Agilent Technologies N1911A Programming Manual page 207

Syntax
Example
CALC1:LIM:FCO?
Reset Condition
On reset, the counter is set to zero for both measurements of the upper
and lower windows.
N1911A/1912A P-Series Power Meters Programming Guide
:LIM
CALC
1
2
3
4
:FCO ?
This command queries the number of
limit failures on the upper window/upper
measurement.
CALCulate Subsystem 3
179