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'''SMATV''' is Single Master Antenna Television (or Satellite Master Antenna Television),<ref name="ETSI"/>
'''SMATV''' is Single Master Antenna Television (or Satellite Master Antenna Television),<ref name="ETSI"/>
The purpose of SMATV is for supplying and controlling the number and type of channels to multiple televisions.<ref name="VIS"/> Not only TV channels but FM channels as well. It provides Reception of [[Direct broadcast satellite|DBS]] TV/FM channels for hotels, motels, dormitories, hospitals and commercial properties with multiple tenants, schools. Using a master antenna system video signals, audio signals and decoder signals can also be distributed.
The purpose of SMATV is for supplying and controlling the number and type of channels to multiple televisions.<ref name="VIS"/> Not only TV channels but [[FM broadcasting|FM]] channels as well. It provides Reception of [[Direct broadcast satellite|DBS]] TV/FM channels for hotels, motels, dormitories, schools, hospitals and commercial properties with multiple tenants. Using a master antenna system video signals, audio signals and decoder signals can also be distributed.


It consists of single outdoor unit or antenna feeding to number of indoor units.<ref name="SCDR"/> The channels accessible are independent of other users. For maintaining a good Signal to noise Ratio at all the indoor units served, a larger antenna is required. Antenna with 2 m-3m diameter.
It consists of single outdoor unit or antenna feeding to number of indoor units.<ref name="SCDR"/> The channels accessible are independent of other users. For maintaining a good [[signal-to-noise ratio]] at all the indoor units served, a larger antenna is required, typically {{Convert|2|m|ft}} to {{Convert|3|m|ft}} in diameter.


[[File:Fracarro-Portenseigne-Compact-Line-QPSK-Digital-Satellite-x6-Headend-SIG9506UN-Front.jpg|thumb|A QPSK Digital Satellite Headend by Fracarro.]]
A SMATV headend is used to receive and rebroadcast [[Satellite TV]] channels throughout a property from a single satellite feed.<ref name="BaylinBerkoff1992"/>
A SMATV headend is used to receive and rebroadcast [[satellite television]] channels throughout a property from a single satellite feed.<ref name="BaylinBerkoff1992"/>


The system consist of Master Antenna, matching transformer to match the balanced antenna with unbalanced cable and amplifiers.<ref name="TEDR"/> Mostly antenna have impedance is around 300 ohm. To convert it to 75 ohm matching Transformer Balun is used. For trunk line isolation, a resistive inductive device known as splitter is used. It amplifier output is fed to splitter through coaxial trunk lines.<ref name="EED"/>
The system consists of a master antenna and a matching transformer to match the balanced antenna with unbalanced cable and amplifiers.<ref name="TEDR"/> Most antennas have an impedance of around 300&nbsp;Ω. To convert it to 75&nbsp;Ω, a matching transformer (or [[balun]]) is used. For trunk line isolation, a resistive inductive device known as a [[Power_dividers_and_directional_couplers|splitter]] is used. The amplifier output is fed to the splitter through [[coaxial]] trunk lines.<ref name="EED"/>


There are several methods of distribution that is often used in a SMATV headend including:
There are several methods of distribution that are often used in a SMATV headend. These include:
* [[IPTV]] ([[Internet Protocol]]) TV Systems<ref name="BroeckPierson2008"/>
* [[IPTV]] ([[Internet Protocol]]) TV Systems<ref name="BroeckPierson2008"/>
* Com1000 Pro:Idiom Encrypted HD Headend
* COM1000 Pro:Idiom Encrypted HD Headend
* [[L-Band]] Satellite TV Distribution<ref name="Long1999"/>
* [[L-Band]] Satellite TV Distribution<ref name="Long1999"/>
Two Main approaches for distribution of digital TV signal in SMATV installations:
There are two main approaches for distribution of digital TV signals in SMATV installations:
*Transmodulation from satellite Quaternary phase shift keying [[QPSK]] to Quadrature Amplitude Modulation [[QAM]]
* Transmodulation from satellite quaternary [[Phase-shift keying|phase shift keying]] [[QPSK]] to quadrature [[amplitude modulation]] [[Quadrature amplitude modulation|QAM]]
*Direct Distribution of [[QPSK]]<ref name="ETSI2"/>
* Direct distribution of QPSK<ref name="ETSI2"/>


In the United States the satellite carriers utilized to provide the satellite TV signal for SMATV headend systems are:
In the United States, the satellite carriers providing the satellite TV signal for SMATV headend systems are:
*[[DIRECTV]]
*[[DirecTV]]
*[[Dish Network]] Smatv
*[[Dish Network]]


==References==
==References==
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<ref name="VIS">{{cite book|title=View Source vision and security: "Satellite Master Antenna Television System(S.M.A.T.V)|url=http://www.viewsecure.co.uk/smatv.php}}</ref>
<ref name="VIS">{{cite book|title=View Source vision and security: "Satellite Master Antenna Television System(S.M.A.T.V)|url=http://www.viewsecure.co.uk/smatv.php}}</ref>


<ref name="SCDR">{{cite book|author1=Dennis Roddy|title=Satellite Communications|url=http://books.google.com/books?id=_Ef0N-ExWucC|accessdate=29 Nov 2014|isbn=978-0-07-007785-0|pages=569-}}</ref>
<ref name="SCDR">{{cite book|author1=Dennis Roddy|title=Satellite Communications|url=https://books.google.com/books?id=_Ef0N-ExWucC|accessdate=29 Nov 2014|isbn=978-0-07-007785-0|pages=569-}}</ref>


<ref name="BaylinBerkoff1992">{{cite book|author1=Frank Baylin|author2=Steve Berkoff|title=Wireless cable and SMATV|url=http://books.google.com/books?id=xHfyAAAAMAAJ|accessdate=24 May 2013|date=August 1992|publisher=Baylin Publications|isbn=978-0-917893-17-9}}</ref>
<ref name="BaylinBerkoff1992">{{cite book|author1=Frank Baylin|author2=Steve Berkoff|title=Wireless cable and SMATV|url=https://books.google.com/books?id=xHfyAAAAMAAJ|accessdate=24 May 2013|date=August 1992|publisher=Baylin Publications|isbn=978-0-917893-17-9}}</ref>


<ref name="TEDR">{{cite book|author1=RG Gupta|title=Television Engineering and Video Systems|url=https://books.google.com/books?id=P6BlcWaizHUC&pg=PT490|accessdate=29 Nov 2014|isbn=0-07-058596-2}}</ref>
<ref name="TEDR">{{cite book|author1=RG Gupta|title=Television Engineering and Video Systems|url=https://books.google.com/books?id=P6BlcWaizHUC&pg=PT490|accessdate=29 Nov 2014|isbn=0-07-058596-2}}</ref>
Line 34: Line 35:
<ref name="EED">{{cite book|author1=SK Bhattacharya|title=Electrical Engineering Drawing|url=https://books.google.com/books?id=gdsSXU4uF-MC&pg=PA239|accessdate=29 Nov 2014|isbn=81-224-0855-9}}</ref>
<ref name="EED">{{cite book|author1=SK Bhattacharya|title=Electrical Engineering Drawing|url=https://books.google.com/books?id=gdsSXU4uF-MC&pg=PA239|accessdate=29 Nov 2014|isbn=81-224-0855-9}}</ref>


<ref name="BroeckPierson2008">{{cite book|author1=Wendy Van den Broeck|author2=J. Pierson|title=Digital television in Europe|url=http://books.google.com/books?id=oc2HL71I7EgC&pg=PA241|accessdate=24 May 2013|year=2008|publisher=Asp / Vubpress / Upa|isbn=978-90-5487-541-3|pages=241–}}</ref>
<ref name="BroeckPierson2008">{{cite book|author1=Wendy Van den Broeck|author2=J. Pierson|title=Digital television in Europe|url=https://books.google.com/books?id=oc2HL71I7EgC&pg=PA241|accessdate=24 May 2013|year=2008|publisher=Asp / Vubpress / Upa|isbn=978-90-5487-541-3|pages=241–}}</ref>


<ref name="Long1999">{{cite book|author=Mark Long|title=Digital Satellite Television Handbook|url=http://books.google.com/books?id=L4yQ0iztvQEC&pg=PA165|accessdate=24 May 2013|year=1999|publisher=Newnes|isbn=978-0-7506-7171-2|pages=165–}}</ref>
<ref name="Long1999">{{cite book|author=Mark Long|title=Digital Satellite Television Handbook|url=https://books.google.com/books?id=L4yQ0iztvQEC&pg=PA165|accessdate=24 May 2013|year=1999|publisher=Newnes|isbn=978-0-7506-7171-2|pages=165–}}</ref>


<ref name="ETSI2">{{cite book|title=EN 300 473 V1.1.2: "Digital Video Broadcasting (DVB); Satellite Master Antenna Television (SMATV) distribution systems"|url=http://www.etsi.org/deliver/etsi_en/300400_300499/300473/01.01.02_60/en_300473v010102p.pdf|isbn=2-7437-1655-X}}
<ref name="ETSI2">{{cite book|title=EN 300 473 V1.1.2: "Digital Video Broadcasting (DVB); Satellite Master Antenna Television (SMATV) distribution systems"|url=http://www.etsi.org/deliver/etsi_en/300400_300499/300473/01.01.02_60/en_300473v010102p.pdf|isbn=2-7437-1655-X}}

Latest revision as of 03:28, 19 August 2023

SMATV is Single Master Antenna Television (or Satellite Master Antenna Television),[1] The purpose of SMATV is for supplying and controlling the number and type of channels to multiple televisions.[2] Not only TV channels but FM channels as well. It provides Reception of DBS TV/FM channels for hotels, motels, dormitories, schools, hospitals and commercial properties with multiple tenants. Using a master antenna system video signals, audio signals and decoder signals can also be distributed.

It consists of single outdoor unit or antenna feeding to number of indoor units.[3] The channels accessible are independent of other users. For maintaining a good signal-to-noise ratio at all the indoor units served, a larger antenna is required, typically 2 metres (6.6 ft) to 3 metres (9.8 ft) in diameter.

A QPSK Digital Satellite Headend by Fracarro.

A SMATV headend is used to receive and rebroadcast satellite television channels throughout a property from a single satellite feed.[4]

The system consists of a master antenna and a matching transformer to match the balanced antenna with unbalanced cable and amplifiers.[5] Most antennas have an impedance of around 300 Ω. To convert it to 75 Ω, a matching transformer (or balun) is used. For trunk line isolation, a resistive inductive device known as a splitter is used. The amplifier output is fed to the splitter through coaxial trunk lines.[6]

There are several methods of distribution that are often used in a SMATV headend. These include:

There are two main approaches for distribution of digital TV signals in SMATV installations:

In the United States, the satellite carriers providing the satellite TV signal for SMATV headend systems are:

References

[edit]
  1. ^ EN 300 473: "Digital Video Broadcasting (DVB); Satellite Master Antenna Television (SMATV) distribution systems" (PDF). ISBN 2-7437-1655-X.
  2. ^ View Source vision and security: "Satellite Master Antenna Television System(S.M.A.T.V).
  3. ^ Dennis Roddy. Satellite Communications. pp. 569-. ISBN 978-0-07-007785-0. Retrieved 29 Nov 2014.
  4. ^ Frank Baylin; Steve Berkoff (August 1992). Wireless cable and SMATV. Baylin Publications. ISBN 978-0-917893-17-9. Retrieved 24 May 2013.
  5. ^ RG Gupta. Television Engineering and Video Systems. ISBN 0-07-058596-2. Retrieved 29 Nov 2014.
  6. ^ SK Bhattacharya. Electrical Engineering Drawing. ISBN 81-224-0855-9. Retrieved 29 Nov 2014.
  7. ^ Wendy Van den Broeck; J. Pierson (2008). Digital television in Europe. Asp / Vubpress / Upa. pp. 241–. ISBN 978-90-5487-541-3. Retrieved 24 May 2013.
  8. ^ Mark Long (1999). Digital Satellite Television Handbook. Newnes. pp. 165–. ISBN 978-0-7506-7171-2. Retrieved 24 May 2013.
  9. ^ EN 300 473 V1.1.2: "Digital Video Broadcasting (DVB); Satellite Master Antenna Television (SMATV) distribution systems" (PDF). ISBN 2-7437-1655-X.
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