Re: Long Runs - CCTV

[ABLE1 <someone@xxxxxxxxxxx>]

On 12/2/2015 5:29 PM, ABLE1 wrote:
> On 12/2/2015 1:08 PM, Bob La Londe wrote:
>> Back in the day we all had to deal with the 750' limit.  We all knew we
>> could push it further, but if we wanted to "know" it was good we made
>> sure
>> it was close to max for runs.  I special ordered 95% Cu RG-6 and was
>> able to
>> run 1000' and for black and white cameras there are some I nstalled at
>> nearly 1500' on that coax.
>>
>> Then along came twisted pair and amplified twisted pair baluns that
>> cdould
>> push composite video a couple miles.  With RF links (some) you could push
>> composite video several miles.
>>
>> Now we have to take a step back.  318' limit (100 meters) with IP
>> cameras.
>> We can stretch that a little, but that's the magic number for
>> ethernet.  Its
>> not the signals won't travel further.  Its that the timing is all off
>> if you
>> stretch it to far.  Multi Megapixel IP cameras are the bees knees.
>> The cats
>> meow.  Bob's pre marriage dating history.  Whatever.  LOL.  How are you
>> dealing with those long runs?  Its not always practical throw POE
>> switches
>> up all over the place as repeaters either.  I work on facilities
>> routinely
>> with runs of 500-700 feet, and one old install I did ages ago with
>> oversize
>> coax had a couple runs approaching 1500'.
>>
>> What is the answer.  I push POE IP cameras often now because of the
>> price to
>> features ratio and the ease of installation (nearly PnP), but how are you
>> dealing with distance issues?
>>
>
> Bob,
>
> I personally to date have not had to deal with it.  However, if I did or
> was going to, I would treat it as computer network. (which it is)
> Install Data Switches as hubs. The place your PoE switch or utilize a
> local Power Supply near the camera.
>
> Something else I would consider depending on a number of factors would
> be to use Fiber.  Placing a Ethernet to Fiber module at each end can
> transmit the video data long distances.  It would depend on number of
> cameras and the budget.
>
> Again, never had to.................... yet.
>
> Hope that helps.
>
> BTW if you are not already a member, this forum can be a help sometimes.
> http://www.cctvforum.com/
>
> Like any forum, you need to read between the lines at times.  But you
> can glean out some good input and see other opinions that can point you
> a direction that can help.
>
> Hope that helps.
>
> Les


FYI  Just saw this equipment in the latest Tri-Ed monthly flyer.
http://www.vigitron.com/Vigitron_Video_Transmission_Products.aspx
Specifically the Vi3002 Repeater.  The specs state daisy chain up to 8
units for a total of 3000'.  Hummmmmmm  Interesting.