Re: Convert CCTV to Digital

["Bob La Londe" <usenet@xxxxxxxxxxxxxxxx>]

"Matt Ion" <soundy@xxxxxxxxxxxxxxx> wrote in message
news:rSKqf.52930$2k.49334@xxxxxxxxxxx
> Bob La Londe wrote:
> > "Matt Ion" <soundy@xxxxxxxxxxxxxxx> wrote in message
> > news:Wdhqf.165576$Gd6.160875@xxxxxxxxxxx
> >
> >>anthony.clendenen@xxxxxxxxx wrote:
> >>
> >>>I am open to any solution.  My main points are to get the image storage
> >>>up to the office so that if the store gets broken into they don't take
> >>>the video with them and to get it to a digital signal.  Currently there
> >>>is only the one BNC cable that is going up to the office so I was
> >>>hoping to avoid having to run more cable and just use the one cable
> >>>coming up to the office.
> >>>
> >>>Would it be possible to have the cameras connect to some kind of
> >>>multiplexer that could send the video wirelessly up to the office and
> >>>then to a DVR card?
> >>
> >>The problem is, a multiplexer by definition takes the separate signals
> >>and provides a combined output, so even wirelessly, the MUX output would
> >>be the same as with your single cable.
> >
> >
> > Nope.  A quad does that, but a true multiplexor sends single full frame
> > images sequentially. Some can do it based on activity.  A single channel
DVR
> > that has settings for different standard multiplexors will record it
> > properly.  The DSR2000e by Kalatel will work with multiplexors upto 16
> > channels.  It has some other problems, but...  I don't like that
particular
> > recorder because of other issues.
>
> Ah yes, you are correct... but then there's also the issue of missing
> frames as they switch.  If the MUX outputs at 4FPS, 1FPS per camera is
> the most you're going to get on the DVR, which on modern units is pretty
> minimal.
>
> Either way, it's a rather inelegant solution.
>
>
>

Have you done it?  Actually a mux outputs typically at a much higher rate
than that.  Also, if the DVR is configured for the unit in question and its
a decent mux you will have the capability to coordinate recording based on
motion.

--
Bob La Londe
www.YumaBassMan.com