Serial Adapters

 

9 pin to 25 pin converter

 

Signal

Name

9 Pin

25 Pin
DCD Data Carier Detect 1 8
RX Recieve Data 2 3
TX Transmit Data 3 2
DTR Data Terminal Ready 4 20
GND Signal Ground 5 7
DSR Data Set Ready 6 6
RTS Request To Send 7 4
CTS Clear To Send 8 5
RI Ring indicator 9 22

 

 

Parallel Loopback

Check it
(Connect these pins together)
11 - 17
10 - 16
12 - 14
13 - 1
2 - 15

 

 

Norton
(Connect these pins together)

 

2 - 15
3 - 13
4 - 12
5 - 10
6 - 11

 

 

Serial Loopback

Check it 25 pin
(Connect these pins together)
2 - 3
4 - 5
6 - 8
8 - 20
20 - 22

 

Check it 9 pin
(Connect these pins together)
1 - 6
1 - 9
2 - 3
4 - 6
7 - 8

 

 

Norton it 25 pin
(Connect these pins together)
2 - 3
4 - 5
6 - 8
8 - 20
20 - 22

 

Norton it 9 pin
(Connect these pins together)
2 - 3
7 - 8
1 - 4
4 - 6
6 - 9

 

InterLink, Laplink Parallel Cable
Connector 1 Connector2

2

15

3

13

4

12

5

10

6

11

10

5

11

6

12

4

13

3

15

2

17

17

25

25

 

Null Modem cable

9 pin connector 1

Signal

25 pin connector 1

25 pin connector 2

Signal

9 pin connector 2

2

RX

3

2

TX

3

3

TX

2

3

RX

2

4

DTR

20

6+8

DSR+DCD

6+1

5

GND

7

7

GND

5

6+1

DSR+DCD

6+8

20

DTR

4

7

RTS

4

5

CTS

8

8

CTS

5

4

RTS

7
(note: pins 8, 4, and 5 may not need to be connected for Interlink)

 

Windows Direct Cable Connection

Connector 1

Connector 2

2

15

3

13

4

12

5

10

6

11

11

6

12

4

13

3

15

2

25

25