Agilent Technologies Understanding Programming & Error Management for Agilent 6813B Air Conditioners
Page 127

Programming Examples - 4

Coupled Commands

This section describes how to avoid programming errors that may be caused because of the error checking done for coupled commands.

VOLTage:LEVel, VOLTage:OFFSet, and FUNCtion:SHAPe

When using these commands, assume the present state of the ac source has ac amplitude set to 240 volts rms and dc offset set to 0, and a new state is desired with ac amplitude of 0 and dc offset of 300 volts. If the commands

VOLTage:OFFSet 300

VOLTage 0

are sent individually, an error will be generated because the first command requests an output state that exceeds the peak voltage capability. The error can be avoided by reversing the order in which the commands are sent.

Another way to avoid this type of error with coupled commands is to give the commands together as part of one terminated message as in

VOLTage:OFFSet 300;:VOLTage 0

When coupled commands are sent this way, the couplings are deferred and resolved when the newline terminator is received.

Other commands that are coupled to the VOLTage, VOLTage:OFFSet, and SHAPe commands are the output transient commands that control step, pulse and list generation. When an output transient is initiated (ready to receive a trigger), the error checking that takes place for maximum peak output voltage includes any combination of voltage, voltage offset, or function shape that can occur during the transient.

CURRent:LEVel and VOLTage:RANGe (Agilent 6814B/6834B/6843A only)

Programming the current limit by itself to a value that is greater than the maximum allowed on the presently programmed voltage range causes an error. If the commands

VOLTage:RANGe 300

CURRent 10

are sent, an error will be generated because the CURRent command is requesting a current limit that is outside the maximum value allowed on that voltage range.

Programming the VOLTage:RANGe by itself causes the programmed current limit to be set to the maximum for the given range if it had previously been higher than the maximum setting for the new range. If the commands

VOLTage:RANGe 150

CURRent 10

VOLTage:RANGe 300

are sent, no error will be generated because the second VOLTage:RANGe command automatically sets the programmed current limit to 5, which is the maximum value for the programmed voltage range.

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Contents Programming Guide Printing History Safety SummaryTable of Contents System Considerations Language DictionaryMeasurement Subsystem Frequency Source Subsystem Function Source Subsystem Voltage 121 Programming ExamplesElgar Model 9012 Compatibility Scpi Command TreeError Messages Scpi Conformance Information181 IEC Mode Command Summary167 IndexInformation about this Current model About this GuideEarlier AC Source Models Documentation SummaryGpib References Agilent VXIplug&play Power Products Instrument DriversExternal References Scpi ReferencesAccessing Online Help Downloading and Installing the DriverSystem Requirements Page RS-232 Data Format Gpib Capabilities of the AC SourceRS-232 Capabilities of the AC Source Gpib AddressRS-232 Programming Example RS-232 TroubleshootingTypes of Scpi Messages Types of Scpi CommandsIntroduction to Scpi Conventions Used in This GuideRoot Level Scpi Command TreeActive Header Path Moving Among Subsystems Effect of Optional HeadersStructure of a Scpi Message Including Common CommandsUsing Queries Coupled CommandsHeaders Combining Message UnitsMessage Terminator Query IndicatorMessage Unit Separator Root SpecifierCharacter Data Scpi Data FormatsNumerical Data Formats Suffixes and MultipliersAgilent 82335A Driver System ConsiderationsAssigning the Gpib Address in Programs Types of DOS DriversAgilent Basic Controllers Error HandlingPage Introduction Language DictionarySubsystem Subsystem CommandsCalcurrac Calibration Subsystem CommandsSubsystem Syntax CALibrateCURRentACCALibrateLEVel CALibrateCURRentMEASureCALibrateDATA CALibrateIMPedanceCALibrateSAVE CALibratePASSwordCALibratePWMFREQuency CALibratePWMRAMPCalstat 1,6812 Calstat OFF CALibrateSTATeCALibrateVOLTageAC CALibrateVOLTageDCCALibrateVOLTagePROTection CALibrateVOLTageOFFSetCALibrateVOLTageRTIMe DISPlayTEXT Display Subsystem CommandsDISPlay DISPlayMODEINSTrumentCOUPle Instrument SubsystemInstcoup ALL INSTrumentNSELect INSTrumentSELect MEASureARRayCURRent? FETChARRayCURRent? Measurement Subsystem ArraysMEASureARRayCURRentHARMonic? FETChARRayCURRentHARMonic? MEASureARRayCURRentNEUTral? FETChARRayCURRentNEUTral? MEASureARRayVOLTage? FETChARRayVOLTage? MEASureARRayVOLTageHARMonic? FETChARRayVOLTageHARMonic? MEASureCURRent? FETChCURRent? Measurement Subsystem CurrentMEASureCURRentACDC? FETChCURRentACDC? MEASureCURRentAC? FETChCURRentAC?MEASureCURRentHARMonic? FETChCURRentHARMonic? MEASureCURRentCREStfactor? FETChCURRentCREStfactor?Parameters Examples MEASureCURRentHARMonicTHD? FETChCURRentHARMonicTHD? MEASureCURRentHARMonicPHASe? FETChCURRentHARMonicPHASe?MEASureCURRentNEUTral? FETChCURRentNEUTral? MEASureCURRentNEUTralACDC? FETChCURRentNEUTralACDC? MEASureCURRentNEUTralAC? FETChCURRentNEUTralAC?MEASureCURRentNEUTralHARMonic? FETChCURRentNEUTralHARMonic? MEASCURRNEUTHARMPHAS? MEASureFREQuency? FETChFREQuency? Measurement Subsystem FrequencyMEASurePOWer? FETChPOWer? Measurement Subsystem PowerMEASurePOWerAC? FETChPOWerAC? MEASurePOWerACREACtive? FETChPOWerACREACtive? MEASurePOWerACAPParent? FETChPOWerACAPParent?MEASurePOWerACPFACtor? FETChPOWerACPFACtor? MEASurePOWerACTOTal? FETChPOWerACTOTal? MEASureVOLTage? FETChVOLTage? Measurement Subsystem VoltageMEASureVOLTageAC? FETChVOLTageAC? MEASureVOLTageHARMonic? FETChVOLTageHARMonic? MEASureVOLTageACDC? FETChVOLTageACDC?MEASureVOLTageHARMonicTHD? FETChVOLTageHARMonicTHD? MEASureVOLTageHARMonicPHASe? FETChVOLTageHARMonicPHASe?Output Subsystem Command SyntaxOUTPut Outpcoup DC OUTPutCOUPlingOUTPutDFI OUTPutDFISOURceOutpimpreal OUTPutIMPedanceOUTPutIMPedanceREAL OUTPutIMPedanceREACtiveOutpponstat RST OUTPutPROTectionDELayOUTPutPONSTATe OUTPutPROTectionCLEarOutpttlt OUTPutRIMODEOUTPutTTLTrg OUTPutTTLTrgSOURceSENSeCURRentACDCRANGe Sense SubsystemSenswind Kbes SENSeSWEepOFFSetPOINtsSENSeSWEepTINTerval SENSeWINDowCURRent Source Subsystem CurrentCURRentPEAKMODE CURRentPEAKCurrpeakmode FIX CURRentPROTectionSTATe CURRentPEAKTRIGgeredFREQuency Source Subsystem FrequencyFREQuencyMODE FREQuencySLEWMODE FREQuencySLEWFREQencySLEWTRIGgered FREQuencyTRIGgered FUNCtion Source Subsystem FunctionQuery Syntax SOURceFUNCtionSHAPeMODE? FUNCtionMODEFUNCtionTRIGgered Funcmode FIXFunccsin Funccsin 10 THD FUNCtionCSINusoidQuery Syntax SOURceFUNCtionSHAPeCSINusoid? List Source Subsystem ListLISTCURRentPOINts? Related Commands ListcurrLISTCOUNt LISTCURRentLISTFREQuency Related Commands ListdwelLISTDWELl LISTDWELlPOINts?LISTFREQuencySLEWPOINts? LISTPHASeLISTFREQuencyPOINts? LISTFREQuencySLEWLISTSHAPe LISTPHASePOINts?Related Commands Listphas Related Commands ListshapListstep Once ListstepLISTTTLTrg LISTTTLTrgPOINts?Query Syntax SOURceLISTVOLTageLEVelPOINTs? LISTVOLTageLISTVOLTagePOINts? LISTVOLTageSLEWLISTVOLTSLEWPOIN? LISTVOLTageSLEWPOINts?LISTVOLTageOFFSet LISTVOLTageOFFSetPOINts?LISTVOLTageOFFSetSLEWPOINts? LISTVOLTageOFFSetSLEWQuery Syntax SOURceLISTVOLTageOFFSetSLEWPOINTs? PHASe Source Subsystem PhaseSubsystem Syntax PHASeTRIGgered PHASeMODEPULSeCOUNt Source Subsystem PulsePULSeDCYCle Pulshold Dcyc PULSeHOLDPULSeWIDTh PULSePERiodSource Subsystem Voltage VOLTageTRIGgered VOLTageVolt VOLTageOFFSet VOLTageMODEQuery Syntax SOURceVOLTageOFFSetMODE? VOLTageOFFSetMODEVOLTageOFFSetTRIGgered Voltoffsmode FIXQuery Syntax SOURceVOLTageOFFSetSLEWMODE? VOLTageOFFSetSLEWVOLTageOFFSetSLEWMODE Voltoffsslewmode StepVoltprotstat VOLTageOFFSetSLEWTRIGgeredVOLTagePROTection VOLTagePROTectionSTATeRTIMe Agilent 6814B, 6834B, 6843A Only Phase SelectableVOLTageRANGe VOLTageSENSeDETector VOLTageALCDETectorVOLTageSLEW VOLTageSENSeSOURce VOLTageALCSOURceINTernal EXTernal Query Syntax SOURceVOLTageSLEWMODE? VOLTageSLEWMODEVOLTageSLEWTRIGgered Voltslewmode StepStatus Subsystem STATusPRESetSTATusOPERationCONDition? Bit Configuration of Operation Status RegistersSTATusOPERationENABle STATusOPERation?Statoperntr STATusOPERationNTRansition STATusOPERationPTRansitionSTATQUESEVEN? Bit Configuration of Questionable Status RegistersSTATusQUEStionable? STATusQUEStionableCONDition?STATusQUEStionableNTRansition STATusQUEStionablePTRansition STATusQUEStionableENABleQuery Syntax STATusQUEStionableENABle? NR1 register value Related CommandsSTATusQUEStionableINSTrumentISUMmary? Agilent 6834B Only Phase SelectableStatquesinstisumenab STATusQUEStionableINSTrumentISUMmaryENABleSTATusQUEStionableINSTrumentISUMmaryCONDition? STATQUESINSTISUMCOND?101 StatquesinstisumntrSYSTemCONFigure System CommandsSystconf Norm Systconfnout SYSTemCONFigureNOUTputsSYSTemERRor? SYSTemVERSion?SYSTemRWLock SYSTemLANGuageSYSTemLOCal SYSTemREMoteData Command Syntax Parameters Examples Query SyntaxTrace Subsystem TRACeTRACeDELete DATADELete Command Syntax Parameters Examples Related CommandsTRACeCATalog? DATACATalog? TRACeDEFine DATADEFine107 Trigger SubsystemINITSEQ1 Initname ACQ ABORtINITiateSEQuence INITiateNAME Abor109 TRIGgerDELayINITiateCONTinuousSEQuence INITiateCONTinuousNAME TRIGgerGpib device, *TRG, or GET Group Execute Trigger IMMediate PHASeTRIGgerSOURce TRIGgerSEQuence2SOURce TRIGgerSYNChronizeSOURce111 TRIGgerSEQuence2PHASe TRIGgerSYNCHronizePHASeCommand Syntax Parameters RST Value Examples Query Syntax TRIGgerSEQuence3 TRIGgerACQuire112 TRIGgerSEQuence3SOURce TRIGgerACQuireSOURceCommon Commands Syntax Common Commands113 ESE Bit Configuration of Standard Event Status Enable RegisterCommand Syntax *CLS Parameters None CLSField Information ESR?IDN? OPCPSC OPT?RCL RST NR1 register binary value Command Syntax SAV NRf Parameters ExampleSAV SRETST? Bit Configuration of Status Byte RegisterSTB? TRGWAI OUTPut on Power-on InitializationProgramming the Output Enabling the Output122 AC Voltage and FrequencyMaximum Voltage Voltage Ranges Agilent 6814B/6834B/6843A onlyWaveform Shapes Voltage and Frequency Slew Rates124 Individual Phases Agilent 6834B onlyClipped Waveform User-Defined Waveform125 Selecting a PhaseProgramming the Output Phase Current LimitPeak Current Limit Agilent 6811B/6812B/6813B only DC Output Agilent 6811B/6812B/6813B only126 127 VOLTageLEVel, VOLTageOFFSet, and FUNCtionSHAPeVOLTageOFFSet 300VOLTage VOLTageRANGe CURRentVOLTageRANGe CURRent 10VOLTageRANGe Programming Output Transients128 Model of Transient System 129 Transient System ModelStep Example Step and Pulse Transients130 Step List Transients131 Sequence Form Alias Triggering Output ChangesScpi Triggering Nomenclature LISTCOUNtModel of Output Triggers 133 Output Trigger System ModelTRIGgerSEQuence1SOURce BUS TRIGgerTRANsientSOURce BUS Initiating the Output Trigger SystemSelecting the Output Trigger Source ABORt *RST *RCLSynchronizing Output Changes to a Reference Phase Angle Specifying a Trigger Delay135 Continuous Triggers Generating Output TriggersSpecifying a Dwell Time for Each List Point Single TriggersVoltage and Current Measurements Making Measurements137 138 Power MeasurementsSimultaneous Output Phase Measurements Agilent 6834B only Harmonic MeasurementsReturning Voltage and Current Data From the Data Buffer Triggering MeasurementsMeasurement Trigger System Model 140 Initiating the Measurement Trigger SystemSelecting the Measurement Trigger Source INITiateIMMediateSEQuence3 or INITiateIMMediateNAME ACQuire141 Generating Measurement TriggersVarying the Voltage and Current Sampling Rate Pre-event and Post-event TriggeringProgramming the Status Registers Power-On ConditionsOperation Status Group 143 Bit SignalStatus Byte and Service Request Enable Registers Standard Event Status GroupAc Source Status Model 144 Questionable Instrument Isummary Status Group Questionable Status Group145 146 Command ActionPON Power On Bit Standard Event Status GroupExamples Status Byte RegisterServicing Questionable Status Events Programming the Trigger In and Trigger Out BNC ConnectorsMonitoring Both Phases of a Status Transition Trigger In BNCTrigger Out BNC Remote Inhibit and Discrete Fault Indicator149 150 Scpi Command CompletionDiscrete Fault Indicator DFI Remote Inhibit RI151 Command Syntax152 Scpi Command Tree153 Scpi Command Tree aPage 155 Scpi Confirmed Commands156 Non Scpi CommandsError # Error Number List157 158 159 Page 161 Elgar Model 9012 Plug-in Programmer CompatibilityMain Board W1 Jumper Option Emulation Syntax CompatibilityByte Power-on StateCommand Description Status ModelFunction Keys ProtectionFront Panel Operation System KeysDevice Clear Volts n Curl n Freq n RNG 0 Rngf 0 1 E9012 Language Command SummaryEntry Keys Trigger Control key functions165 Drop nPage 167 Using the SENSeCURRentACDCRANGe command168 Command SyntaxCALCulateSMOothing CALCulateINTegralTIME169 170 CALCulateLIMitUPPerVss delta Dmax limit Dc limit Dt tlimit Dt limit171 FORMat172 FORMatBORDerMEASureARRayCURRentHARMonic? 174 MEASureARRayVOLTageFLUCtuationsALL?175 Point Pst array176 MEASureARRayVOLTageFLUCtuationsFLICker?177 MEASureARRayVOLTageFLUCtuationsPST?178 SENSeCURRentPREFerence179 Slew Operation MEASureARRayCURRentPage 181 Index182 Index183 Scpi List Step 184QUEStionable INSTrument ISUMmary? 185Agilent Sales and Support Offices Manual Updates
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6812B, 6811B, 6813B, 6834B, 6843A specifications

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