Unitech PA500 Programming Manual

- 2
1. INTRODUCTION.................................................................................................................5
1.1 How to download data from scanner....................................................................................................................... 5
1.2 COM definition for PA500............................................................................................................................................ 6
2. USI.DLL – UNITECH SCANNER INTERFACE DLL........................................................... 7
2.1. Register the application to the USI DLL .................................................................................................................. 7
2.2. Unregister the application from the USI.DLL......................................................................................................... 8
2.3. Enable / Disable Scanner............................................................................................................................................. 8
2.4. Reset Scanner................................................................................................................................................................ 8
2.5. Get error code ................................................................................................................................................................ 8
2.6. Returns the system error code.................................................................................................................................. 8
2.7. Get scan data.................................................................................................................................................................. 9
2.8. Get length of scanned data....................................................................................................................................... 10
2.9. Get Symbology name ................................................................................................................................................. 10
2.10. Clear scan data system buffer ............................................................................................................................. 11
2.11. Good read indicator................................................................................................................................................ 11
2.12. Wait for acknowledgement of the last sent command .................................................................................. 11
2.13. Save setting to profiles.......................................................................................................................................... 11
2.14. Save scanner setting into specified file............................................................................................................. 12
2.15. Change scanner setting from specified setting profile................................................................................. 12
2.16. Automatically enable scanner beam with pressing trigger key.................................................................. 12
2.17. Stop auto scanning function................................................................................................................................13
2.18. Check if auto scanning is enable ........................................................................................................................ 13
2.19. Check if Scan2Key.exe program is running or not......................................................................................... 13
2.20. Test if Scan2Key is enabled.................................................................................................................................. 13
2.21. Load/Unload Scan2Key.exe.................................................................................................................................. 13
2.22. Enable/Disable Scan2Key ..................................................................................................................................... 14
2.23. Send scanner command to decoding chip....................................................................................................... 14

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