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  • SCPI
    • General
    • Command Reference
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    • General commands
      • :ABORt
      • *CLS
      • *ESE
      • *ESR
      • *IDN
      • *OPC
      • *OPC?
      • *RST
      • *SRE
      • *STB
      • *TRG
      • *TST
      • *WAI
    • Calculate subsystem
      • :CALCulate:PARameter:DEFine
      • :CALCulate[:SELected]:DATA:SDATa
      • :CALCulate[:SELected]:FORMat
      • :CALCulate[:SELected]:ZPARameter:DEFine
    • Format subsystem
      • :FORMat[:DATA]
    • Initiate subsystem
      • :INITiate[:IMMediate]
      • :INITiate:CONTinuous
    • Input subsystem
      • :INPut:ATTenuation:CH1
      • :INPut:ATTenuation:CH2
      • :INPut:ATTenuation:R
      • :INPut:ATTenuation:T
      • :INPut:GAIN:CH1
      • :INPut:GAIN:CH2
      • :INPut:GAIN:R
      • :INPut:GAIN:T
      • :INPut:IMPedance:CH1
      • :INPut:IMPedance:CH2
      • :INPut:IMPedance:R
      • :INPut:IMPedance:T
    • Mass Memory subsystem
      • :MMEMory:STORe:CORRection
      • :MMEMory:LOAD:CORRection:FULLrange
      • :MMEMory:LOAD:CORRection:USERrange
    • Output subsystem
      • :OUTPut:AOFF
    • Sense subsystem
      • :SENSe:AVERage[:STATe]
      • :SENSe:AVERage:CLEar
      • :SENSe:AVERage:COUNt
      • :SENSe:BANDwidth[:RESolution]
      • :SENSe:BWIDth[:RESolution]
      • :SENSe:CORRection:FULLrange:ACTive
      • :SENSe:CORRection:FULLrange:AVAIlable
      • :SENSe:CORRection:FULLrange:ENABle
      • :SENSe:CORRection:FULLrange:EXTPolated
      • :SENSe:CORRection:FULLrange:MULTimode
      • :SENSe:CORRection:FULLrange:LOAD[:EXEcute]
      • :SENSe:CORRection:FULLrange:OPEN[:EXEcute]
      • :SENSe:CORRection:FULLrange:SHORt[:EXEcute]
      • :SENSe:CORRection:FULLrange:THRU[:EXEcute]
      • :SENSe:CORRection:IMPedance[:INPut][:MAGNitude]
      • :SENSe:CORRection:LOAD
      • :SENSe:CORRection:SDELaytime
      • :SENSe:CORRection:USERrange:ACTive
      • :SENSe:CORRection:USERrange:AVAIlable
      • :SENSe:CORRection:USERrange:ENABle
      • :SENSe:CORRection:USERrange:MULTimode
      • :SENSe:CORRection:USERrange:LOAD[:EXEcute]
      • :SENSe:CORRection:USERrange:OPEN[:EXEcute]
      • :SENSe:CORRection:USERrange:SHORt[:EXEcute]
      • :SENSe:CORRection:USERrange:THRU[:EXEcute]
      • :SENSe:FREQuency:CENTer
      • :SENSe:FREQuency:DATA
      • :SENSe:FREQuency:SPAN
      • :SENSe:FREQuency:STARt
      • :SENSe:FREQuency:STOP
      • :SENSe:SWEep:DWELl
      • :SENSe:SWEep:POINts
      • :SENSe:SWEep:TIME[:DATA]?
      • :SENSe:SWEep:TYPE
      • :SENSe:Z:METHod
    • Service subsystem
      • :SERVice:SWEep:FREQuency:MAXimum
      • :SERVice:SWEep:FREQuency:MINimum
    • Source subsystem
      • :SOURce:POWer[:LEVel][:IMMediate][:AMPLitude]
    • Status subsystem
      • :STATus:OPERation[:EVENt]
      • :STATus:OPERation:CONDition
      • :STATus:OPERation:ENABle
      • :STATus:OPERation:NTRansition
      • :STATus:OPERation:PTRansition
      • :STATus:PRESet
      • :STATus:QUEStionable[:EVENt]
      • :STATus:QUEStionable:CONDition
      • :STATus:QUEStionable:ENABle
      • :STATus:QUEStionable:NTRansition
      • :STATus:QUEStionable:PTRansition
    • System subsystem
      • :SYSTem:ERRor[:NEXT]
      • :SYSTem:ERRor:COUNt
      • :SYSTem:PRESet
      • :SYSTem:VERSion
    • Trigger subsystem
      • :TRIGger[:SEQuence][:IMMediate]
      • :TRIGger[:SEQuence]:SINGle
      • :TRIGger[:SEQuence]:SOURce

    :TRIGger[:SEQuence]:SOURce

    Description

    Selects the expected trigger source.

    For more information about the trigger system, please refer to Trigger System.

    • Command
    • Query
    Syntax Parameter
    :TRIGger[:SEQuence]:SOURce { INTernal | BUS | EXTernal }
    Parameters accepted format allowed suffixes possible Errors description
    { INTernal | BUS | EXTernal } exactly the given options none Illegal parameter value Source of the trigger.
    Syntax Response
    :TRIGger[:SEQuence]:SOURce? { INT | BUS | EXT}
    Response value description
    { INT | BUS | EXT} Source of the trigger.

    Options

    Options Description
    BUS The BUS trigger is selected e.g. the device can be triggered with the *TRG command, but also with :TRIG:SING
    INTernal The Internal trigger is selected e.g. the device triggers itself. This can be useful when performing continuous measurements.
    EXTernal The External trigger is selected. The availability of an external trigger depends on the device used.

    Presets

    default value
    { INTernal | BUS | EXTernal } INTernal

    Sample usage

    Initiate the trigger and perform a single trigger cycle.

    • C#
    • Python
    var visaSession = new TcpipSocket(VISA_RESOURCENAME);
    visaSession.RawIO.Write(":TRIG:SOUR BUS\n");
    visaSession.RawIO.Write(":INIT\n");
    visaSession.RawIO.Write("*TRG\n");
    

    Input:

    visaSession.write(':TRIG:SOUR BUS\n')
    visaSession.write(':INIT\n')
    visaSession.write('*TRG\n')
    

    Related commands

    :INITiate:CONTinuous

    :INITiate[:IMMediate]

    References

    Trigger System

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