CCTVINS

Hi guys thanks for your replies, I went back today and using a multimeter I checked the voltage at camera end and it was 12v no drops for the period I was there. I have done two things today, 1st thing was to change the camera on one of them, and then I used a 12v wall adapter to power the other. I was just curious to see if any of these changes would make a difference. If either one does I may have cracked it. Weired thing is when I unplug the bnc from the dvr end and then reconnect the picture is fine again. But then ater a few hours the picture goes mono again. I am starting to think it may be a Video balun issue???

Hi Guys, we have a 14 camera system installed at clients offices. 3 of the 14 internal cameras (dome infrared) are giving a black & white image half way through the day. If i power them off then on, the problem goes away but seems to come back after a few hours? 2 of the cameras are on 40 metres runs and the other is on a 20 metres run all over cat5e with passive video baluns on both ends? Using a 10amp 16 way 12v power supply unit. (Am I overusing the maximum 10amps???) anyone come accross any problems such as this? any advice on what i could look at?? I'm due to go back to site on thursday so would not mine some advice on what I could try. Thanks

Hi Guys, My company has been approached by a local company asking to put forward a quotation on a new development site which requires CCTV. Basically we just need to clarify a few things up and was after some advice and guidance please. Please also see the attached site plan, i have placed blue sqaures to show possible fixed camera locations and red squares to show PTZ cameras on existing lighting poles. The site is a privately owned village which requires CCTV to cover main areas of the houses back & front. My questions are mainly to do with the wiring back to the security office (as seen on the attached site plan). Questions as follows; 1) would amoured rg59 be suffient for this or would we be better running fibre? 2) The site has street lighting , could the exisiting ducts be used to feed back to the security office? any recomendations on how to wire back to the security office from each camera. Can't seem to get my head around it TBH!! 3) Powering the cameras - could i take a local feed from the street lighting? 4) what would you guys do on this type of job, we are slowly expanding our business so your help is much appricated. Thanks in advance