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UTP Cabling FAQ |
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| What is UTP Wire? | ||||||
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UTP is "Unshielded Twisted Pair" wire or cable; also called "paired" cable. This is the type of cable that works best with the video balun transmission systems.
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| What type of UTP Wire works best for twisted pair video transmission? | ||||||
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The twisted pair video balun transmission systems operate well over UTP wire gauges from 12 AWG through 26 AWG. The systems are optimized for 24 AWG and distance specifications given are for 24 AWG.
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| Why do the wires have to be twisted? | ||||||
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Our system utilize a "balanced output" design. Sending the video signal into a twisted pair provides an effective method of canceling extraneous noise and interference. Untwisted pairs are not recommended, since the system becomes susceptible to interference, which will be eshibited in a degradation of the video display whenever extraneous signals are present.
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| Can Twisted Pair Video Signals Be Run Near Primary Power Lines? | ||||||
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Where allowed by local electrical code, twisted pair video signals can be run in close proximity to primary power lines due to the built-in common mode rejection of interference and noise in the systems.
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| Does the Cable Category Designation Matter? | ||||||
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Category 2 through Category 5 cable is recommended. Other types of cable may work in situations where alternatives are limited.
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| Can Video Signals Be Run in Opposing Directions in a Common Cable? | ||||||
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Video signals should not be run in opposing directions in a common twisted pair cable; that is, with transmitters and receivers on the same end of a cable. When signals are run in opposing directions, cross-talk problems may be encountered.
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| Can Transmission Distance Be Increased if Two Cable Pairs are Paralleled? | ||||||
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Paralleling pairs in a cable, while decreasing the loop resistance, increases the cable electrical capacitance, so the advntage is negligible. Also, by separating the pairs the advantages of twisted pair for noise immunity are lost. This approach is not recommended.
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| Can the Video Signal Be Repeated to Extend Operating Range? | ||||||
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The video signal can be repeated using our system with an active transmitter and receiver.
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| What are the Dip Switches on the Active Transmitters and Receivers Used For? | ||||||
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The DIP switch adjustments, unique to our product line are provided on all of the active transmitters and receivers. This is the only effective method of providing true video signal compensation, equalization and amplification, for the wide range of operation that is required.
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| How Can PTZ Control Be Done with Our UTP Video Balun? | ||||||
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For "One coax" system in applications under 2000 feet (600 meters), the video balun transceiver can be used to provide video and control over a single twisted pair under 1000 feet using RS422/RS485 signal.
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| Can Twisted Pair Video Signals Share a Common Cable with Other Signals? | ||||||
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Twisted pair video signals can be run in a common multi-twisted pair cable, such as Category 5 UTP cable, with other video, data and control signals. The only caution in this regard is that the video signals all be run in the same direction.
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| How Many Video Signals Can be Run in a Common Cable? | ||||||
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There is actually no limit as to the number of video signals that can be run in a common unshielded twisted pair cable.
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| What is Ground Loop and How Do IFix Interference From It? | ||||||
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Cameras and equipment that run wires between buildings or over greater distances are at risk of having video disruptions due to ground loop. Most commonly represented by a thick black bar across the image, that may or may not roll. Every electrical item (camera, receiver, monitor, etc) is connected to the ground. The ground has its own electrical potential. If there is a large difference between the potential in the ground where the camera is located and the ground where the monitor and equipment are located; then an excess of electricity can find it's way traveling through the video cables and cause disruptions, which we refer to as ground loop. A good way to fix or prevent this problem is to use the Ground Loop Filter. These devices contain electrons designed to prevent the excess of electricity from disrupting the signal.
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| Can the Wires Be Spliced or Connected Through Punch-down Blocks? | ||||||
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Yes. The signal is highly immune to interference, allowing it to be installed near these noise-generating sources. For life safety and electrical code reasons, never install twisted pair wire in the same conduit as high-voltage wiring.
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| What is the Proper Way to Extend UTP Cables? | ||||||
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Use an inline coupler to extend the UTP video balun cable connection.
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| How Can I Reduce the Distortion? | ||||||
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It is recommended that you add one or two of the specially made "distortion immunized adaptors".
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