User's Manual

OPN-2002n DOC ID：SS12xxx

8.1. Print Contrast Signal

PSC 0.45 or higher (70% or higher reflectivity of space and quiet zone)

PCS =

Reflectance of white bar－Reflectance of black bar

Reflectance of white bar

* Be sure to keep the optical window clean without dirt or scratches, or it may have a bad effect on the

reading characteristics.

8.2. Depth of Field and Resolution

Distance in this drawing is measured from the front edge of the scanner.

Figure 7: Depth of Field

Resolution Depth of Field(mm) Symbology PCS Quiet Zone Digits

1.0mm

60 ～ 570

Code 39 0.9 25mm

1 桁

0.5mm

40 ～ 360

Code 39 0.9 18mm

3 桁

0.25mm

40 ～ 220

Code 39 0.9 10mm

8 桁

0.15mm

40 ～ 130

Code 39 0.9 7mm

10 桁

0.127mm

50 ～ 100

Code 39 0.9 5mm

4 桁

Bar Code Sample : Optoelectronics Test Chart, N/W ratio = 1:2.5

Angle : α = 0° β = 15° γ = 0°

Curvature : R = ∞