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WORKABOUT PRO Hand-Held Computer With Windows Mobile 6 Classic & Professional User Manual 187
Chapter 5: Settings
Imager
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 without successful decode.
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
The value assigned to this parameter determines the number of captures the imager
device will take while the imager's internal hardware trigger is held down.
Note: This parameter, together with “Min Scan Duration”, determines the
actual scan duration. When the scan trigger is pressed and held down, the
driver starts a timer based on the value of “Min Scan Duration” and also
sends a command to emulate the hardware trigger. When completed, if the
time has not yet expired, it will send another command to the imager
device, forcing the imager to flash again using the value assigned to
“Captures Per HW Trigger”.
Auto Exposure
Important: This parameter value should only be changed by qualified Psion
Teklogix personnel. It should be left at the default value – ‘on’.
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.