Charging Times; Backlight; Battery Status - Agilent Technologies E4418B User Manual

Power Meter Operation
Battery Operation (Option 001)
Figure 2-1: Battery Status
When the power meter is running on battery power and there are less than 10 minutes
of run-time remaining, the message "Battery Low" appears at the top of the screen. In
addition, a pop up window appears every minute with the message "Battery Power
Low".

Charging Times

The battery charges automatically when the power meter is connected to an ac source.
From an empty state the battery is fully charged in less than 2 hours. After
approximately 50 minutes the battery has enough charge to enable 1 hour of operation
with the backlight on. After approximately 35 minutes the battery has enough charge
to enable 1 hour of operation with the backlight off.

Backlight

When you are operating the power meter under battery power you can turn the display
backlight off or on, or set it to timed mode. In timed mode the display backlight turns
off 10 minutes after the last key press - the display can be turned on again by pressing
any key.
Working with the backlight off reduces the drain on the battery and increases the
operating time available by approximately 50%. The display can be comfortably read
in ambient daylight with the backlight off.
System
To access the backlight menu press , , , . Use
More Service Battery
Inputs
the softkeys on the menu to select either , , or .
On Off Timed
2-4 Agilent E4418B User's Guide