VNA Master™Programming Manual : Spectrum Analyzer Commands : :MEASure Subsystem
 
:MEASure Subsystem
These commands take the instrument from its current state, enable the specified measurement, and put the instrument into single sweep mode. They correct any parameters that are invalid given the new measurement state such that a valid measurement can take place. Other settings may be changed. Refer to the documentation of :CONFigure for each measurement. They then initiate the measurement. When the measurement is complete, they return the result.
To make a measurement with settings other than the “default” measurement settings applied by :CONFigure, do the following:
1. Send the appropriate :CONFigure command to set the desired measurement.
2. Modify the settings as required.
3. Send the appropriate :READ command to measure and return the result.
To get the current measurement data, use the appropriate :FETCh command.
 
Measure Adjacent Channel Power Ratio
:MEASure:ACPower?
Description
Sets the active measurement to adjacent channel power ratio, sets the default measurement parameters, triggers a new measurement and returns the main channel power lower adjacent and upper adjacent channel power results. It is a combination of the commands :CONFigure:ACPower and :READ:ACPower? For a description of the default adjacent channel power ratio measurement parameters, refer to :CONFigure:ACPower. To make an adjacent channel power ratio measurement with settings other than the default values, send:
:CONFigure:ACPower
Commands to set desired settings
:READ:ACPower?
Data is returned as 5 comma-separated values: main channel power, lower adjacent channel power, upper adjacent channel power, lower alternate channel power, upper alternate channel power.
Syntax:
:MEASure:ACPower?
Cmd Parameter
NA (query only)
Default Unit
Current amplitude units
Related Command
:CONFigure:ACPower
Front Panel Access
NA
 
Measure Channel Power
:MEASure:CHPower:CHPower?
Description
Sets the active measurement to channel power, sets the default measurement parameters, triggers a new measurement and returns the channel power result. To measure both channel power and channel power density, use :MEASure:CHPower? It is a combination of the commands :CONFigure:CHPower and :READ:CHPower:CHPower? For a description of the default channel power measurement parameters, refer to :CONFigure:CHPower. To make a channel power measurement with settings other than the default values, send:
:CONFigure:CHPower
Commands to set desired settings
:READ:CHPower:CHPower?
Syntax:
:MEASure:CHPower:CHPower?
Cmd Parameter
NA (query only)
Default Unit
Current amplitude units
Related Command
:MEASure:CHPower?
:MEASure:CHPower:DENSity?
:CONFigure:CHPower
Front Panel Access
NA
 
Measure Channel Power Density
:MEASure:CHPower:DENSity?
Description
Sets the active measurement to channel power, sets the default measurement parameters, triggers a new measurement and returns the channel power density result. To measure both channel power and channel power density use :MEASure:CHPower? It is a combination of the commands :CONFigure:CHPower and :READ:CHPower:DENSity? For a description of the default channel power measurement parameters, refer to :CONFigure:CHPower. To make a channel power measurement with settings other than the default values, send:
:CONFigure:CHPower
Commands to set desired settings
:READ:CHPower:DENSity?
Syntax:
:MEASure:CHPower:DENSity?
Cmd Parameter
NA (query only)
Default Unit
Current amplitude units
Related Command
:MEASure:CHPower?
:MEASure:CHPower:CHPower?
:CONFigure:CHPower
Front Panel Access
NA
 
Measure Channel Power/Density
:MEASure:CHPower?
Description
Sets the active measurement to channel power, sets the default measurement parameters, triggers a new measurement, and returns the channel power and channel power density results. It is a combination of the commands :CONFigure:CHPower and :READ:CHPower? For a description of the default channel power measurement parameters, refer to :CONFigure:CHPower. To make a channel power measurement with settings other than the default values, send:
:CONFigure:CHPower
Commands to set desired settings
:READ:CHPower?
Data is returned as 2 comma‑separated values: channel power, channel power density.
Syntax:
:MEASure:CHPower?
Cmd Parameter
NA (query only)
Default Unit
Current amplitude units
Related Command
:MEASure:CHPower:CHPower?
:MEASure:CHPower:DENSity?
:CONFigure:CHPower
Front Panel Access
NA
 
Measure Occupied Bandwidth
:MEASure:OBWidth?
Description
Sets the active measurement to occupied bandwidth, sets the default measurement parameters, triggers a new measurement and returns the occupied bandwidth, percent of power and dB down results. It is a combination of the commands :CONFigure:OBWidth and :READ:OBWidth? For a description of the default occupied bandwidth measurement parameters, refer to :CONFigure:OBWidth. To make an occupied bandwidth measurement with settings other than the default values, send:
:CONFigure:OBWidth
Commands to set desired settings
:READ:OBWidth?
Data is returned as 3 comma‑separated values: occupied bandwidth, percent of power, dB down.
Syntax:
:MEASure:OBWidth?
Cmd Parameter
NA (query only)
Default Unit
For OBW: Hz
For Percent of Power: %
For dB Down: dB
Related Command
:CONFigure:OBWidth
:CONFigure:RF SPECtrum
Front Panel Access
NA