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; see 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:
• Send the appropriate CONFigure command to set the desired measurement.
• Modify the settings as required.
• Send the appropriate READ command to measure and return the result.
To get the current measurement data, use the appropriate FETCh command.
:MEASure:DEMod:CONStln?
Title
Measure Constellation
Description
Sets the active measurement to Constellation, sets the default measurement parameters, triggers a new measurement, and returns the EVM (rms), EVM (pk), RCE (rms), RCE (pk), Carrier Frequency, Freq Error, Freq Error, and the Base Station ID. It is a combination of the commands :CONFigure:DEMod CONStln and :READ:DEMod:CONStln? To make a Demodulated Constellation measurement with settings other than the default values, send:
:CONFigure:DEMod CONStln Commands to set desired settings :READ:DEMod:CONStln?
Data is returned as 8 comma-delimited values: EVM (rms) in %, EVM (pk) in %, RCE (rms) in dB, RCE (pk) in dB, Freq Error in MHz, CINR in dB, Base Station ID, and the Sector ID.
Related Command
:READ:DEMod:CONStln? :CONFigure:DEMod CONStln
:MEASure:DEMod:EVSCarrier?
Title
Measure EVM vs. Sub Carrier
Description
Sets the active measurement to EVM vs. Sub Carrier, sets the default measurement parameters, triggers a new measurement, and returns the EVM (rms), EVM (pk), RCE (rms), RCE (pk), Carrier Frequency, Freq Error, Freq Error, and the Base Station ID. It is a combination of the commands :CONFigure:DEMod EVSCarrier and :READ:DEMod:EVSCarrier? To make an EVM vs. Symbol measurement with settings other than the default values, send:
:CONFigure:DEMod EVSCarrier Commands to set the desired settings :READ:DEMod:EVSCarrier?
Data is returned as 8 comma-delimited values: EVM (rms) in %, EVM (pk) in %, RCE (rms) in dB, RCE (pk) in dB, Carrier Frequency in MHz, Freq Error in MHz, Freq Error in ppm, and the Base Station ID.
Sets the active measurement to EVM vs. Symbol, sets the default measurement parameters, triggers a new measurement, and returns the EVM (rms), EVM (pk), RCE (rms), RCE (pk), Carrier Frequency, Freq Error, Freq Error, and the Base Station ID. It is a combination of the commands :CONFigure:DEMod EVSYmbol and :READ:DEMod:EVSYmbol? To make an EVM vs. Symbol measurement with settings other than the default values, send:
:CONFigure:DEMod EVSYmbol Commands to set the desired settings :READ:DEMod:EVSYmbol?
Data is returned as 8 comma-delimited values: EVM (rms) in %, EVM (pk) in %, RCE (rms) in dB, RCE (pk) in dB, Carrier Frequency in MHz, Freq Error in MHz, Freq Error in ppm, and the Base Station ID.
Related Command
:READ:DEMod:EVSYmbol? :CONFigure:DEMod EVSYmbol
:MEASure:DEMod:SFLatness?
Title
Measure Spectral Flatness
Description
Sets the active measurement to Spectral Flatness, sets the default measurement parameters, triggers a new measurement, and returns the absolute delta of the power between adjacent sub carriers in dB. It is a combination of the commands :CONFigure:DEMod SFLatness and :READ:DEMod:SFLatness? To make a Spectral Flatness measurement with settings other than the default values, send:
:CONFigure:DEMod SFLatness Commands to set desired settings :READ:DEMod:SFLatness?
Related Command
:READ:DEMod:SFLatness? :CONFigure:DEMod SFLatness
:MEASure:PFail?
Title
Measure PASS/FAIL
Description
Sets the active measurement to PASS/FAIL, sets the default measurement parameters, triggers a new measurement and returns the PASS/FAIL results. It is a combination of the commands :CONFigure PFail and :READ:PFail? To make a PASS/FAIL measurement with settings other than the default values, send:
:CONFigure PFail Commands to set desired settings :READ:PFail?
Related Command
:CONFigure PFail READ:PFail? FETCh:PFail?
Front Panel Access
Measurements, Pass/Faile Mode
:MEASure:RF:ACPR?
Title
Measure Adjacent Channel Power Ratio
Description
Sets the active measurement to ACPR, sets the default measurement parameters, triggers a new measurement, and returns the power levels for each channel (both absolute and relative). It is a combination of the commands :CONFigure:RF ACPR and :READ:RF:SPECtrum? To make an RF ACPR measurement with settings other than the default values, send:
:CONFigure:RF ACPR Commands to set desired settings :READ:RF:ACPR?
Data is returned as 11 comma-delimited values: The Channel Power in dBm, relative adjacent channel 1 power level, absolute adjacent channel 1 power level, relative adjacent channel 2 power level, absolute adjacent channel 2 power level, relative adjacent channel 3 power level, absolute adjacent channel 3 power level, relative adjacent channel 4 power level, absolute adjacent channel 4 power level, relative adjacent channel 5 power level, absolute adjacent channel 5 power level. The relative adjacent channel power level is in dB and the absolute adjacent channel power level is in dBm.
Related Command
:READ:RF:ACPR? :CONFigure:RF ACPR :FETCh:RF:ACPR?
Front Panel Access
Measurements, RF Measurements, ACPR
:MEASure:RF:PVTime?
Title
Measure Power vs. Time
Description
Sets the active measurement to Power vs. Time, sets the default measurement parameters, triggers a new measurement and returns the Channel Power, Preamble power, burst power of data bursts, and the Crest Factor. It is a combination of the commands :CONFigure:RF PVTime and :READ:RF:PVTime? To make an RF ACPR measurement with settings other than the default values, send:
:CONFigure:RF PVTime Commands to set desired settings :READ:RF:PVTime?
Data is returned as 4 comma-delimited values: The Channel Power in dBm, Preamble power in dBm, burst power of data bursts in dBm, and the Crest Factor in dB.
Related Command
:READ:RF:PVTime? :CONFigure:RF PVTime
:MEASure:RF:SPECtrum?
Title
Measure RF Spectrum
Description
Sets the active measurement to Spectrum, sets the default measurement parameters, triggers a new measurement and returns the Channel Power (RSSI) and Occupied bandwidth measurement. It is a combination of the commands :CONFigure:RF SPECtrum and :READ:RF:SPECtrum? To make an RF Spectrum measurement with settings other than the default values, send:
:CONFigure:RF SPECtrum Commands to set desired settings :READ:RF:SPECtrum?
Data is returned as 2 comma-delimited values: Channel Power (RSSI) in dBm Occupied bandwidth measurement in MHz.