GB 27Glossary of termsMPEG Moving Picture Experts Group. A system forcompression of digital data.NVOD Near Video On Demand. System for ordering pro-grammes.PID Package Identifier.PIN code Personal Identification Number.A four-digit code that is used for locking/unlocking, e.g.with the parental control feature. Default value is nor-mally 0000 or 1234.Satellite dish A dish-shaped antenna (reflector) to re-ceive signals from a satellite. The dish focuses the sig-nals on the LNB.Parental control A feature that allows parents to "lock"programmes that they concider unsuitable for children.A "locked" programme can only be "unlocked" with thespecial secret code (PIN code).Polarisation Polarisation allows several programmes tobe fitted into the same frequency band. The signals froma satellite are transmitted either with linear (vertical orhorizontal) polarisation or circular (right or left) polarisa-tion.PPV Pay Per ViewRF Radio frequency (known as HF in some coun-tries).RS 232 Serial data portSCSI High speed data interface. A special connectorfor e.g. a CD-ROM player.SCART A connector used for connection of e.g.Mediamasters, video recorders and TV sets. Also namedEuroconnector or Peritel connector.Symbol rate Size of the digital package transmission.TS Transport Stream. No TS indication on the displaymeans that there is no signal in to the Mediamaster.VCR Video Cassette Recorder.Access Authorisation to use the coding system topurshase/order TV programmes.Audio system With digital satellite reception, thesound is transmitted in packages and is selected eitherin a special audio mode or pre-selected by using instal-lation set-up. This gives the opportunity to select be-tween several different languages to a movie. Amountof choices is dependent on what is available in the sig-nal.CA Conditional AccessCoded satellite TV programmeSome satellite TV programmes (PAY TV) are transmit-ted in encoded form. A CA module and a Smart Card isneeded to view such programmes.DVB Digital Video BroadcastEPG Electronic Programming Guide. Programme in-formation shown on the TV screen.FEC Forward Error Correction. System for correctionof bit-errors which can occur during a transmission.GHz Abbreviation for GigaHertz. The prefix Gigameans billion, and Hertz means cycles per second. Sig-nals in the GHz range are often called microwaves.IPPV Impulse Pay-Per-View. System for, via the builtin phone modem, quick ordering of some special pro-grammes e. g. movies and sport.LNB (low-noise block converter) or LNBFThe LNB is an electronic unit mounted on the satellitedish. It receives the signals reflected by the dish and con-verts them to signals that can be used by the Media-master.L.O. Local Oscillator. Part of the LNB. It converts thesatellite frequency to a usable signal for the Media-master.Mediamaster The unit that converts the digital satellitesignals from the LNB into audio and video signals. Theaudio and video signal will be sent to the TV set viaSCART.