Installation Manual

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Communication Interface :
The E3000H communicates with the host computer in the following ways:
TTL TTL level signal (TTL-232): This interface accommodates most system architectures. For some
systems that require an RS-232 form factor, a TTL-232 to RS-232 conversion circuit is required.
USB HID-KBW: A USB-based keyboard emulation device that can be directly connected to a PC without
the need to install a driver.
The TTL-232 serial communication interface available on the E3000H supports speeds from 2400bps to
115200bps. The default configuration of the serial communication interface of the E3000H is 9600bps, 8
data bits, no parity, and 1 stop bit. The hardware flow control and software flow control functions of the
serial communication interface are not provided on the E3000H.
Trigger control
The nTrig pin (PIN12) indicates a trigger on a low level input and a high level indicates that the trigger is
stopped (or released). The E3000H starts reading after receiving the trigger. After the reading is successful,
it will output the decoding information, and then wait for the trigger signal to stop (or release). During the
reading process, the trigger signal is stopped (or released) and the reading process is terminated. A new
reading process requires a re-generation of the trigger signal.
The reading process requires steps such as image acquisition, barcode recognition and interpretation. It is
recommended that the interval between two trigger signals be no less than 50ms. Refer to the following
trigger circuit design:
Buzzer signal
The Buzzer (Beeper) signal output is provided in the E3000H using the PWM mode in the Buzz pin (PIN9).