There are a number of key terms used within the audio, video and data communication industry that can leave some people wondering what is being discussed or suggested.
HB Digital aerial and satellite engineers North Wales always use easy to understand language to ensure you know exactly what is going on, through any type of experience with us.
For those that wish to learn more themselves, here is a compiled list of some of the key words, terms and jargon that you might come across in conversation with members of the industry.
Boosts the signal of a TV, radio or satellite
One of the traditional ways of broadcasting both television and radio. Analogue signals represent pictures and sound in their ‘raw’ format, whereas the digital signal codes the pictures and sound into computerised data.
Short, medium and long wave radio waves (FM and AM)
This is relationship between the width and height of a TV screen. Traditional TV screens have aspects of 4:3, whereas a widescreen set will have an aspect ratio of 16:9, which is how the black border is achieved to create the cinema screen shape.
This is an electronic device that reduces the power of a signal, without appreciably distorting its waveform
Spoken commentary that is used on television, largely useful for visually impaired viewers. Commentary will fit in between dialogue and describes action sequences, facial expressions, costume, scenery etc.
The range of frequencies that are employed to transmit signals. We can imagine this as the amount of space that is required on the airwaves to transmit a programme.
Another name for ‘Amplifier’
Broadband is the system that carries signals over a range of frequencies and bandwidth. The wider the bandwidth, the more information that can be carried. Hence a broadband internet connection gives you high-speed downloading of video and audio.
Conditional Access (CA
The code used to refer to channels you require a viewing card to watch.
Chimney lashing kit
This is used to secure an aerial to a chimney
The type of cable that is used to carry signals to the aerial, dish or the receiving equipment
A combiner using two or more aerial leads and signals into one single coaxial cable, such as TV/FM TV/SAT TV/DAB
This is the part of the aerial that a cable will connect to
A signal that has been sent down from a satellite all the way down to the ground
Digital satellite, used for by digital TV that are received through a satellite dish
Digital terrestrial television that is received via standard aerial – for example; the UK uses Freeview supplied through this method
An abbreviation for ‘Digital Television’
Digital Video Broadcasting, a worldwide standard for digital TV technology
Digital versatile disc (originally digital video disc) – which give superior picture and sound quality that a video cassette and have greater storage capacity than CDs.
Digital visual interface; a digital connection for high quality video; which is suitable for high definition televisions
Digital video recorder: more commonly known as a personal video recorder (PVR), which records TV programmes digitally to a hard disk, in similar fashion to how we save information on a computer
This is commonly used to describe an equip
These are a series of tuned elements that are forward of the dipole
A single frequency that contains a number of radio channels, a digital radio associated term
Electronic programme guide (EPG)
This is software that is built into a set-top box, giving on screen listing of what is being played now and what is on later. You might know this in the form of ‘TV guide’ or alike.
This terminates coaxial cables for allowed insertion to appliances
The device that couples F Connectors together
Stereo analogue radio reception, alternative to DAB, however it can’t receive ALL radio signals
Available in a variety of sizes, an FM Aerial boosts FM radio reception
A system using a satellite dish and receiver. As the name suggests, it is free – however you have to pay your box and installation (and in some variants pay a provider, eg Sky).
The main UK digital television service, whereby no subscription is required
Hot dipped treatment for steel to prevent and prolong rusting
Repeat images on analogues TV sets which is normally caused by reflected signals
A television aerial with two or more dipoles, and a grid reflector
A television aerial that can receive a segment of UHF (terrestrial TV) channels
An electronic storage device used for large amounts of digital information. Computers have hard disks inside of them, whilst other computer-like devices such as video recorders also make use of this technology. It allows the ability to store many hours of TV programmes on a hard disk.
High Definition (HD)
High definition television has up to 4x as many pixels more than standard screens. Standard screens have 625 lines, whereas HD screens have 720 or 1080 lines – giving clearer, sharper picture, with much more detail. Nowadays, HD is fairly standard and most households have transitioned to this type of television.
High Definition Recorder (HDR)
HDR is a term used for the device that is built into a satellite receiver or Freeview box
HDMI (High-definition multimedia interface)
This is a digital connection that uses a single cable for high-quality video and audio.
A multi-aerial that utilises at least 13 elements
An integrated digital television that uses a TC set with built-in digital TV receiver, which can get a digital terrestrial TV signal without a set-top box
Beyond normal television watching, it allows extra information about programmes, the ability to watch other news stories and sports coverage, join quizzes and voting. This is often accessed via the ‘red button’ on your remote, though not all providers offer this.
A kit used in order to effectively secure an aerial or satellite dish to a chimney
A technology used within televisions that stands for ‘liquid crystal display’. It is particularly suitable for large televisions
LNB (Low Noise Block) – Quad
A dish mounted device that converts satellite signals to send the reception through multiple receiver boxes via the coaxial cable
LNB (Low Noise Block) – Quattro
A dish mounted device that converts satellite signals to send the satellite reception to multiple switches onto multiple receivers
LNB (Low Noise Block) – Solo
This is a dish mounted device which converts satellite signals to send the reception through to a single input satellite receiver via the coaxial cable
Internal aerial mounting various types
This is a type of widescreen picture (16:9) that can be displayed on a standard TV screen, which can be commonly recognised by the black bands at the top and bottom of screen.
Magic Eye Device
This is the ‘sensor’ at the top of the remote which communicates with the box to control the guide/change channel
A system that distribute signal to more than one room in a property
The broadcast standard in America and Japan
A multi-directional aerial that is used with FM and DAB radio reception
A plate flush to the mount patris or back box set in the wall
Broadcast standard that is used in United Kingdom, Australia and some other countries
A small transmitting device and receiver that is used when a telephone point is required in a position where hard wiring a cable is not a viable option
A picture element – it is one single dot on a screen. The more pixels, the better the picture
A technology that displays a TV picture on a flat-panel screen by using gases behind the glass – particularly effective and suitable for large-size screens
UHF signal that is transmitted on either horizontal or vertical polarities, satellite signal is both horizontally and vertically transmitted
Pay Per View (PPV)
An individual show or series that you must pay separately to receive access to
A signal booster that is directly installed on the aerial, with power supply unit that is usually next to the TV
Power Supply Unit (PSV)
This converts the mains voltage to 12v and energises the pre-amplifier via the ‘down lead’
Radio Data System
Found in many car radios, a radio data system automatically chooses the strongest FM signal available so you don’t need to retune when moving around. This also detects and switches to travel bulletins broadcast by BBC local radio stations
Equipment that receives and decodes signals from a transmitter so you can see and hear TV and radio broadcasts. The set top boxes are examples of the receivers
A low-power transmitter that enables you to receive signals from a main transmitter and retransmits them to a localised area
Radio Frequency (RF)
Used to feed a TV signal from an aerial to a TV, set top box, video recorder etc.
Where RF connectors are used to feed in TV signals from an aerial to a set top box and then again to a TV or recorder
This is used for downloading software updates from your PC, which can also be achieved via satellites via installation menu
When you plug in your TV set-top box, or a DAB radio, it will scan to find all available channels
A scart lead has a large, rectangular, 21-pin plug at each end and is a way to connect equipment like TVs, video recorders, DVD players and set-top boxes
Standard Definition (SD)
Used to describe a standard definition receiver as opposed to High Definition
The broadcast standard used in France in some other countries
Sky digital satellite system that gives users access to hundreds of digital channels and a range of pay to view movies, interactive services and radio stations
Sky digital that comes with recording facilities, enabling users to view and control what they use such as pausing, rewinding and replaying
Sky in high definition, giving a better picture with vibrant colours – only available full with certain subscribed channels
Sky Free Sat
The sky digital system that provides access to a range of free to watch channels, so no monthly subscription is required
Satellite Master Aerial TV (SMATV)
Sky/UHF reception distribution system
An item used to share the signal from one to a number of outputs
A set top box used to describe digital decoder or satellite receiver
Television that is broadcasted from transmitters on the ground and then received through an aerial
A signal that is sent up to a satellite from the ground
Broadcasting television and other media via the internet
A term that is used to describe a TV aerial that covers transmissions from bands 21-68
TV pictures that are set with an aspect ratio of 16:9 – most programmes on most of the major TV channels are now in widescreen format
Short for ‘wireless fidelity’, Wi-Fi is a technology that lets you get on the internet and share computer files without cables
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