BTS Master Programming Manual : Spectrum Analyzer Commands : :FETCh Subsystem
 
:FETCh Subsystem
This set of commands returns the most recent measurement data of the active measurement. They will not switch to another measurement.
To make a new measurement, use the INITiate command. To get new measurement data, use the READ or MEASure query commands.
:FETCh:ACPower?
Title
Fetch Adjacent Channel Power Ratio
Description
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 5 comma-separated values: main channel power, lower adjacent channel power, upper adjacent channel power, lower alternate channel power, upper alternate channel power.
Default Unit
Current amplitude units
:FETCh:CHPower:CHPower?
Title
Fetch Channel Power
Description
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 Unit
Current amplitude units
Related Command
:FETCh:CHPower?
:FETCh:CHPower:DENSity?
:FETCh:CHPower:DENSity?
Title
Fetch Channel Power Density
Description
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 Unit
Current amplitude units
 
:FETCh:CHPower?
Title
Fetch Channel Power/Density
Description
This command 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 Unit
Current amplitude units
Related Command
:FETCh:CHPower:CHPower?
:FETCh:CHPower:DENSity?
:FETCh:OBWidth:FREQuency?
Title
Fetch Occupied Bandwidth Frequency
Description
Returns the most recent occupied bandwidth lower frequency and upper frequency.
Data is returned as 2 comma‑separated values: lower frequency and upper frequency in Hz.
Default Unit
Hz
Related Command
:FETCh:CHPower?
:FETCh:CHPower:CHPower?
:FETCh:OBWidth?
Title
Fetch Occupied Bandwidth
Description
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 is measured and the other is set. That is 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 Unit
OBW in Hz, Percent of Power in %, dB Down in dB