Operating instructions
Chapter
10
ICR 84x Image Code Reader
Appendix
8 010 961/0000/10-05-2005
©
SICK AG · Division Auto Ident · Germany · All rights reserved
10-13
10.4
Settings for reading DataMatrix ECC 200
The parameter values for reading are selected in the default setting of the ICR in such a way
that the largest possible bandwidth is covered by applications.
If reading with the parameter values of the default setting is not successful, appropriate
adjustments can be made to improve the image quality in the ICR (before decoding) in
accordance with
Chapter 10.4.1 “Improving the image quality“, Page 10-14.
To optimize the reading characteristics, especially for time-critical applications, the
evaluation parameters can be further restricted in accordance with
“Optimizing reading characteristics for special applications“, Page 10-20
. This accelerates
the output of the reading result in the “immediate“ output mode, as the decoder requires
less computation time.
For all changes to the parameter set using CLV Setup, proceed as follows:
1.
Change parameter value(s) as desired.
2.
Download to the ICR with the T
EMPORARY
save option.
3.
Repeat reading with modified parameter value(s).
4.
Change additional parameter values if necessary.
5.
If reading is successful, download to the ICR with the P
ERMANENT
save option.
Note
We recommend to check the content of the image memory (ICR) using ImageFTP.
See also
Chapter 6.5.3 Image Acquisition, Page 6-36
.
The adjustments cover the following settings (initial status: default settings):
Improving the image quality:
a) Minimum and maximum cell size
b) Shape of data field and print type (positive or negative print image)
c) Properties of the print image
d) Error correction
e) Minimum code contrast
f) Illumination mode
g) Flash pulse duration
Optimizing the reading characteristics for special applications:
a) Setting the symbol size
b) Image geometry
c) Time and effort involved in error correction
d) Limiting the reading area to be evaluated
e) Resolution