Positive And Negative Image Of Barcodes (1D Code Common) - Opticon NLV-5201 User Manual

9.2.2

Positive and Negative Image of Barcodes (1D code common)

Normally, the barcode is printed in black on white background, but there a case with white on black
background. Black on white background is called normal (positive) barcode and white on black
background is called negative barcode.
Positive Image of Code 128
Following are the positive and negative barcode reading setting.
Code Item
Positive and
Negative
1D
Image of
Barcodes
* It is strongly recommended to enable only the required codes and options for best reading performance.
NLV-5201 User's Manual
1st
Command
Q0
Decode positive bar codes only.
[DLA Q1
Decode negative bar codes only.
Q2
Decode positive bar codes and negative bar codes.
Negative Image of Code 128
Description
Chapter-9
Code Options
Default

97