Motorola MC55 - Enterprise Digital Assistant Dokumentacja Strona 123

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Technical Specifications A - 7
Decode Zones
SE950 Decode Zones
The decode zones for the SE950 scan engines are shown in Figure A-1 and Figure A-3. The figures shown are
typical values. Table A-3 lists the typical distances for selected bar code densities. The minimum element width (or
“symbol density”) is the width in mils of the narrowest element (bar or space) in the symbol.
Figure A-1
SE950 35° Decode Zone
In .
cm
0
0
5 mil
1.80
8.00
7.5 mil
100% UPC
2.20
13.00
24.00
29.00
33.00
42.00
*
5
5
In .
cm
W
i
d
t
h
o
f
F
i
e
l
d
10
10
12.7
12.7
25.4
4 mil
1.50
5.50
10 mil
2.20
18.00
2.20
15 mil
28.00
2.20
2.50
30
76.2
35
88.9
40
101.6
45
114.3
15
38.1
20 50.8
15
38.1
20
50.8
20 mil
40 mil
55 mil
Note: Typical performance at 73.4 F (23 C)
on high quality symbols.
*Minimum distance determined by symbol length and scan angle
Depth of Field
5
12.7
10
25.4
15
38.1
20
50.8
25
63.5
31.6
0
0
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