SECTION 3
Scanner Specifications
3-6 SE 1223 Scanner User’s Guide
SE 1223 Wide Angle Scanner Decode
Zone
The wide angle SE 1223 scanner decodes the symbols as
described in Table 3-4. The numbers shown are typical val-
ues as well as guaranteed values. The minimum element
width (or symbol density) is the width in mils of the nar-
rowest element (bar or space) in the symbol.
Table 3-4
SE 1223 Wide Angle Scanner Decode Distances
Typical
Guaranteed
Symbol Density
Minimum
Maximum
Minimum
Maximum
In.
mm
In.
cm
In.
cm
In.
cm
In.
cm
0.005
0.127 2
5.08
4
10.16 2
5.08
4
10.16
0.0075
0.191 1.5
3.81
7
17.78 1.5
3.81
7
17.78
100% UPC
1.5
3.81
12
30.48 1.5
3.81
10
25.4
0.020
0.508
*
16
40.64
*
14
35.56
0.040
1.01
*
20
50.8
*
18
45.72
0.055
1.40
*
25
63.5
*
23
58.42
* Minimum distance determined by symbol length and scan
angle.
The decode zone is a function of various symbol characteris-
tics including density, print contrast, wide-to-narrow ratio,
and edge acuity. Width of decode zone at any given distance
must be considered when designing a system.
Usable scan length is calculated as follows:
L = 1.8 x (D + d) x Tan (A/2)
Where:
D = Distance (in inches) from the front edge of the
housing.
Содержание SE1223
Страница 1: ...SE 1223 Integrated VLD Scanner USER S GUIDE PN 961 032 042 Revision B September 1999...
Страница 8: ...CONTENTS vi SE 1223 Scanner User s Guide...
Страница 22: ...SECTION 1 General Information 1 14 SE 1223 Scanner User s Guide...
Страница 103: ...SECTION 2 Scanner Parameters SE 1223 Scanner User s Guide 2 81 SYMBOL CODE ID CHARACTER AIM CODE ID CHARACTER NONE...
Страница 124: ...SECTION 3 Scanner Specifications 3 14 SE 1223 Scanner User s Guide...
