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converting rs-422 to rs-232
I’m a bit in the woods on this one. We’ve got an AJA Kona LE. We don’t have a regular deck in the studio, as I’m mostly using the AJA to monitor DVCPROHD originating off of p2 cards.
We decided to pick up one of these JVC combo units that has a Hard drive, DV deck and DVD recorder in it. I figure it will be good for quick dubs, window dubs, and recording downconverted DVCPRO HD.
OK…my question is this. The JVC deck has RS-232 control. I would love to be able to use it for ingesting dv as uncompressed and controlling it using the rs-422 from the kona. Is it possible to make this happen with a converter or is it a pipe dream?
the deck (https://pro.jvc.com/prof/featured_models.jsp last item on page) also has firewire control, but somebody from AJA I talked to said that was less reliable than rs-422.
Thanks in advance for any help.
david
david garcia
Halflife* Digital
albuquerque, nm -
7 Replies
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You should get yourself a keyspan adapter. It’ll take the rs-232 and convert it to usb. You’ll have to setup a special device control preset and easy setup, but that won’t be hard. You should be able to install the drivers, setup a preset and go.
https://www.keyspan.com/products/usb/USA19HS/
Jeremy
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You might also talk to the folks that make Rosetta Stone converters. We have used these cables to go from RS-422 to RS-232 ports on a PC. They would know if any of their cables might do the job for you. I would think you could take the normal cable from that is made to connect a RS-422 deck to a RS-232 computer and run it in reverse. However, there may be voltage differences that I’m not aware of doing this. Worth asking them, they’re very helpful and the integrated cables are clean with just a slightly larger attachment at one end that does the conversion.
https://www.addenda-elect.com/product.htm
Aloha,
Ken
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we control a Beta SP deck (UVW 1400P) with RS232 from FCP through a keyspan adapter.
It used to be frame-reliable, but something in the new FCP5/Kona2 setup makes it not precise so I cannot recommend this solution for Mastering.– No Parking Production –
Finalcut Studio, Dual G5, Kona 2, X-Raid
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I too use product from Addenda, which work very well. If you were to purchase an AVID Adrenaline right now, running on a brand new HP xw8200 PC, AVID would provide you with an Addenda converter (although you need the opposite conversion, to take RS422 and convert it to RS232).
Bob Zelin
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Thanks all. I appreciate the help.
david garcia
Halflife* Digital
albuquerque, nm -
The protocol won’t be the same. RS422 devices use the Sony P2 protocol. The JVC unit undoubtably uses a different protocol which is designed to be used with multimedia controllers from Crestron and AMX, etc. You should be able to confirm this in the JVC documentation.
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I haven’t confirmed this, but it looks like the Kona Card will output will output an rs-232 signal from the serial port. In final cut device control there is an option for jvc-rs232. I don’t have the proper cables to test yet.
However all this being said, this deck won’t work for this application as the component outputs are only post MPEG compression. There is no direct RGB out from the DV end of the deck.
Thanks again,
David
david garcia
Halflife* Digital
albuquerque, nm
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