GENESIS 65081008 RG11 CCS Dual Shield General Purpose CATV Cable Instructions
- June 13, 2024
- Genesis
Table of Contents
Anatomy of a Cable Coax Cable
Coax cables are a cable style used primarily for video, data and voice applications, such as video surveillance and cable and satellite television. Let’s explore the components of coax cables.
1. Dielectric
A region that separates the conductor and shield. The material type and
thickness determine the cable’s electrical characteristics.
2. Shielding
Coax cables protect against interference using a variety of shielding types.
Three of the most common shield types include braid, dual or quad.
- Braid: High-coverage, single braid shield guards against Electromagnetic Interference (EMI). Works best with low-frequency applications, like analog video surveillance.
- Dual and Quad: Built with aluminum braid and foil shields and protect against Radio Frequency Interference and EMI. Ideal for high frequency applications, like satellite TV.
In most applications, dual shields offer enough protection, but quad shields can be used when the threat of interference is high.
Braid Dual Shield Quad Shield
3. Conductor
Single solid or stranded conductor, commonly made of pure copper or copper
clad steel.
- Pure Copper: Essential for low frequency applications such as analog video surveillance or when the cable transmits power in addition to video (e.g. satellite television).
- Copper Clad Steel: Appropriate for most broadband television applications.
Pure Copper Copper Clad Steel
4. Jacket
Material coating that covers all of the cable’s components and provides
physical protection. The jacket material also helps dictate a cable’s fire
and outdoor ratings, which determine where a cable can be installed.
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References
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