Motorola MS4407 用户手册

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页码 310
4 - 16 Symbol MS4404/MS4407 Integration Guide
Table 4-7    
 HD/DPM 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
4.0 mil
PDF417 
80% MRD
2.4 in
6.10 cm
3.2 in
8.13 cm
Note 1
2.74 in
6.96 cm
5.0 mil
Code 39 
ABCDEFGH
80% MRD
1.7 in
4.32 cm
4.0 in
10.16 cm
2.29 in
5.82 cm
3.04 in
7.72 cm
6.67 mil 
PDF417
4 Col, 20 Rows
80% MRD
2.0 in
5.08 cm
3.6 in
9.14 cm
2.74 in
6.96 cm
2.94 in
7.47 cm
7.5 mil
Code 39
ABCDEF
80% MRD
1.6 in
4.06 cm
4.3 in
10.92 cm
2.54 in
6.45 cm
3.54 in
8.99 cm
10 mil
PDF417
3 Col, 17 Rows
80% MRD
1.7 in 
Note 1
4.32 cm
4.0 in
10.16 cm
Note 1
3.04 in
7.72 cm
13 mil
UPC-A
012345678905
80% MRD
2.2 in
5.59 cm
5.1 in
12.95 cm
Note 1
4.04 in
10.26 cm
15 mil
PDF417
80% MRD
Note 1
4.5 in
11.43 cm
Note 1
3.79 in
9.63 cm
20 mil
Code 39
123
80% MRD
Note 1
7.0 in
17.78 cm
Note 1
5.29 in
13.44 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.