CompuServe Messages

Hi Raymond. I'm no expert on RS-422, so I'm about to offer some guesses. (I use a UVW-1800 as a record deck with a FAST Video Machine – this connects with a straight-through 9 pin to the UVW at one end and the VM at the other). I believe that Sony adopted the RS-422 electrical characteristics (though I'm not sure in their entirety). However, Sony developed its own protocols for communications to and from their tape decks. Many other manufacturer's have since adopted the Sony standards. I personally have not seen anything other than 9-pin in the video world (perhaps others have), so I am not sure how to advise you on the mapping. If you are trying to control the decks from a commercial editing package (as opposed to having written the software yourself)m I would recommend you contact the manufacturer of the software for advice. You also don't mention whether the PC port you are using is a general purpose RS-232 port, or is designed as a RS-422 port. My understanding is (and I'm not sure it is correct) that RS-422 requires a special port. Probably none of this helps, but I thought I'd try anyway. Good luck! Bob