USING GRYPHON™ D432/D432E 2bright 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 graylevels, or 2 gray levels. Higher color depths yield larger image files. This option isignored if the JPEG format is selected, (256 gray levels only).2.4 AUTOSCANNING2.4.1 Normal ModeGryphon™ D432/D432E provides an autoscan command (see page 70), whichwhen enabled, causes the reader to scan continuously and to monitor the centralzone of its reading area. In this way, Gryphon™ D432/D432E is ready to capture anyimage (containing a potential code) positioned on a uniform background.The aiming system can be enabled to indicate the reading area of the potential codeto be captured. The illumination system can also be enabled when the ambient lightconditions are not sufficient to autodetect the potential code to be captured;furthermore, the illumination system increases in intensity for an instant whencapturing and decoding an image. A safety time may be defined to preventGryphon™ D432/D432E from reading the same code repeatedly.If the decoding is completed successfully, the reader starts monitoring the readingarea again. In case of decoding failure, Gryphon™ D432/D432E keeps on decodinguntil a potential code is present in the central zone of the reading area.2.4.2 Pattern ModeThe Autoscan pattern mode is particularly advised when reading barcodes positionedon a non-uniform background. In these cases Gryphon™ D432/D432E may perceivesome elements of the background as barcodes and start the decoding. To avoid thisundesired effect, the Autoscan Pattern Code is placed in the Gryphon™ D432/D432Ereading area which prevents decoding. Using this code as the background, codereading takes place normally by presenting desired codes to be read over the PatternCode. Between each code read, the Pattern Code must be represented toGryphon™ D432/D432E.The Pattern Code can be printed from the file of the manual (Appendix D) availableon the CD-ROM.In case of low ambient light conditions, Gryphon™ D432/D432E automaticallyactivates the illumination system. If desired, the illumination system can be enabledso that it is always active.7