Difference between revisions of "Glossary of terms"

Revision as of 10:26, 5 January 2017

This is a table of commonly used phrases by the ATV community.

Term / TLA	Definition	comment	Link
QPSK	Quadrature Phase Shift Keying	Commonly used digital modulation	https://en.wikipedia.org/wiki/Phase-shift_keying
Bit rate		Number of bits per second of data - used in DATV to describe the video and audio bit rate before modulation	https://en.wikipedia.org/wiki/Bit_rate
Symbol rate		Used in DATV to describe the actual modulation rate after FEC	https://en.wikipedia.org/wiki/Symbol_rate
STB	Set top box	Typical stand alone satellite receiver designed for consumer use
FTA	Free To Air	Describes a consumer set top box which is capable of receiving non encrypted signals - as opposed to a Sky STB which is not capable of receiving UK DATV signals

@@ Line 11: / Line 11: @@
 | Symbol rate || ||Used in DATV to describe the actual modulation rate after FEC || https://en.wikipedia.org/wiki/Symbol_rate
 |-
-| FEC ||Forward Error Correction ||Digital error correction applied before modulation which repeats some of the information - hence Video Bit Rate is always less than the transmitted Symbol rate||http://abelian.org/fec/pn161218/
+| STB||Set top box || Typical stand alone satellite receiver designed for consumer use||
+|-
+| FTA ||Free To Air  || Describes a consumer set top box which is capable of receiving non encrypted signals - as opposed to a Sky STB which is not capable of receiving UK DATV signals||
+|-
 |}