Motorola MC3090G Integration Guide - Page 210

Imager Decode Ranges, A - 8, MC3000 Integrator Guide

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A - 8 MC3000 Integrator Guide Imager Decode Ranges The decode ranges provide the decode distances for barcodes of specified densities. Figure A-3 shows the imager decode ranges and Table A-5 on page A-9 lists the scan ranges for the 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. The maximum usable length of a symbol at any given range is shown below. in. cm 6 15.24 Note: Typical performance at 73˚ F (23˚ C) on high quality symbols. MC3000 5 mil 4.5 6.5 PDF417 6.67 mil 5.3 7.7 3.3 4.3 2.5 3.8 2.8 7.5 mil PDF417 10 mil UPC A 10.7 11.1 PDF417 15 mil 20 mil 14.2 14.4 5 12.7 4 10.16 3 7.62 2 5.08 W i d 1 2.54 t h o 0 0 f 1 2.54 F i e 2 5.08 l d 3 7.62 4 10.16 18.9 5 12.7 6 15.24 in. 0 cm 0 5 10 15 20 12.7 25.4 38.1 50.8 Depth of Field Figure A-3 MC3000 Imager Decode Ranges

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A - 8
MC3000 Integrator Guide
Imager Decode Ranges
The decode ranges provide the decode distances for barcodes of specified densities.
Figure A-3
shows the imager
decode ranges and
Table A-5 on page A-9
lists the scan ranges for the 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. The
maximum usable length of a symbol at any given range is shown below.
Figure A-3
MC3000 Imager Decode Ranges
in.
cm
MC3000
5 mil
6.5
PDF417 6.67 mil
7.5 mil
7.7
10.7
11.1
14.2
14.4
UPC A
PDF417 15 mil
18.9
20 mil
W
i
d
t
h
o
f
F
i
e
l
d
Depth of Field
Note:
Typical performance at 73˚ F (23˚ C)
on high quality symbols.
0
0
5
12.7
4.3
0
1
2
3
0
2.54
5.08
7.62
2.54
5.08
1
2
4
10.16
in.
cm
7.62
3
10.16
4
3.3
5.3
4.5
10
25.4
15
38.1
PDF417 10 mil
2.5
3.8
2.8
20
50.8
5
12.7
5
12.7
15.24
6
15.24
6