142 N4680 2D Decoded Scan Engine User Guide
Low Contrast Data Matrix Enhancements
Use this setting if you are reading low contrast Data Matrix and dot peened direct 
part mark bar codes. If you are having trouble reading non-dot peen Data Matrix 
bar codes, it may be helpful to turn this setting off by scanning the Low Contrast 
Data Matrix Enhancements Off. Default = Low Contrast Data Matrix Enhance-
ments On.
Data Matrix Message Length
Scan the bar codes below to change the message length. Refer to Message Length 
Description (page 86) for additional information. Minimum and Maximum lengths 
= 1-3116. Minimum Default = 1, Maximum Default = 3116.
Data Matrix Append
This function allows the scanner to append the data from several Data Matrix bar 
codes together before transmitting them to the host computer. When the scanner 
encounters an Data Matrix bar code with the append trigger character(s), it buffers 
*Low Contrast Data Matrix 
Enhancements On
Low Contrast Data Matrix 
Enhancements Off
Reflective Low Contrast Data 
Matrix Enhancements On