OPERATION
2-19
2.8 Back Light
The LCD display is equipped with an LED back light to
assist in reading the display under poor lighting conditions.
Pressing and holding the [N/-] key for one second in
normal operation can turn on the backlight. The backlight
can be turned off by pressing [N/-] a second time. If the
[N/-] key is not pressed, the back light will be turned off
automatically after a pre-programmed time-out period to
save power.
In addition, the ambient light is sensed and the back light
will be turned on automatically if the ambient light is
below a threshold level. The back light is turned off
automatically when the ambient light exceeds the threshold
level.
See Section 8 for instructions on how to set the light
threshold level.
Note: The LED backlight consumes about 20-30% of the
total average current, when the instrument is idle or not
taking a measurement.
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