There is one complete CV643D w/scandoubler for sale at a norwegian site:
http://www.gibud.no/Files/ObjectInfo.cfm?Id=203628The sellers emailadress is found in the ad. So if you wish to contact him I guess he might be able to tell you what you need to know.
There is also a picture of the cards with the connection cable, but its not very high res.
regards,
Anbjorn
