Barcode Reader Mode - Denso GT20Q-SB User Manual

7.3 Barcode Reader Mode

In barcode reader mode, the scannable range on the longitudinal scale is limited to the central 15% shown in the figure below,
with a skew angle diameter of 5°≧θ≧-5°.
Less time is therefore required for barcode scanning than standard reader mode.
2-D codes and multi-line barcodes cannot be scanned in this mode, even if scanning of these codes is enabled. Also, the point
scan mode (refer to Section
most recently enabled will be activated.
If the barcode reader mode is selected while using the HID (Human Interface Device Profile), neither the QR-coded parameter
menu nor the configuration software can be used. Hold down the magic key for approximately two seconds to temporarily
release the barcode reader mode. (Refer to
7.4 Point Scan Mode
The scanner scans a code by aiming at a code under the intersection of the cross at the center of the marker. The code will not
be scanned if there is no code under the intersection of the cross or if the scanner cannot detect the marker due to external
light etc. Also, this mode is available only when marker illumination is enabled.
7.5 Mirror Image Code Scanning
The scanner can scan both standard and mirror image 2D codes. Use the configuration software (ScannerSetting_2D) to
enable or disable the mirror image code scanning. 2D code scanning may take longer if the mirror image code scanning is
enabled.
7.6 Black-and-white Inverted Code Scanning
The scanner can scan black-and-white inverted 2D codes or barcodes. Use the QR-coded parameter menu or the configuration
software (ScannerSetting_2D) to switch between normal code scanning, black-and-white inverted code scanning, or
normal/inverted code auto detect scanning.
Auto detect scanning may take longer than normal code scanning or black-and-white inverted code scanning.
A black-and-white inverted code requires a black level margin equal to or exceeding the standard QR Code margin around the
code symbol.
7.4) cannot be enabled while the scanner is in this mode. If both modes are enabled, the mode
Chapter 6)
Scannable range when in standard reader mode
Scannable range when in barcode reader mode
(shaded area)
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