46 | 8 4
Signal
Symbol
Connector Pin#
Transmit Data
TXD
3
Receive Data
RXD
2
Grounding
GND
5
This is the most easy and cost effective way to use serial ports communication.
Note: The serial port pin definition of this tester is basically the same as the pin definition of the
standard 9-core RS232C connector.
The RS232C connector of this tester uses a 9-core pin type DB socket, and the pin sequence is as
shown below:
Direct connection to the standard DB 9-core hole type plug.
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Warning:
To avoid electrical shock, turn off the power before plugging or unplugging the
connector;
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Warning:
Do not short-circuit the output terminals or short-circuit the chassis to avoid damage
to the device.
5.1.1.2 Communicating with a Computer
The tester is connected to the computer as shown:
As can be seen from the above figure, the pin definition of this tester is the same as that of the
9-core connector serial interface pin used by the IMB AT compatible machine.
Users can use the
double-core shielded cable to make three-wire connection cable according to the diagram (the
length should be less than 1.5m)
or purchase the serial interface cable between the computer and the
instrument from our company or directly purchase the standard DB9 core cable (cross line).
When making the connection cable, be careful to short pin 4 and 6, pin 7 and 8 on the computer
connector.
(View from outside)
1
2
3
4
5
6
7
8
9
DTR (4)
DSR (6)
RXD (2)
Computer
(Controller) TXD (3)
GND (5)
RTS (7)
CTS (8)
(2) RXD
(3) TXD SME1190
(5) GND
