Unitech PA500 Programming Manual

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6.2. Scanner Related Functions
To save power, the decoder IC is disabled when scanner is not in use. It can be
enabled through USI functions. Following functions are meaningful only if decode IC is
enabled.
6.2.1. Enable/Disable Scanner trigger key
Function Description:
This function enables/disables trigger keys.
Function call:
void EnableScannerTrigger(BOOL fOn)
Parameter (Input)
fON: BOOL: TRUE = enable trigger keys.
FALSE = disable trigger keys.
Return code:
6.2.2. Turn on/off Scan Engine
Function Description:
This function emulates trigger keys to turn scan engine on or off. It
functions even if trigger keys are disabled.
Function call:
void SetScannerOn(BOOL fON)
Parameter(Input)
fON: BOOL: TRUE = turn scan engine on.
False= turn scan engine off.
Return code: none
6.2.3. Get Trigger keys Status
Function Description:
This function returns enable/disable status of trigger keys.
Function call:
BOOL GetScannerTrigger(void)
Return code:
TRUE = trigger keys are enabled.
FALSE = trigger keys are disabled.
6.2.4. Get Scanner Status
Function Description:
This function returns the status of scan engine, or trigger key.
Function call:
BOOL GetScannerStatus(void)
Return code:
TRUE = scan engine is on, or trigger key is pressed.
FALSE = scan engine is off, or trigger key is released.

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