Unitech PA600 Programming Manual

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6.4. LCD/Backlight related function
There are two backlight controls, screen backlight and keypad backlight. They are
controlled separately. For screen backlight, you can adjust brightness of backlight also.
6.4.1. Screen Backlight Control
Function Description:
This function turns screen backlight on or off.
Function call:
void BacklightOn(BOOL fON)
Parameter(Input)
fON: BOOL: TRUE = turn on screen backlight.
FALSE= turn off backlight.
Return code:
6.4.2. Get Screen Backlight Status
Function Description:
This function returns the status of screen backlight.
Function call:
BOOL GetBacklightStatus(void)
Return code:
TRUE = screen backlight is on.
FALSE = screen backlight is off.
6.4.3. Keypad Backlight Control
Function Description:
This function turns keyoad backlight on or off.
Function call:
void KeypadLightOn(BOOL fON)
Parameter(Input)
fON: BOOL: TRUE = turn on keypad backlight.
FALSE = turn off backlight.
Return code:
6.4.4. Get Keypad Backlight Status
Function Description:
This function returns the status of keyoad backlight.
Function call:
BOOL GetKeypadLightStatus(void)
Return code:
TRUE = keypad backlight is on.
FALSE = keypad backlight is off.

Unitech PA600 Specifications

System Memory

SDRAM memory	64 MB
Flash ROM	128 MB
Flash ROM with WWAN	320 MB

Display

display resolution	240x320 QVGA
display type	Color Transflective TFT
touch screen	Yes

Power

main battery	3.7V 1950mAh Li-Ion Battery Pack
backup battery	One Rechargeable Ni-MH Backup Battery
power source	Main Battery

Operating Environment

operating temperature	32ºF to 122ºF (0ºC to 50ºC)
storage temperature	-4ºF to 140ºF (-20ºC to 60ºC)
relative humidity	5% ~ 95% (non-condensing)

Weight and Dimensions

weight	290g with Battery & Scan Engine
length	149.5 mm
height	26.6 mm