Agilent Technologies 66lxxA manual Opt?, Psc

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Do not follow *OPC? with *TRG or GPIB bus triggers. Such triggers sent after *OPC? will be prevented from executing and will prevent the power module from accepting further commands. If this occurs, the only programmable way to restore operation is by sending the power module a GPIB DCL (Device Clear) command.

Query Syntax	*OPC?
Returned Parameters	<NR1>	ASCII 1 is placed in the Output Queue when the
		power module has completed operations.
Related Commands	OPC TRIG	*WAI
*OPT?
Identification Query
Meaning and Type
Identification System Interface

Description

This query requests the power module to identify any options that are installed. Options are identified by number, as shown below. A 0 indicates no options are installed.

Query Syntax	*OPT?
Returned Parameters	<AARD>
Related Commands	(None)

*PSC

Meaning and Type

Power-on Status Clear Device Initialization

Description

This command controls the automatic clearing at power on the following registers (see "Chapter 4 - Status Reporting" for register details):

∙Service Request Enable.

∙Standard Event Status Enable.

If the command parameter = 1 (or any non-zero value), then the above registers are cleared at power on. If the command parameter = 0, then the above registers are not cleared but are programmed to their last state prior to power turn on. This is the most common application for *PSC and enables the power module to generate an SRQ (Service Request interrupt) at power on.

Command Syntax	*PSC <bool>
Parameters	0 1 OFF ON
Example	PSC 0 PSC 1
Query Syntax	*PSC?
Returned Parameters	<NR1> 0 1
Related Commands	ESE SRE

*PSC causes a write cycle to nonvolatile memory. If *PSC is programmed to 0, then the *ESE and *SRE commands also cause a write cycle to nonvolatile memory. The nonvolatile memory has a finite number of write cycles (see Table 1-2 in the power module User’s Guide). Programs that

repeatedly write to nonvolatile memory can eventually exceed the maximum number of write cycles and may cause the memory to fail.

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Contents Agilent Part No Microfiche Part No Update April Programming GuideSafety Guidelines Contents Abor Status Reporting Synchronizing Power Module Output Changes Error MessagesDocumentation Summary IntroductionAbout This Guide External ReferencesAccessing Online Help VXIplug&play Power Products Instrument DriversDownloading and Installing the Driver Supported ApplicationsModule Gpib Address Gpib Capabilities Of The Power ModuleIntroduction To Programming Introduction To ScpiRST *IDN? *SRE Volt LEV Prot Curr Voltlev 8.0 Prot 8.8 CURR?Outpprotdel Traversing the Command Tree Effect of Optional HeadersVoltagelevel 7PROTECTION 8CURRENTLEVEL 3MODE List Outputprotectionclear STATUSOPERATIONCONDITION?OUTPUTPROTECTIONCLEARSTATUSOPERATIONCONDITION? Volttrig 7.5INIT*TRG Outp OFF*RCL 2OUTP onListening Formats SymbolNumerical Data Formats Talking Formats Suffixes and Multipliers Class Unit Unit with MultiplierSystem Considerations Assign @PM3TOError Handling Agilent Basic ControllersUsing the National Instruments Gpib Interface Sending the Command Volt 5 in Basic Sending the Command Volt 5 in CReceiving Data from the Module Receiving Module Data with BasicReceiving Module Data with C Language Dictionary IntroductionMeaning and Type Description Of Common CommandsCLS DescriptionESE Bit Configuration of Standard Event Status Enable RegisterESE ESR?OPC? IDN?OPC OPT? PSCRST RCLRCL SRE SAVSRE TRG Bit Configuration of Status Byte RegisterSTB? WAI Description of Subsystem CommandsTST? AborSubsystem Tree Diagram Calibration Subsystem CalautoCalcurrlev Calauto 1 Calauto OnceCalcurr CalpassCalvolt CalsaveCalstat CalvoltlevCurr 500 MA Currlev CalvoltprotCurr CurrmodeCurrtrig CurrprotstatCurrprotstat OFF Currtrig 1200 MA CurrlevtrigListcoun Listcoun INF Init Initcont 1 Initcont onListcoun ListcurrLISTDWELPOIN? LISTCURRPOIN?Listdwel ListstepLISTVOLTPOIN? ListvoltListvolt 2.0,2.5,3.0 Listvolt MAX,2.5,MIN MEASCURR? MEASVOLT?Outp Outpstat ON,NORELAY OutpprotOutprelpol Outpprotcle Outpprotdel 75E-1Outprel NormOutpttltlink OutpttltOutpttlt 1 Outpttlt OFF Outpttltsour LinkSTATOPERCOND? STATOPER?STATOPEREVEN? StatoperenabStat Oper NTR 32 Stat Oper PTR StatpresSTATQUESCOND? STATQUES?STATQUESEVEN? Stat Ques COND?Trigger Subsystem SYSTERR?SYSTVERS? TrigTrigdel .25 Trigdel MAX Trig Trig IMMTrigdel TriglinkVoltmode VoltVoltlev Voltmode List Voltmode FIXVolttrig 1200 MV Voltlevtrig VOLTSENSSOUR?Volttrig Power Module Programming Parameters Link Parameter ListStatus Reporting Power Module Status StructureStatus Register Bit Configuration Operation Status GroupQuestionable Status Group Bit Signal Bit Configurations of Status Registers MeaningStatus Questionable Commands Query Power Module Status Model Standard Event Status GroupLocation Of Event Handles Status Byte RegisterOutput Queue Initial Conditions At Power On ExamplesSTATOPEREVEN?QUESEVEN? Statoperptr 5376ENABStatquesptr 18ENAB Statoperptr 1024NTR Statoperenab 1024*SREModel of Fixed-Mode Trigger Operation Synchronizing Power Module Output ChangesTrigger Subsystem Initiated State Delaying StateIdle State Trigger Status and Event Signals Model of List Mode Trigger OperationINITiateCONTinuous Command Output Change StateOutpttltsour List Subsystem Listcurr 2,3,12,15 Listvolt 3.0,3.25,3.5,3.75 Listdwel 10,10,25,40Automatically Repeating a List Triggering a ListTiming diagrams of Liststep Operation RI Remote Inhibit Subsystem DFI Discrete Fault Indicator SubsystemScpi Command Completion System Error Messages Error MessagesPower Module Hardware Error Messages Standard Event Status Register Error Bits222 -223 -241 -310 -330 -350 -400 -410 -420 -430 Scpi Conformance Information Scpi Confirmed CommandsScpi Approved Commands Scpi VersionNon-SCPI Commands Application Programs Application 1. Sequencing Multiple Modules During Power Up Figure B1-1. Block Diagram of Application #1 Variations On This ImplementationFigure B1-2. Timing Diagram of Application #1 Enable Output Reset and Clear ModuleEnable Backplane TTL Trigger Drive Enable Response to TriggerImplementation Details How The MPS Implements The Solution MPS Set Up Figure B2-1. Block Diagram of Application #2 Enable Response to TTL Trigger When a CV-TO-CC Transition OccursEnable TTL Trigger Drive Start AT 15Application 3. Controlling Output Voltage Ramp Up at Turn On Figure B3-1. Simulating a Slow Voltage Ramp Generating the Desired Voltage Ramp for Application #3 Stop Voltage for Ramp Option BaseStart Voltage for Ramp SecondsApplication 4. Providing Time-Varying Voltages Figure B4-1. Voltage Waveform for Application #4Module set up Variations On This Implementation Enable Detection of OC Condition Enable OCPNo Delay Before Protection Occurs Enables Detection on Positive TRANSITION, I.EApplication 5. Providing Time-Varying Current Limiting Figure B5-1. Typical DUT Current vs. Time Implementation Details How The MPS Implements The Sequence Dwell Time Data GO to 12 V When TriggeredCurrent Limit Data SET to GET Current from ListApplication 6. Output Sequencing Paced by the Computer Nominal 12MPS Set Up Figure B6-1. Block Diagram of Application #6 To be Tested These are the BiasSupply Limit Conditions Number of Bias Supply Limit C0MBINATIONSReturn Overview Of Application Advantages/Benefits Of The MPS Solution Figure B7-1. Block Diagram of Application #7 Enable SRQ Interrupt When the Module Indicates SIC Step CompletedWhen IT Completes the LIST. OPC Generates SRO Enable Intr Identify Handler SubroutineSupplemental Information ‘ Conversion to Send Real Numbers Over the BUS CMD$ = Output on ‘ Enable OutputCMD$ = Initiate ‘ Enable Trigger to Start List CMD$ = Voltmode List ‘ SET to GET Voltage from ListCONDITION.DATA = Call Iooutputs SLOTO, CMDS, LWaiting for Trigger BIT 5 of the Operation Status Register Wend‘ Program N3.BAS ‘ Disable Auto Serial PollIf IBSTA% 0 then Goto ‘ AS Part of the Command String ‘ INSTRUMENT.NAME$ = SlotoStop ‘ General Error HandlerIf IBSTA% 0 then Goto Selected AS a Trigger Source Application #3 Controlling Voltage Ramp UP AT Turn on Dwell = ramptimeTo terminate the iooutputa Int error Char *badstring If error != EOl enabled for both read and write Strcatvlist, vpoint This is a generalized error checking routine Index IndexIndex Index Index Agilent Sales and Support Offices United States Latin AmericaManual Updates