VT100 User Guide - Table 2-1 - EIA RS-232-C Connector Signals
Table 2-1 EIA RS-232-C Connector Signals
| Pin Number |
Description |
Pin Number |
Description |
| 1 |
Protective ground |
14 |
(not used) |
| 2 |
Transmitted data |
15 |
Transmit clock |
| 3 |
Received data |
16 |
(not used) |
| 4 |
Request to send |
17 |
Receive clock |
| 5 |
Clear to send |
18 |
(not used) |
| 6 |
Data set ready |
19 |
Speed select
(secondary request to send) |
| 7 |
Signal ground (common return) |
| 8 |
Carrier detect |
20 |
Data terminal ready |
| 9 |
(not used) |
21 |
(not used) |
| 10 |
(not used) |
22 |
Ring indicator |
| 11 |
Same as pin 19 |
23 |
Same as pin 19 |
| 12 |
Speed indicator
(secondary carrier detect) |
24 |
(not used) |
| 25 |
(not used) |
| 13 |
(not used) |
|
|
|
|
