© REA Elektronik GmbH REA ScanCheck 3 - August 2010
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Automation
Electronic Devices and Systems
4. Operation of the REA ScanCheck 3n
The following chapters describe the operation and correct handling of the REA ScanCheck 3n. It must
always be noted that bar codes are measured and verified with the REA ScanCheck 3n. The
measurement results should therefore be comparable and repeatable. To this end, it is necessary that
all measurements also be carried out under uniform conditions and with a calibrated verification unit.
The reading and lighting angle and distances of the unit to the measured code must primarily always
remain the same.
In bar code reading systems or scanners, this requirement does not apply and can also rarely be
complied with. This is explained by the wholly different purpose of scanners: Scanners should be able
to register bar codes quickly and correctly under the most favorable conditions and provide the
decoded data to the logistic processes.
4.1 Handling of the REA ScanCheck 3
Attention:
Please never hold the unit as shown in the image at lower left. The index finger is touching the
output window of the laser beam.
A) The finger covers the emitting laser beam and
B) The filter pane is dirtied with fingerprints.
Both cause disruptions of the measured light beam which can falsify measurements or even
make them impossible.
Attention: Never put fingers on red light pane Suggestion for correct handling
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