Datalogic Matrix 300N, Руководство по продукции

Страница: 118 / 248

Reading Features
102 Matrix 300N
Reading Diagrams
• 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 adjustments to the HW/SW configuration with respect to the Refer-
ence 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
V.

FOV
H
x 0.8).
-about equal to 0.7 for 2MP models; specifically 1200/1600. (i.e. FOV
V.

FOV
H
x 0.7).
• The reading distance ranges are measured from the reading window sur-
face.
• The max theoretical Line Speed values for each diagram can be calculated
using the formula in " Maximum Line Speed and Exposure Time Calcula-
tions" on page 133 .
• 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: Pro-
cessing Mode=Standard; Code Contrast=Low; Decoding Complex-
ity=Very High.
• Common software parameter settings for 2MP models:
-for all 9 mm and 16 mm models reading 1D code symbologies: Process-
ing Timeout=1000 ms.
-for all 9 mm and 16 mm models reading 2D code symbologies: Process-
ing Mode=Standard; Decoding Complexity=High; Processing
Mode=Standard; Processing Timeout=1000 ms.
• When defining a HW/SW configuration for the Matrix 300N for conditions
different from those of the reference diagrams, it is suggested to keep in
mind the following rules:
-Changes in
Exposure Time
act directly proportional to the luminosity of
the image and inversely proportional to the maximum code reading
movement speed. Consequently, 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.
However, 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.