Motorola MSXX04 ユーザーズマニュアル
Symbol MS3204 Specifications 7 - 11
Usable Scan Length
The decode zone is a function of various symbol characteristics including density, print contrast, wide-to-narrow
ratio, and edge acuity. Consider width of decode zone at any given distance when designing a system.
ratio, and edge acuity. Consider width of decode zone at any given distance when designing a system.
describes how to calculate the usable scan length. The
scan angle is provided in
Table 7-4
Symbol MS3204-I000 2D Slab/Raster Decode Distances
Symbol Density/
p/n / Bar Code Type
Bar Code Content/
Contrast
1
Typical Working Ranges
3
Guaranteed Working
Ranges
3
Near
Far
Near
Far
6.6 mil
64-14035-01
2D
123
80% MRD
1.0 in.
2.54 cm
5.25 in.
13.34 cm
1.5 in.
3.8 cm
3.75 in.
9.5 cm
10 mil
64-14037-01
2D
ABCDEF
80% MRD
3.5 in.
8.89 cm
9.5 in.
24.13 cm
5.0 in.
12.7 cm
7.5 in.
9.5 cm
15 mil
64-14038-01
2D
012345678905
80% MRD
6.5 in.
16.51 cm
14.0 in.
35.6 cm
Note 2
11.0 in.
24.1 cm
55 mil
64-17458-01
1D
CD
80% MRD
1.0 in.
2.54 cm
32 in.
81.3 cm
Note 2
22.0 in.
55.9 cm
Notes:
1. Contrast measured as Mean Reflective Difference (MRD) at 650 nm.
2. Near ranges on largely depend on the width of the bar code and the scan angle.
3. Working range specifications: Photographic quality symbols, pitch = 15°, skew = 0°, roll = 0°,
ambient light < 150 ft. candles, and temperature = 23 °C, Vcc = 5V.
4. Measured from the front of the scanner.
1. Contrast measured as Mean Reflective Difference (MRD) at 650 nm.
2. Near ranges on largely depend on the width of the bar code and the scan angle.
3. Working range specifications: Photographic quality symbols, pitch = 15°, skew = 0°, roll = 0°,
ambient light < 150 ft. candles, and temperature = 23 °C, Vcc = 5V.
4. Measured from the front of the scanner.