Agilent Technologies E4418B User Manual page 152

Menu Reference
Front Panel Menu Reference "System/Inputs" Menu
Press this softkey to turn the display backlight permanently On.
Backlight Off
u
Press this softkey to set the display backlight to be Off while the
power meter is operating under battery power.
Backlight Timed
u
Press this softkey to select the Backlight Timed mode. When the
power meter is in this mode and is operating under battery power, the
display backlight turns off 10 minutes after the last key press. To turn
the backlight back on, press any key.
Done
u
Pressing this softkey returns the display to the previous screen.
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