General Information : LTE Commands : :READ Subsystem

:READ Subsystem
This set of commands combines the ABORt, INITiate and FETCh commands. It aborts any current triggering sequence and sets the trigger state to idle. It then initiates a new active measurement (i.e. begins the collection of new data). When the measurement is complete, it returns the result. These commands will not switch to another measurement.
To get the current measurement data, use the FETCh command.
:READ:DEMod:CONStln?
Title
Read Constellation
Description
Triggers a new Constellation measurement and returns the results. The Constellation measurement must be the active measurement (specified by :CONFigure:DEMod CONStln. The current measurement can be queried using the command :CONFigure?
Data is returned as 8 comma-delimited values: EVM (rms) in %, EVM (pk) in %,
Ref Signal (RS) Power in dBm, Sync Signal (SS) Power in dBm, Carrier Frequency
in MHz, Freq Error in Hz, Freq Error in ppm, and the Cell ID. “--” is returned for each data that is not valid at that instance.
Front Panel Access
Measurements, Modulation, Constellation
:READ:PFail?
Title
Read PASS/FAIL
Description
Triggers a new PASS/FAIL measurement and returns the results. It is a combination of the commands :ABORT; :INITiate; FETCh:PFail? The PASS/FAIL measurement must be active. The current measurement can be queried using :CONFigure?
Related Command
MEASure:PFail?
:CONFigure PFail
FETCh:PFail?
:CONFigure PFail
Front Panel Access
Measurements, Pass/Fail Test
:READ:RF:ACLR?
Title
Read Adjacent Channel Leakage Ratio
Description
Triggers a new Adjacent Channel Leakage Ratio measurement and returns the results: Power levels for each channel (both absolute and relative). 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 11 comma-separated values: Main channel power, Left alternate channel power - relative, absolute , Left adjacent channel power - relative, absolute,
Main channel power - relative,absolute, Right adjacent channel power - relative, absolute, Right Alternate channel power - relative, absolute.
Default Unit
dBm
Front Panel Access
Measurements, RF, ACLR
:READ:RF:SEM?
Title
Read RF Spectral Emmision Mask
Description
Triggers a new RF Spectral Emission Mask measurement and returns a PASS or FAIL result. It is a combination of the commands :ABORT; :INITiate; FETCh:RF:SEM?
The current measurement can be queried using :CONFigure?
Front Panel Access
Measurements, RF, Spectral Emission Mask
:READ:RF:SPECtrum?
Title
Read RF Spectrum
Description
Triggers a new RF Spectrum measurement and returns the results: Channel Power and Occupied BW measurement. It is a combination of the commands :ABORT; :INITiate; FETCh:RF:SPECtrum? The current measurement can be queried using :CONFigure?
Data is returned as 2 comma-delimited values: Channel Power in dBm and Occupied bandwidth measurement in MHz.
Related Command
:FETCh:RF:SPECtrum?
:CONFigure:RF SPECtrum
:MEASure:RF:SPECtrum?
Front Panel Access
Measurements, RF, Channel Spectrum
 
 

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