ONLINE HELP SOPAS Chapter 5
LECTOR®620
Parameters
8013778/Y269/2013-11-27 © SICK AG · Germany · All rights reserved · Subject to change without notice 31
5.4.1.3.3 Contrast
The Contrast parameter is used to set the gamma correction in % and adapt it to the code
contrast. The gamma correction can be set via the slide control.
If the optical difference between black and white code elements is minimal, the parameter
should be set to a high value until the code elements can be clearly distinguished.
To monitor the contrast, the data in the Code infobox (C
ONTRAST) can be evaluated:
• 100%: Max. contrast
• 10%: Code can already be identified
5.4.1.3.4 Contrast
The Contrast parameter is used to set the gamma correction in % and adapt it to the code
contrast. The percentage value for the gamma correction can be entered into the input field.
If the optical difference between black and white code elements is minimal, the parameter
should be set to a high value until the code elements can be clearly distinguished.
To monitor the contrast, the data in the Code infobox (C
ONTRAST) can be evaluated:
• 100%: Max. contrast
• 10%: Code can already be identified
5.4.1.3.5 Auto
Pressing the Auto button calls up the Auto Setup wizard for automatic configuration of the
brightness and contrast.
For the settings to be adjusted automatically, a suitable object with contrast changes or
edges (e.g. code, text, or other structures) must be placed in the reading area.
5.4.1.4 Illumination
The parameters of the Illumination group are used to deactivate and configure the illumina-
tion elements.
Optimizing the settings leads to an optimum, high-contrast, and consistently illuminated
reading area. External influences caused by sun, darkness, room lighting, etc. can therefore
be minimized.
5.4.1.4.1 Internal
The Internal parameter is used to modify the internal illumination of the LECTOR
®
620 in line
with the application's in situ lighting situation.
• O
FF: If external illumination is used, the internal illumination can be deactivated.
• L
EFT/RED (type-dependent): This illumination type permits the maximum contrast for co-
des in the wavelength spectrum between blue and green.
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