• General
  • API Documentation
  • SCPI
    • General
    • Command Reference
    • Starting Server

    Show / Hide Table of Contents
    • 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

    :SENSe:FREQuency:CENTer

    Description

    This command gets or sets the center frequency of a sweep. If the center frequency is altered, the start frequency and the stop frequency are changed accordingly. If the resulting value of either the start frequency or the stop frequency would exceed the limits, a Settings conflict error (-221) is raised and the values are NOT changed. If the center frequency value itself exceeds the maximum or minimum frequency limit, it is tried to set it to max or min value. This does not raise an error, if the span is set to 0Hz, otherwise a Settings conflict error is raised, because the start or stop frequency would exceed the limits.

    • Command
    • Query
    Syntax Parameter
    :SENSe<ch>:FREQuency:CENTer <numeric>
    Parameters accepted format allowed suffixes possible Errors description
    <ch> { 1 | empty } none Undefined header Currently only one channel is supported. Empty means 1 is used as default.
    <numeric> numeric value Hz Settings conflict The center frequency value of the sweep
    Syntax Response
    :SENSe:FREQuency:CENTer? <numeric>
    Parameters accepted format description
    <ch> { 1 | empty } Currently only one channel is supported. Empty means 1 is used as default.
    Response value description
    <numeric> value of the center frequency in Hz

    Presets

    default value
    <numeric> 30kHz

    Sample usage

    Configure and start a sweep measurement with center frequency of 10kHz and a span of 5kHz (from 7.5kHz to 12.5kHz).

    • C#
    • Python
    var visaSession = new TcpipSocket(VISA_RESOURCENAME);
    visaSession.RawIO.Write(":SENS:FREQ:CENT 10kHz\n");
    visaSession.RawIO.Write(":SENS:FREQ:SPAN 5kHz\n");
    visaSession.RawIO.Write(":TRIG:SING\n");
    // wait for the measurement to finish
    visaSession.RawIO.Write("*OPC?\n");
    visaSession.RawIO.ReadString();
    visaSession.RawIO.Write(":SENS:FREQ:DATA?\n");
    var frequencyValues = visaSession.RawIO.ReadString();
    visaSession.RawIO.Write(":CALC:DATA:SDAT?\n");
    var measurementValues = visaSession.RawIO.ReadString();
    

    Input:

    visaSession.write(':SENS:FREQ:CENT 10kHz\n')
    visaSession.write(':SENS:FREQ:SPAN 5kHz\n')
    visaSession.write(':TRIG:SING\n')
    visaSession.query('*OPC?\n')
    frequencyValues = visaSession.query(':SENS:FREQ:DATA?\n')
    measurementValues = visaSession.query(':CALC:DATA:SDAT?\n')
    

    Related commands

    :SENSe:FREQuency:SPAN

    Related commands in the Automation Interface

    ConfigureSweep(Double, Double, Int32, SweepMode) (Gain)

    ConfigureSweep(Double, Double, Int32, SweepMode) (OnePort)

    ConfigureSweep(Double, Double, Int32, SweepMode) (S11)

    ConfigureSweep(Double, Double, Int32, SweepMode) (S21)

    ConfigureSweep(Double, Double, Int32, SweepMode) (SeriesThru)

    ConfigureSweep(Double, Double, Int32, SweepMode) (ShuntThru)

    Back to top Generated by DocFX