Keysight N1911A Programming Manual page 125

[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 a resolution of 1, 0.1, 0.01 and 0.001 respectively.
[c] N1912A only.
Example
CONF2:DIFF DEF,1,(@2),(@1)
N1911A/1912A P-Series Power Meters Programming Guide
MEASurement Commands
This command configures the lower
window/upper measurement to make a
difference measurement of
Channel B -Channel A, using the current
sensor range and a resolution of 1 on both
channels.
2
125