Technical data
MEASurement Commands 2
N1911A/1912A P-Series Power Meters Programming Guide 153
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.
Example
resolution A numeric value for the resolution. If 
unspecified the current resolution setting is 
used.
1 to 4
2
1.0, 0.1, 0.01, 0.001
DEF
1
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),(@2)
3
(@2),(@1)
3
(@1),(@1)
(@2),(@2)
3
Item Description/Default Range of Values
MEAS2:DIFF? This command queries the 
difference measurement on the 
lower window/upper measurement.










