Motorola MS4407 用户手册
4 - 12 Symbol MS4404/MS4407 Integration Guide
Table 4-5
Standard Near Focus Decode Distances
Symbol Density/
Bar Code Type
Bar Code
Content/
Contrast
Note 2
Typical Working
Ranges
Guaranteed Working
Ranges
Near
Far
Near
Far
5.0 mil
Code 39
Code 39
ABCDEFGH
80% MRD
80% MRD
2.7 in
6.9 cm
6.9 cm
5.5 in
14.0 cm
14.0 cm
4.0 in
10.2 cm
10.2 cm
5.0 in
12.7 cm
12.7 cm
6.67 mil
PDF417
PDF417
4 Col, 20 Rows
80% MRD
80% MRD
3.0 in
7.62 cm
7.62 cm
5.25 in
13.3 cm
13.3 cm
4.5 in
11.4 cm
11.4 cm
5.0 in
12.7 cm
12.7 cm
7.5 mil
Code 39
Code 39
ABCDEF
80% MRD
80% MRD
2.2 in
5.6 cm
5.6 cm
6.0 in
15.2 cm
15.2 cm
3.5 in
8.9 cm
8.9 cm
5.5 in
13.9 cm
13.9 cm
10 mil
PDF417
PDF417
3 Col, 17 Rows
80% MRD
80% MRD
3.0 in
7.6 cm
7.6 cm
6.0 in
15.2 cm
15.2 cm
4.0 in
10.2 cm
10.2 cm
5.5 in
13.9 cm
13.9 cm
13 mil
UPC-A
UPC-A
012345678905
80% MRD
80% MRD
2.0 in
5.1 cm
5.1 cm
7.0 in
17.8 cm
17.8 cm
3.0 in
7.6 cm
7.6 cm
6.0 in
15.2 cm
15.2 cm
15 mil
PDF417
PDF417
80% MRD
Note 1
7.0 in
17.8 cm
17.8 cm
Note 1
6.0 in
15.2 cm
15.2 cm
20 mil
Code 39
Code 39
123
80% MRD
80% MRD
Note 1
9.5 in
24.1 cm
24.1 cm
Note 1
8.0 in
20.3 cm
20.3 cm
Notes:
1. Near distances are field-of-view (FOV) limited.
2. Contrast is measured as Mean Reflective Difference (MRD) at 670 nm.
3. Working range specifications at temperature = 23°C, pitch=15°, roll=0°,
skew=0°, photographic quality, ambient light ~30 ft-c, humidity 45-70% RH.
1. Near distances are field-of-view (FOV) limited.
2. Contrast is measured as Mean Reflective Difference (MRD) at 670 nm.
3. Working range specifications at temperature = 23°C, pitch=15°, roll=0°,
skew=0°, photographic quality, ambient light ~30 ft-c, humidity 45-70% RH.