Casio IT-800 Series Hardware Manual page 80

Maximum Readable Digits
In this chapter, the definition for maximum no. of readable digits and each maximum no. of digits of
the conventional symbologies are explained. See Table 4.50.
All the digits in the table are reference and may vary according to conditions including barcode print
quality and surrounding environment.
• Definition
Figure 4.6
Table 4.50 Maximum no. of readable digits for conventional 1D symbologies
Max. scanning
Resolution scanning
(mm) range defined
(mm)
6mil 115
(0.15)
8mil 150
(0.20)
10mil 170
(0.254)
13mil 200
(0.33)
15mil 205
(0.38)
20mil 260
(0.5)
40mil 410
(1.0)
Max. Barcode
Max.
marginal
scanning
digits space
width H
(one
direction
range side)
(mm)
(mm)
(mm)
87 66 1.5
120 90 2.0
139 104 2.5
167 125 3.3
172 128 3.8
224 166 5.1
365 268 10.2
Maximum no. of digits
Code39 Code128
Code93
N/W=1/2.5 (ASCII)
26 41
27 42
25 39
22 35
19 31
19 29
14 22
80
Code128
ITF
(Numeric
N/W=1/2.5
only)
34 68 50
35 70 51
32 64 47
29 58 43
25 51 38
24 49 37
18 37 29
NW7
N/W=1/2.5
31
31
29
26
23
22
17