:SENSe:FREQuency:STARt

Description

This command gets or sets the start frequency of a sweep. If the start frequency is altered, the center frequency the frequency span and the stop frequency are changed accordingly.

If the specified parameter is out of the allowable setup range, the minimum value (if the lower limit of the range is not reached) or the maximum value (if the upper limit of the range is exceeded) is set.

Syntax Parameter
:SENSe<ch>:FREQuency:STARt { <numeric> | MINimum | MAXimum }
Parameters accepted format allowed suffixes possible Errors description
<ch> { 1 | empty } none Invalid channel index Currently only one channel is supported. Empty means 1 is used as default.
{ <numeric> | MINimum | MAXimum } Range from Min. frequency to Max. frequency Hz Numeric data error The frequency value, at which the sweep should start.
Note

MHZ is interpreted as Milli Hz (1E-3) and MAHZ is interpreted as Mega Hertz (1E6).

Presets

For presets please refer to Measurement Modes.

Sample usage

Configure and start a sweep measurement with start frequency of 1kHz and stop frequency of 4MHz.

Input:

var visaSession = new TcpipSocket(VISA_RESOURCENAME);
visaSession.RawIO.Write(":SENS:FREQ:STAR 1kHz\n");
visaSession.RawIO.Write(":SENS:FREQ:STOP 4MAHz\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();

:SENSe:FREQuency:STOP

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)

StartFrequency (Gain)

StartFrequency (OnePort)

StartFrequency (S11)

StartFrequency (S21)

StartFrequency (SeriesThru)

StartFrequency (ShuntThru)