Keysight N1911A Programming Manual page 134

2 MEASurement Commands
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[a] 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.
[b] 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.
Example
FETC2:POW:AC?
Error Messages
– If the last measurement is not valid error –230, "Data corrupt or stale" occurs.
– If the expected_value and resolution parameters are not the same as the
134
Description/Defaul t
The channel which the command is implemented on. If
unspecified the current window setup is used. However, on the
N1912A, if the window shows a ratio or difference
measurement, the upper window defaults to Channel A and
the lower window to Channel B.
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.
current expected value and resolution setting on the specified window,
error –221, "Settings conflict" occurs.
N1911A/1912A P-Series Power Meters Programming Guide
Range of Values
(@1)
(@2) (N1912A only)
This command queries the lower window/
upper measurement result.