Keysight Technologies EPM-P Series Programming Manual page 264

5 DISPlay Subsystem
Reset condition
On reset, the contrast is not affected.
Query
DISPlay:CONTrast? [MIN|MAX]
The query returns the current setting of the contrast or the values associated with
MIN and MAX. The response format is <NR3>.
Query example
DISP:CONT?
264
This command queries the current
contrast setting.
Keysight EPM-P Series Programming Guide