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Chapter Ⅱ Wiring instructions
USB version
USB version output interface is USB-Type A public seat. The pin definition conforms
to the USB 2.0 standard. Connect directly to your computer and use it.
RS232 version
The output cable of the RS232 version has two interfaces, a DB9 socket, a USB-Type
A socket, and a USB-Type A socket is to connect the power adapter or power the
device. DB9 socket wire sequence is shown in Table 2-1.
Table 2-1 RS232 wire sequence
Interface
Functions
description
USB-A
DB9 interface
GND
4
5
VCC
1
RS232_RX
3
RS232_TX
2
Keyboard version
There are two interfaces for the keyboard version, one USB-Type A male and one
USB-Type A female. The USB-Type A male connector connects the power adapter to
the device and the USB-Type A female connector connects the keypad.
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