HP E4418B Programming Manual page 51

Power Meter Remote Operation
Making Measurements
Example 5 - Making a Difference Measurement
The following program segment can be carried out on the HP E4419B. It
queries the lower window to make a difference measurement of
channel A - channel B. The expected power level and resolution
parameters are defaulted, leaving them at their current settings. Some
fine tuning of the measurement is carried out by setting the averaging,
and the trigger delay to off.
Using READ?
ABOR1
ABOR2
CONF2:POW:AC:DIFF DEF,DEF,(@1),(@2)
SENS1:AVER:COUN 1024
SENS2:AVER:COUN 1024
TRIG1:DEL:AUTO OFF
TRIG2:DEL:AUTO OFF
READ2:POW:AC:DIFF?
READ2:POW:AC:DIFF? DEF,DEF,(@2),(@1)(A second READ? query is
sent to make a channel B - channel A measurement using fresh
measurement data.)
Using INITiate and FETCh?
ABOR1
ABOR2
CONF2:POW:AC:DIFF DEF,DEF,(@1),(@2)
SENS1:AVER:COUN 1024
SENS2:AVER:COUN 1024
TRIG1:DEL:AUTO OFF
TRIG2:DEL:AUTO OFF
INIT1:IMM
INIT2:IMM
FETC2:POW:AC:DIFF?
FETC2:POW:AC:DIFF? DEF,DEF,(@2),(@1) (A second FETCh? query is
sent to make a channel B - channel A measurement using the current
measurement data.)
HP E4418B/E4419B Programming Guide 1-27