Boonton 4530 Peak Power Meter User Manual - Manual (Page 83)

4-9
Boonton Electronics Chapter 4
4530 Series RF Power Meter Remote Operation
FETCh:ARRay:AMEAsure:POWer
Description: Returns an array of the current automatic statistical measurements performed on a sample
population. Measurements performed are: long term average, peak and minimum powers,
peak-to-average ratio, power at each marker, statistical percent at each marker, and the
sample population size in megasamples. Note the peak-to-average ratio is returned in dB
for log units, and percent for linear units. Depending on the setting of
MARKer:MODe ,
either the power or the percent can be the marker position, and the opposite item will be the
calculated value at that position.
Syntax: FETCh[1|2]:ARRay:AMEAsure:POWer?
Returns: Pavg, Ppeak, Pmin, PkToAvgRatio, Pwr@Mrk1, Pwr@Mrk2, Pct@Mrk1, Pct@Mrk2, SampCnt
Valid Modes: Statistical mode only
4.5.4 READ Queries
The purpose of the READ? group of queries is to initiate a measurement cycle, acquire data, and return specific
measurement data. READ? performs the initiation, data acquisition, postprocessing, and data output portions of the
measurement. READ? is equivalent to ABORting any operation in progress, INITiating a new measurement, then
FETChing the data when it is ready. READ? generally does not return data unless acquisition is complete. Since
READ? INITiates a new measurement every time it is issued, READ? queries should not be used for free running data
acquisition (
INITiate:CONTinuous ON) - in this case, use FETCh queries instead. For CW and Modulated modes, the
measurement is generally considered complete when the integration filter (see SENSe:FILTer ) is filled. In Pulse mode,
the measurement is considered complete when all the number of complete traces specified by the SENSe:AVERage
command have been acquired and averaged together. In statistical mode, the measurement is considered complete
when the number of samples specified by
TRIGger:CDF:COUNt has been gathered.
READ:CW:POWer
Description: Performs a single measurement and returns the average reading of the specified channel in
power units.
Syntax: READ[1|2]:CW:POWer?
Returns: power in <dBm, Watts>
Valid Modes: CW, Modulated and Statistical modes
Special Case: If in ratiometric mode, reading will be in units of dBr (log) or Percent Power (linear).
READ:CW:VOLTage
Description: Performs a single measurement and returns the average reading of the specified channel in
voltage units.
Syntax: READ[1|2]:CW:VOLTage?
Returns: voltage in <dBuV, dBmV, dBV, Volts>
Valid Modes: CW, Modulated and Statistical modes
Special Case: If in ratiometric mode, reading will be in units of dBr (log) or Percent Voltage (linear).