Keysight N1911A Programming Manual page 727

N1911A/1912A P-Series Power Meters
Programming Guide
16 UNIT Subsystem
This chapter explains how the UNIT command subsystem is used to set the power
meter measurement units to Watts and % (linear), or dBm and dB (logarithmic).
UNIT Subsystem 728
UNIT[1]|2|3|4:POWer <amplitude_unit>
UNIT[1]|2|3|4:POWer:RATio <ratio_unit>
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