PRESENTATION ON DTH TECHNOLOGY ITS WORKING AND ITS APPLICATIONS

1. ACTIVE LEARNING ASSIGHMENT ON
DTH (DIRECTTO HOME)
FACULTY:
PRESENTED BY:
BHARGAV DESAI
PRUTHVIGABANI
PARTH CHOVATIYA
BATCH: A2
DEPARTMENT: CE
GANDHUNAGAR INSTITUTE OF TECHNOLOGY

2. DIRECT TO HOME
(DTH)
TECHNOLOGY
Presented By :-
Bhargav desai
Pruthvi gabani
Parth chovatiya

3. What we will cover !!!
• Introduction
• Components
• Working
 Broad casting centre
 Receiving dish (working)
 Set up box
• Benefits and Limitations
• Features
• Conclusion

4. INTRODUCTION
DTH stands for Direct-To-Home
The Direct-To-Home (DTH) service is a digital satellite
service that provides television services direct to subscriber.
The installation of a DTH Television consists of :
• A Dish Antenna (60 to 90 cm) in diameter
• A Conventional TV set
• Set top box
• Coaxial Cable between dish and set top box

5. • Programming Sources are simply the
channel that provides programming for broadcasting.
• Broadcasting Centre is the central hub of the system
which transmit the programming channel in wave form
•Satellites which the signals from broadcast station and
re- broadcast to them on the earth
•Dish picks up the signal from the satellite and passes it
on to the receivers in the viewers house
•Receiver processes the signal and passes it to the
standard television
Components For DTH

6. • First the broad casting centre send the data(programming
channel) to the Earth station then change digital data into
wave form .
• Then this wave form is transmitted by the earth station
to the geostationary satellite in the space .
• Then after the satellite transmit this wave signal back to
the earth in a wide range.
• Then a disk with LNB receives the signals and from the
satellite and again transmit it to the set up box .
• Setup box convert wave signal in to digital form again
and then it gives to the standard television
WORKING OF DTH

7. Network of DTH

8. Broadcasting Centre
Data
Programming
Source
Different
Channels
Earth station
Then transmitted
To the geostationary
satellite

9. RECEIVER DISH
 The dish at home is simply made of reflecting
material and it is a shape of concave mirror.
 At the end of the dish there is a round cylinder shape
object called LNB (low noise block down converter
which receive wave form and it converts the 12.2 to
12.7 GHz band to 950 to 1450 MHz .
 At end of an arm and faces the parabolic
reflector(dish) which focuses the signals from a
satellite into the feed horn of the LNB.

10. Low Noise Block-down Converter
(LNB)
 The central element in the feed horn is low noise block-down converter.
 Block-down convertor (so called because it converts a whole band or ‘block
of frequencies’ to a lower band) i.e. it converts the 12.2 to 12.7 GHz band to
950 to 1450 MHz
 An LNB sits on the end of an arm and faces the parabolic reflector(dish)
which focuses the signals from a satellite into the feed horn of the LNB.

13. SET UP BOX
 After the receiving of wave form by LNB of
the dish it is pass over to the Set up box
 which convert wave signal into digital signal
and pass it to the standard television set by a
cable
 This way television program can be seen on
our tv.

14. Limitations of DTH Technology
• Under unfavourable climatic conditions the service remains
unavailable.
• The service is interrupted in case if the direction of dish is
disturbed.
• Transmission gets interrupted due to sun outage.

16. Features of DTH Television
Some of the features of DTH service are as following:
• DTH offers better quality picture than Cable TV.
• DTH can reach remote areas where terrestrial transmission and cable TV
have failed to reach.
• DTH also allows for interactive TV services such as movie-on-demand,
and e-mail.
• In DTH, the payments will be made directly by the subscriber to the
satellite company offering the service.

17. Conclusion
Direct To Home Technology connects urban , rural and
remote areas of the country and provide desire information,
communication, education and entertainment at the click of
button.

18. Presentation prepared by
BHARGAV DESAI
PRUTHVI GABANI
PARTH CHOVATIYA
CLASS –CE A/A2
SEM 1
SUB - EC LAB