Denso QK11-U, User Manual

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Chapter 2. How to read
Scanning Codes
Turn power on: The QK11-U will be ready for scanning. In this status, bring the LCD of a
mobile phone near the scanning window as shown in the figure below. The QK11-U will
read codes, output the data, sound buzzer and cause the OK LED to light.
•
Reading may be impossible depending on the mobile phone model, setting status of
contrast and backlight, or the condition of LCD surface (pasting of seal, scratches,
etc.).
By command control, QK11-U is ready for scanning, it can change into a standby state
or a reading code can be set up.
Please refer to 3. Communications about the method of command control.
Re-read prevention
The QK11-U supports the re-read prevention function, so that if a code fits on the
scanning window, it will not read the same code multiple times in succession. Therefore,
if you want the QK11-U to read the same code again, separate the code from the
scanning window for at least one second to release the re-read prevention function.
However, if you fit a low-quality code that cannot be read for more than one second on
the window, the QK11-U can re-read the code at an interval of one second or more.