EXFO PM-1100 Optical Power Meter - Manual (Page 104)

Remote Control Commands
94 PM-1100
Product-Specific Commands—Description
SYSTem:VERSion?
Description This query returns the current system software version.
Syntax SYST:VERS?
Response “EXFO E.O. Engineering PM-1100 Vxx.xx”, where xx.xx is the
current product version.
Note The *IDN? and SYST:VERS? queries are equivalent. They give the
same result.
UNIT:POWer
Description This command changes the measurement display units.
Syntax UNIT:POW
Parameters The parameter can be
WATT measured value displayed in watts (pw, nw, μw, or
mw);
DB measured value displayed in dB relative to the current
reference;
DBM measured value displayed in dBm; or
DWATT measured value displayed in watts relative to the
current reference.
Example UNIT:POW DBM