Psion Inc 7505BTMC75 ユーザーズマニュアル

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, inte-
gration and illumination.

These parameters represent internal values used by the 2D imager. The “Auto Exposure” pa-
rameter automatically adjusts the “Max Gain”, “Max Integration” and “Max Illumination” 
parameters to produce the best bar code read. Keep in mind that “Auto Exposure” must be 
set to on in order for these parameter values to be automatically adjusted.
Double-tapping on any of these parameters displays an associated dialog box in which an al-
lowable range is displayed: Max Gain – 357 to 7920, Max Integration – 0 to 65535, Max 
Illumination – 0 to 7.

Decoder Timeout
The decoder is a set of algorithms that examine the image and attempt to find the bar codes, 
and then turn the pixels into data that the computer can use—this process takes time. “De-
coder Timeout” limits the amount of time the decoder will spend attempting to decode an 
image, and forces it to stop and grab a new image, which will probably be easier to decode. 

Adaptive Windowing
“Adaptive Windowing” is an advanced technique used to speed up bar code recognition in 
certain applications. This 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.