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Ds3478-hd/dpm near focus - 1d and pdf417, Ds3478-hd/dpm near focus - 1d and pdf417 -12, Depth of field – Motorola DS3478 User Manual

Page 42

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2 - 12 Symbol DS3478 Product Reference Guide

DS3478-HD/DPM Near Focus - 1D and PDF417

Figure 2-10

DS3478-HD/DPM Near Focus Decode Zone - 1D and PDF417

In.

cm

0

20 mil

Depth of Field

7.5

2

4

6

8

0

5.1

10.2

15.2

20.3

13 mil (100% UPC)

5.0

5 mil

2.7

5.6

1.64

4.5

15 mil PDF417

0

cm

W

i

d

t

h

o

f

F

i

e

l

d

0

1.0

2.5

2.0

5.1

5.1

*

*

* Minimum distance determined by symbol length and scan angle.

1.0

2.0

2.5

in.

Note: Typical performance at 73°F (23°C)
on high quality symbols in normal room light.
Vcc = 3.3V

7.5 mil

2.1

4.8

6.67 mil PDF417

2.5

4.1

10 mil PDF417

*

4.5

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4 mil PDF417

2.9

3.7

2.7

20 mil Dot Peen (DPM Version Only)

1.4