P220 Stationary Barcode Scanner User Manual 21
Chapter 3 Recognition Mode
3.1 Manual Mode
In manual mode, when the trigger control interface of the scanner changes into trigger electrical
level, the scanner will start to shoot and recognize. In the limited time of “once recognizing time”, the
scanner will continuously shoot and recognize until it is successful. When trigger electrical level is
canceled, or recognition is over the once recognition time limit, shooting and recognizing will be
stopped. When recognition is successful, the scanner will output the editing content through
communication interface. When start a new trigger recognition, the host needs to cancel the trigger
electrical level at first, and then send the trigger electrical level after 20ms.
Manual Mode
3.2 Sensing Mode
In automatic sensing mode, the scanner will monitor the images being taken. When the scene
changes, it will recognize within the limited time of “once recognition time”. After recognizing the
output information successfully or the recognizing times out, it will re-enter the state of monitoring
scene changes.
When the scanner work in this mode, it can also according to the trigger electrical level to enter
the recognizing state. After the trigger electrical level is canceled or recognizing times out, it will re-
enter the state of monitoring scene changes. Before re-entering the monitoring state, the trigger
electrical level needs to be canceled, then it will be switched to the sensing mode.
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