:SENSe:FREQuency:STARt

Description

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

• Command
• Query

Syntax	Parameter
:SENSe<ch>:FREQuency:STARt	<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	none	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

default value
<numeric>	10kHz

Sample usage

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

• C#
• Python

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();

Related commands

:SENSe:FREQuency:STOP

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)

StartFrequency (Gain)

StartFrequency (OnePort)

StartFrequency (S11)

StartFrequency (S21)

StartFrequency (SeriesThru)

StartFrequency (ShuntThru)