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* Megahertz (MHz) : Millions of cycles per second, which describes frequencies
of radio wave or electric current.
* OSD: Abbreviation of "On Screen Display", used in digital set top box. OSD is
comprised of a main menu and many submenu with lots of options of functions
inside.
* PAL : Stands for "Phase Alternating Line", the European video standard which has the image
format of 4 by 3,625 horizontal lines, 50 Hz and a total 8 MHz of video channel width.
* PID : Stands for "Packet Identifier". It is a code used for identifying video, audio PCR and other
elements that form a particular service in the transport stream.
* RF Channel : Radiated Frequency Channel, for instance channel 28 for SBS Network in analog
TV transmission. However in digital TV, one RF channel may carry 4 to 6 subchannels like
SBS HD, SBS Digital.
* S-Video (also called Y/C) : The standard for the way a video signal is carried on the cable. Y
represents brightness and C represents colour. S-Video cables have separate wires for the
colour and brightness so it offers a better picture quality than the composite video.
* VHF : Stands for "Very High Frequency", starts from 30 to 300 MHz corresponding to channels 5-
12, including Bands I, II and III.
* UHF : Stands for "Ultra High Frequency", starts from 300 to 3000 MHz corresponding to channels
28-69, including Bands IV and V.
* Y/Pb/Pr : Component Video Output. It is better than S-Video and Composite Video output in terms
of picture quality. Y/Pb/Pr is the standard HDTV connector.