Getting Start
nlscan.com
Page 19
Reading Stance is defined as the distance between the Imager front and an object (barcode). It affects image
capturing area and image quality, and thus affects reading performance.
Field of View & Divergence Angle
Theoretical reading stance and barcode: (measurement: mm)
Barcode
Density (mil)
Near (mm)
Far (mm)
Code 39
5
55
115
Code 39
10
30
21.5
PDF417
5
50
105
PDF417
10
30
215
QR Code
10
25
135
QR Code
15
25
210
Data Matrix
10
25
150
Data Matrix
15
20
220
Reading Stance
60
100
140
180
220
36°
71.4
mm
71.4
23.8
23.8
41.6
41.6
0