We have three floors, and each floor has a Compact Videohub, which is a 40x40 SDI router. I don't know the exact length of the runs from rooms to router and from routers (on 8th floor and 3rd floor) to 6th floor machine room, but you can guess long enough. I haven't had any issues with these - no crashes. Signal switching is accomplished with software which connects to the routers over LAN - software runs on Macs and iPads (although to limit confusion, I keep all the switching software on a Mac in one machine room).
No control panels needed, since everything is switchable via software. Redundancy patchbays are wired at the routers so in case I need outputs to outputs (tie lines between rooms) I can overpatch around it. I haven't needed that but I thought I might. Patchbays in the rooms which are basically all normalled, so they're mostly invisible to the editors.On Wed, Nov 13, 2013 at 2:52 PM, johnrobmoore <bigfish@pacbell.net> wrote:
Not to get personal but how big is your router? What control panels and how many are on the system? In the past I've had some issues with BlackMagic cards not handling longer cable runs and I believe it was due to the quality of the output chips they were using. At least that's what I heard from a chip vendor at NAB. Have you had any such issues with the HUB. Given how expensive new patchbays are I could see the economy over patchbays the HUB can provide. Sounds like you have both you lucky dog!!!!
--- In Avid-L2@yahoogroups.com, Mark Spano <cutandcover@...> wrote:
>
> We're patchbays over here, but only as a redundancy, since everything flows
> nicely through Videohubs. Very often this is a cheaper and better solution
> than patchbays, as it offers SDI DA capability as well (which are usually
> an expensive proposition).
>
> http://www.blackmagicdesign.com/products/videohub
>
>
>
>> On Wed, Nov 13, 2013 at 1:57 PM, johnrobmoore <bigfish@...> wrote:
>
> >
> >
> > Routers? Shirley you jest. I don't see a lot of routers like I use to. Big
> > facilities yes but the mid size plants and production company installs
> > rarely have a router. Then there is the inability on the part of many AE
> > types to understand a normaled patch panal. Lots of unnecessary patching.
> > Oh well what's a dinosaur to do, become extinct? ;-)
> >
> >
> > --- In Avid-L2@yahoogroups.com, "Mikeparsons.tv" <mikeparsons.tv@>> > wrote:
> > >
> > > I'm so glad I don't deal with VTRs anymore :) but who is connecting all
> > these things without reference in the first place... And more to the point
> > connecting them directly without going through a router...
> > >
> > > Mike
> > >> > > > On 13 Nov, 2013, at 9:52 pm, Dennis Degan <DennyD1@> wrote:
> > > >
> > > >
> > > > On Nov 12, 2013, at 8:44 PM, johnrobmoore wrote:
> > > >
> > > > > This where I disagree with referencing to input video for the SRW
> > 5500 and similar decks. When I'm outputting to these decks if the Avid
> > burps it sends an unstable signal to the record deck before the record off
> > strobe has gotten to the deck. You can hear the results if you are near the
> > machine. The drum servo will do it's best to resync to the unstable signal.
> > This puts a for all intents and purposes permanent glitch at that point in
> > the tape. It is very much like a hard record punch in, although that may
> > not what is actually happening it acts like the punch out of an asssemble
> > edit. There is no way to remove this glitch except for making an assemble
> > edit to the end of the tape. As I've already mentioned earlier in this
> > thread this is a very bad thing, especially when you are trying to punch in
> > a fix in the middle of a master.
> > > > > Through trial and error I have found that if I set the SR deck to
> > external reference when the avid burps the deck doesn't try to resync to
> > the unstable signal and therefore doesn't make the permanent glitch. This
> > method is not full proof but it certainly has reduced this problem for me.
> > So because of this behavior of SR decks and perhaps HDCam decks I always
> > use external reference whenever possible.
> > > >
> > > > I say:
> > > >
> > > > The servo might be more stable this way, but the recorded video must
> > still have some kind of disturbance at the point of the Avid 'burp'. If so,
> > though you have a mostly good recording, there is still a problem in the
> > video. If your Avid 'burps' like this, the problem needs to be fixed at the
> > Avid. Possibly, there's no reference feeding the Avid, or it's set to
> > ignore that reference. Still, I see your point about avoiding a permanent
> > 'glitch' and see why this may work.
> > > >
> > > > Dennis Degan, Video Editor-Consultant-Knowledge Bank
> > > > NBC Today Show, New York
> > > >
> > > >
> > > >
> > >
> >
> >
> >
>
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