5.1.4 PowerThis section provides information about current power source and information about the battery gauge. Tap on the battery icon, on the top bar, to bring battery charge andestimated autonomy information.Utility Settings - Battery Power5.1.5 BacklightThis section provides backlight control of the unit.Power: There are two settings -- one for Battery power and another for AC power.The user has the option to select a timer to turn off the backlight if the unit is not in use. This function helps improve the battery autonomy and preserve LCD lifeTo enable the timer, check "Turn off backlight if device is not used for" and with the drop-down menu, adjust the duration of the idle time before the backlight isturned off.Once the timer is active and the backlight turned off, any action on the test set (touch screen, keypad) will turn on the backlight again.Backlight - Battery PowerBacklight - AC PowerBrightness: The user can select the brightness level for Battery and AC operation modes.Backlight - BrightnessMTTplus e_Manual D07-00-096P RevA00Page 17 of 66