The cable interface for PC null modems is shown below.

9474

 

 

PC

 

FG

1

1

FG

 

TD

2

2

TD

 

RD

3

3

RD

 

RTS

4

4

RTS

 

CTS

5

5

CTS

 

DSR

6

6

DSR

 

CD

8

 

8

CD

DTR

20

20

DTR

 

SG

7

7

SG

 

2-6 Communication Requirements

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Image 14
Paxar 9474 manual