VNA Master™Programming Manual : Vector Voltmeter Commands : :FETCh:VVM Subsystem
 
:FETCh:VVM Subsystem
This subsystem contains commands to fetch the VVM reference data and relative data.
:FETCh:VVM Subsystem Commands 
Keyword
Parameter Data or Units
:FETCh
 
:VVM
 
:REFerence
 
Data
:FETCh:VVM:DATA?
Description
Query only. Returns the most recent VVM measurement results. Data is returned as 2 or 4 comma‑separated values depending upon the measurement type, measurement format, measurement mode, port, and the reference setting. A “–” is returned for any data that is not valid at that instance.
VVM Measurement Results  (Sheet 1 of 2)
If
Then
Data Values
If the measurement type is Insertion, and if the measurement mode is CW,
then data is returned as 4 comma‑separated values
Amplitude
Phase
Reference Amplitude
Reference Phase.
If the measurement type is Insertion, and if the measurement mode is CW with save new reference set,
then data is returned as 4 comma‑separated values
Relative Amplitude
Relative Phase
Reference Amplitude
Reference Phase.
If the measurement type is Return, and if the measurement mode is CW, and if format is set to dB,
then data is returned as 4 comma‑delimited values
Amplitude
Phase
Reference Amplitude
Reference Phase.
If the measurement type is Return, and if the measurement mode is CW with save new reference set, and if format is set to dB,
then data is returned as 4 comma‑delimited values
Relative Amplitude
Relative Phase
Reference Amplitude
Reference Phase.
If the measurement type is Return, and if format is set to VSWR,
then data is returned as 2 comma‑delimited values
VSWR
Reference VSWR.
If the measurement type is Return, and if the measurement mode is CW with save new reference set, and if format is set to VSWR,
then data is returned as 2 comma‑delimited values
Relative VSWR
Reference VSWR.
If the measurement type is Return, and if the measurement mode is CW, and if format is set to Impedance,
then data is returned as 4 comma‑delimited values
Real
Imaginary
Reference Real
Reference Imaginary.
If the measurement type is Return, and if the measurement mode is CW with save new reference set, and if format is set to Impedance,
then data is returned as 4 comma‑delimited values
Relative Real
Relative Imaginary
Reference Real
Reference Imaginary.
If the measurement mode is Table with save new reference set,
then data is returned as 4 comma‑separated values
Amplitude
Phase
Relative Amplitude
Relative Phase.
Syntax
:FETCh:VVM:DATA?
Cmd Parameter
NA (query only)
Query Response
NA (comma separated values)
Example
To fetch the VVM data:
:FETCh:VVM:DATA?
Front Panel Access
NA