: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; 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:CCPData?

Title

Read Modulation Control Channel Power Data

Description

Sets the active measurement to Control Channel Power, sets the default measurement parameters, triggers a new measurement, and returns the measured values: RS_POWER, PSS_POWER, SSS_POWER, BCH_POWER, CFI_POWER, RS_TOTAL_POWER, PSS_TOTAL_POWER, SSS_TOTAL_POWER, BCH_TOTAL_POWER, CFI_TOTAL_POWER, TOTAL_POWER, TOTAL_CHANNEL_POWER. Data returned is the same for Bar Graph or Table mode. The Control Channel Power measurement must be the active measurement.

Front Panel Access

Measurements, Modulation, Control Channel Power

:MEASure:DEMod:CONStln?

Title

Measure 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

:MEASure:RF:ACLR?

Title

Measure Adjacent Channel Leakage Ratio

Description

Sets the active measurement to adjacent channel power ratio, sets the default measurement parameters, triggers a new measurement and returns the main channel(s) power, and adjacent channel(s) power. It is a combination of the commands :CONFigure:RF ACLR and :READ:RF:ACLR? Refer to “:READ:RF:ACLR?” for a description of the returned data.

Default Unit

dBm

Front Panel Access

Measurements, RF, ACLR

:MEASure:RF:PVTime?

Title

Measure Power vs. Time (Frame)

Description

Sets the active measurement to Power vs. Time (Frame), sets the default measurement parameters, triggers a new measurement and returns the Total Frame Power, DwPTS Power, Transmit Off Power, Cell ID, Timing Error, Sub-Frame Power 1, 2, ...10. “--” is returned for each data that is not valid at that instance. It is a combination of the following commands: :CONFigure:RF:PVTime and :READ:RF:PVTime?

Front Panel Access

Measurements, RF, Power vs. Time

:MEASure:RF:SEM?

Title

Measure Spectral Emission Mask

Description

Sets the active measurement to Spectral Emission Mask and returns a PASS or FAIL result.

Front Panel Access

Measurements, RF, Spectral Emission Mask

:MEASure:RF:SPECtrum?

Title

Measure RF Spectrum

Description

Sets the active measurement to Channel Spectrum, sets the default measurement parameters, triggers a new measurement and returns the Channel Power and Occupied Bandwidth measurement results. It is a combination of the following command :CONFigure:RF SPECtrum and :READ:RF:SPECtrum?. Data is returned as 2 comma-delimited values: Channel Power in dBm and Occupied bandwidth in MHz.

Front Panel Access

Measurements, RF, Channel Spectrum

 

 

Copyright 2010 Anritsu Company
	Anritsu Company
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