Kantronics MT1200, Руководство пользователя, Страница: 30 / 157

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as shown below, if you are using a DSUB-25 connector, either 5 or 9 wires
can be connected and any other wires are unused.
Note: You must terminate the shield on each end of the cable assembly properly. See
Note 2 in the Radio Frequency Interference Statement section.
Wiring instructions:
Some third-party software does not use hardware flow control and therefore does not
need the RTS and CTS wires shown below.
For details on preparing your cable wiring, use the chart below that is appropriate for
your configuration. In each case, there is a listing of which MT1200 (“Computer” port)
pin needs to be connected to which pin on the computer’s serial (COM) port. The wiring
depends upon whether your computer has a 25-pin connector or a 9-pin connector, and
on how many wires are in the cable (you only need 5 wires connected for MT1200
operations, but you may connect more wires to use the cable for other purposes).
CASE 1: Wiring if computer has a 9-pin connector:
MT1200 Computer
2 <——> 2 TXD
3 <——> 3 RXD
5 <——> 5 Signal ground
7 <——> 7 RTS
8 <——> 8 CTS
1 <——> 1 DCD (optional)
4 <——> 4 DTR (optional)
6 <——> 6 DSR (optional)
CASE 2: Wiring if computer has a 25-pin connector:
MT1200 Computer
2 <——> 3 TXD
3 <——> 2 RXD
5 <——> 7 Signal Ground
7 <——> 4 RTS
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