GW Instek GDM-8200A User Manual - Manual (Page 65)

SYSTEM/DISPLAY CONFIGURATION
65
Display on/off setting (+ key lock)
Background The display can be turned off when not used for a long
time. Note that when this function is used, the panel keys
are also locked except for the Output On/Off key. The
display is turned on by default.
Panel operation 1. Press the Output On/Off key
once. The display will be turned
off and the panel keys become
locked.
2. To enable the display and panel
keys, press the Output On/Off
key again.