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Psion Teklogix 7530 G2 Hand-Held Computer User Manual 191
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.