Re: Convert CCTV to Digital

[Matt Ion <soundy@xxxxxxxxxxxxxxx>]

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.



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