Agilent Technologies ESA-E Series Programmer's Manual page 237

Language Reference
READ Subsystem
READ Subsystem
READ subsystem commands apply only to measurements found in the
MEASURE
menu. READ commands do not preset the measurement t o
the factory default values, as do the MEASurement subsyste m
commands. Instead, they use settings from the last measurement .
Read commands initiate the measurement and put valid data into th e
output buffer. Other SCPI communication is blocked until the
measurement is complete. However, if a measurement other than th e
current one is specified, the instrument will switch to that
measurement before it initiates the measurement and returns results .
Measure Main, Lower, and Upper Channel Powe r
READ :ACPower ?
This command returns scalar results of main channel power, lower
channel power (relative), and upper channel power (relative) .
Remarks : The main channel power is returned in the curren t
amplitude units, and the lower and upper channe l
results are always returned in dB . The results are
returned in a comma-separated list .
Measure Main Channel Power
READ :ACPower :MAIN ?
This command returns the value of main channel power in the current
amplitude units .
Front Panel
Access : MEASURE, ACP
Measure Lower Channel Powe r
READ :ACPower :LOWer ?
This command returns the value of the lower channel power relative t o
the main channel power, in dB.
Measure Upper Channel Power
READ :ACPower :UPPer ?
This command returns the value of the upper channel power relative t o
the main channel power, in dB .
Chapter 5 5-77