22
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 and radiates electromagnetic waves includes a satellite
dish and a broadband antenna.
(3) CVBS
Composite Video Baseband Signal, Standard single-wire video, mixing lum and
chroma signals together.
(4) DiSEqC
Digital Satellite Equipment Control, a protocol established by EUTELSAT
organization www.eutelsat.com
, the most popular standard are DiSEqC 1.0 for
Switching solution, DiSEqC 1.2 for Dish actuator solution, and DiSEqC 2.0 for
Satellite Receiver solution.
(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
transmission or reception
(8) Low Noise Block (LNB) Downconverter
A low noise microwave amplifier and converter which downconverts a range of
frequencies 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 and other parts of the
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