Dreambox DM 5600-S, Instruction Manual

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G L O S S A R Y
2 9 . G l o s s a r y
2 9 .G l o s s a ry
87
2 9 . G l o s s a ry
I P
I n t e rnet Protocol. Level 3 protrocol in the TCP/IP communications standard. It mediates data
p a ckets in "insecure" mode. The Internet is based on the protocol.
I R
I n f ra red. A wavelength which lies below that of visible light. It is used for data tra n s m i s s i o n ,
e. g. for very small computers (PDAs) and for remote control units.
L C D
Liquid Crystal Display is a technology which is used in notebooks and other computers for pre-
senting images and symbols. In contrast to LED (light emitting diode) and gas plasma tech n o l o-
g i e s , LCD allows a much higher resolution than cathode ray tube technology (CRT, cathode ra y
t u b e ) .
LNB /LNC
L ow Noise Blockconverter / Low Noise Converter (feed system). Converts the downlink satellite
f requencies to 1.Sat-ZF. Receiver component on or in the satellite antenna, w h i ch receives the
high frequencies of the satellites, amplifies them, and converts them to the lower medium fre-
q u e n cy.
L O F
Fixed fre q u e n cy around which the high input fre q u e n cy of the satellite signal is tra n s l a t e d
( L . O. F.=Local Oscillator fre q u e n cy ) .
M C P C
Multiple Channel Per Carrier. Transmission system which uses a single transponder for multiple
channels (see also SCPC).
M H z
Megahertz. Number of oscillations of a signal per second. Unit: Hertz. One kilohertz (kHz) cor-
responds to a thousand oscillations per second, one megahertz (MHz) to a million oscillations
per second, and one gigahertz (Ghz) to a billion oscillations per second.
Mini-DiSE qC
Two universal single LNBs, for digital and analog, reception can be controlled with the help of
the "Tone-Burst" analog switching signal (also known as Mini-DiSEqC). 14/18 volts and 22 kHz
a re then controlled over a special DiSEqC multi-switch .