IPricot IPR-S1000 User Manual

Page 104

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MCPC
Multiple Channel Per carrier. DTH satellite TV programmers use a transmission
format called Multiple Channel Per Carrier to multiplex two or more program services
into a single unified digital bit stream. With MCPC, a package of program services can
use the same conditional access and forward error correction systems, thereby
economizing on the overall bandwidth and transmission speed requirements.

Microwave
The frequency range from approximately 500 MegaHertz (MHz) to 30 GigaHertz
(GHz).

Modem
MOdulator-DEModulator. A device that adapts a terminal or computer to a telephone
line converting the computer’s digital pulses into audio frequencies (analog) for the
telephone system and converts the frequencies back into digital pulses at the receiving
side.

Modulation
The alteration of a carrier wave in relation to the value of the data being transferred.
Analogue satellite transmission use FM modulation . Digital satellite transmission use
QPSK modulation.

MPE
Multi Protocol Encapsulation.

MPEG
Moving Pictures Experts Group. A proposed International standards organisation (IS)
standard for digital video and audio compression for moving images.

Multicast
A special form of broadcast where copies of the packet are delivered to only a subset of
all possible destinations.

Network
An interconnection of computer systems, terminals, or data-communications facilities.

NTP
Network Time Protocol. Protocol built on top of TCP that assures accurate local time-
keeping with reference to radio and atomic clocks located on the Internet. (see RFC
1305).

Packet
A sequence of data, with associated control information, that is switched and
transmitted as a whole.

PES
Packetized elementary stream (MPEG elementary stream after packetization).

PID
Packet Identifier (PES identification number in the DVB standard).

Pixel
The smallest element or dot on a video-display screen.

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