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Quadrus Verifier User’s Manual
Capture Mode
Calculating Number of Captures in a Rapid Capture Application
1. First calculate the distance between multiple captures.
For multiple captures in
Rapid Capture
mode, you can calculate the distance
between successive symbols by multiplying
the line speed by the capture time.
TRAVEL DISTANCE = Line Speed X 15mS
Note:
For
Dual Camera
operations, add 33mS
to the overhead time for the first external capture.
Example
:
A symbol moving at 10 ips (inches per second)
past a CCD reader travels 0.010”/mS * 15mS
= 0.15 inches between captures.
2. Next calculate number of captures.
Once the travel time is known, you can
easily calculate the number of captures
you can expect to occur inside a FOV by
subtracting the symbol size from the FOV
and dividing the result by the travel time.
NUMBER OF CAPTURES
=
(FOV–Symbol Size)/Travel Distance
Following up on the example from Step 1:
0.78" – 0.4"/0.15" = 2.5 captures
If a required number of captures has been determined, you can also work the formula
backwards and determine the minimum FOV by:
FOV = (Number Of Captures * Travel Time) + Symbol Size
Distance traveled between
captures
0.4 inches
Symbol Size
0.78 inches FOV
Содержание Quadrus Verifier
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Страница 210: ...6 32 Quadrus Verifier User s Manual Setting Up the Verifier for EZ Trax ...
Страница 302: ...8 62 Quadrus Verifier User s Manual Configuring EZ Trax Output ...
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Страница 404: ...15 14 Quadrus Verifier User s Manual Ordered Output Filter ...
Страница 444: ...A 30 Quadrus Verifier User s Manual Glossary of Terms ...