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 |