GLOSSARY OF TERMS
ACCESS code
Personal Identification Number. A four
AGC
Acquisition Gain Control.
Audio system
With digital satellite reception, the sound is transmitted in packages and is elected either in a special audio mode or
CA
Conditional Access. A system to control subscriber access to services, programmes and events.
CA Module
A device for the decoding of scrambled signals
Common Interface
Describes a DVB standard hardware and software architecture for Conditional Access systems.
DiSEqC
Digital satellite Equipment Control.
The outdoor unit comprises the antenna, one or more LNBs polarizers and external components.
MHz
The prefix mega means million, and Hertz means cycle per second.
Medimaster
A unit that converts the digital satellite signal into audio and video signals. The audio and video signal can be send to the TV set either via SCART or via RF(modulator output).
MPEG
Moving Picture Experts Group. Body established by the international Standards Organization to provide the basis for a picture coding and Compression system.
.
Network
A number of digital channels transmitted from one source. Grouped under separate headings in the channel list.
Parental control
A feature that allows parents to “lock:” programmes that they consider unsuitable for children. A “locked” channel or programme can only be “unlocked” with the special parental access code.
Polarization
Polarization allows several programmes to be fit into the same frequency band. The signal from the satellite are transmitted either with linear (Vertical or Horizontal ) polarization or circular (right or left) polarization.
RF
DVB
The Digital Video Broadcast group was created to establish a technical frame work for the introduction of digital video broadcasting systems.
EPG
Electronic Programme Guide. A software that enables viewers to navigate easily among the large number of channels provide by digital technology, in order to select the service they desire.
FEC
Forward Error Correction. Correction of faulty bits in the received signal.
GHz
The prefix giga means billion, and Hertz means cycles per second. Signal in the GHz range are often called microwaves.
LNB(Low Noise Block converter)
An electronic unit mounted on the satellite dish. It recovers the signals reflected by the dish and converts them to signal that can be used the mediamaster.
Radio Frequency(known as HF in some countries).
SERIAL RS232
A serial communication standard data port.
Satellite dish
A
SCART
A
Symbol rate
Size of the digital package transmission.
S.W
Software. Program code.
PID:Packet Identifier.
PCR:Program Clock Reference.
BER:Bit Error Ratio.
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