prog.book : ch2meas.fm 57 Mon Feb 15 09:24:37 1999
MEASurement Instructions
MEASure[1|2][:SCALar][:POWer:AC]:DIFFerence:RELative?
[<expected_value>[,<resolution>[,<source list>]]]
HP E4418B/E4419B Programming Guide 2-57
Example
1. The mnemonic DEF means DEFault. This is not equivalent to the DEFault
parameter used in the command sub-systems. The parameters must be entered in
the specified order. If parameters are omitted, they will default from the right.
The parameter DEFault is used as a place holder. Specifying
DEF leaves the
parameter value unchanged.
2. When the measurement result is linear this parameter represents the number
of significant digits. When the measurement result is logarithmic 1 to 4
represents a resolution of 1, 0.1, 0.01 and 0.001 respectively.
source list This channel list specifies between
which channels the difference is
calculated.
If unspecified and the current
window setup is a difference
measurement then this difference
setup is used, otherwise it defaults
to channel A-B.
(@1),(@2)
(@2),(@1)
MEAS1:DIFF:REL? DEF,3,(@2),(@1) This command queries the
upper window’s relative
difference measurement of
channelB-channel A,
using the current sensor
range and a resolution
setting of 3 on both
channels.
Item Description/Default Range of Values
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