2 MEASurement Commands
154 N1911A/1912A P-Series Power Meters Programming Guide
MEASure[1]|2|3|4[:SCALar][:POWer:AC]:DIFFerence:
RELative? [<expected_value>[,<resolution>[,<source list>]]]
This command sets the specified window’s measurement function to
difference mode with relative mode on, aborts, configures then initiates
both Channel A and B, calculates the difference measurement result and
places the result on the bus. The result is a ratio based measurement and
is expressed in the units defined by UNIT[1]|2|3|4:POWer:RATio. The
relative value used is that set by the
CALCulate:RELative:MAGNitude:AUTO command.
Syntax
Parameters
Refer to “Optional Parameters” on page 90 for additional details on the
parameters in this command.
:POW
:AC
:SCAL
:DIFF
:REL
?
Space
expected_value
DEF
resolution
,
DEF
source list
,
MEAS
1
2
3
4
Item Description/Default Range of Values
expected_value
(for the expected
power level)
The power meter ignores the numeric value
entered in this parameter. Any value entered is
treated like DEF.
sensor dependent
DEF
1
resolution A numeric value for the resolution. If
unspecified the current resolution setting is
used.
1 to 4
2
1.0, 0.1, 0.01, 0.001
DEF
1