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:COVerage?
Description
Sets the active measurement to NXDN Coverage, triggers a new measurement and returns the numerical results. It is a combination of the commands :CONFigure:COVerage and :READ:COVerage?
Data are returned as seven comma-separated values in the following order and format:
RSSI (dBm as float) BER (% as float) Mod Fid (% as float) Latitude (radian as float) Longitude (radian as float) UTC Date (month/day/year as char) UTC Time (hour:minute:second as char)
The instrument returns “--” for each value with invalid measurement data.
Cmd Parameters:
NA
Query Parameters:
NA
Range
NA
Default Value
NA
Default Unit
NA
Example
To measure NXDN Coverage numerical data:
:MEASure:COVerage?
Front Panel Access
NA
:MEASure:SIGAnalyzer?
Description
Sets the active measurement to NXDN Analyzer, triggers a new measurement and returns the numerical results. It is a combination of the commands :CONFigure:SIGAnalyzer and :READ:SIGAnalyzer?
Data are returned as seven comma-separated values in the following order and format:
Received Power (dBm as float or Watts as long long int or Volts as long long int) Frequency Error (Hz as float) Mod Fid (% as float) BER (% as float) Symbol Dev (Hz as float) RAN (hex) Symbol Rate Error (Hz as float)
The instrument returns “--” for each value with invalid measurement data.
The received power will be returned in the unit that is selected through the Rx Units button on the front panel or with the command: UNIT:POWer:RX. If the receiver unit has been set to dBm, the received power is returned in dBm. If the unit is set to Watts, the received power is returned in fW (10-15 W). If the unit is set to Volts, the received power is returned in fV (10-15 V).
Note: The squelch setting [:SENSe]:DM:SQUelch will blank out (--) all summary measurements on the instrument display except for Received Pwr when the received power level is lower than the squelch power setting. The received power level is also affected by the Rx Power Offset setting. The query command will still return values even if the instrument display is blanked out.