Agilent Technologies N1911A Programming Manual page 145

Item
resolution
source list
Example
FETC2:DIFF?
Error Messages
• If the last measurement on either channel is not valid error –230,
N1911A/1912A P-Series Power Meters Programming Guide
Description/Default
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.
This channel list specifies the channels used to
calculate the difference.
If unspecified and the current window setup is a
difference measurement then this difference setup
is used, otherwise it defaults to Channel A-B
(N1912A) or A-A (N1911A).
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 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 of 1, 0.1, 0.01 and 0.001
respectively.
3
N1912A only.
"Data corrupt or stale" occurs. A measurement is valid after it has
been initiated. It becomes invalid when either a reset occurs or any
measurement parameter, for example frequency, is changed.
MEASurement Commands
This command queries the difference
measurement on the lower window/lower
measurement.
Range of Values
2
1 to 4
1.0, 0.1, 0.01, 0.001
1
DEF
3
(@1),(@2)
3
(@2),(@1)
(@1),(@1)
3
(@2),(@2)
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2