Glossary
Multichannel digital audio encoding system.
Access code
A
Access control
A feature that allows parents to ”lock” programmes that they consider unsuitable for children. A ”locked” chan- nel or programme can only be ”unlocked” with the spe- cial access code.
AGC
Automatic Gain Control.
BER
Bit Error Rate. Signal quality measure.
C/N
Carrier to Noise. Signal quality measure
DVB
The Digital Video Broadcast group was created to estab- lish a technical framework for the introduction of digital video broadcasting systems.
GHz
The prefix giga means milliard, and Hertz means cycles per second. Signals in the GHz range are often called mi- crowaves.
MHz
The prefix mega means million, and Hertz means cycles per second.
MPEG
Moving Picture Experts Group. Established by the Inter- national Standards Organisation to provide the basis for a picture coding and compression system.
Network
A number of digital channels transmitted from one source.
PCM
Pulse Code Modulation.
PCR
Program Clock Reference.
PID
Packet Identifier.
RCA
Coaxial connector used to connect the Mediamaster to an external amplifier.
RF
Radio frequency (known as HF in some countries).
RGB
Red, Green, Blue. Colour signals are routed in separate cables in order to provide a high quality TV picture.
SERIAL RS 232
A serial communication standard data port.
SCART
A
Scrambled TV programme
Some TV programmes are transmitted in scrambled form.
Service provider
Is a company that collects a number of programmes/serv- ices and distributes them to customers.
S/PDIF
Sony/Philips digital interface format. Digital audio output.
Symbol rate
Speed of the digital transmission
SW
Software. Programme code.
TS
Transport stream.
VCR
Video Cassette Recorder.
GB 33
