Agilent-technologies 6625A Manuel d'utilisateur Page 1

OPERATING MANUAL MULTIPLE OUTPUT LINEAR SYSTEM DC POWER SUPPLY AGILENT MODELS 6625A, 6626A, 6628A, and 6629A Agilent Part No 06626-90001

Alignment Procedures100Alignment Program (continued)2610 Irlo=FNDci(I_range) ! Read low output current2620 !2630 OUTPUT @Ps;"IRHI";

Alignment Procedures101A

Alignment Procedures102Alignment Program (continued)3650 !3660 !3670 Check_error:SUB Check_error ! Subprogram to check for errors3680 COM /Ps/

Programming with a Series 200/300 Computer103BProgramming With a

Programming with a Series 200/300 Computer104VOLTAGE AND CURRENT PROGRAMMING WITH VARIABLESYou can use variables in a program to represent dat

Programming with a Series 200/300 Computer10510 ASSIGN @Ps TO 705

Programming with a Series 200/300 Computer106Service Request and Serial PollThe fault and mask registers, when used in conjunction with the se

Programming with a Series 200/300 Computer107Error DetectionThe p

Programming with a Series 200/300 Computer108LINE 10: Assigns the I/O path name to the power supply.LINE 20: Declares a common block for the

Command Summary109CCom

General Information111General InformationIntroductionThis chapter contains a general description of your power supply as well as its performance speci

Command Summary110Table C-1 Quick Reference Listing of CommandsGeneral Commands************ASTS? < ch >CLRCMODE < 1 (on) or 0 (off) &

Command Summary111Tabl

Command Summary112Table C-2 Command Summary (continued)ID? Queries the identification (model number) of the supply. (see page 82).IDATA < c

Command Summary113Tabl

Command Summary114Table C-2 Command Summary (continued)ROM? Queries the revision date of the power supply’s firmware. See service manual.SROM?

Command Summary115Tabl

Error Codes and Messages117DError

Error Codes and Messages118Table D-2. ERROR Responses (continued)Error Code(ERR? query)Message(ERR key)Explanation3 INVALID STR You sent a com

Error Codes and Messages119Table D

General Information12Accessories10833A GP-IB cable, 1 m (3.3 ft)10833B GP-IB cable, 2 m (6.6 ft)10833C GP-IB cable, 4 m (13.2 ft)10833D GP-IB ca

Manual Backdating121

Agilent Sales and Support Office122Agilent Sales and Support OfficeFor more information about Agilent Technologies test and measurement produc

123Manual Updates The following updates hav

General Information13The power supplies allow up to a 10 volt sense lead drop. This feature makes them ideal for test system applications whereremote

General Information14Basic OperationFigure 1-2 is a block diagram that illustrates the major assemblies contained within the power supply. As sh

General Information15Output BoardsThe output boards are linear dc power supplies. Each isolated output operating boundary curve is shown in Figure 1-1

General Information16Output response time: Beginning at the time the power supply has finished processing a VSET command (changeoutput voltage),

General Information17Table 1-2. Specifications (continued)Source Effect:Voltage 0.5 mV 0.5 mV 0.5 mV 0.5 mV+ Current 0.005 mA 0.005 mA 0.01 mA 0.01 mA

General Information18Table 1-3. Supplemental Characteristics (continued)Output Power 25 Watt Output 50 Watt OutputOutput Range Lo Range Hi Range

General Information19Table 1-3. Supplemental Characteristics (continued)High Line Inrush Current: 100 V Opt 120 V Opt 220 V Opt 240 V OptPeak Value 85

2 CERTIFICATION Agilent Technologies certifies that this product met its published specifications at time of shipment from the factory. Agilent Tec

General Information20Table 1-3. Supplemental Characteristics (continued)Weight: Agilent 6625A, 6628A Agilent 6626A, 6629A Net

General Information21Figure 1-4. CV Operation with Capacitive Load, Stability Graph for all Outputs

General Information22Figure 1-5. Output Noise (Typical) CC ModeFigure 1-6. Output Noise (Typical) CV Mode

General Information23Figure 1-7. Output Impedance (Typical) Graph (See Supplemental Characteristics)

Installation252InstallationIntroductionThis chapter contains instructions for checking and mounting your power supply, connecting your supply to ac po

Installation26Figure 2-1. Outline DiagramInput Power RequirementsYou can operate this power supply from a nominal 100 V, 120 V, 220 V or 240 V s

Installation27Figure 2-2. Rear Panel Detail (Agilent 6626A Shown)Table 2-2 Line FusesLineVoltageFuseNeededAgilent Part Number (for ¼ X 1¼ in. fusesonl

Installation28Power CordThe power supply is shipped from the factory with a power cord that has a plug appropriate for your location. Figure 2-4

Installation29FIRE HAZARD. Make sure the replacement fuse is one of the same type (size) and rating (amps) thatis consistent with the voltage level yo

3SAFETY SUMMARYThe following general safety precautions must be observed during all phases of operation, service, and repair of thisinstrument. Failur

Getting Started313Getting StartedIntroductionThis chapter is intended for the first time user of the supply. It provides four main discussions:• Fron

Getting Started32 Figure 3-1. Agilent 6626A Front Panel Table 3-1. Controls and Indicators Number Controls/Indicators Description Page 1

Getting Started33 Table 3-1. Controls and Indicators (continued) Number Controls/Indicators Description Page 4 (cont) UNR- Indicates that the se

Getting Started34 Table 3-1. Controls and Indicators (continued) Number Controls/Indicators Description Page 7 Output Control Keys(These tw

Getting Started35 Table 3-1. Controls and Indicators (continued) Number Controls/Indicators Description Page 7 (cont) Ñ CURRENT - Increases the se

Getting Started36 Turning On Your Supply The following paragraphs describe the power-on sequence which includes a self test of most of the powe

Getting Started37 Figure 3-4. Typical Display at Power-On Self-Test Errors If the supply fails the power-on self-test, all power supply outputs wi

Getting Started38 Voltage Test 1. Set the voltage of the selected output to 10 V by pressing: VSET 1 0 ENTER 2. Check that the display

Getting Started39 6. Check that the display reads approximately 0 volts and the programmable current limit value. Also, check that the frontpanel CC

4SAFETY SUMMARY (continued)GENERALAny LEDs used in this product are Class 1 LEDs as per IEC 825-1.ENVIRONMENTAL CONDITIONSThis instrument is intended

Getting Started40 Enter/Output Statements The programming statements you use to operate your supply from remote depend on your computer and it

Getting Started41 Sending a Remote Command To send the power supply a remote command, combine your computer’s output statement with the GP-IB inter

Getting Started42 Each of these commands is briefly discussed in the following paragraphs to help you get started in programming yoursupply. To

Getting Started43 Output On/Off. You can turn a specified output on or off. Individual outputs can be controlled as shown below. To turn off output

Output Connections and Operating Information 45 4 Output Connections and Operating Information Introduction This chapter explains how to make conn

Output Connections and Operating Information 46 Operating Quadrants Figures 4-2A and 4-2B show the operating locus of your power supply in thr

Output Connections and Operating Information 47 Figure 4-3 shows the current sink characteristics lower voltages in greater detail. The area in qua

Output Connections and Operating Information 48 The readback resolution of the 25 watt outputs when metering voltages of 7 volts or below, will

Output Connections and Operating Information 49 UNREGULATED OUTPUT -- the supply informs the user when output regulation is not guaranteed. This can

5 DECLARATION OF CONFORMITY According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014 Revision: B.00.00 Issue Date: Created on 11/24/2003 3:33 PM Doc

Output Connections and Operating Information 50 Note To prevent tripping of the overvoltage circuit, pick a wire size sufficient to handle the

Output Connections and Operating Information 51 Figure 4-4. Optimum Hookup for Multiple Loads, Local Sensing Note When a load is connected through

Output Connections and Operating Information 52 Figure 4-5. Remote Voltage Sensing The maximum voltage available at the power supply output

Output Connections and Operating Information 53 Figure 4-6. Total Allowable Load Lead Voltage Drop (total of both leads) with Remote Sensing Outpu

Output Connections and Operating Information 54 Open Sense Leads The sense leads are part of the supply’s feedback path. Connect them in such

Output Connections and Operating Information 55 Figure 4-8. External Trigger Circuit Figure 4-9. Equivalent Internal OV Trigger Circuit Power Su

Output Connections and Operating Information 56 Figure 4-10. Recommended Protection Circuit for Battery Charging Capacitive Load Limitation

Output Connections and Operating Information 57 Figure 4-11. Parallel Connections with Local Sensing CV Operation For CV operation, one output mus

Output Connections and Operating Information 58 CC Operation For CC operation, set the output voltages as outlined in CV operation (page 57),

Output Connections and Operating Information 59 Series Operation SHOCK HAZARD. Floating voltages must not exceed 240 Vdc. No output terminal may be

6WHAT THIS MANUAL CONTAINSIt contains information relating to the installation, operation, and programming of these supplies as outlined below.Mainten

Output Connections and Operating Information 60 CC Operation For CC operation, the current setting of each output must be programmed to the de

Output Connections and Operating Information 61 Voltage All series specifications referring to voltage are twice the single output specificationex

Remote Operation 63 5 Remote Operation Introduction Chapter 3 introduced you to the basics of remote operation and provided a few simple examples

Remote Operation 64the SRQ annunciator regardless of whether the condition that caused the service request continues to exist. The servicereque

Remote Operation 65 Power-On Service Request (PON) The power supply can request service from the controller when the power is turned on. This reques

Remote Operation 66 Table 5-1. Power Supply Commands (continued) Command Header OutputChannel Data Range (Fig. 5-2) Syntax Query present hard

Remote Operation 67 Table 5-1. Power Supply Commands (continued) Command Header OutputChannel Data Range (Fig. 5-2) Syntax Store present output sta

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

7Table Of Contents1 General InformationIntroduction... ...

Remote Operation 70 Table 5-2. Power Supply Queries Query Header (Note 7) Channel(Note 1) Response (Notes 5 and 6) Initial Value Syntax (Fig.

Remote Operation 71 Initial Conditions Immediately after power on from the factory, the power supply automatically undergoes a self-test and sets al

Remote Operation 72 VSET 1,.45 If the output channel is operating in constant voltage mode (CV annunciator on) then the actual voltage is the

Remote Operation 73 Current Programming To program the current, send the output channel and the programmed value in amps. In the example below, outp

Remote Operation 74 Output On/Off The OUT command disables/enables an output channel of the power supply. It will not disturb any other progr

Remote Operation 75 Overcurrent Protection (OCP) The OCP is a protection feature employed by the power supply to guard against excessive output curr

Remote Operation 76 The Clear Command This command will return the power supply to its power-on state and all parameters are returned to thei

Remote Operation 77 Table 5-5. Bit Assignment for the Status, Astatus, Fault, and Mask Registers Bit Position 7 6 5 4 3 2 1 0 Bit Weight 128

Remote Operation 78 UNMASK 2,XXX where XXX specifies the numeric code (0 to 255) for the unmasked conditions (see Table 5-5). If during operat

Remote Operation 79 Service Request Generation When operating your supply, you may want it to request service every time a fault or a programming e

8Table Of Contents (continued) Positive and Negative Voltages...

Remote Operation 80 The ability to generate service requests can be enabled or disabled using the SRQ command as described below. To disable

Remote Operation 81Reprogramming delay will delay the onset of certain fault conditions and prevent the power supply from registering a faultwhen the

Remote Operation 82Other QueriesIn the examples discussed above, you saw how to use queries for each function discussed. The following paragrap

Remote Operation 83To enable all outputs in constant current mode at turn on send: DCPON 2To disable all outputs in constant current mode at turn-on

Remote Operation 84Table 5-8. Error Messages (continued)Front PanelResponseGP-IBCodeExplanation HDW ERR CH 1 11 Errors 11 through 14 refer to a

Local Operation856Local OperationIntroductionChapter 3 introduced you to the supply’s front panel controls and indicators to help you turn on the supp

Local Operation86Figure 6-1. Front Panel (Model 6626A shown)Pressing the ENTER key will enter the values displayed for the function indicated, i

Local Operation87The voltage step keys can also be used to change the voltage setting.VSET ÑVOLT or ÒVOLT then ENTERThe voltage can be set in the imme

Local Operation88Setting Overvoltage ProtectionProgrammable overvoltage protection (OVP) guards your load against overvoltage by crowbarring and

Local Operation89For example, you can change the address of your supply to 10 by pressing:ADDR 1 0 ENTERDisplaying Error MessagesThe power supply can

9Table Of Contents (continued)Local Control Of Output Functions...

Alignment Procedures91AA

Alignment Procedures92The program contains embedded comments (identified by a leading asterisk {! } ) which explain various sections andproced

Alignment Procedures93Af

Alignment Procedures94Figure A-3Figure A-4Figure A-5

Alignment Procedures95Al

Alignment Procedures96Alignment Program (continued)530 ! -1 is reverse polarity, this saves540 ! reversing leads as sink channel550 ! becomes

Alignment Procedures97Al

Alignment Procedures98Alignment Program (continued)1570 PRINT "Press CONTINUE when ready1580 PAUSE1590 Output_on1600 !1610 Cal_v: !1

Alignment Procedures99Al