Agilent Technologies N1996A-503 User Reference page 34

Mode
Meas Off (Spectrum Analyzer) Measurement
Key Path
dBm Sets the amplitude unit for the selected amplitude scale (log/lin) to dBm.
Example
Key Path
dBmV Sets the amplitude unit for the selected amplitude scale (log/lin) to dBmV.
Example
Key Path
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AMPTD Y Scale, More (2 of 2), Y Axis Units
UNIT:POW DBM
AMPTD Y Scale, More (2 of 2), Y Axis Units, dBm
UNIT:POW DBMV
AMPTD Y Scale, More (2 of 2), Y Axis Units, dBmV
Chapter 3