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Optimizing the Imager
9-10 COPYRIGHT © 2005 MICROSCAN SYSTEMS
Optimizing the Imager
You can program all triggers or each trigger individually so that it is optimized for
symbologies of certain densities and sizes. The table below describes the various con-
figuration settings that can be obtained (A1 through D3) by reading the symbols in
the subsequent tables.
Definitions:
Symbol Density:
Width of the narrowest bar of a linear symbol or the side of an individual
element (cell) of a Data Matrix symbol.
Resolution: The number of pixels available for decoding in a given area.
Decode Try Time: The time spent attempting to decode a given symbol.
Region of Interest:
The pixel area in the Imager that is evaluated during a read
attempt.
Use the tables on the following pages to program your trigger(s) for the fields-of-view and
symbol densities that best match your applications. See
“Optimization Parameters”
for
more detailed explanations of each setting, and for examples of conditions for which you
would use each setting.
Region of
Interest
Fast
Processing
(VGA Mode)
High Density Symbols
Near Field
Low Density Symbols
Far Field
High and Low Density Symbols
Near and Far Field
A1 - SXGA Mode
Near Field Decoding: On
Far field Decoding: On
NF Resolution: 1024 x 640
FF Resolution: 1024 x 640
Decode Try Time: Long
B1 - SXGA Mode
Near Field Decoding: On
Far field Decoding: On
NF Resolution: 1024 x 640
FF Resolution: 1024 x 640
Decode Try Time: Normal
A2 - SXGA Mode
Near Field Decoding: On
Far field Decoding: On
NF Resolution: 832 x 640
FF Resolution: 1024 x 640
Decode Try Time: Normal
B2 - SXGA Mode
Near Field Decoding: On
Far field Decoding: On
NF Resolution: 640 x 512
FF Resolution: 832 x 640
Decode Try Time: Short
A3 - SXGA Mode
Near Field Decoding: On
Far field Decoding: On
NF Resolution: 480 x 480
FF Resolution: 640 x 480
Decode Try Time: Short
B3 - VGA Mode
Near Field Decoding: On
Far field Decoding: On
NF Resolution: 480 x 320
FF Resolution: 480 x 320
Decode Try Time: Short
C3 - VGA Mode
Near Field Decoding: On
Far field Decoding: Off
NF Resolution: 480 x 320
FF Resolution: NA
Decode Try Time: Short
D3 - VGA Mode
Near Field Decoding: Off
Far field Decoding: On
NF Resolution: NA
FF Resolution: 480 x 320
Decode Try Time: Short
C1 - SXGA Mode
Near Field Decoding: On
Far field Decoding: Off
NF Resolution: 1024 x 640
FF Resolution: NA
Decode Try Time: Normal
C2 - SXGA Mode
Near Field Decoding: On
Far field Decoding: Off
NF Resolution: 640 x 640
FF Resolution: NA
Decode Try Time: Normal
D1 - SXGA Mode
Near Field Decoding: Off
Far field Decoding: On
NF Resolution: NA
FF Resolution: 1024 x 640
Decode Try Time: Normal
D2 - SXGA Mode
Near Field Decoding: Off
Far field Decoding: On
NF Resolution: NA
FF Resolution: 832 x 512
Decode Try Time: Normal
Optimization Guide
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