Agilent Technologies N1911A Programming Manual page 268

5 DISPlay Subsystem
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?
240
This command queries the upper scale
limit set on the analog meter in the lower
window.
N1911A/1912A P-Series Power Meters Programming Guide