Unitech PA500 Programming Manual

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6. SysIOAPI.DLL
This DLL provide hardware relative API for user to control scanner, LED, back-light and PC
card slot. API functions are provided through DLL to assist programmer to write application
for PA500.
Note : For PA500 programming, it need to dynamically load DLL for using Unitech built-in DLL (Unitech
will not provide *.H and *.LIB for compiler), please refer to Chapter 7 for programming guide.
6.1. Keypad Related Functions
6.1.1. Disable/enable power button
Function Description:
To enable / disable power button
Function call:
VOID DisablePowerButton (BOOL)
Parameter (Input)
TRUE = Disable power button.
FALSE = Enable power button.
Return code:
None
6.1.2. Get CAPS lock status
Function Description:
To check if CAPS is lock or unlock
Function call:
BOOL GetCapsLock (void)
Return code:
BOOL: TRUE : CAPS lock
FALSE : CAPS unlock
6.1.3. Get SHIFT status
Function Description:
To check if SHIFT key is lock or not
Function call:
BOOL GetShift (void)
Return code:
TRUE : Shift lock
FALSE : Shift unlock

Unitech PA500 Specifications

System Memory

SDRAM	64 MB
Flash ROM	64 MB

Display

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

Laser Bar Code Scanner

scan rate	104 scans/sec ± 12 scans/sec
scan angle default	47°±3°
scan angle reduced	35°±3°

Power

main battery voltage	3.7 V
main battery capacity	2200 mAh
rechargeable time	3.5 hours

Operating Environment

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

Weight and Dimensions

weight with battery and scan engine	Under 213 g
length	126 mm
height	23 mm