10.0 Glossary
(1) 22KHz switch
A tone that can be sent via the LNB coax, this tone can control the LNB or switches on
the coax cable. Do not interfere with the DC or 22KHz tone that the receiver sends to
the dish.
(2) Antenna
A device that collects electromagnetic waves includes a satellite dish and a broadband
antenna.
(3) CVBS
Composite Video Blanking and Sync, Standard single-wire video, mixing luminance
and chrominance signals together.
(4) DiSEqC
Digital Satellite Equipment Control, a protocol established by the EUTELSAT organiza-
tion www.eutelsat.com, the most popular standard are DiSEqC 1.0 for Switching solu-
tion, DiSEqC 1.2 for Dish actuator solution. Used for motorized dishes.
(5) Forward Error Correction (FEC)
A system of error control for data transmission
(6) Frequency
The number of cycles or events per one second, which is expressed in the unit of
Hertz(Hz)
(7) Intermediate Frequency (IF)
A frequency to which a carrier frequency is shifted as an intermediate step in transmis-
sion or reception
(8) Low Noise Block (LNB) Downconverter
Alownoisemicrowaveamplierandconverterwhichdownconvertsarangeoffrequen-
cies to IF range
(9) NTSC
National Television Standards Committee, a video standard established by the United
States (RCA/NBC) and adopted by numerous other countries.
(10) PAL
Phase Alternate Line, a video standard used in Europe/UK and other parts of the world
for composite colour encoding
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