50
GPX 5000 Range
GPX 4800 Range
Factory Preset
51
Off, 1–8
Off, 1–8
2
Battery Test
Viewing the battery voltage.
LCD Backlight
In low lighting conditions the LCD can be backlit. You can
select how long the backlight stays on for once activated.
Between settings one and six the time-out period is in
increments of 10 seconds.
1 – 10 seconds
2 – 20 seconds
6 – 60 seconds
7 – 120 seconds
8 – Always On
The time-out period is the length of time that the light will
stay on after the last alteration is made on either Function
Select or Setting control.
The light will come on again as soon as either control
is moved.
If you are detecting in normal daylight you can select OFF to
preserve battery power.
The Battery Test screen allows you to view the current voltage
of the battery. This screen can be viewed at any time.
When the battery is low a series of alarm signal pulses are
given at one minute intervals.
Note: The Battery Test screen will automatically return to the
list of functions after seven seconds.
For more information on your GPX Series battery see Charging
the Battery (pp. 18–19) and Taking Care of Your Battery (p. 21).
Lithium-ion batteries have the advantage of holding power through most of
the discharge cycle, before going into a rapid shutdown.
Example Screenshot
0
5
5.5
6
6.5
7
7.5
8
8.5
2 4 6 8 10 12 14 16
Shutdown Voltage (7.1V)
Low Battery Alarm (7.3V)
Approximate Time (Hours)
Voltage (Volts)
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