Keyboard/Printer EIA Interface
| Pin Number |
Pin Name |
Description | Cable Termination (DB-25P) |
|---|---|---|---|
| 1 | SIG GND | Signal Ground | 7 |
| 9 | PRO GND | Protective Ground | 1 |
| 10 | +12V | +12 Volts to RTS (EIA on +3V when power is on) | 4 |
| 11 | DCD | Data Carrier Detect (Held to EIA ON by external equipment) | 8 |
| 12 | RXD | Receive Data | 3 |
| 13 | TXD |
Transmit Data |
2 |
| 15 | DTR | Data Terminal Ready (DTR is +3V when terminal is online) | 20 |
(Relative to the keyboard and printer)
Acoustic Coupler Interface:
|
Pin Number |
Pin Name | Description |
Cable Termination |
|---|---|---|---|
| 1 | SIG GND | Signal Ground | 7 |
| 2 | DCD | Carrier Detect | 8 |
| 3 | TXD | Transmit Data | 2 |
| 6 | CTS | Clear To Send | 5 |
| 7 | DSR | Data Set Ready | 6 |
| 8 | RXD | Receive Data | 3 |
| 9 | PRO GND | Protective Ground | 1 |
(Relative to the acoustic Coupler internal to the terminal and on another connector)
The Jumper connector (to use the internal Acoustic Coupler when configured for external use), is 3 connections:
| From pin | To Pin |
|---|---|
| 2 | 11 |
| 3 | 13 |
| 8 | 12 |
правильная
с ошибками