Psion Teklogix 7535 G2 User Manual page 220

Chapter 5: Configuration
Imager
Advanced Options
Min Scan Duration
This parameter defines the minimum amount of time in seconds that the imager will
scan when the trigger is pressed and held down. When the duration expires without
a decode, the imager will stop scanning and a bad decode will be signaled.
Note: The actual scan duration when the trigger is pressed relies on the value
assigned to Captures Per HW Trigger, below.
Captures Per HW Trigger
This parameter determines the number of images captured in each scan attempt. If
the Min Scan Duration has not yet expired after the configured number of captures,
and the scan button is still held down, the same number of images will be captured
again. Once the Min Scan Duration time expires, and the configured number of
images is captured and no bar code is decoded, a bad decode is signaled.
Auto Exposure
Important:
Setting this parameter to on allows the imager to make automatic gain, integration
and illumination adjustments based on ambient light before capturing the bar code.
If the adjustment is insufficient, further adjustments are made automatically before
another image is captured.
Fast Converge
Note: "Auto Exposure" must be set to 'on' in order for this parameter
to function.
Keep in mind that while this parameter can improve imager performance,
"Fast Converge" increases battery power consumption.
Setting this parameter to ON speeds the "Auto Exposure" process. It allows the
imager to rapidly snap a number of bar code capture attempts while finding ideal
values for gain, integration and illumination.
188 Psion Teklogix 7535 G2 Hand-Held Computer User Manual
This parameter value should only be changed by qualified Psion
Teklogix personnel. It should be left at the default value, ON.