Excellent quality on these manuals. Same as having the original printed manual and incredibly useful when doing a custom install like me. Keep it up on the good work.
Thank you very much you are helping me a lot with my preferred hobby!!! this manual of an old TV is going to be very helpful!!!!
You are very honest competent great job very clear and well done!!!!
Matteo
Text excerpt from page 4 (click to view)
ONKYO RS232 Control System
2.Communication Flow Description
The TX-DS787/DTR-7.1 uses Question, Command and Notification messages to have communicate with a given HOST. This protocol is designed for point to point communication between a HOST and the TX-DS787/DTR-7.1.
Question Message
Send a "Question Message" to the TX-DS787/DTR-7.1 from the HOST to get the current system status. The TX-DS787/DTR-7.1 will respond with a status message.
TX-DS787 DTR-7.1
Question Message "!1SLIQSTN[CR]" Status Message "!1SLI03[EOF]"
HOST/Controller
Command Message
Send a "Command Message" to the TX-DS787/DTR-7.1 from the HOST to change the system status. The TX-DS787/DTR-7.1 will respond with a status message within 50msec. If TX-DS787/DTR-7.1 does not respond within 50msec, the communication has failed.
TX-DS787 DTR-7.1
Command Message "!1SLI03[CR]" HOST/Controller Status Message "!1SLI03[EOF]"
Notification
If user change the system status, the TX-DS787/DTR-7.1 will notify the HOST by sending the new current status.