Reading Diagrams - Datalogic Matrix 300N Series Product Reference Manual

READING DIAGRAMS

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The following reading diagrams are to be considered as references and are given
for typical performance at 25°C using high quality grade A symbols: Code 128 (1D
code) and Data Matrix ECC 200 (2D code) from the Test Charts provided with the
reader.
Testing should be performed with the actual Matrix 300N using application codes
in order to evaluate whether maximizing application performance requires adjust-
ments to the HW/SW configuration with respect to the Reference Conditions
given under each diagram.
The ratio of the Vertical FOV width with respect to the Horizontal FOV width in the
diagrams is:
about equal to 0.8 for 1.3MP models; specifically 1024/1280. (i.e. FOV
0.8).
about equal to 0.7 for 2MP models; specifically 1200/1600. (i.e. FOV
0.7).
The reading distance ranges are measured from the reading window surface.
The max theoretical Line Speed values for each diagram can be calculated using
the formula in "
Maximum Line Speed and Exposure Time Calculations" on page 132
Common software parameter settings for 1.3MP models:
- for all 6 mm models reading all code symbologies, and all 9 mm, 12 mm and 16
mm models reading 1D code symbologies are: Processing Mode=Advanced Code
Setting;
- for 9 mm, 12 mm and 16 mm models reading 2D code symbologies: Processing
Mode=Standard; Code Contrast=Low; Decoding Complexity=Very High.
Common software parameter settings for 2MP models:
- for all 9 mm and 16 mm models reading 1D code symbologies: Processing Time-
out=1000 ms.
- for all 9 mm and 16 mm models reading 2D code symbologies: Processing
Mode=Standard; Decoding Complexity=High; Processing Mode=Standard; Pro-
cessing Timeout=1000 ms.
When defining a HW/SW configuration for the Matrix 300N for conditions differ-
ent from those of the reference diagrams, it is suggested to keep in mind the fol-
lowing rules:
- Changes in Exposure Time act directly proportional to the luminosity of the image
and inversely proportional to the maximum code reading movement speed. Con-
sequently, reducing the Exposure Time by half, reduces the luminosity of the
image by half but doubles the theoretical code reading movement speed.
- Changes in Gain act directly proportional to the luminosity of the image. How-
ever, increasing the Gain value can reduce the quality of the acquired image.
- For DPM illuminators, the overall lighting power being considered is all Sectors
ON from the Central LED Group, unless otherwise specified.
READING DIAGRAMS
 FOV
V.
 FOV
V. H
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