Keysight N1911A Programming Manual page 251

Reset Condition
On reset, the upper scale limit is set to 20 dBm.
Query
DISPlay[:WINDow[1]|2]:METer:UPPer? [MIN|MAX]
The query returns the current setting of the analog meter's upper scale limit or the
value associated with MIN and MAX. The format of the response is <NR3>. The units
in which the results are returned is dependent on the current setting of
UNIT:POWer and CALCulate:RELative:STATe as shown in the previous table.
Query Example
DISP:WIND2:MET:UPP?
N1911A/1912A P-Series Power Meters Programming Guide
This command queries the upper scale limit
set on the analog meter in the lower window.
DISPlay Subsystem 5
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