Power Meter Operation 2
E4418B Power Meter User’s Guide 25
Running Time
A fully charged battery will typically allow the power meter to be used
continuously for up to three hours with the backlight off and two hours with
the backlight on.
Battery Status
You can check the status of the battery by pressing , ,
, , . The Battery Status display (Figure 2- 1 )
shows the charge condition of the battery represented on an analog meter
scale. Below the analog scale is a message indicating the estimated power
meter running time under battery operation with the present charge level.
Running time can be increased by operating the power meter with the display
backlight turned off (see
“Backlight” on page 26 ).
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”.
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