Agilent Technologies N1911A Programming Manual page 164

2 MEASurement Commands
Example
READ2:DIFF?
Error Messages
• INITiate:CONTinuous must be set to OFF on both channels, otherwise
• If TRIGger:SOURce is set to BUS or HOLD on either channel, error –214,
136
Item Description/Default
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.
source list 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.
error –213, "INIT ignored" occurs.
"Trigger deadlock" occurs.
This command queries difference
measurement on the lower window/upper
measurement.
N1911A/1912A P-Series Power Meters Programming Guide
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)