REA
VERIFIER
© REA Elektronik GmbH, 64367 Mühltal, Germany --- REA MLV-2D Manual Version 3 – 21/12/2015
Page 48 of 98
7.13
Terminal-based measurements
The display and keyboard can be used to perform code identification and start the
evaluation directly from the device terminal. While the PC required for operation may
be located out of reach, a connection to the PC must have been established. The
measurement can be performed at the terminal and the verification report appears on
the display. This enables a "pseudo-portable" operation.
Numerical key <1> activates the live image on the device display.
An image appears on the display as a positioning guide.
In the simplest case, red cross hairs are shown on the display. The
cross hairs must target the code. If this is the case, then the <Scan> key can be used
directly to take a measurement.
The <OK ENTER> key can be used to select between the display of the red
cross hairs, blue squares of various sizes or a horizontal red line on the
display screen.
Figure: Cross hairs (automatic), manual barcode and 2D code measurement area
determination.
Automatic mode uses the cross hairs, and the system distinguishes between the code
position and the measurement of barcodes/2D codes automatically. The blue square
defines the measurement area for measuring 2D matrix codes. The blue square must
fully enclose the 2D code, including the light margins. The thick red line defines the
height range used for measuring normal 1D barcodes. The red line must always be
located within the barcode (within its upper and lower bounds). Setting the
measurement area correctly is a precondition for correct measurements. Manual
measurement area definition is used when the automated functionality fails.
The measurement itself is initiated by pressing the red <Scan> key.
Measurement evaluation takes from a few seconds to a minute to
complete. The result is then shown and the arrow keys can be used to scroll through
the pages displayed.
