Which type of data cable is used by television companies to carry data and video signals?
|
Show
Everything You Need To Know About Coaxial Cable What is Coaxial Cable?Coaxial cable, sometimes known as coax cable, is an electrical cable which transmits radio frequency (RF) signals from one point to another. The technology has been around since the early 20th century, with these cables mainly being used to connect satellite antenna facilities to homes and businesses thanks to their durability and ease of installation. What is RG cable?There are different types of coaxial cable, which vary by gauge and impedance. Gauge refers to the cable’s thickness and is measured by the radio guide measurement or RG number. The higher the RG number, the thinner the central conductor core is. What does a Coaxial Cable look like?Coaxial cable has a distinct thick, round shape because of its interior insulation layer. Its size makes it look very different to other types of cable, such as twisted pair or Ethernet cable. The most commons sizes of coaxial cable are RG-6, RG-11 and RG-59 – some of the size differences are demonstrated in the image below. How do Coaxial Cables work?Coaxial cables are a popular choice because their shielded design allows the centre conductor to transmit data quickly while being protected from damage and interference. Coaxial cables are mainly built up of these four different layers:
The first layer, called the dielectric, provides distance between the core conductor and the outer layers, as well as some insulation. The next layers, collectively referred to as the shield, keep electrical impulses and radio transmissions out. The different layers of a coaxial cable are shown in the image below: What is the transmission speed of Coaxial Cable?The transmission speed of coaxial cable is 10Mbps (megabits per second), and they offer 80 times more transmission capacity than twisted pair cables. Coaxial cable advantages and disadvantagesAdvantages of coaxial cable
Another benefit of coaxial cable is the electromagnetic field carrying the signal exists only in the space between the inner and outer conductors. This means coaxial cable can be installed next to metal objects without losing power, unlike other types of transmission lines. Disadvantages
of coaxial cable Coaxial cable types There are two main types of coaxial cables – ones with an impedance of 75 Ohm (Ω) and ones with an impedance of 50 Ohm. What’s RF coaxial cable? What’s RG-6 cable? What’s RG-59 cable? What’s RG-11 cable? What are Coaxial Cables used for?Coaxial cable for TV Poor quality coaxial cable can impact TV reception, so it’s important to choose the best cable for the job. Coaxial cable for HDTV (high-definition) The best coaxial cable for HDTV is RG-11. Coaxial cable for the internet Coaxial cables can be used to carry signals for internet connections, but internet signals run at higher frequencies than traditional analogue video. RG-6 cable was designed to fulfil this requirement. It has a larger conductor, which provides a much better signal quality, and the dielectric insulation is thicker. RG-6 cables are also made with a different kind of shielding, which means they can carry GHz level signals more effectively. Coaxial cable for CCTV RG-59 coaxial cable is the best type for CCTV systems, but RG-6 can also be used. RG-6 can run longer distances than RG-59 without loss to a video signal, however, it’s a thicker, firmer cable which isn’t as convenient to work with. Coaxial cable for video The most common types of coaxial cable for video are RG-59 and RG-6. Of these, RG-59 is the industry standard cable, whereas RG-6 is better for digital video signals. What is a coaxial splitter?When coaxial cable lines are produced, they only provide one signal to power a singular device. This can be problematic if there’s more than one device which requires a signal. Coaxial splitters are used when there’s more than one device which requires a signal. They’re small devices designed to attach to coaxial cable to split the signal into several lines to connect to multiple devices. What is a coaxial port?A coaxial port is a single female RCA connector. The port on a device is most likely to be labelled as 'coaxial', but could also be something such as 'digital out' or 'digital in'. To help distinguish it, the coaxial port is usually colour-coded orange or black. Coaxial Cable SizesTo help identify the different types of coaxial cable, here’s a size guide:
Coaxial cable connector typesCoaxial cable connectors are used to connect cables to other devices and maintain the cable’s shielding. There are two distinct connector styles – known as male and female. Male connectors have metals pin which protrude from the centre and female connectors have a recessed hole to receive the pin. Here are some of the most common coaxial connector types and their applications:
Product spotlightsWhat type of cable is used for cable TV?Coaxial cable (or "coax") is the most common cable used for transmitting video signals. The name "coaxial" refers to the common axis of the two conductors.
What is a coaxial cable used for?Coaxial cable is a type of copper cable specially built with a metal shield and other components engineered to block signal interference. It is primarily used by cable TV companies to connect their satellite antenna facilities to customer homes and businesses.
What is the most common type of wired media used by TV companies to connect and carry signals to set top box within a home?Coaxial cable is a primary type of copper cable used by cable TV companies for signal distribution between the community antenna and user homes and businesses.
What is a coaxial cable for TV?Coaxial cable, also known as TV aerial cable or coax, is primarily used to carry video and data signals from an aerial to a device such as a satellite dishes or television. This is due to the well insulated conductor wire which prevents frequency interference.
|
