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IR
Infrared. A wavelength which lies below that of visible light. It is used for data
transmission, e.g. for very small computers (PDAs) and for remote control
units.
LCD
Liquid Crystal Display is a technology which is used in notebooks and other
computers for presenting images and symbols. In contrast to LED (Light
Emitting Diode) and gas plasma technologies, LCD allows a much higher
resolution than cathode ray tube technology (CRT).
LNB /LNC
Low Noise Blockconverter / Low Noise Converter (feed system). Converts the
downlink satellite frequencies to 1.Sat-ZF. Receiver component on or in the
satellite antenna, which receives the high frequencies of the satellites,
amplifies them, and converts them to the lower medium frequency.
LOF
Fixed frequency around which the high input frequency of the satellite signal
is translated (L.O.F. = Local Oscillator Frequency).
MCPC
Multiple Channel Per Carrier. Transmission system which uses a single
transponder for multiple channels. (see also SCPC).
MHz
Megahertz. Number of oscillations of a signal per second. Unit: Hertz. One
kilohertz (kHz) corresponds to a thousand oscillations per second, one mega-
hertz (MHz) to a million oscillations per second, and one gigahertz (GHz) to a
billion oscillations per second.
Mini-DiSEqC
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 are then controlled over a special
DiSEqC multi-switch.
MIPS
Millions of Instructions Per Second. Measurement of millions of machine
instructions carried out per second. Wags say it stands for „Misleading
Interpretation of Processor Speed“. Also a company of this name which
produces processors and other chips (in RISC architecture).
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20. Glossary of terms
20. Glossary of terms