Psion Teklogix 7530 G2 user manual Adaptive Windowing, Constant Illumination

Chapter 5: Configuration

Imager

Adaptive Windowing

Adaptive Windowing is an advanced technique used to speed up bar code recognition in certain applications. The ‘Adaptive Windowing’ parameter automatically reduces the size of the window to the user-programmed window size when it successfully decodes (which reduces decode time the next time it is used), but increases it to the full size window (1280x1024 for SX5303) on a failed decode.

Note: This feature assumes that you have reached an understanding about how the device operates in your application, and that, after a learning period, operators will get used to using the imager in one particular way. It also assumes that a trained operator will usually only have near miss scenarios.

Constant Illumination

Constant Illumination is used to reduce the intrusiveness of the device’s illumination on the observer. Instead of the illumination turning on and off every time the device attempts a decode (2-4 times per second), the illumination stays on from the time the trigger is pulled until a decode is successful. This feature is useful in low light environments, since it will also reduce the distraction that the illumination can have on nearby coworkers.

5.11.5.3 Code 39

Enabled

Set this parameter to on to enable “Code 39”.

Field Size/Chars

Refer to page 148 for details.

5.11.5.4 Code 128

Enabled

Set this parameter to on to enable “Code 128.

Field Size/Chars

Refer to page 148 for details.

Psion Teklogix 7530 G2 Hand-Held Computer User Manual 191