Denso QK20-R, Руководство пользователя

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7.2 Scanning a Mirror Image 2D Code
If you enable the mirror image scanning with the configuration software (ScannerSetting_2D), the scanner can scan a
mirror image 2D code as well as a normal image. Note that when the mirror image scanning is enabled, the time
required for scanning may increase.
7.3 Scanning a Black-and-white Inverted Code
The scanner usually scans a black-and-white normal code (black cells/bars on a white background). You can switch
the scanner to scan a black-and-white inverted code (white cells/bars on a black background) or to scan both types of
codes while automatically identifying them, using the QR-coded parameter menu or the configuration software
(ScannerSetting_2D).
Note that the automatic detection scanning may take more time than normal code or inverted code scanning.
A black-and-white inverted code requires a black quiet zone of more than the number of cells defined in the code
specifications.
7.4 Scanning PDF417 Symbols at High Speed
High-speed PDF417 scanning can be enabled or disabled with the configuration software (ScannerSetting_2D).
Enabling it shortens the scanning time of PDF417 symbols.
Note that the high-speed PDF417 scanning is possible only when PDF417 symbols lie horizontal to the scanning
window of the scanner.