If i am useing cat 5 Should i be useing all wires for video baluns?

How many camera's? Usually use one twisted pair per balun. :)

You can, but you don't have to. We often use only one pair of a CAT-5 4-pair for video. Sometimes we use more; it depends on the location of the cameras. If we have multiple cameras using UTP that are close together, we will use multiple pairs - one for each camera.

For video, you can just splice wires together using "beans". You just have to make sure to leave the twists in as much as possible.

The last 3 applications where I used video balluns I did it all within just one cat-5 cable. I ran the entire cable all the way to the end to the last camera and took 2 wires out and ran them to my ballun. Then went back to the 3rd camera and did the same then to the 2nd and finally the 1st. This was a very short run (by short I mean less than 400ft) and it is still functioning properly even after 11months so far.

Goodluck!

Thanks,
John

Depends on your application... If you are running this cable to control PTZ dome, then you can use one of the pairs for data, another pair for video, another one for power and extra pair for spare... :D

If you are running this cable for just a fixed camera, then dependent on your cable runs, it may not be cost effective, as balun costs run an average of $30.00 per pair... and instead, you can use Siamese cable....

how long can we run the ptz control (rs-485 ) over cat5E?

As long as your are referring to data transmission, you are safe up to 1,000'

ok. also for color camera can it degrade the color if the cat5e run to long? how long can we run cat5E using the ff setup:

1. passive balun tx >>>>> passive balun rx

2. passive balun tx >>>>> active balun rx

3. active balun tx >>>>>> passive balun rx

4. active balun tx >>>>>> active balun tx

tx - transmit
rx - receive

thanks

4000 ft. max. using RS422/RS485.



I would run passive-passive no more than 700-800 ft., passive-active (either way) no more than 1,500 ft. and active-active no more than 3000 ft. The shorter for each, the better.

have tested it before on 1 roll (305m ) of cat5e. tried to use 1 pair and connect it to the remaining pair on the bundle of wire to make it double, triple its length. but when we test the color picture carrier was attenuated and picture become black and white

No just one pair for each camera!

Power you can also do over cat5 or better(more copper for power) cat 6!
I have put two twisted wires pars for power.

balums on pair each


power no balum, but use a pair for + and one pair for -

how long can we run the power in the cat5e before it falls below the operating voltage?

No voltdrops At 15 meters.

At 40 meters i have to put 15 volt in to get 12.5 out. Whit 1 Amp

[quote:7eb98cd48f="cocacola"]

No voltdrops At 15 meters.

At 40 meters i have to put 15 volt in to get 12.5 out. Whit 1 Amp