Using the Battery Option
C
Keysight 53147A/148A/149A Operating and Programming Guide
293
A battery that reads approximately 13.6 VDC when measured with a voltmeter (or
the Battery Voltage reading in the menu display) is fully charged. A battery that
reads 11 VDC or less is at or near the minimum effective charge level.
NOTE
Operating the instrument with the display backlight turned off lengthens the
time the instrument can operate from the batteries. When operating from battery
power, the instrument automatically turns the backlight off after five minutes if
no front-panel keys are pushed, no GPIB commands are received, no
power-sensor head is connected, and/or no signal is applied to any input during
that period.
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