On Thu February 22 2007, Tim wrote: > Tim: > >> The two most obvious questions, and easiest to resolve remotely, is > >> do you know how to hook the two together, > > Claude Jones: > > That's a pretty general question - what I don't fully understand is > > sync, and where that's supposed to be fed from, and what some of the > > sync connector labels mean - don't have the machine handy right now, > > so I can't refer to it, so I'm doing this reply from memory > > They come from your house sync pulse generator, if you're integrating > the machine into a system. The TBC will run entirely on internal sync, > if you want to use just the VTR and TBC together. > > Compostite video reference is what's commonly known as a black burst > signal. Essentially a black video signal, the same as you'd get from > the video out of a camera with the lens cap on. Black video signal, > with colour burst. The TBC can use this signal, alone, as its reference > source. > > The composite sync connectors use 4 Volt peak-to-peak combined > horizontal and vertical sync signals. > > I can't recall what else was on the back, there were four connectors on > the one I played with the other day, and it'll depend on the model and > local video system. > > In general, for Australian PAL, we also have things like PAL pulse, > which is a square wave that inverts on every other horizontal line; and > colour framing, which is a pulse on every fourth field (it takes four > fields for the colour sub-carrier to return to the same phase). NTSC > would be different - it wouldn't have the PAL pulse, I don't recall how > their colour framing works. > > >> and do you have the multicore? > > > > I do. > > For a simple stand-alone playback machine, that may go to just a > monitor, or any other recorder: > > * Connect the multicore between TBC and VTR. > * Connect advanced sync (probably abbreviated to ADV SYNC) from > the TBC to a sync or reference input on the VTR. This is a 4 > Volt composite sync signal. > * Connect video out from the TBC to whatever other device you're > feeding to. > > The other inputs around the multi-core are for when you use a VTR that > doesn't have a multi-core, such as Umatic (though we found that TBC was > awful at handling the BVU deck we had at hand). Video in's rather > obvious, you've got two choices for drop-out compensation - monitoring > the RF from the video heads, or paying attention to a drop-out signal > from the VTR (a simple enough RF / not-enough RF signal). > > You might also want to connect the TBC video out back to the VTR's video > monitor TBC input, and the local video monitor to the video monitor > output. That lets you use the VTR's front panel controls to switch > between monitoring input, raw VTR output (demod), TBC output, and a > spare video source. > > If you were integrating that VTR into other video systems for playback, > you'd also connect your house sync references to the TBC reference > inputs. Depending on the particular equipment models involved, and your > requirements, that might be just a blackburst video signal (essentially > the same as a capped-off video camera output), or might also include > other separately-cabled sync signals. > > The other outputs on the timebase correct don't need to be used. You've > got several video outputs, two of them are composite, one of them lets > you switch off sync insertion, and a sub-carrier signal for feeding to > some things like *some* Umatic recorders which have a sub-carrier input. > If there's a reference out, it's probably another composite sync output, > rather than blackburst (I can't recall). The advanced sync is for the > player it's correcting (because of delays involved in time base > correcting, the player video needs to be a bit ahead of the output > video). Why don't you send me a message, if you don't mind, and I'll reply to this privately. This is getting way off subject/topic. -- Claude Jones Brunswick, MD, USA
