20
Figure 3.16: Barcode test
Reading 1D barcode
Adjust the terminal barcode reading angle or the distance between barcode with terminal. Let the width of the scan line
appropriately larger than the width of the barcode (about 4mm), in order to get the best reading.
Right and wrong way of reading:
Reading 2D barcode
The best reading distance and angle:
A.
Adjust the terminal focus lights aiming to the center of 2D barcode.
B.
Adjust the reading distance between the terminal with barcode around 5-20 cm.
C.
Adjust the reading angle:
z
The relative pitch angle (the
α
) with barcode and terminal is less than 45 degrees (0 is the best)
z
The relative skew angle (the
γ
) with barcode and terminal is less than 45 degrees (5~20 is the best)
z
The relative roll angle (the
β
) with barcode and terminal can be any angles (0~360 degrees).
