Tough question about Advanced Time Base Correction

[Shannafey]

I have a Prime Image Time Base Corrector that they were going to dump at my work. I wanted to use it with my consumer SVHS deck at home, so I could adjust tapes and/or disable macrovision, while copying tapes to my set top DVD recorder. It is an older one and only has composite(BNC) ins, no S-Video. It has one video in, 2 video outs, 2 Gen Locks and one that reads V-position. I can't get it to work. I get an unsynched picture, where the vertical position is wrong. Obviously, a consumer deck doesn't have a gen lock out, so I ran a black burst into it, and then terminated the second gen lock. This didn't work. Next I ran the video into the gen lock and looped it out into the video in, and then out to the DVD recorder. This helped lock up the picture, except now, it is jittery. I don't know what that V-position is but I can't affect it by running the black burst through it, and I don't know what else to do. There are synch controls at the front of the unit, but they do nothing. I am not an engineer, so I definitely need help here, if any of you have the knowledge on what to do, or if I can use the TBC at all.

[davideck]

It sounds like this TBC does not have a full frame of correction, and as such requires that the source VCR be gen lockable as well. The V Position signal, if it is an output, may be an advanced sync out that is intended to sync up the VCR in advance of the the gen lock source, giving the TBC a few horizontal lines to do its processing.
If all of the above is true, then I don't think this TBC will work for you.

[Shannafey]

Thanks for the reply. I have another thought that I am going to try. I have an S-Video to RCA composite adapter. I am going to run one of the video outs to the genlock and then terminate the signal, and then send the other to the video in, and come out to the DVD recorder. I hope I can get this old workhorse to do the job for me!