SONY 9-pin
The Sony 9-pin protocol is based on the EIA RS-422-A signal standard. The data rate is usually 38.4 kbps.
Cable Pinout:
| Pin | Master | Slave |
| 1 | Ground | Ground |
| 2 | Receive A | Transmit A |
| 3 | Transmit B | Receive B |
| 4 | Transmit Common | Receive Common |
| 5 | Spare | Spare |
| 6 | Receive Common | Transmit Common |
| 7 | Receive B | Transmit B |
| 8 | Transmit A | Receive A |
| 9 | Ground | Ground |
Please see the very good 'Sony 9-Pin' Page of Rick and Myriam's Big World of Computers: Sony 9-Pin Remote Protocol
or see the 'Technik-Tipps: Sony 9-Pin Remote Protocol
