3-20
SE4400 Integration Guide
Decode Distances in Darkness
Table 3-9. SE4400-E004E Decode Distances in Darkness
Symbol Density/
Bar Code Type
Bar Code
Content/
Contrast
Note 2
Focus
Position
Typical Working
Ranges
Near
Far
4.0 mil
PDF417
80% MRD
Near
2.9 in
7.37 cm
3.5 in
8.89 cm
Far
N/A
N/A
5.0 mil
Code 39
ABCDEFGH
80% MRD
Near
2.2 in
5.59 cm
4.0 in
10.16 cm
Far
4.3 in
10.92 cm
6.0 in
15.24 cm
6.67 mil
PDF417
4 Col, 20 Rows
80% MRD
Near
2.5 in
6.35 cm
4.1 in
10.41 cm
Far
5.1 in
12.95 cm
7.5 in
19.05 cm
7.5 mil
Code 39
ABCDEF
80% MRD
Near
2.2 in
5.59 cm
4.8 in
12.19 cm
Far
3.3 in
8.38 cm
8.7 in
22.10 cm
10 mil
PDF417
3 Col, 17 Rows
80% MRD
Near
2.3 in
Note 1
5.84 cm
4.5 in
11.43 cm
Far
4.3 in
10.92 cm
9.0 in
22.86 cm
Notes:
1. Near distances are FOV limited.
2. Contrast is measured as Mean Reflective Difference (MRD) at 670 nm.
3. Working range specifications at temperature = 23°C, pitch=15°, roll=0°,
skew=0°, photographic quality, humidity 45-70%RH.
4. Range measurements are when VCC_ILLUM is powered off of 3.0 V (see
). Powering VCC_ILLUM off of 3.3 V yields slightly improved
working ranges in darkness.
Summary of Contents for Symbol SE4400
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Page 3: ...SE4400 Integration Guide 72E 63399 04 Revision A January 2007 ...
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