Cat5e baluns, 4 camera, horizontal lines

[jimmyNJ 0]

I am using Cat5e with baluns. Each cable run is fairly short, 25 - 100ft, 4 cameras, all dome, 12vdc.

 

I am using a single 4 output power supply, 12vdc, 5amp.

 

During the day 1 cameras shows horizontal lines, sporadically. This was the last camera added to the system. The first 3 worked fine.

 

At night with the lights out, 2 other cameras show horizontal lines. I figure it is the IR working hard to maintain the picture.

 

Would it be smart to swap out the power supply with 4 individual power supplies? Or is it my cheap baluns? The whole system is on a small UPS.

[checkley101 0]

To see if it is a power issue or if it's the cat5 cable giving off interference unplug the 4 way splitter and power 1 camera off the main 5a power supply and see if it's still doing the same , if it is then you know it's down to the cabling and not the power supply

[jeromephone 6]

are you running a seperate cat 5 for each camera and are you running power through a pair on that cable.

[jimmyNJ 0]

I am running power and video on a single Cat5e cable. Male Rj45 plugs into a balun on each end.

 

during the day, 3 out of 4 cameras are clear, at night with lights out 3 out of 4 cameras have lines.

[checkley101 0]

So are you using something like this

[jimmyNJ 0]

yes, similar to that.

[checkley101 0]

I would recommend you switch to these type as I've always had issues with them

[checkley101 0]

And these for power. The way I wire them is use 1 pair for video then you'll be left with 3 remaining pairs , I use the solid colours for positive then the opposite colours for negative , for the video balun I use the blue pair and the solid for positive and pale blue for negative

[checkley101 0]

and finally you'll need the female ends for the dvr end , are you based in the uk?.

[jimmyNJ 0]

http://www.ltsecurityinc.com/passive-video-balun-transceiver-lta1010.html

 

that is the balun i'm using.

[jeromephone 6]

how much would it have cost to just run rg59/w 2 18 ga for power and then you could even run wall warts for power if you wanted to save money

[jimmyNJ 0]

I've always used Rg59 siamese. this is my first time with baluns. Another installer led me down this path so the customer is ready if they later upgrade to IP cameras. i hate to re-run cable but it appears that may be required. Will be going back to test soon.

[aibudo 0]

With the advent of the newer AHD/TVI systems, I'm staying with Siamese RG59/18-2. Not going to fight the issues with what you have found also.

[checkley101 0]

I too have reverted back to rg59 as I did 1 install with cat5 and had problems so I re cabled in rg59 wit no issues

[aibudo 0]

Kind of off the point, but the only "cat" that I use anymore is cat5 for LAN networking and cat6 to network CCTV between buildings for a central location control.

[tomcctv 190]

Hi. The problem is your baluns ....... The type with rj45 connection defeats the object of using baluns as 1 too many connections and 2 they only use 1 pair for power which is not enough for 100ft.

 

Change to single balun and use more pairs for power.... Save you a lot of time and money changing to rg59

[checkley101 0]

I won't ever be using cat5 again part from ip cams or lan connections to the dvr , I think it's too fiddly to do the baluns using cat5 , it's more time consuming aswell compared to using rg59

[tomcctv 190]

I won't ever be using cat5 again part from ip cams or lan connections to the dvr , I think it's too fiddly to do the baluns using cat5 , it's more time consuming aswell compared to using rg59

 

 

Hi. Use good baluns and it's much easier than BNC connectors

[Traumer 0]

Hi. The problem is your baluns ....... The type with rj45 connection defeats the object of using baluns as 1 too many connections and 2 they only use 1 pair for power which is not enough for 100ft.

 

Change to single balun and use more pairs for power.... Save you a lot of time and money changing to rg59

 

 

Hi, so then you do not recommend using this kind of Baluns in small installations, I mean small places, like 10 meters maximum path of cat5e for each camera ( using max 4 cameras 1200 TVL with IR) away from the power source 12v 5amp?