N4680 2D Decoded Scan Engine User Guide 39
Note: A bar code needs only to be touched by the centering window in order to be read. ?It 
does not need to pass completely through the centering window.
Scan Presentation Centering On, then scan one of the following bar codes to 
change the top, bottom, left, or right of the centering window. Then scan the per-
cent you want to shift the centering window using digits on the inside back cover of 
this manual. Scan Save. Default Presentation Centering = 40% for Top and Left, 
60% for Bottom and Right.
0
Bar Code 1
Bar Code 2
10 20 30 40 50 60 70 80 90 100%
100
90
80
70
60
50
40
30
20
10
0%
Presentation Centering On
* Presentation Centering Off
Top of Presentation 
Centering Window 
Bottom of Presentation 
Centering Window