prog.book : chapter1.fm 39 Mon Feb 15 09:24:37 1999
Power Meter Remote Operation
Using Sensor Calibration Tables
HP E4418B/E4419B Programming Guide 1-39
Making the Measurement
To make the power measurement, set the power meter for the frequency of
the signal you want to measure. The power meter automatically sets the
calibration factor. Use either the INITiate,FETCh? or the READ? query
to initiate the measurement as shown in the following program segments:
INITiate Example
ABORt1
CONFigure1:POWer:AC DEF,1,(@1)
SENS1:CORR:CSET1:SEL "HP8481A"
SENS1:CORR:CSET1:STAT ON
SENSe1:FREQuency 500KHZ
INITiate1:IMMediate
FETCh1?
READ? Example
ABORt1
CONFigure1:POWer:AC DEF,2,(@1)
SENS1:CORR:CSET1:SEL "HP8481A"
SENS1:CORR:CSET1:STAT ON
SENSe1:FREQuency 500KHZ
READ1?
Note If the measurement frequency does not correspond directly to a
frequency in the sensor calibration table, the power meter
calculates the calibration factor using linear interpolation.
If you enter a frequency outside the frequency range defined in the
sensor calibration table, then the power meter uses the highest or
lowest frequency point in the sensor calibration table to set the
calibration factor.
To find out the value of the calibration factor being used by the
power meter to make a measurement, use the query command:
[SENSe[1]]|SENSe2:CORRection:CFAC? The response may be
an interpolated value.
To find out the value of the reference calibration factor being used,
use the commands:
CALibration[1|2]:RCFactor?
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