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USING GRYPHON™ D432/D432E
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bright objects inside the image will be better distinguishable. Default value is 0%,
which means that no contrast adjustment is performed.
You can set the Image Color Depth by selecting 256 gray levels (default), 16 gray
levels, or 2 gray levels. Higher color depths yield larger image files. This option is
ignored if the JPEG format is selected, (256 gray levels only).
3.4 AUTOSCANNING
3.4.1 Normal Mode
Gryphon™ D432/D432E provides an autoscan command (see page 70), which
when enabled, causes the reader to scan continuously and to monitor the central
zone of its reading area. In this way, Gryphon™ D432/D432E is ready to capture any
image (containing a potential code) positioned on a uniform background.
The aiming system can be enabled to indicate the reading area of the potential code
to be captured. The illumination system can also be enabled when the ambient light
conditions are not sufficient to autodetect the potential code to be captured;
furthermore, the illumination system increases in intensity for an instant when
capturing and decoding an image. A safety time may be defined to prevent
Gryphon™ D432/D432E from reading the same code repeatedly.
If the decoding is completed successfully, the reader starts monitoring the reading
area again. In case of decoding failure, Gryphon™ D432/D432E keeps on decoding
until a potential code is present in the central zone of the reading area.
3.4.2 Pattern Mode
The Autoscan pattern mode is particularly advised when reading barcodes positioned
on a non-uniform
background. In these cases Gryphon™ D432/D432E may perceive
some elements of the background as barcodes and start the decoding. To avoid this
undesired effect, the Autoscan Pattern Code is placed in the Gryphon™ D432/D432E
reading area which prevents decoding. Using this code as the background, code
reading takes place normally by presenting desired codes to be read over the Pattern
Code. Between each code read, the Pattern Code must be represented to
Gryphon™ D432/D432E.
The Pattern Code can be printed from the file of the manual (Appendix D) available
on the CD-ROM.
In case of l
ow ambient light conditions, Gryphon™ D432/D432E automatically
activates the illumination system. If desired, the illumination system can be enabled
so that it is always active.