FETCh Commands

This set of commands returns the most recent measurement data of the active measurement. They will not switch to another measurement.

To get new measurement data, use the READ command.

Fetch Adjacent Channel Power Ratio

:FETCh:ACPower?

Returns the most recent adjacent channel power ratio measurement results.

If the instrument is sweeping, it will not return until the sweep is complete. If the instrument is not sweeping and the current data is not valid it will return error -230. This could occur if there was a *RST immediately before the :FETCh? or if a measurement parameter was changed without an :INITiate.

Data is returned as 3 comma-separated values: main channel power, lower adjacent channel power, upper adjacent channel power.

Default Units:

Current amplitude units

 

Fetch Channel Power/Density

:FETCh:CHPower?

Returns the most recent channel power measurement results: channel power and channel power density.

If the instrument is sweeping, it will not return until the sweep is complete. If the instrument is not sweeping and the current data is not valid it will return error -230. This could occur if there was a *RST immediately before the :FETCh? or if a measurement parameter was changed without an :INITiate.

Data is returned as 2 comma-separated values: channel power, channel power density.

Default Units:	Current amplitude units
See Also:	:FETCh:CHPower:CHPower? :FETCh:CHPower:DENSity?

 

Fetch Channel Power

:FETCh:CHPower:CHPower?

Returns the most recent channel power measurement result. It returns only the channel power, not the channel power density. Use :FETCh:CHPower? to get both channel power and channel power density.

Default Units:	Current amplitude units
See Also:	:FETCh:CHPower? :FETCh:CHPower:DENSity?

 

Fetch Channel Power Density

:FETCh:CHPower:DENSity?

Returns the most recent channel power density measurement result. It returns only the channel power density, not the channel power. Use :FETCh:CHPower? to get both channel power and channel power density.

If the instrument is sweeping, it will not return until the sweep is complete. If the instrument is not sweeping and the current data is not valid it will return error -230. This could occur if there was a *RST immediately before the :FETCh? or if a measurement parameter was changed without an :INITiate.

Default Units:	Current amplitude units
See Also:	:FETCh:CHPower? :FETCh:CHPower:CHPower?

 

Fetch Occupied Bandwidth

:FETCh:OBWidth?

Returns the most recent occupied bandwidth measurement results: occupied bandwidth, percent of power and dB down.

One of either percent of power or dB down will be measured and the other will be set. That will be determined by the value set using [:SENSe]:OBWidth:METHod.

If the instrument is sweeping, it will not return until the sweep is complete. If the instrument is not sweeping and the current data is not valid it will return error -230. This could occur if there was a *RST immediately before the :FETCh? or if a measurement parameter was changed without an :INITiate.

Data is returned as 3 comma-separated values: occupied bandwidth, percent of power, dB down.

Default Units:

For OBW: Hz For Percent of Power: % For dB Down: dB

 

Fetch Tracking Generator Absolute Statistics

:FETCh:TGENerator:ABSStats?

Returns the most recent tracking generator absolute statistic measurement results.

Data is returned as 3 comma-separated values: Absolute Max Power, Absolute Min Power, and Absolute Average Power. “---“ is returned for each data that is not valid at that instance.

Default Units:	Current amplitude units
Required Options:	20

 

Fetch Tracking Generator Relative Statistics

:FETCh:TGENerator:RELStats?

Returns the most recent tracking generator relative statistic measurement results.

Data is returned as 3 comma-separated values: Insertion Loss Relative Max Power, Insertion Loss Relative Min Power, and Insertion Loss Relative Average Power. “---“ is returned for each data that is not valid at that instance.

Default Units:	Current amplitude units
Required Options:	20

 

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