RS-232C Interface
1. Hardware specifications
1) Interface specifications
Connector:
Pin No. | Signal | Description |
1 | FG | Protective ground |
2 | SD (TXD) | Transmitted data |
3 | RD (RXD) | Received data |
4 | RS (RTS) | Request to send |
5 | CD (CTS) | Clear to send |
6 | DR (DSR) | Data set ready |
7 | SG | Signal ground |
20 | ER (DTR) | Data terminal ready |
Example of wiring connections
Personal computer |
| VTR | |
Frame FG | 1 | FG | |
3 | SD (TXD) | 2 | SD (TXD) |
2 | RD (RXD) | 3 | RD (RXD) |
7 | RS (RTS) | 4 | RS (RTS) |
8 | CD (CTS) | 5 | CD (CTS) |
6 | DR (DSR) | 6 | DR (DSR) |
5 | SG | 7 | SG |
4 | ER (DTR) | 20 | ER (DTR) |
2)Communication parameters
The VTR’s communication parameters are shown below. To change any of these parameters, make the changes using the menu.
Baud rate : 9600 bps
Bit length : 8 bits
Stop bit : 1 bit
Parity : None
31
