PJF Posted July 3, 2008 Posted July 3, 2008 Hi Guys, Can anyone give me a max ball park figure on what is the longest run I can control a PTZ dome on CT100. Its a DM sprite 2 and probably a mid range dome. I have a fixed camera approx 400m from the sprite and customer wants to change to PTZ. The cable run is real pain, lofts,ducts,corridors etc. I really don't want to pull in a twisted pair unless I have no choice. Thanks. Paul. Top tip: if you ever catch fire, try to avoid seeing yourself in the mirror, because i bet thats what REALLY throws you into a panic and dont forget the one thing you cant recycle is wasted time.
GavHogg Posted July 3, 2008 Posted July 3, 2008 Hi Guys,Can anyone give me a max ball park figure on what is the longest run I can control a PTZ dome on CT100. Its a DM sprite 2 and probably a mid range dome. I have a fixed camera approx 400m from the sprite and customer wants to change to PTZ. The cable run is real pain, lofts,ducts,corridors etc. I really don't want to pull in a twisted pair unless I have no choice. Thanks. Paul. Recommendations as follows: URM70 - 200m RG59 - 250m CT100/RG6 - 350m CT125 - 450m CT167/RG11 - 750m Personally I would say it would work fine. Check with the manufacturer if you have doubts.
DannyTheTech Posted July 3, 2008 Posted July 3, 2008 Hi Guys,Can anyone give me a max ball park figure on what is the longest run I can control a PTZ dome on CT100. Its a DM sprite 2 and probably a mid range dome. I have a fixed camera approx 400m from the sprite and customer wants to change to PTZ. The cable run is real pain, lofts,ducts,corridors etc. I really don't want to pull in a twisted pair unless I have no choice. Thanks. Paul. Hi, Without seeing the site i would agree with PJF however you would be at the upper limit of CT100,but if the cable has not be run yet opt for CT125. However saying that if you have any "harsh" enviroments i.e heavy plant or mains usage near the cable runs this can cause all sorts of problem (however you would prob notice it first on the video signal). THe other thing to take into account is the quality of the cable as you can get very cheap RG59, CT125 etc and due to the lack of copper content the general rules go out the window (worth bearing in mind) AT1
BUSTER Posted July 4, 2008 Posted July 4, 2008 I,ve found that if you go much over 250m the picture is ok but have had problems with the telemetry and down the coax programming Any comments / opinions posted are my opinion only and do not represent those of my employer or Company
Gopher Posted July 4, 2008 Posted July 4, 2008 Hmm got systems out there with PTZ up-the-coax control with runs of about that, system works fine. I think it all depends on the kit used i.e transmission power of the DVR / controller and the required p2p etc of the co-ax reciever. Used RG-59 on a camera sure it's about 400m+ from an ADPRO unit connected using a MUX board to provide the up-the-coax and using a ZR-4 to get the signal back works well enough even after a few cable joint have been put in, using a standard baxall protocol. It all depends on what protocols your have up-the-coax from the DM2, the signal transmission power of the DM2 and what your using to receive / decode at the other end. Intruder / CCTV / Access Control Technical Support Personal Subscriber to the "K.I.S.S" principle, that's Keep It Simple Stupid, are you?
PJF Posted July 4, 2008 Author Posted July 4, 2008 So its possibly worth a shot. What I will do is test the dome in position first on coax. If it works , if it does not then I will start the twisted pair pull in Thanks lads. Paul. Top tip: if you ever catch fire, try to avoid seeing yourself in the mirror, because i bet thats what REALLY throws you into a panic and dont forget the one thing you cant recycle is wasted time.
SUBS Posted July 4, 2008 Posted July 4, 2008 Hi Guys,Can anyone give me a max ball park figure on what is the longest run I can control a PTZ dome on CT100. Its a DM sprite 2 and probably a mid range dome. I have a fixed camera approx 400m from the sprite and customer wants to change to PTZ. The cable run is real pain, lofts,ducts,corridors etc. I really don't want to pull in a twisted pair unless I have no choice. Thanks. Paul. Might depend on the protocal, as someone else has already pointed out, but I've got systems running at that sort of distance without any problems. you might find the resolution drops off a bit due to the capacitance within the cable, but not enough to be really noticeable. or it might tend to 'run on' a bit. with some domes you can get into the menu and turn up the HF lift, or cable compensation which should help.
markthespark Posted July 25, 2008 Posted July 25, 2008 I see System Q are now doing a pair of modules that you put on each end of a coax. You can then transfer RS485 and video along the coax and separate them at either end. I haven't used them yet but look very useful. May allow you to use less expensive domes that only have RS485 Telemetry. Anyone out there used them yet?
james.wilson Posted July 25, 2008 Posted July 25, 2008 agreed sounds good if they work long term. I have aproblem at the moment as was going to use a bbv converter. This would allow us to use our preferred spectra 4, rather than a 2060. securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount.
justin Posted July 26, 2008 Posted July 26, 2008 I will always now pull in a duct grade cat5. Had fantastic results sending video, RS485 and an alarm pair back on the one cable.
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