Symbol Technologies MC3000 - Manual (Page 190)

MC3000 Integrator Guide A-8
Imager Decode Ranges
The decode ranges provide the decode distances for barcodes of specified densities. Figure A-6 shows the imager decode ranges and
Table A-7 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-6. 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