HP E4418B Programming Manual page 440

Query
UNIT[1|2]:POWer:RATio?
The query returns the current setting of the ratio measurement units.
Query Example
Error Message
If this command is used with an HP E4418B, error -113, "Undefined
header" occurs.
HP E4418B/E4419B Programming Guide
UNIT2:POW:RAT?
UNIT[1|2]:POWer:RATio <ratio_unit>
This command queries which ratio
measurement units are being used
on the lower window. It also
queries the default units for any
relevant SENSe2 command.
UNIT Subsystem
13-7