Re: Coax as data cable

["Petem" <petem001@xxxxxxxxx>]

Hey Morgan use other product some times!!!

Panasonic can control there ptz from coax,and those are not the only one..


"G. Morgan" <alarmpro@xxxxxxxxxxx> a écrit dans le message de news:
1ni6p25ighuv1l9igo341hoduk064kvd0k@xxxxxxxxxx
> On Wed, 27 Dec 2006 20:40:50 -0500, "Robert L Bass" <sales @ comcast +
> net> wrote:
>
>
> 1.
>>Numerous professional installations still emoploy screw-on BNC connectors
>>for CCTV.  They work fine for composite video only but they're not good
>>enough for hi-def and some up-the-coax data applications.
>
> 2.
>>As mentioned above, up-the-coax PTZ control data is an option.
>
> 3.
>>If it's a lengthy cable run your customer might be happier if you first
>>consider sending the PTZ via that extra coax.  It works well when properly
>>set up and it can be a time saver for you.
>
> BWAHAHAHAHAHA!!!!!!!
>
> Wow...  You never have even *SEEN* a CCTV system apparently.  Screw-on
> BNC's huh?  LOL....
>
>
> The only viable data over coax I've seen is Pelco's 'Coaxatron' <sp>
> protocol which requires Pelco products on each end.   I suppose one
> could also use third party modems on each side to transmit rs485 data,
> but that would be cost prohibitive compared to just running a Cat5
> with the coax -- even then only one cable is needed for data and
> video, so I don't know what the heck that second coax is for.
>
>
> I hope the 2 hour phone course CCTV 101 is not offered in your
> distance learning catalog.
>
> --
>
> -Graham
>
> (delete the double e's to email)