Manuel d'utilisation / d'entretien du produit 6628A du fabricant Agilent Technologies
Aller à la page of 123
OPERATING MAN UAL MULTIPLE OUTPUT LINE AR SYSTEM DC POWER SUPPLY A GILENT MODELS 6625A, 6626A , 6628A , and 6629A A gilent Part No 06626- 90001 Agilent M odel 6625A, Serial s 3210 A-00664 and A bove* .
2 CERTIFICATION Agilent Technologies certifies that this pr oduct met its published specifications at time of shipment from the factor y. Agilent Technologies further cer tifies that its calibration m.
3 SAFETY SUMMARY The followi ng gener al safety p recauti ons must be obser ved during all pha ses of opera tion, service, and repair of this instrument. F ailure t o comp ly with th ese precau tions or with specific warnin gs elsewhere in this manual violate s safety standards of design, manufa cture, a nd i ntended us e of the instrument.
4 SAFETY SUMM A RY (continued) GENERAL Any LEDs us ed in this prod uct are Clas s 1 LED s as pe r IEC 825-1. ENVIRONMENTAL CONDITI ONS This ins trume nt is inte nded f or indoor use i n an inst allati on cate gory II, pollution de gre e 2 envi ronme nt.
5 DECLARATION OF CONFORMITY according to ISO/IEC Guide 22 an d EN 45014 Manufa cture r’ s Na me: Agilent T echno logies Manufactu rer’ s Address: 150 Green Pond R oad Rockaway, New Jersey 07866 U.
6 WHAT THIS MANUAL CONTAINS It contains infor mation relating to the in stallation, ope ratio n, and programming of these s upp lies as outlined belo w. Maintenan ce and troublesh ooting i nstructi ons are given in a separate Servi ce Manual (Agile nt Part No.
7 Table Of Contents 1 General Information Introduction ........................... . ....................................................................................................................... 11 Safety Considerations ................... .
8 Table Of Contents (co nti nue d) Positive and Negative Voltag es.............. ............................................................................... .................... 51 Remote Voltage Sensing............ ......... .....................
9 Table Of Contents (co nti nue d) Local Control Of Output Functions.............. ... .............................................................................................. 85 General............... ............ ................ .............
.
General In formation 11 1 General Information Introduction This chapter contains a general description of your power supply as well as its performance specifications. Information about options, acces sories, and GP-IB cables is also provided. This m anual describes the Ag ilent 6625A, 6626A , 6628A, and Agi lent 6629A power su pplies.
General Information 12 Accessorie s 10833A GP-IB cable, 1 m (3.3 ft) 10833B G P-IB cable, 2 m (6.6 f t) 10833C GP- IB cable, 4 m (13.2 f t) 10833D GP-IB ca ble, 0.
General In formation 13 The power supplies allow up to a 10 v olt sense lead drop. This feature m akes them ideal for test system applications where remote sensin g is us ed. The output voltage an d current for any output can be monitored w ith the front panel display .
General Information 14 Basic Operation Figu re 1-2 is a block diag ra m that ill ustrat es the ma jor assem blies contain ed with in th e power su pply. As shown in the figure, each supply includes a power transf ormer, two or m ore output boards, a GP-IB boa rd, and fron t panel (display an d contro l keys).
General In formation 15 Output Boards The outpu t boards are lin ear dc power su pplies. Each isolated ou tput operating bou ndary cu rve is sh own in F igure 1-1. The ac input to each ou tput board is rectified an d applied to a regulator circuit. Each output board em ploys series regulation techniques.
General Information 16 Output response time : Beginning at the time the power su pply has finished processing a VSET command (change output volta ge), the maxi mum time for the outpu t vo ltage to settle to within a settling b a nd about the final val ue from any specifi ed operating point.
General In formation 17 Table 1-2. Specifications (continued) Source Effect: Voltag e 0.5 mV 0.5 mV 0.5 mV 0.5 mV + Curren t 0.005 mA 0.005 mA 0.01 mA 0.01 m A Programming A ccuracy: Note: The programmi ng accuracy specifications may degrade slightly when the un it is subjected to an RF f ield equal to or greater than 3 v olts/meter.
General Information 18 Table 1-3. Supplemental Ch aracteristics (continued) Output Power 25 Watt Output 50 Watt Output Output Ra nge Lo Ra nge Hi Range Lo Ra nge Hi Range Output Vol ts 0-7 V 0-50 V 0-16 V 0-50 V Output Am ps 0-15 mA 0-500 mA 0-200 mA 0-2 A Temperature Coeff icient-M easurement: Voltage (0 .
General In formation 19 Table 1-3. Supplemental Ch aracteristics (continued) High Line Inrush Cur rent: 100 V O pt 120 V Opt 220 V Opt 240 V Opt Peak Valu e 85 A 85 A 50 A 50 A rms Value 6.3A 5.7 A 3.0 A 3.0 A Fus e Rating 8 A 8 A 4 A 4 A GP-IB Interface Capabilitie s: SH1.
General Information 20 Table 1-3. Supplemental Ch aracteristics (continued) Weight: Agilen t 6625A, 6628A Agilen t 6626A, 6629A Net 15.5 kg (34 lbs.) 17.7 kg (39 lbs.) Shippi ng 20. 8 kg (46 lbs.) 23 kg (51 lbs.) Load Cross Regulation: Voltag e 0.25 mV 0.
General In formation 21 Figure 1-4. CV Operation w ith Capacitive Load, Stabilit y Graph for all Outputs.
General Information 22 Figure 1-5. Out put Noise (Typical) CC M ode Figure 1-6. Out put Noise (Typical) C V Mode.
General In formation 23 Figure 1-7. Output Impedance (Typical) G raph (See Supplemental Characte ristics).
.
Installation 25 2 Installation Introduction This chapt er contai ns instru c tions f or checking and moun ting your pow er supply, conn ecting your supply to ac power, converting it f rom one line voltage to another, and connecting the GP-IB cable.
Installation 26 Figure 2-1. Ou tline Diagram Input Power Requirements You can operate this pow er supply from a nom inal 100 V, 120 V, 22 0 V or 240 V s ing le phase power s ource at 47 to 66 Hz.
Installation 27 Figure 2-2. Rear Panel Detail ( A gilent 6626 A Shown) Table 2-2 Line Fuses Line Voltage Fuse Needed Agilent Part Number (for ¼ X 1¼ in . fuses only) 100/120 V 8AM 2110-03 42 220/240 V 4AM 2110-00 55 Note: All fuses are rated for 250 V.
Installation 28 Power Cord The pow er supply is sh ipped from the fact ory with a pow er cord that has a pl ug appropriat e for y our location. Figu re 2-4 shows th e standard configurati on of plu gs used by Agilent Techn ologies.
Installation 29 FIRE HAZARD . Make sure the replacement fuse is one of the same type (size) and rating (amps) that is consiste nt with the volta ge level you are o p erating at. Do not use a s ubstitute fuse; use a fuse with the same Agile nt Part number li sted in Table 2 -2.
.
Getting Starte d 31 3 Getting Started Introduction This chapter is inte nded for the first time user o f the supply. It provides four main discussions: • Front Panel C ontrols an d Indicators • Tu.
Getting Starte d 32 Figure 3-1. A gilent 6626 A Front Panel Table 3-1. Controls and Indicato rs Number Controls/Indicators Description Page 1 LCL key Ret urns power su pply t o local mode (un less local lockout has been receiv ed via GP-IB). Also, turns the power s upply’ s displ ay on if it was turned of f via the GP-IB.
Getting Starte d 33 Table 3-1. Controls and Indicato rs (continued) Number Controls/Indicators Description Page 4 (cont) UNR - Indicates that the selected output channel is unregulated; i.e., it is not reg ulated by CV or CC contro l loops. 4-4 OCP ENBLD - Indicates that the overcurrent protection function for the selected channel is enabled.
Getting Starte d 34 Table 3-1. Controls and Indicato rs (continued) Number Controls/Indicators Description Page 7 Output Contro l K eys (T hese twel ve keys a r e output dependent). OUTPUT S ELECT - Selects o ne of the output channels for local contro l or display.
Getting Starte d 35 Table 3-1. Controls and Indicato rs (continued) Number Controls/Indicators Description Page 7 (cont) Ñ CURRE NT - Increases the selected output curren t by an LSB and then at a faster rate as the key is k ept pressed, or af ter the RANGE V/I key ha s been p ressed , sets the selected output to the high cu rrent range.
Getting Starte d 36 Turning On Your Supply The follow i ng paragraphs des cribe the pow er-on sequence which includes a self test of m ost of t he power su pply’ s circu its. Befo re yo u turn o n your sup ply, make sure tha t: • The line module on the rear panel is set to match your input line voltage.
Getting Starte d 37 Figure 3-4. T ypical Display at Pow er-On Self-Test Er rors If the supply fails the po wer-on self-test, all po w er suppl y outputs will remain disab led (off) and the display will indicate the type of failure and the output channel on which it occurred.
Getting Starte d 38 Voltage Test 1. Set th e voltage of the select ed output t o 10 V by press ing: VSET 1 0 ENTER 2. Check that th e display reads approxim ately 10 V and 0 A and the C V annunciat or is on i ndicating that th e supply is in the constant voltage mode o f operation.
Getting Starte d 39 6. Check that the display reads approximately 0 v olts and the programmable current limit value. Also, check that the fron t panel CC an nunciator is on ind icating t hat the output is i n the consta nt current mode o f op eration.
Getting Starte d 40 Enter/Output St atements The programm ing st atements you u se to operate y our supply from remote depend on y o ur co mputer and its language. In particular, you n eed to know the statements your computer uses to output and en ter information.
Getting Starte d 41 Sending a Remote Command To send the power supply a remote command, combine your computer’ s output statement with the GP-IB interface select code, the GP- IB device addres s, and f inally, th e power supply co mmand.
Getting Starte d 42 Each of these co mmands is briefl y discussed in t he following paragrap hs to help you ge t started in pro gramming your supply. To know more about these co mmands, refer to Chapter 5. The VRSET and IRSET commands select the range the power supply operates in.
Getting Starte d 43 Output On/ Off. You can turn a specif ied output on or of f. Indivi dual outputs can be controlled as sh own below. To turn off output 1, send: OUTPUT 705; ’ ’ OUT 1,0" Wh.
.
Output Connections and Operating Information 45 4 Output Connections and Operating Information Introduction This chapter explains how to make conn ections to the output terminals located on the rear of your power supply.
Output Connections and Operating Information 46 Operating Quadrants Figures 4-2A and 4- 2B show the operati ng locus of your pow er supply in three quadran ts. The area in qu adrant 1 s hows th e operating locus defined by t he voltage and curren t settings of each output.
Output Connections and Operating Information 47 Figure 4-3 shows the c urrent sink characteristics lo wer voltages in greater d etail. The area in quadrant 4 illustrate s the reverse polarity diode ch aracteristics of each output. Do not operate any output with reverse-voltage currents that are greater than the ma ximum rating o f the output.
Output Connections and Operating Information 48 The readback res oluti on of th e 25 watt ou tputs when metering voltag e s of 7 v olts or below , will be 483 µ V.
Output Connections and Operating Information 49 UNREGUL A T ED OUTPUT -- the supply informs the user when outpu t regulation is not guaranteed. This can occur when attem pting to si nk excess ive current s below 4 vol ts on 25 W ou tputs and 2 volt s on 50 W ou tputs or when operati ng ou tp uts in parallel.
Output Connections and Operating Information 50 Note To prevent trip p ing of the overvoltage circ uit, pick a wire size sufficient to handle the FU LL ou tput current of the unit no matter what the intended load curren t or current limit setting.
Output Connections and Operating Information 51 Figure 4-4. Optimum Hookup for Multiple Loads, Local Sensing Note When a load is connected throug h relay or switch contacts, contact bounce may activate the overvoltage circuit and shut down th e supply.
Output Connections and Operating Information 52 Figure 4-5. Remote Voltage Sen sing The max imum voltag e availabl e at the pow er supply output termin als during rem ote sensing (see Figure 4-6) is 50.5 volts . This allo ws the sum of the volta ge acro ss both load lead s to equal 10 vo lts maximum.
Output Connections and Operating Information 53 Figure 4-6. Total Allowable Load Lead Voltage Drop (total of both leads) w ith Remote Sensing Output Noise Considerations Any noise picked up on the sense leads will appear at the supply’ s o u tput and may adversely affect CV lo ad regulation.
Output Connections and Operating Information 54 Open Sense Lead s The sense leads are part of the su pply’ s feedback path. Connect them in such a way so th at they do not inadvertently become open circuited. The power supply includes protection resistors that reduce the eff ect of open sense leads during remote-sensing operatio n.
Output Connections and Operating Information 55 Figure 4-8. External T rigger Circuit Figure 4-9. Equivalent Internal O V Trigger Circuit Power Supply Protection Considerations Battery Charging If you.
Output Connections and Operating Information 56 Figure 4-10. Recommended Protection Circuit for Battery Charging Capacitive Load Limitation The programmable overvolta ge protection circuit can b e u sed to do wnprogram capacitive load s although it is p r i marily intended for us e as a protection feature as described on page 48.
Output Connections and Operating Information 57 Figure 4-11. Parallel Connections w ith Local Sensing CV Operation For CV operation, on e output m ust operate in CC mode an d the other outpu t must operate in CV mode.
Output Connections and Operating Information 58 CC Operation For CC operatio n, set the output vo ltages as outlined in CV operatio n (p age 57), or alternatively, pr o gram the volta ge settings of both outputs to the same voltage limit point.
Output Connections and Operating Information 59 Series Operation SHOCK HAZARD . Floating voltages must not exceed 240 Vdc. N o output term inal may be more than 240 Vdc f ro m ch assis groun d. Connec t in seri e s only o utp uts tha t have eq uivale nt curr ent rati ngs.
Output Connections and Operating Information 60 CC Operation For CC operation, th e current setting of each output must be programmed to th e desired operating cu rrent.
Output Connections and Operating Information 61 Voltage All series specifications referring to voltage are twice the single output specification except for progra mming resolution which is t he same as for a single output.
.
Remote Operation 63 5 Remote Operation Introduction Chapter 3 i ntrodu ced you to th e basics of remote operation an d provided a f ew sim ple examples usi ng a Series 200/300 computer as the GP-IB controller.
Remote Operation 64 the SRQ annuncia tor regardless of whether the cond ition that caused the service request conti nues to exist. T he service req ue st is also r e moved whe n you se nd the " CLR ’ ’ c omma nd (s e e page 7 6). Remote/Local .
Remote Operation 65 Power-On S ervice Request ( PON) The power supply can request service from the controller when the power is turned on . This request can be enabled or disabled by sending a PON comman d (see page 80). When th e request is enabled, the supply can generate an SRQ at power-on or when there is a momentary loss in power.
Remote Operation 66 Table 5-1. Power Supply Commands (continued) Command Header Output Channel Data Range (Fig. 5-2) Synta x Query present h ardware error ERR? --- See Table 5-8 Q1 Query fault registe.
Remote Operation 67 Table 5-1. Power Supply Commands (continued) Command Header Output Channel Data Range (Fig. 5-2) Synta x Store present output state STO 0-10 C2 Query preset status of ou tput STS? 1, 2, 3, 4 Q2 Perform self test on GP-IB interface TES T? .
Remote Operation 68 Figure 5-2 (Sheet 1 of 2). Syntax Forms For Power Supply Commands.
Remote Operation 69 Figure 5-2 (Sheet 2 of 2). Syntax Forms For Power Supply Commands.
Remote Operation 70 Table 5-2. Pow er Supply Queries Query Header (Note 7) Channel (Note 1) Response (Notes 5 and 6) Initial Value Sy ntax (Fig. 5-2) Voltage Setting VSET? 1,2,3,4 SZD.
Remote Operation 71 Initial Conditions Immediately after power on from the factory, the power supply automatically undergoes a self-test and sets all parameters to the values contained in Table 5-3. The values in the first part of th e table come from storage register 0 and were stored at the factor y.
Remote Operation 72 VSET 1,.45 If the output cha nnel is operating i n constant voltage mode (CV an nunciator on) the n t he actual volta ge is t he programmed voltage, but in CC mode of operation (C C annunciator o n), the p r o grammed volta ge i s the voltage li mit for that output.
Remote Operation 73 Current Programming To program the current, send t he outpu t channel an d the program med va lue in am ps. In th e e xam ple below, output 1 is programm ed to 15 mA.
Remote Operation 74 Output On/Off The OUT command disables /enables an outp ut channel of the po wer supply. It will not disturb an y other programmed function no r will it reset the protection circui ts. You can co ntrol individ ual o u tputs with the OUT command as sho wn below.
Remote Operation 75 Overcurrent Protection (OCP ) The OCP is a protection feature em plo yed by the pow er s upply to guard against excessive output currents. When the ou tput enters the + CC mode and th e OCP is enabled, the OCP circuit down programs the output voltage and disables the output.
Remote Operation 76 The Clear Command This command will return the power suppl y to its po wer-on state and all para meters are returned to their initial power-on values except for the following: 1. The store/recall registers are not cleared. 2. The pow er supply remai ns addressed t o liste n.
Remote Operation 77 Table 5-5. Bit Assignment for the Status, Astatus, Fau lt, and Mask Regi sters Bit Po sitio n 7 6 5 4 3 2 1 0 Bit We ight 128 64 32 16 8 4 2 1 Meaning CP OC UNR OT OV -CC +CC CV Wh.
Remote Operation 78 UNMASK 2,XXX where XXX specifies the numeric code (0 to 255) for the un masked conditions (see Table 5-5). If during operation , the output experie nces a ny of the previousl y unmasked cond itio ns, it will set the correspo nding bit(s) in its fault re gister.
Remote Operation 79 Service Request Generation When operating your supply, you ma y want it to request service e ver y time a fault or a progra mming error cond itio n occurs.
Remote Operation 80 The ability to generate ser vice requests can be enabled or disabled using t he SR Q co mmand as described b e lo w. To disable the service req uest capab ility, except for p o w e.
Remote Operation 81 Reprogra mming delay will dela y the onset of certain fault co nd itions a nd prevent the po wer supply from registerin g a fault when these conditions are true.
Remote Operation 82 Other Quer i es In the examples discussed above, y ou saw how to use queries for each function discussed. The following parag raphs describe oth er querie s whi ch were not prev iously co vered. ERROR Query . The power su pply can det ect both prog ramming and hardw are errors.
Remote Operation 83 To enable all outputs i n constant current mod e at turn o n send: DCPON 2 To d i sa ble all o utputs in co nstant c urrent mode at t urn-on se nd: DCPON 3 Table 5-8. E rror M essages Front Panel Response GP-IB Code Explanation NO ERROR 0 This is the res ponse to the ER R? query when there are n o errors.
Remote Operation 84 Table 5-8. E rror Messages ( continued) Front Panel Response GP-IB Code Explanation HDW ERR CH 1 11 Errors 11 through 14 refer to a specifi c output where th ere is an output error. Service is required. HDW ERR CH 2 12 Sa me as in Error #11.
Local Operation 85 6 Local Operation Introduction Chapt er 3 int roduced y ou to th e supply’ s fron t panel controls an d indicat ors to h elp you turn on the su pply and perform the checkout procedures that were g iven in that chapter. The following paragraphs describe h ow to use all of the front panel controls and indi cators.
Local Operation 86 Figure 6-1. Front P anel (Model 6626 A shown) Pressing t he ENT ER key will e nter the values disp layed for the functio n i ndicated, initiate tha t function, and return the display to the meterin g mode in which the measured o utput voltage a nd current for the selected outp ut are d isplayed.
Local Operation 87 The vo ltage step ke ys ca n also be used to c ha nge the voltage se tti ng. VSET Ñ VOLT or Ò VOLT then ENT ER The voltage can be set in the imm ediate execute mode.
Local Operation 88 Setting Overvoltage Protection Programm able overv oltage protection (OVP) gua rds your l oad against overvoltage by crowbarring an d downprogramming the power supply output if the programmed overvoltage setting i s exceeded.
Local Operation 89 For exam ple, you can change the addres s of y our supply to 10 by pressi ng: ADD R 1 0 E NT ER Displaying Error Messages The power su pply can detect both programm ing and hardware errors .
.
A lig nment Procedures 91 A Alignment Procedures Introduction This appendix contains the sof tware alignment procedures for the pow er supply. These supplies should be aligned tw ic e a year, or wh enever certain repairs are made (see Service Manual).
Alignment P rocedures 92 The program con tains embedded comments (iden tified by a leading asterisk {! } ) which explain variou s sections and procedures. To reduce key stroking, the prog ram m ay be short ened to a mi nimum num ber of lines by elim inating th ese comme nts.
A lig nment Procedures 93 After testing of a chan nel is co mpleted, the pro gram will check if any errors have o ccurred (the subprogra m is called in line 850 and perf orm ed in lines 3670 - 3780 ). If an error h as occurred, a m essage will be sent to the output devi ce (CRT).
Alignment P rocedures 94 Figure A-3 Figure A-4 Figure A-5.
A lig nment Procedures 95 Alignment Program 10 ! This program called "AL IGN_6626" w ill align 20 ! th e Agilen t6625A, 26, 28 an d 29A Power S upplies It 30 ! requi res an Agil ent3458A DMM and a four termin al 40 ! 0.1 ohm current shunt accu rate to +/-50 ppm 50 ! 60 ! May 06,l989 Rev A.
Alignment P rocedures 96 Alignment Program (continued) 530 ! -1 is reverse polarit y, this saves 540 ! reversing leads as sink channel 550 ! becomes the sou rce for other channel 560 Chan =1 ! Select .
A lig nment Procedures 97 Alignment Program (continued) 1050 ! 1060 ! 1070 ! 1080 DEF FNDci(I_ran ge) ! Fun ction to read cu rrent 1090 COM /Vm/ @Vm 1100 COM /Shun t/ Shunt_r 1110 IF I_range=2 THEN ! .
Alignment P rocedures 98 Alignment Program (continued) 1570 PRINT "Press CONTINUE w hen ready 1580 PAUSE 1590 Output_on 1600 ! 1610 Cal_v: ! 1620 Clear_screen 1630 PRINT " Cali brati n g th .
A lig nment Procedures 99 Alignment Program (continued) 2090 ! 2100 ! 2110 Cal_curren t: SUB C al_curren t(I_range) ! Subprogram t o cal current 2120 COM /Ps/ Ch an,Other_chan,@ Ps,Model$[7] 2130 ! 2140 IF I_range= .
Alignment P rocedures 100 Alignment Program (continued) 2610 Irlo=FNDci(I_range) ! Read low output curren t 2620 ! 2630 OUTPUT @Ps;"IRHI";Ch an ! Set high readback curren t 2640 REPEAT ! Wai.
A lig nment Procedures 101 Alignment Program (continued) 3130 PRINT "Calibratin g outpu t";Chan ;"";I_range;"A cu rrent sink readback" 3140 ! 3150 OUTPUT @Ps;"IRSET&.
Alignment P rocedures 102 Alignment Program (continued) 3650 ! 3660 ! 3670 Check _error:SUB Ch eck_error ! Subprog ram to ch eck for errors 3680 COM /Ps/ Chan,Oth er_chan,@Ps,Model$[7] 3690 Clear_scre.
Programming w ith a Series 200/3 00 Computer 103 B Programming With a Series 200/300 Computer Introduction The purpose of thi s appendix is to s erve as an in troducti on to programm ing y our power su pply wi th an HP S eries 200/300 computer using the BASIC langu age.
Programming with a Series 200/300 Computer 104 VOLTAGE AND CURRENT PROGRAMMING WITH VARIABLES You can use variables in a prog ram to represent data values in the dev ice commands. This is useful in applications that require changing the voltage and current values to differen t predetermined settings.
Programming w ith a Series 200/3 00 Computer 105 10 ASS IGN @Ps TO 705 20 OUTPUT @Ps;’ ’ VSET ?1’ ’ 30 ENTER @Ps; Vsl 40 OUTPUT @Ps; "ISET?1" 50 ENTER @ Ps;Isl 60 PRINT ’ ’ VO LT.
Programming with a Series 200/300 Computer 106 Service Reque st and Serial Poll The fault and mask reg isters, when used in conjunction with the service requ est and serial poll functions, allow you to select which conditions can cause computer interru pts.
Programming w ith a Series 200/3 00 Computer 107 Error Det ection The power su pply can recognize programm ing errors and can inform you wh en a programmin g error occurs. When a n error is detected, no atte mpt is made to execute the co mmand. Instead, a bit in the serial po ll register is set.
Programming with a Series 200/300 Computer 108 LINE 10: Assigns the I/ O path n ame to th e power supply . LINE 20: Declares a common block f or the I/O path name. LINE 30: Def ines int errupt on s oftkey depress ion and branch to error routin e. LINE 40: Idles o n soft key definition.
Command Summary 109 C Command Summary Introduction For conveni ence, a “quick reference” listing tabulating general command headers, and calibration command headers is shown at the beginnin g of Table C- 1 (page 110). (Note t hat calibrat ion comm ands are described i n detail i n Appendi x A.
Command Summary 110 Table C-1 Quick Refer ence Listing of Commands General Commands * * ** * ** ** ** * ASTS? < ch > CLR CMODE < 1 (on) or 0 (off ) > CMODE? DCPON < 1 (on) or 0 (off) &g.
Command Summary 111 Table C-2 Command Summary ASTS? < ch > Queries the accumulated status (ASTS) of the specified ou tput < ch > . The response (integ er 0-255) repres ents t he sum of the bin ary weight s of th e ASTS regi ster bits (s ee page 77).
Command Summary 112 Table C-2 Command Summar y (continued) ID? Queries the iden tification ( model number) of t he supply . (see page 82). IDATA < ch >, < Ilo > , < Ih i > Sends data to calibrate th e current setting circuits of the specified ou tput < ch >.
Command Summary 113 Table C-2 Command Summar y (continued) NIDAT < ch > . < Ilo > . < Ih i > Sends data to calibrate - cu rrent readback for the selected ou tput < ch > . This command must be sent af ter IRLN and IRHN commands.
Command Summary 114 Table C-2 Command Summar y (continued) ROM? Queries the revision date of the pow er supply’ s firmware. See service manual. SROM? Queries the revision date of the secondary ROM. See service manual. SRQ <X> Sets the causes for gen erating SRQ.
Command Summary 115 Table C-2 Command Summar y (continued) VMUX? < ch > , < x > Queries t he measure ment of the i nput < x > to t he analog multiplexer o n the specified output < ch > (see Appendix A). VOUT? < ch > Queries the measured outpu t voltage of the specifi ed output < ch > (see page 70).
.
Error Code s and M essages 117 D Error Codes and Messages Introduction This appendix describes the GP-IB error codes that can be readback to the con troller and the error messages that can be displayed on the power su pply’ s front panel. A brief explanation of each code and message is also given.
Error Codes and M essages 118 Table D-2. ERROR Respons es (continued) Error Cod e (ERR? query) Message (ERR key) Explanation 3 INVALID STR You sent a command the supply does not understand. Resend recognizable comm and. 4 SYNTAX ERROR You se nt a comman d with im proper syn tax.
Error Code s and M essages 119 Table D-2. ERROR Respons es (continued) Error Cod e (ERR? query) Message (ERR key) Explanation 18 C AL LOCKED Calibration was atte mpted with the calibration j umper on the GP-IB board in the lo cko ut position (See Section IV in t he Service Manual).
.
Manual Backdating 121 E Manual Backdating Introduction The backd a ting i nformation in t his chapter applies to units that ha ve the follo wing serial numbers: Agilent Model 6625A.
Agilent Sales and Support Office 122 A gilent Sales and Support Office For more in formation abo ut Agile nt Technologies test and m easurement produ cts, appli cations, s ervices, and fo r a curre nt sales office listi ng, visit our web site: htt p://www.
123 Manual Updates T he foll o w i n g updates h a ve bee n mad e to thi s m a nu a l s i nce the print revisio n i ndicated on the title p a ge. 2/01/00 A ll r e ferenc e s to HP have been ch a nged to Agil e nt. All r e fere nc e s to H P -I B have b e en c ha n ged to G P I B .
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Agilent Technologies 6628A c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Agilent Technologies 6628A - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Agilent Technologies 6628A, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Agilent Technologies 6628A va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Agilent Technologies 6628A, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Agilent Technologies 6628A.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Agilent Technologies 6628A. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Agilent Technologies 6628A ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
