Effective isotropic radiated power
A measure of a satellite’s signal strength from the ground.
Angle between the earth's surface and a particular satellite at a given reception point 0° for horizontal angle and 90° o for vertical.
Encryption enables programme providers to control the distribution of pay-TV television channels, for example. Only authorised viewers can view the encrypted channels. Examples of encryption systems are VIACCESS, NDS, and CONAX. See also Smart CardSmart Card.
Electronic programme guide
Sophisticated on-screen TV listings guide which provides current and future programme details. It has features such as subject or channel searches, programme summaries, immediate access to a selected programme, plus reminder and parental control functions.