Unitech ES910, Руководство пользователя

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1-2 Electrical interface/Pin assignment
The scanner provides a 10 pins, 1.25mm pin-to-pin distance connector.
Figure 1-1 Backward view
Table 1-2 lists the pin assignments of the scanner.
Table 1-2 Electrical interface/Pin assignment
Pin
No.
RS232 USB
Description
Pin/Signal Name Type Pin/Signal Name Type
1 Power(+5V) Input Power(+5V) Input Power
：
+5 VDC.
2 Ground Input Ground Input
Ground: 0V reference, connects to
cable shields.
3 Ground Input Ground Input Ground
：
0V reference.
4
+3.3V
（
for interface
auto selection
purpose
）
Input
Ground
（
for interface
auto selection
purpose
）
Input
RS232
：
Logic high level
，
+3.3VDC.
USB
：
Logic low level
，
0V reference.
5 TXD Output Reserved -
RS232
：
Serial data transmit output
port
（
Transmitted data
）
.
6 RXD Input Reserved -
RS232
：
Serial data receive input port
（
Received data
）
.
7 Reserved - Reserved - Reserved.
8 TRIGGER Input TRIGGER Input
Scanner trigger.
Low level(activity): 0V reference.
high level: 3.3VDC.
9 CTS Input D- -
RS232
：
Serial port handshaking line
（
Clear-to-send
）
.
USB
：
Negative differential line.
10 RTS Output D+ -
RS232
：
Serial port handshaking line
（
Request-to-send
）
.
USB
：
Positive
differential line
.
Note: Voltage level of all RS232 Pin-outs (RXD, TXD, CTS and RTS) is 0V for logic low level and
3.3V for logic high level.