjuste d from zer o to the maximum rated value . Adjust the knob u ntil the ammeter indica tes 0 am ps and th en un til the amme ter indicates ‘ ‘20.0 am ps’’* or ‘‘7 .0 amps’’ **. Note If an error has been detected durin[...]

Chapter 2 Quick Start To Use the Power Supply in Constant V oltage M ode 28 To Use th e Power Suppl y in C onstant Voltage Mode T o se t up the power supply for constant vo ltage (CV) operation, pr oceed a s 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, connect [...]

Chapter 2 Quick Start To Use the Power Supply in Constant V oltage M ode 29 2 5 Adjust the knob for the desired output voltage. Check that the Li mit ann unciator still fla shes. Se t the knob for voltag e c o n t r o l . The second digit of the voltme ter will be flashing . Chang e the flashing digit using the reso lution selection keys and adj us[...]

Chapter 2 Quick Start To Use the Power Supply in Constant Curr ent M ode 30 To Use th e Power Suppl y in C onstant Current M ode T o se t up the power supply for constant cu rrent (CC ) operation , proceed a s follows. 1 Connect a loa d to the out put terminals. With power-off, connect a lo ad to the (+) and (-) output termina ls. 2 Turn on the pow[...]

Chapter 2 Quick Start To Use the Power Supply in Constant Curr ent M ode 31 2 5 Adjust the knob for the desired output current. Check tha t the Li mit an nunciator still flash es. Se t the kno b for current contr ol. The se cond digit of the amm eter will be flashing . Cha nge the fla shing dig it usin g the re solution selec tion ke ys an d adj us[...]

Chapter 2 Quick Start To Store and Recall the Instrument S tate 32 To Store and Recall the Instrument State Y ou can store up to three different oper ating states in no n-volatile memo ry . This also enables you to r ecall the entire instrument configura tion with just a few key pre sses from the fro nt panel. The memor y locations a re supplie d w[...]

Chapter 2 Quick Start To Store and Recall the Instrument S tate 33 2 4 Sav e the o perat ing state. The ope rating state i s now store d. T o reca ll the stored state, go to the following steps. 5 Turn on the rec all mode. Memory location “1 ” will be display ed in the rec all mode . This message appear s on the display for approxim ately 3 sec[...]

Chapter 2 Quick Start To Program Overvoltage Protection 34 To P rogra m Over voltag e Pr otect ion Overvo ltage prote ction guar ds the load ag ainst output voltag es that reac h a specified v alue gre ater than the program med protec tion level . It is accomp lished by short ing the output via a n in ternal SCR when t he trip lev el is set to equa[...]

Chapter 2 Quick Start To Program Overvoltage Protection 35 2 5 Exit the OVP menu. The “CHANGE D” messag e is highligh ted for a seco nd to show that the new OVP trip level is no w in effect. If the OVP settings a re not chang ed, “NO CHANGE” will b e display ed. The po wer supply will exit the OVP m enu and the display will re turn to the m[...]

Chapter 2 Quick Start To Program Overvoltage Protection 36 3 Clear the overvoltage condit ion and exit this menu. Now , when you pr ess key aga in, the “ DONE” messag e i s disp layed for a s e c o n d a n d t h e OVP ann unciator will not blink any m ore. The output will return to meter mode . • Adj ust OVP tr ip lev el 1 Raise the OVP tr ip[...]

Chapter 2 Quick Start To Program Overcurre nt Protection 37 2 To Program Overcurre nt Protec tion Overcu rrent protec tion guard s the load aga inst output curre nts that reach a spec ifi ed val ue greate r t han the prog rammed pro tect ion leve l. It is accomp lished by pr ogrammi ng the output cur rent to zero. The fol lowing steps show how to s[...]

Chapter 2 Quick Start To Program Overcurre nt Protection 38 5 Exit the OCP menu. The “CHAN GED” messa ge is displ ayed for a second to show that the new OCP trip level is now in effect. If the OCP setting s are not ch anged, “NO CHANGE” will be display ed. The power supply will exit th e OCP menu a nd the display will return to the me ter m[...]

Chapter 2 Quick Start To Program Overcurre nt Protection 39 2 3 Clear the overcurrent condition and exit th is menu. Now , when you press key a gain, the “DON E’’ messa ge is display ed for a second a nd the OCP annu nciator will not bli nk any more . The output will return to mete r mode. The kn ob is selected for current control. Notice tha[...]

Chapter 2 Quick Start To Rack Mount the Power Supply 40 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 5063-9243). Installation instructions and hardware are included with each ra[...]

Chapter 2 Quick Start To Rack Mount the Power Supply 41 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 support shelf 5063-9256, and slide kit 1494-0015.[...]

Chapter 2 Quick Start To Rack Mount the Pow er Supply 42[...]

3 Calibration P rocedures[...]

44 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: • Agilent Tec hnologie s Calibra tion Servic es, on page 45 • Cal ibrat ion In terv al, on page 45 • Automating Calibration Procedur es, on pag[...]

Chap ter 3 Ca libr atio n Pro cedu res A gilent Technologies Calibration S ervices 45 3 Note If you calibrate the power sup ply over the remote in terface, you must send the *R ST command to the p ower supply or turn the power supply off and on again a fter performing a calibration to en sure proper power supply operation. Closed-Case Elec tronic C[...]

Chap ter 3 Ca libr atio n Pro cedu res Automating C alibration Pr ocedure s 46 Autom ating Ca libratio n Proce dures Y ou can a utomate the com plete ver ification proc edures outline d in this chapter if you have access to prog rammabl e test e quipment. Y ou c an pro gram the instrument configura tions spec ified for each test over the re mote in[...]

Chap ter 3 Ca libr atio n Pro cedu res Recommende d Test Equipment 47 3 Recom m ende d Test Equi pme nt The test equipm ent recom mended for the performa nce ver ification an d adjustment procedu res is li sted below. If the exact instrument i s n ot a vailab le, use the acc uracy require ments shown to selec t substitute calibr ation standards. If[...]

Chap ter 3 Ca libr atio n Pro cedu res Performance V erification Tests 48 Performa nce Ve rifica tion Tests The perfo rmance verifica tion tests use the po wer supply ’s specific ations listed in chapter 1, ‘‘Spec ifications’’ , starting on pag e 13. Y ou can perform two differ ent levels of pe rformanc e verific ation tests: • Se lf-T [...]

Chap ter 3 Ca libr atio n Pro cedu res Measurement Techniques 49 3 Measu reme nt Tech niques Setup for Most Tests Most tests are per formed at the fro nt terminals as sho wn in the following figure. Measure the dc voltage dir ectly at the (+) and (-) termin als on the fro nt panel. Figure 3-1. Performance Verifi cation Test Se tup Electronic Load M[...]

Chap ter 3 Ca libr atio n Pro cedu res Measurement Techniques 50 General Measureme nt Techniq ues T o achie ve best r esults when m easuring lo ad reg ulation, pea k to peak v oltage, and transie nt response time of t he po wer supply , measuring dev ices must be connec ted through the hole in the neck of the binding post at (A) while the load resi[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Voltage (CV) Veri fications 51 3 Consta nt Volta ge (CV) Ve rificati ons Constant Voltage Test Setup If more than one meter or if a me ter and an oscilloscope are used , connect each to the ( +) and (-) ter minals by a se parate pa ir of leads to av oid mutual coupling effects. Use coaxi al ca ble or [...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Voltage (CV) Veri fications 52 7 Program the o utput voltag e to full rated valu e (20 .0 V)* or (50 .0 V)** by sendin g the comman d: VOLT 20.0 (E3633A) VOLT 50.0 (E3634A) 8 R e c o r d t h e o u t p u t v o l t a g e r e a d i n g o n t h e d i g i t a l v o l t m e t e r ( D V M ) . T h e r e a d i[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Voltage (CV) Veri fications 53 3 CV Source effect (Line Regulation) This test measures the change in output voltage that resu lts from a chang e in ac line v oltage from the m inimum va lue (10% be low the nom inal input vo ltage) to maximum v alue (10 % above the nominal input voltage ). 1 Turn off t[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Voltage (CV) Veri fications 54 CV P ARD (Ripple and Noise) Periodic and r andom d eviations (P ARD) in the output (r ipple a nd noise) combine to prod uce a residua l ac voltage superim posed on the dc output voltage . C V P A RD is specified a s the rms or peak-to-p eak output volta ge in the frequen[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Voltage (CV) Veri fications 55 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 sup ply and co n[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Current (CC) Verifica tions 56 Consta nt Current (CC) Verific ations Constant Current Test Setup Follow the genera l setup instructions in the ‘ ‘Measur ement T echniq ues’’ section, sta rting on page 50 a nd the specific instructions will be given in the following p aragra phs. Current Progra[...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Current (CC) Verifica tions 57 3 6 Record the value displayed on the controller . This value shoul d be within the limit of (I O ± 5 mA). 7 Program the output curre nt to the full rated va lue (20 .0 A)* or (7.0 A)** by sending the c ommand: CURR 20.0 (E3633A) CURR 7.0 (E3634A) 8 Divide the v oltage [...]

Chap ter 3 Ca libr atio n Pro cedu res Constant Current (CC) Verifica tions 58 CC Source Effect (Line Regulation) This test measures the change in outpu t current that results from a change in ac lin e volta ge from the m inimum v alue (10% below the nomina l input vo ltage) to the m aximum value (10% above nominal voltage ). 1 Turn off the power s[...]

Chap ter 3 Ca libr atio n Pro cedu res Common Mode Current Noise 59 3 2 Turn on the powe r supply. Sele ct the 8V/20 A* or 25V/7A ** range, e nable the output, and set the disp lay to the limit mod e. When the displa y is in the limit mode, prog ram the cur rent to full rated v alue (20 .0 A)* or (7 .0 A)** and the voltage to the full rated value ([...]

Chap ter 3 Ca libr atio n Pro cedu res Performance Test Recor d for A gilent E3633A a nd E3634A 60 Performa nce Test Re cord for Agi lent E36 33A and E3 634A CV Perform ance Test Record CC Perform ance Test Record Test Description Models Actual Result Specifications Upper Limit Lower Lim it CV Pro gramm ing Accuracy @ 0 volts (DVM readin g) both +0[...]

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 ca libration sec urity code to pre vent unau thorized or ac cidental calibra tion. This p rocedur e shows y ou how to unsecu re the power sup ply for calibra tion from the fro nt panel . 1 Turn on t he fro nt[...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration S ecurity Code 63 3 4 Unsecure the power supply. The power supp ly is unsecur ed when you press (Secur e) key . Y ou will s e e t h e a b o v e m e s s a g e f r o m t h e f r o n t p a n e l f o r o n e s e c o n d . T h e ‘ ‘ C A L M O D E ’ ’ message is displayed on the front pane l afte[...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration Count 64 Calibra tion Count The calibration count feature provides an independe nt ‘‘serialization ’’ of your calibra tions. Y ou can determin e the number of times tha t your power su pply has be en ca librated. By mon itoring the calib ration c ount, you can d etermine whether a n una uth[...]

Chap ter 3 Ca libr atio n Pro cedu res General Calibration/A dj ustment Procedure 65 3 General Calib ration/Ad justm ent Proce dure The calib rati on procedu res from t he fron t panel are des cribed in this sect ion . For voltage calibra tion, disconnect all load s from the power sup ply and connec t a DVM across the o utput terminals. For c urren[...]

Chap ter 3 Ca libr atio n Pro cedu res General Calibration/A dj ustment Procedure 66 Front Panel Voltage and Current Calibration 1 Un secu re t he p ower su ppl y. T o c alibrate the voltage a nd curre nt, you must unsec ure the power supply accord ing to the pro cedure given on page 62 . 2 Disconnect all loads from the power supply and c onnect a [...]

Chap ter 3 Ca libr atio n Pro cedu res General Calibration/A dj ustment Procedure 67 3 6 Read the D VM and change th e low voltage value on the d isplay to ma tch the measured voltage. For exam ple, if th e DVM re ading is 0.4500 V , adjust the voltag e to 0.45 00 V using the knob and resolution sele ction key s. 7 Pressing (C alibrate) key saves t[...]

Chap ter 3 Ca libr atio n Pro cedu res General Calibration/A dj ustment Procedure 68 10 Read t he DVM and change the high vo ltage value on th e display to ma tch the measured voltage. For examp le, if the DVM reads 1 9.495 V , adjust the voltage to 1 9.495 V using the knob and arrow keys. 11 Pressing (Ca librate) key s aves the new voltage calibr [...]

Chap ter 3 Ca libr atio n Pro cedu res General Calibration/A dj ustment Procedure 69 3 I f t h e c a l i b r a t i o n f a i l s , a ‘ ‘ O V P C A L FA I L ’ ’ m e s s a g e a p p e a r s f o r o n e s e c o n d a n d the display shows the ‘‘CAL S ETUP 2’’ for OVP ca libration ag ain. 13 Select th e low current ca libration po int. [...]

Chap ter 3 Ca libr atio n Pro cedu res General Calibration/A dj ustment Procedure 70 17 Pressing the ‘‘Calibr ate’’ key saves the change and select s the high current c alibration point. ( ‘‘I HI 6.900 A’’ - E3634A model) I f t h e e n t e r e d n u m b e r i s w i t h i n a n a c c e p t a b l e r a n g e , a n ‘ ‘ E N T E R E [...]

Chap ter 3 Ca libr atio n Pro cedu res A borting a C alibration in Progress 71 3 20 Pressing the ‘‘Calibrat e’’ key sa ves the new OCP calibration constants and return to the calibrat ion mode. A ‘‘CAL IBRA TING’’ message appears for several seconds to indic ate that the OCP ca libration is prog ressing and new OC P ca libration con[...]

Chap ter 3 Ca libr atio n Pro cedu res Calibration Rec ord for A gil ent E3633A /E3634 A 72 Calib ration Rec ord for Agile nt E36 33A/E3634A Step Calibration Description Meas ur em e nt Mod e (DV M) Supply Being Adjusted 1 Unsecure the power suppl y (see page 62). 2 Turn on ‘‘CAL MODE’’ (hol d down ‘‘Calibrate’’ a nd ‘‘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 3633A and E36 34A. The e rrors listed ar e the most likely errors to be encounter ed during ca libration and adju stment. A mor e co mplete list of e rror messag es a nd description s is contained in [...]

Chap ter 3 Ca libr atio n Pro cedu res Error Messages 74 Calibration Error Messages Error Error Messages 701 Cal security disabled by jumper 702 Ca l se cure d 703 Inv ali d sec ure code 704 Secure cod e to o l ong 705 Ca l abort ed 708 Cal outp ut disabled 712 Ba d DA C ca l da ta 713 Ba d re adba ck c al data 714 Bad OVP cal data 715 Bad OCP cal [...]

Chap ter 3 Ca libr atio n Pro cedu res A n Example program of Excel 97 for Ca libration 75 3 An Exam ple pro gram o f Excel 9 7 for Cali bration This section co ntains an Exc el Macro s (Visual Basic Ò for App lications) progra m for ca libration ove r the GPIB interfa ce. This progr am mak es software adjustments to the E 3633A power supply using[...]

Chap ter 3 Ca libr atio n Pro cedu res A n Example progra m of Excel 97 for Ca libration 76 If DacErrorCorrection = False Then ClosePort Exit Sub End If shunt = 0.001 'Change the current shunt value UserAnswer = MsgBox("Voltage & OVP calibration. Connect the output to the DMM", vbYesNo + vbQuestion, "E3633A Calibration"[...]

Chap ter 3 Ca libr atio n Pro cedu res A n Example program of Excel 97 for Ca libration 77 3 ActiveCell.Value = "End Middle Current Calibration" StartCalibration CurrentMax, False, shunt 'Set output to maximum current cal ActiveCell.Value = "End Maximum Current Calibration" OVPandOCPCalibration False Message = SendSCPI(powe[...]

Chap ter 3 Ca libr atio n Pro cedu res A n Example progra m of Excel 97 for Ca libration 78 Private Function InitializeDevice() SendSCPI power, "*Cls" SendSCPI DMM, "*Rst" 'Set power-on condition for DMM SendSCPI power, "*Rst" 'Set power-on condition for power supply End Function Private Function CheckError(E[...]

Chap ter 3 Ca libr atio n Pro cedu res A n Example program of Excel 97 for Ca libration 79 3 Error = viWrite(device, ByVal commandString, Len(commandString), actual) If InStr(commandString, "?") Then Error = viRead(device, ByVal ReadBuffer, 512, actual) ReturnString = ReadBuffer crlfpos = InStr(ReturnString, Chr$(0)) If crlfpos Then Retur[...]

Chap ter 3 Ca libr atio n Pro cedu res A n Example progra m of Excel 97 for Ca libration 80 Private Function DacErrorCorrection() As Boolean Dim Message As String SendSCPI power, "Output On" 'Turn on the power supply ou tput SendSCPI power, "Cal:Dac:Error" For I = 1 To 27 delay 1 ActiveCell.Value = "Waitting for "[...]

Chap ter 3 Ca libr atio n Pro cedu res A n Example program of Excel 97 for Ca libration 81 3 If bVolt Then 'Send the measured voltage value to the power supply SendSCPI power, "Cal:Volt:Data " & Str(DMMdata) Else 'Send the measured current value to the power supply SendSCPI power, "Cal:Curr:Data " & Str(DMMdata[...]

Chap ter 3 Ca libr atio n Pro cedu res A n Example progra m of Excel 97 for Ca libration 82 Declaration f or Window s 95/NT 4.0 Declare Function viOpenDefaultRM Lib "visa32.dll" (instrumentHandle As Long) As Long Declare Function viOpen Lib "visa32.dll" (ByVal instrumentHandle As Long, _ ByVal viDesc As String, ByVal mode As Lon[...]

4 Theory of Op eration[...]

84 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 trouble shooting. It is a ssumed in the following discu ssions that you are familiar with the op erating a nd progra mming instruc tions presen[...]

Chapter 4 Theory of Operation Block Diagram Overview 85 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 earth re ference d circuitr y . All powe r mesh and c ontrol circ uits, display circuit, and digi t[...]

Chapter 4 Theory of Operation Block Diagram Overview 86 Block Diagram[...]

Chapter 4 Theory of Operation A C Input and Bias Supplies 87 4 AC Input a nd Bia s Supplie s Referrin g to the schema tic shown on pag es 129 a nd 130, the ac mains ar e connec ted by a f used power module. This module incorpo rates the functions of mains connection , fusing, and line voltage selection (100/11 5/230 V ac ). The line voltag e selec [...]

Chapter 4 Theory of Operation Floating Logic 88 Floating Logic Referrin g to the schema tic shown on pag e 132, the floating common logi c controls opera tion of the entire instrume nt. All output function s and bus command interpretation is performe d in the main contro ller U19. The front panel and the earth refer enced logic operate as slaves to[...]

Chapter 4 Theory of Operation Floating Logic 89 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 ra te is selecte d [...]

Chapter 4 Theory of Operation D-to-A Converter 90 D-to-A Converte r Referrin g to the sch ematic shown on pa ge 131 , all r eferenc e v oltages of power circuits are der ived from the internal voltag e reference of system DAC U22 . The system DA C tra ck/hold a mplifier outpu ts are use d to p rovide c ontrollable referen ce voltages to power circu[...]

Chapter 4 Theory of Operation A -to-D Converter 91 4 A-to-D Conve rter Referrin g to the sc hematic sho wn o n p age 131 , the a nalog-to-d igital conv erter (ADC) is use d to change dc voltag es into digital infor mation. The cir cuitry consists of an in tegrator a mplifier (U2 5 and U2 8), curr ent ste ering switch U32 , resistors (R72, R73, and [...]

Chapter 4 Theory of Operation Power M esh and Control 92 Power Mes h and Co ntrol Refer to the sc hema tics shown on pag e 129. For the power mesh and control ci rcuit, the pre regula tor which is controlle d by the phase contro l circuits is add ed ahea d of the series pa ss transistor to minimize the power dissipa ted at the series pass transisto[...]

Chapter 4 Theory of Operation Power M esh and Control 93 4 T wo erro r amplifie rs are includ ed in a CV/CC su pply , one for controllin g output voltage , the other for con trolling output cu rrent. Since the constant vo ltage amplifier tends to ach ieve ze ro output im pedanc e and a lters the output c urrent wheneve r the load re sistance ch ang[...]

Chapter 4 Theory of Operation Earth-Referenced Logic 94 Earth-Re ferenc ed Logic Referrin g to the schema tic shown on pag e 133, the earth refere nced logic circuits schem atic provides all rea r panel input/output capa bility . Micropro cessor U1 ha ndles GPIB (IEE E-488) control throug h bus interfac e chip U6 and bus re ceive r/drive r chips U3[...]

5 Service[...]

96 Service This chapter discusses the pr ocedure s involved for returning a failed powe r supply to Agile nt T echn ologies f or service or re pair. Sub jects cove red includ e the following: • Operating Checklist, on p age 97 • Types of Serv ice Ava ilable, star ting on page 98 • Repac king for shipme nt, on page 9 9 • Electrosta tic Disch[...]

Chap ter 5 Ser vic e Op erat ing Chec klis t 97 5 Operati ng Che cklist Before re turning yo ur power supply to Agilent T echn ologies for se rvice or repair c heck the follo wing items: Is the Power Supply Inoperative? V erify that the ac power cord is conn ected to the powe r supply . V erify that the front-pane l power switch is d epressed . V e[...]

Chap ter 5 Ser vic e Types of S ervice A vailable 98 Types of Service Av ailabl e If your power supp ly fails within three yea rs of ori ginal p urchase , Agilen t T echn ologies will re pair or re place it free of charge . If yo ur unit fails a fter y our three y ear warranty expires, Agilent will repa ir or replac e it a s a v ery competitiv e pr[...]

Chap ter 5 Ser vic e Repacking for Shipment 99 5 Repa cking for Shipme nt For the Expr ess Exchan ge Ser vice descri bed on the previ ous page, retu rn you r failed Agi lent E363 3A or E36 34A to the de signated Ag ilent Serv ice Cente r using the shipping c arton of the ex change unit. A shipping la bel will be supp lied. Agilent will no tify you [...]

Chap ter 5 Ser vic e Electrostatic Discharge (ESD) Pr ecautions 100 Electro stat ic Dis charge (ESD) Precaut ions Almost al l elec trical c omponents can b e dama ged by ele ctrostatic discharg e (ESD) d uring h andling. Compone nt dama ge ca n occ ur at e lectrostatic dis charge volt ages as low as 50 volt s. The following guide lines will help p [...]

Chap ter 5 Ser vic e To Disconnect the Output Using an External Relay 101 5 To Disco nnect t he Output Using a n Externa l Rela y When the o utput o f the power supply i s turn ed off, it is imple mented b y se tting the output to 0 volts an d 0.02 am ps. This gives a ze ro output voltag e without actually di sconnectin g the output. T o disco nnec[...]

Chap ter 5 Ser vic e Troubleshooting Hints 102 Troublesh ooting Hints This section provid es a brief ch eck list of comm on failure s. Before troubleshoo ting or r epairing the power supply , make sure that the failure is in the instr ument r athe r t han any ext ernal connect ions. Also mak e s ure that t he instrument is accu rately calibra ted. [...]

Chap ter 5 Ser vic e Troubleshooting Hints 103 5 Bias Supp lies Problem s Check tha t the input to the voltag e regul ators of the bias supp lies is at least 1 V greate r than their outpu t. Circuit failur es can cau se heavy lo ads of the bias supplie s whic h may pull down the regula tor output voltag es. Check the voltages o f bias supplie s as [...]

Chap ter 5 Ser vic e Self-Test Procedure s 104 Self -T est Pr ocedur es Pow er-O n S elf -T est Each time the power su pply is powered on, a set of sel f-tests are performe d. These tests check that the minimum set of lo gic an d mea surement hardware are functioning properly . The power-on self-test perform s ch ecks 601 through 604 and 624 t hrou[...]

Chap ter 5 Ser vic e Self-Test Procedure s 105 5 606 Rundown gain out of range This test check s the nominal gain between t he integratin g ADC and the U19 on-ch ip ADC. The nom inal gain is c hecked to ±10% toler ance. 607 Rundown too noisy This test check s the gain re peatability between the integratin g ADC and the U19 on-ch ip ADC. The ga in [...]

Chap ter 5 Ser vic e Self-Test Procedure s 106[...]

6 Replaceable Parts[...]

108 Replace able P arts This c hapter conta ins in formation orde ring replac ement parts for your power supply . The parts lists are di vided into the foll owing group s: • E3633 -6000 2 Main PC Assembly, starting on page 109 • E3634 -6000 2 Main PC Assembly, starting on page 109 • E3633 -6000 3 Front-Panel Display PC Assembl y, on pag e 119[...]

E3633/E3634-60002 Main PC Assembly Reference Designator Agilent Part Number Qty Part Description Mfr. Code Mfr. Part Number C1 0180-4228 1 CAP-FXD 47uF +-20% 10V TA 12340 T491D476M010AS C2-6 0160-6497 45 CAP-FXD 0.1uF +-10% 50V CER X7R 12340 C1206C104K5RAC C7 0180-3751 4 CAP-FXD 1uF +-20% 35 V TA 12340 T491B105M035AS C8-9 0160-6497 CAP-FXD 0.1uF +-[...]

Reference Designator Agilent Part Number Qty Part Description Mfr. Code Mfr. Part Number C48 0160-6736 CAP-FXD 0.01uF +-10% 50V CER X7R 12340 C1206C103K5RAC C49 0160-6497 CAP-FXD 0.1uF +-10% 50 V CER X7R 12340 C1206C104K5RAC C50 0160-5954 3 CAP-FXD 220pF +-5% 50V CER C0G 12340 C0805C473K5RAC C51 0160-6497 CAP-FXD 0.1uF +-10% 50V CER X7R 12340 C1206[...]

Reference Designator Agilent Part Number Qty Part Description Mfr. Code Mfr. Part Number C103-104 0160-4183 2 CAP-FXD 1000pF +-20% 250V PPR-MET 11892 PME271Y410M C105 (3633A) (3634A) 0180-4235 0180-3595 CAP-FXD 470uF +-20% 50 V AL-ELCTLT CAP 220UF 100V 20% AL 12599 00779 KME50VB471M12X20LL UPR2A221RH C106 (3633A) (3634A) 0160-4535 0160-5755 CAP-FXD[...]

Reference Designator Agilent Part Number Qty Part Description Mfr. Code Mfr. Part Number CR37 1901-1227 DIODE-SWITCHING 75V 200MA 6NS TO-236 02910 BAS16 CR38 1906-0291 DIODE-DUAL 70V 100MA TO-236AA 02037 BAV99LT1 CR39 1884-0332 1 THYRISTOR-SCR TO-220AB VRRM=200 02037 MCR264-00 CR40 1901-1227 DIODE-SWITCHING 75V 200MA 6NS TO-236 02910 BAS16 CR41-42 [...]

Reference Designator Agilent Part Number Qty Part Description Mfr. Code Mfr. Part Number R13 0699-1386 2 RESISTOR 5.62K +-1% .125W TKF TC=0+-100 00746 MCR18-F-X-5621 R14 0699-1381 2 RESISTOR 3.48K +-1% .125W TKF TC=0+-100 00746 MCR18-F-X-3481 R17-18 0699-1415 7 RESISTOR 100 +-1% .125W TKF TC=0+-100 00746 MCR18-F-X-1000 R19 0699-1425 3 RESISTOR 261 [...]

Reference Designator Agilent Part Number Qty Part Description Mfr. Code Mfr. Part Number R66 0699-1423 RESISTOR 215 +-1% .125W TKF TC=0+-100 00746 MCR18-F-X-2150 R67 0699-1383 1 RESISTOR 4.22K +-1% .125W TKF TC=0+-100 00746 MCR18-F-X-4221 R68 0699-1379 1 RESISTOR 2.87K +-1% .125W TKF TC=0+-100 00746 MCR18-F-X-2871 R69 (3633A) (3634A) 0699-1404 0699[...]

Reference Designator Agilent Part Number Qty Part Description Mfr. Code Mfr. Part Number R110 (3633A) (3634A) 0699-3223 0699-5409 RESISTOR 45.3K +-0.1% .125W TF TC=0+-25 R-C 17.4K 0.1% 1/8W 02499 09891 W1206-R-03-45R3KB RN73E2B1742B R111-112 0699-3577 2 RESISTOR 140K +-0.1% .125W TF TC=0+-25 02499 W1206-R-03-1403B R113 0699-1318 RESISTOR 1K +-1% .1[...]

Reference Designator Agilent Part Number Qty Part Description Mfr. Code Mfr. Part Number R138 0699-1385 RESISTOR 5.11K +-1% .125W TKF TC=0+-100 00746 MCR18-F-X-5111 R139 0699-1394 RESISTOR 14.7K +-1% .125W TKF TC=0+-100 00746 MCR18-F-1472 R140 (3633A) (3634A) 0699-1904 0699-2489 1 RESISTOR 1.62K +-0.1% .125W TF TC=0+-25 R-C 10K 0.1% 1/8W 01542 0249[...]

Reference Designator Agilent Part Number Qty Part Description Mfr. Code Mfr. Part Number U18 1990-1659 OPTO-ISOLATOR LED-PTRIAC IF=50MA-MAX 01542 MCP3020Z U19 1821-1479 1 IC 16-BIT MCU I/O TIMER 01542 N80C196KB U20 1820-8907 1 IC-ASIC GT-ARY 600 GATES CMOS SCX6200 01542 SCX6206AK0 U21 1820-5937 1 IC FF CMOS/AC D-TYPE POS-EDGE-TRIG 01542 74AC74SC U2[...]

Reference Designator Agilent Part Number Qty Part Description Mfr. Code Mfr. Part Number C301-302* 0160-5959 2 CAP-FXD 33PF 5% 50V CER 12340 C0805C330J5GAC C303* 0160-5967 1 CAP-FXD 100PF 5% 50V CER 12340 C0805C101J5GAC C304* 0160-4535 1 CAP 1UF 50VDC CER 10% 12340 C330C105K5R5CA C305 0180-4575 1 CAP-FXD 47uF +-10% 20V TA 12340 T491D476K020AS CR301[...]

E3633-60003 Front-Panel Display PC Assembly Reference Designator Agilent Part Number Qty Part Description Mfr. Code Mfr. Part Number C1-3 0160-6497 14 CAP-FXD 0.1uF +-10% 50 V CER X7R 12340 C1206C104K5RAC C4-5 0180-3751 2 CAP-FXD 1uF +-20% 35 V TA 12340 T491B105M035AS C6 0160-5945 3 CAP-FXD 0.01uF +-10% 50 V CER X7R 12340 C0805C103K5RAC C7-8 0160-6[...]

E3633-60011 Front Frame Assembly Reference Designator Agilent Part Number Qty Part Description Mfr. Code Mfr. Part Number E3633-40001 E3634-40001 1 WINDOW PLATE 01542 E3633-40001 E3633-40002 E3634-40002 1 KEY PAD 01542 E3633-40002 E3632-40003 1 KNOB 01542 E3633-40003 E3632-40004 1 FRONT FRAME 01542 E3633-40004 E3633-60007 E3634-60007 1 BINDING POST[...]

Manufacturer’s List Mfr Code Manufacturer’s Name Manufacturer’s Address 07221 SUPERTEX INC SUNNYVALE, CA, U.S.A 00746 ROHM Corp Kyoto, Japan 00779 NICHICON AMERICA CORP Schaumberg, IL, U.S.A 00830 KYOCERA AMERICA, INC SAN DIEGO, CA, U.S.A 00901 UNION CARBIDE CORP DANBURY, CT, U.S.A 01542 Agilent Div. 01 San Jose Components San Jose, CA, U.S.A[...]

Chapter 6 Repl aceable Pa rts Manufacturer’s List 122[...]

7 Backdating[...]

124 Backdating This c hapter norma lly c ontains information ne cessary to adapt this manual to instruments not dir ectly cov ered by the curren t content. At this printing , however, the manua l applies to all in struments. There fore, no informa tion is included in this chapter.[...]

8 Schem atics[...]

126 Schem atics This chapter contains disasse mbly dra wings, compon ent locator dr awings, and schem atics for the powe r supply . The block dia gram is also shown in chapter 4. The blo ck diag ram and schema tics support the theory of operation in chapter 4. • Mec hanica l D isas sem bly, on page 127 • Com ponen t L ocat or ( Main Board E36 3[...]

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Copyright © 1998 - 2000 Agilent T echnologies All Ri ghts Res erved. Printing History Edit ion 1, Novem ber 1998 Edition 2, April 2000 New editions are comple te revisions of the manual. Update pac kages, which are issued between e ditions, may contai n addi tional information and repl ace- ment pages which you merge int o the m anual. The dates o[...]