Product specifications

6
Communication system maintenance and repair often
require a technician to troubleshoot in bright daylight or in
the darkness of night. The light sensor on the front panel
of the N934xC HSA senses the ambient light and automati-
cally adjusts the brightness of the display and the back-lit
keys.
The user can also manually set the brightness of the dis-
play, and the brightness of the back-lit keys, so they can be
seen clearly even in any light. The duration of the key light
is settable to provide maximum battery life.
1.1 Adjust the display brightness
Instructions for HSA Keystrokes for HSA
Switch the screen brightness
state from automatic to
manual
[Shift], [System], {Screen
Setting}, {Brightness (Man)}
Rotate the knob to adjust the
display brightness
Switch the screen brightness
state back to automatic
{Brightness (Auto)}
Cover the light sensor with
your finger and watch as the
display brightness adjusts
automatically
1.2 Back-lit key demo
Instructions for HSA Keystrokes for HSA
Turn on key backlight [Shift], [System], {Keypad
Setting}, {Backlight
Brightness}, {Auto}
Adjust backlight flash time
to 5, 10, 15, 30 seconds, or
“always on”
{Backlight off}, {15 s}
Demonstration 1
Auto-brightness and back-lit keys