Motorola SYMBOL MINISCAN MSXX04 - Manual (Page 58)

4 - 8 Symbol MiniScan MSXX04 Series Integration Guide
Usable Scan Length
The decode zone is a function of various symbol characteristics including density, print contrast, wide-to-narrow
ratio, and edge accuracy. Consider the width of the scan line at any given distance when designing a system.
Calculating the Usable Scan Length Methodon page 2-8 describes how to calculate the usable scan length. The
scan angle is provided in Table 4-2 on page 4-5 .
Table 4-3 Symbol MS1204FZY Decode Distances (42
o
Scan Angle)
Symbol Density/
p/n / Bar Code Type /
W-N Ratio
Bar Code Content/
Contrast
1
Typical Working Ranges
3
Guaranteed Working
Ranges
3
Near Far Near Far
5.0 mil
64-17453-01
Code 39; 2.5:1
ABCDEFGH
80% MRD
3.25 in.
8.26 cm
7.00 in.
17.78 cm
4.75 in.
12.07 cm
5.25 in.
13.34 cm
7.5 mil
64-17452-01
Code 39; 2.5:1
ABCDEF
80% MRD
3.00 in.
7.62 cm
12.50 in.
31.75 cm
4.75 in.
12.07 cm
9.00 in.
22.86 cm
13 mil
64-05303-01
100% UPC
012345678905
80% MRD
2.20 in.
5.59 cm
25.75 in.
65.41 cm
Note 2 19.00 in.
48.26 cm
20 mil
60-01429-01
Code 39; 2.2:1
123
80% MRD
1.00 in.
2.54 cm
(Note 2)
34.00 in.
86.36 cm
Note 2 24.00 in.
60.96 cm
20 mil
60-02710-01
Code 39; 2.2:1
123
25% MRD
1.00 in.
2.54 cm
(Note 2)
27.25 in.
69.22 cm
Note 2 22.00 in.
55.88 cm
40 mil
64-17457-01
Code 39; 2.2:1
AB
80% MRD
2.20 in.
5.59 cm
(Note 2)
66.75 in.
169.55 cm
Note 2 49.00 in.
124.46 cm
55 mil
64-17458-01
Code 39; 2.2:1
CD
80% MRD
4.00 in.
10.16 cm
(Note 2)
75.00 in.
190.50 cm
Note 2 55.00 in.
139.70 cm
Notes:
1. Contrast measured as Mean Reflective Difference (MRD) at 650 nm.
2. Near ranges on lower densities largely depend on the width of the bar code and the scan angle.
3. Working range specifications: Photographic quality symbols, pitch = 10°, skew = 0°, roll = 0°,
ambient light < 150 ft. candles, and temperature = 23 °C.