Backlight

Set the power management timers for the display and keyboard backlights. Set the display brightness for battery and external power.

IMPORTANT – When the backlight timer expires, the display backlight and the display are OFF, as is the keypad backlight. This is the System Idle state, there are no other Idle states.

Battery Power

Setting

Default

 

 

Turn off backlight if device not used for

Enabled

 

 

Timer

30 seconds

 

 

Turn on backlight when a button is pressed or the

Enabled

screen is tapped

 

 

 

Note: Turn on backlight when a button is pressed or the screen is tapped: This affects wake-up from Suspend only. With this unchecked, the device does not wake-up from Suspend on touch or key press. It will wake-up on other events or Power key press.

When the MX9 is on battery power and the backlight timer expires, the display and the backlights for the display and keypad are turned off. Default value is 30 seconds and both the check boxes are enabled. Adjust the settings and tap OK to save the changes. The changes take effect immediately.

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