*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.
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*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
*Y/Pb/Pr : Component Video Output. It is better than
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