Agilent Technologies 665xA Controlling the Output, Programming Voltage and Current, Outp Off

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Controlling the Output

Controlling the Output

Important The power supply responds simultaneously to both digital and analog programming inputs. If it is receiving an input over the GPIB and a corresponding input from the front panel (and/or from the analog programming port), the power supply output will be the algebraic sum of the inputs.

Programming Voltage and Current

The following statements program both voltage and current and return the actual output from the sense terminals:

OUTP OFF

Disable the output.

VOLT 4.5;CURR 255

Program the voltage and current.

VOLT?;CURR?

Read back the programmed levels.

OUTP ON

Enable the output.

MEAS:VOLT?;MEAS:CURR?

Read back the outputs from the sense terminals.

Programming Protection Circuits

This example programs the voltage and current, programs an overvoltage protection value, and turns on the overcurrent protection. It then reads back all the programmed values.

VOLT:LEV 4.5;PROT 4.75

Program the voltage and overvoltage protection.

CURR:LEV 255;PROT:STAT ON

Program the current and overcurrent protection.

VOLT:LEV?;PROT?;:CURR:LEV?;PROT:STAT?

Read back the programmed values.

Note the required use of the optional LEVel header in the above example (see "The Effect of Optional Headers", given previously).

Changing Outputs by Trigger

If you do not program pending triggered levels, they default to the programmed (immediate) output levels. The following statements shows some basic trigger commands.

OUTP OFF

Disable the output.

VOLT:LEV:IMM 2.2;TRIG 2.5

Program the (immediate) voltage level to 2.2V and the pending

CURR:LEV:IMM I5O;TRIG 250

triggered level to 2.5 V.

Program the (immediate) current level to 150 A and the pending

VOLT:LEV:IMM?;TRIG?;:CURR:LEV:IMM?;TRIG?

triggered level to 250 A.

Check all the programmed values.

OUTP ON

Enable the output.

MEAS:VOLT?;CURR?

Read back the immediate levels from the sense terminals.

INTIT;TRIG

Arm the trigger circuit and send a single trigger.

INIT;*TRG

Same as above, except using a common command.

MEAS:VOLT?;CURR?

Read back the triggered levels from the sense terminals.

If you need to send two or more triggers, program the trigger circuit for continuous arming.

OUTP OFF

Disable the output.

VOLT:LEV:IMM 5.O;TRIG 2.5

Program the (immediate) voltage level to 5 V and the pending

INTIT:CONT ON

triggered level to 2.5 V.

Program the trigger circuit for continuous arming.

OUTP ON

Enable the output to 5 V.

TRIG

Trigger the output voltage to 2.5 V.

VOLT:TRIG 5;:TRIG

Set the pending trigger level to 5 V and trigger the output voltage

INTIT:CONT OFF

back to 5 V.

Remove the continuous trigger arming.

16 Remote Programming

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Contents July PROGRAMMING GUIDE GPIB DC POWER SUPPLIESAgilent Part No Microfiche Part NoPrinting History Safety GuidelinesLANGUAGE DICTIONARY ContentsGENERAL INFORMATION REMOTE PROGRAMMINGDescription of Subsystem Commands COMPATIBILITY LANGUAGE ERROR MESSAGESSTATUS REPORTING SCPI CONFORMANCE INFORMATIONUser’s Guide General InformationAbout this Guide Documentation SummaryAccessing Online Help Prerequisites for Using this GuideVXIplug&play Power Product Instrument Drivers Downloading and Installing the DriverConventions GPIB Capabilities Of The Power SupplyRemote Programming Introduction To SCPICommon Commands Types of SCPI CommandsSCPI Messages Structure of a SCPI MessageVOLT LEV PROT CURR Parts of a SCPI MessageFigure 2-1.Command Message Structure Message ComponentRoot Specifier Traversing the Command TreeQuery Indicator Message Unit SeparatorMoving Among Subsystems Figure 2-2.Partial Command TreeActive Header Path The Effect of Optional HeadersSCPI Data Formats Including Common CommandsSCPI Queries Value CouplingClass ExamplesListening Formats Table 2-2.Suffixes and MultipliersProgramming Voltage and Current Controlling the OutputDisable the output Enable the outputSaving and Recalling States Writing to the DisplayProgramming Status System Considerations Programming the Digital I/O PortThe GPIB Address A direct primary address and a secondary address Error Handling DOS DriversAgilent BASIC Controllers Sample Program CodeController Using Agilent 82335A Interface Programming Some Power Supply Functions22 Remote Programming Programming Some Power Supply Functions continued1130 24 Remote Programming Language Dictionary Related CommandsCommon Commands Subsystem CommandsFigure 3-1.Common Commands Syntax Diagram Description Of Common CommandsMeaning and Type Description0 to Query Syntax ESR?IDN? Related CommandsPSC 0 *PSC OPC?OPT? Power-onStatus Clear Device InitializationDescription Meaning and TypeDescription Bit Configuration of Status Byte Register STB?TST? Figure 3-2.Subsystem Commands Tree Diagram Description of Subsystem CommandsCalibration Commands ABORCURRENT:LEVEL 200 MA Current SubsystemCURR CURR TRIG CURR PROT STATDigital I/O Port Programming Chart Display SubsystemDIG DATA DISPenclosed in either single ‘ or double quotes DISP MODEDISP TEXT DISP TEXT DEFAULT MODEMEAS CURR? MEAS VOLT? Initiate SubsystemMeasure Subsystem INIT INIT:CONT0 or Output SubsystemOUTP OUTP PROT CLE OUTP PROT DELOUTP REL POL NORM OUTP RELOUTP REL POL OUTP REL 1 OUTP REL OFFSTAT OPER? Status SubsystemSTAT PRES Status Operation RegistersSTAT OPER ENAB STAT OPER NTR STAT OPER PTRSTATUS OPERATION ENABLE? STAT QUES ENAB Status Questionable RegistersSTAT QUES? STAT:QUES:COND?corresponding Questionable Event register System CommandsSTAT QUES NTR STAT QUES PTR SYST ERR?TRIG Trigger SubsystemSYST LANG SYST VERS?VOLTAGE LEVEL 200 MV Voltage SubsystemTRIG SOUR VOLT VOLT TRIGCommand Command SummaryVOLT:PROT Command SummaryCommand Parameters Agilent Model and Value Characteristics in the Operating GuideProgramming Parameters ParameterOperation Status Group Power Supply Status StructureRegister Commands Status ReportingMeaning Table 4-2.Bit Configurations of Status RegistersSignal Figure 4-1.Power Supply Status ModelCLS *ESR? Questionable Status GroupStandard Event Status Group Table 4-3.Status Questionable CommandsStatus Byte Register Service Request Enable RegisterInitial Conditions At Power On Determining the Cause of a Service InterruptCaused By The PON Power-OnBitServicing an Operation Status Mode Event Table 4-4.Default Power On Register StatesTable 4-5.Generating RQS from the CC Event Monitoring Both Phases of a Status TransitionAdding More Operation Events Servicing Questionable Status EventsTechniques in ANSI/IEEE Std SCPI Command CompletionDFI Discrete Fault Indicator RI Remote InhibitSystem Error Messages Error MessagesPower Supply Hardware Error Messages Calibration Error Messages60 Error Messages SCPI Version SCPI Confirmed Commands1SCPI Approved Commands SCPI Conformance InformationNON-SCPICommands1 Compatibility Language Table B-1.ARPS Commands ARPS Command1Similar SCPI Table B-1.ARPS Commands continued Description Index 68 Index Page Canada Agilent Sales and Support OfficeUnited States Latin America
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668xA, 669xA, 667xA, 664xA, 665xA specifications

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