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Baluns
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| nickspwi |
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Posts: 2
Joined: 06 Feb 2008
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Posted: Thu Feb 14, 2008 9:23 pm
Post subject: Baluns
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If i am useing cat 5 Should i be useing all wires for video baluns?
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| RickA |
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Posts: 604
Joined: 28 Sep 2007
Location: Kentucky
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Posted: Fri Feb 15, 2008 7:59 am
Post subject:
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How many camera's? Usually use one twisted pair per balun. 
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| survtech |
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Posts: 606
Joined: 21 Mar 2007
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Posted: Fri Feb 15, 2008 9:10 am
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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.
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| Smit9352 |
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Posts: 202
Joined: 14 Feb 2008
Location: Louisiana
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Posted: Fri Feb 15, 2008 3:56 pm
Post subject:
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| RickA wrote: |
| How many camera's? Usually use one twisted pair per balun. |
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
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| CCTV_Suppliers |
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Posts: 562
Joined: 07 Sep 2007
Location: Southern California
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Posted: Fri Feb 15, 2008 4:41 pm
Post subject: Re: Baluns
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| nickspwi wrote: |
| If i am useing cat 5 Should i be useing all wires for video baluns? |
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... 
If you are running this cable for just a PTZ (Pan Tilt Zoom) capabilites.">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....
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| si_kungs |
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Posts: 210
Joined: 16 Mar 2008
Location: Philippines
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Posted: Mon May 12, 2008 4:44 am
Post subject:
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how long can we run the ptz control (rs-485 ) over cat5E?
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| CCTV_Suppliers |
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Posts: 562
Joined: 07 Sep 2007
Location: Southern California
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Posted: Mon May 12, 2008 11:49 am
Post subject:
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| si_kungs |
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Posts: 210
Joined: 16 Mar 2008
Location: Philippines
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Posted: Tue May 13, 2008 9:10 pm
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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
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| survtech |
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Posts: 606
Joined: 21 Mar 2007
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Posted: Tue May 13, 2008 11:35 pm
Post subject:
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| si_kungs wrote: |
| how long can we run the ptz control (rs-485 ) over cat5E? |
4000 ft. max. using RS422/RS485.
| si_kungs wrote: |
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 |
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.
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| si_kungs |
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Posts: 210
Joined: 16 Mar 2008
Location: Philippines
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Posted: Wed May 14, 2008 1:14 am
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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
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| cocacola |
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Posts: 120
Joined: 12 Feb 2008
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Posted: Wed May 14, 2008 6:35 am
Post subject: Re: Baluns
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| nickspwi wrote: |
| If i am useing cat 5 Should i be useing all wires for video baluns? |
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 -
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| si_kungs |
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Posts: 210
Joined: 16 Mar 2008
Location: Philippines
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Posted: Fri May 16, 2008 10:50 pm
Post subject:
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how long can we run the power in the cat5e before it falls below the operating voltage?
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| cocacola |
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Posts: 120
Joined: 12 Feb 2008
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Posted: Wed May 21, 2008 3:19 am
Post subject:
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| si_kungs wrote: |
| 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
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| si_kungs |
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Posts: 210
Joined: 16 Mar 2008
Location: Philippines
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Posted: Thu May 22, 2008 10:40 pm
Post subject:
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| cocacola wrote: |
| si_kungs wrote: |
| 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 |
what is you input voltage 12V or 13.8?
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| cocacola |
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Posts: 120
Joined: 12 Feb 2008
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Posted: Fri May 23, 2008 1:51 am
Post subject:
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