Video Balun
UTP cat-5 passive balun for CCTV camera system…?
I’ve been researching CCTV systems – standalone DVRs and cctv cameras – and I’ve come across something I don’t completely understand. I’m looking at using “passive baluns” to connect each camera to the dvr. Now the descriptions in every listing I read says something along the lines of “passive device – no external power required”. Does that mean simply that the BALUN itself doesn’t need a power supply, or does that mean that when using baluns the CAMERA doesn’t need an external power source?
It’d be awesome if the latter case were true, as my company is looking at a 16 camera system, and we’ll be running somewhere around 4000ft of cable. It’d be nice if we could just run a cat-5 cable from each camera instead of a video cable to the dvr AND a power cable to a reserved power supply box.
Any suggestions?
p.s. – example of the baluns I’m looking at: http://www.2mcctv.com/product_info-VITEKVTTR1M.html
Thanks!
The Passive Balun means you can transmit a video signal using cat5 cable.
The advantage is that you can transmit video over a longer cable run, usually up to 300m using passive balun. Normal coaxial cables have a limit of around 90m. The twisted cable pairs in cat5 is also good at rejecting electro interferrence.
‘No power required’ or ‘Passive’ means that you do not need a powered amplifier or any power source to extend the VIDEO SIGNAL ONLY…..up to 300m.
‘Active Balun’ is a powered balun which means it will amplify the video signal up to 1200m or so.
If you use the cat5 cable to run power to the cameras, the balun will not make any difference to the distance you can feed power. After 60m of cable, the voltage on most cables start to drop.
If you want a long cable run to power your camera, use a 14v power supply for 12v cameras or 28v psu for 24v cameras. In this case any voltage drop over the distance of the cable will be slightly compensated by the higher originating voltage.
Here’s a few tips
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1) Use a balun that has a power connector with it so you only need one device o make video & power conection on camera side e.g see the balun with the dc connector here http://www.cop-security-online.co.uk/acatalog/Shop__front_Passive_system_36.html
2) A trick I did on an installation with long distance cameras is use a 24vAC power supply then I used a 24vAC to 12vDC convertor guaranteeing I could get 12v on the camera end up to 250m away
Hope this helps.
SVB96HB Installation with video balun and Cat5e cable
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Konig Video Balun with RJ45 Connector and Power $35.69 |
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1CH Passive Receiver Transmitter Video CAT5 Balun Pair $5.50 |
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Konig Video Balun with Terminal Connector $19.00 |
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Security Labs SLA-40 UTP Video Balun $37.40 |
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CAT5 To Camera CCTV BNC Video Balun Transceiver $0.99 |
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Video Balun CCTV Monitor Side with Pwr $48.16 |
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Video Balun Cam Side BNC F Conn with Cable $40.41 |
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CCTV Camera 2 Pcs Video Balun BNC Passive Transceiver $7.26 |
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NEW AUDIO/VIDEO BALUN CABLBALANCED PASSIVE $33.24 |
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NEW BNC VIDEO BALUN PIGTAIL SCREW CABLBNC BALUN PIGTAI $20.24 |
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NEW AUDIO/VIDEO BALUN OVER CAT5E CABLKIT 95-1140 $46.24 |
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BNC Male Plug Video Passive Balun Transceiver 2 Pcs $6.94 |
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Camera Video audio Power Balun BNC to CAT5 – DVCCN701A $29.00 |
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König SEC-BLN21 Security Video Balun with RJ45 Connection $26.46 |
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Angel Cable Tool, Strips outer jacket of Cat5e cable,Coax Cable Cutter Wire Stripping Tool for RG6 RG59 RG7 RG11 Coaxial Stripper $7.99 For your variety of network needs, AngelSecurity has a tool specifically designed to maintain network accessories. easy to use. high quality Strips outer jacket of UTP/STP cable, CAT5/ CAT3 Cable Strips RG59/6/11/7 Coaxial Cable; Cable Cutter Function… |
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Video Balun UTP One Channel Passive Video Transceiver $2.30 This is a one channel passive video transceiver perfect for transmitting CCTV video at distances of up to 1200-9000ft. via a Cat5 cable. The product produces high quality images and has outstanding interference rejection. Get yours today and save!… |
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CCTV Video Balun Passive transceiver 8 CH BNC female $26.67 The Balun video transceiver / transmitter allows you to connect 8 coax BNC video signals from CCTV cameras to a signal that can be transmitted with 2pc Cat 5 RJ45 cable up to 700 feet. Two transmitters are needed per installation…. |
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Maria Isabel [NTSC/REGION 1 & 4 DVD. Import-Latin America] … |
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Balun Canan [NTSC/REGION 1 & 4 DVD. Import-Latin America] $7.46 Benito Alazraki: El Primer Mexicano triunfador en Cannes…. |
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UNA MUJER SIN AMOR [NTSC/REGION 1 & 4 DVD. Import-Latin America] by Luis Bunuel $9.95 UNA MUJER SIN AMOR… |
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BNC male to BNC female with mini cable 15cm on both sides $15.99 2MCCTV GB01 Coaxial Video Ground Loop Isolator Features: BNC Male to BNC Female with mini cable 15cm on both sides. Passive, no power required. Prevents Video-Signal distortion caused by video ground loops. Eliminates picture tearing, cross talk and rolling. Prevents power cables laid by others interfering with the CCTV system. Built in TVS (Transient Voltage Suppresors) for surge protection… |
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Gino 200M Transmission BNC RCA Audio Video Power Balun Adapter Transceiver $9.75 Enables cost-effective, point to point transmission appliance, adopts Twisted Pair Wiring, providing low cost and easily obtainable. Support all video device, such as camera, monitor, DVR card, recorder,etc. Built-in transient protection design, There is no need to use a ground connection for the Camera Video Balun Transceiver kit. The Max receiving and Transmitting distance of the Balun is up to … |
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KNOLL SYSTEMS HDHDMI Pack Decora-Type HDMI Balun Send/Receive Unit Pack $300.00 COMPLETE PACK OF DECORA-TYPE SENDERS/RECEIVERS & 12-CHANNEL AMPLIFIERREQUIRES 2 CAT-5 WIRESMAXIMUM WIRE LENGTH 80 FT FOR 1080P 150 FT FOR 480I/P 720P & 1080IRATED 1.3B @ 2340 MHZINCLUDES 1 KNLUDSHDMI SENDER 1 KNLUDRHDMI TRANSMITTER & 1 POWER SUPPLYUPC : 042887122949Shipping Dimensions : 7.25in X 6.15in X 4.00inEstimated Shipping Weight : 1.0972… |
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10 Pcs 2.1×5.5mm Male Jack DC Power Adapter for CCTV Camera $1.76 Product Name: DC Connector; Net Weight: 57g; Package Content: 10 x DC Male Connector; Power Plug features one power connector end DC female to another end terminal for CCTV camera connected; Support power for CCTV camera accessories, such as video balun; Easy to use, plug and work…. |
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