HP E4418B Programming Manual page 166

FETCh[1|2][:SCALar][:POWer:AC]:DIFFerence:RELative? [<expected_value>[,<resolution>[,<source
FETCh[1|2][:SCALar][:POWer:AC]:DIFFerence:RELative?
[<expected_value>[,<resolution>[,<source list>]]]
This command is only relevant for the HP E4419B power meter.
This command sets the specified window's measurement function to power
difference with relative mode on, recalculates the measurement and
places the results on the bus. The result is a ratio based measurement and
is expressed in the units defined by UNIT[1|2]:POWer:RATio. The
relative value used is that set by the
CALCulate:RELative:MAGNitude:AUTO command.
Syntax
FETC 1
2
Parameters
Refer to "The Optional Parameters", on page 2-3 for additional details on
the parameters in this command.
HP E4418B/E4419B Programming Guide
:SCAL :POW
expected_value
Space
DEF
Item Description/Default
expected_value The power meter ignores the
(for the
numeric value entered in this
expected
parameter. Any value entered is
power level)
treated like DEF.
resolution A numeric value for the resolution.
If it is unspecified the current
resolution setting is used. If a
value is entered it should
correspond to the current
resolution setting otherwise an
error occurs.
:REL
:AC :DIFF
,
resolution
DEF
MEASurement Instructions
list>]]]
?
,
source list
Range of Values
sensor dependent
1
DEF
2
1 to 4
1.0, 0.1, 0.01, 0.001
1
DEF
2-29