This document provides an overview of Doordarshan, India's public service broadcaster. It describes the key components of Doordarshan's television production and transmission process. This includes studios with cameras, lighting, and control rooms; earth stations that transmit signals to satellites; and mobile production vehicles like OB vans and DSNG vans used for live outdoor broadcasts. The presentation aims to educate students about Doordarshan's television operations through a tour of its facilities and technical equipment.

1. INDUSTRIAL TRAININGPRESENTATION
ON
DOORDARSHAN
TRAINING FROM:
DOORDARSHAN KENDAR,
NEW DELHI
PRESENTED BY :
YASH VERMA
ECE 4TH YEAR

2. CONTENTS
 Introduction
 Studio
 Cameras
 Lighting
 PCR
 Earth Station
 Process of Transmission
 OB Van
 DSNG Van
 Conclusion

3. INTRODUCTION
 Doordarshan is a Public
Broadcast Terrestial
channel run by Prasar
Bharti.
 The head office is located
at Doordarshan Kendra,
Mandi House, New Delhi.
 Its past name was All India
Radio and it was separated
from All India Radio in
1976.

4. STUDIO
 A studio is an installation in
which television or video
production take place.
 The studio is fully digitalized
and it is mainly take place for
all major recording and live
interactive programs.
COMPONENTS OF STUDIO
 Cameras
 Lighting
 Microphones

5. CAMERAS
A Camera consist three sections :
i. A camera lens and optical
block :- To form image on the
face plate of a pick up device.
ii. A transducer or pick up
device :- To convert optical
image into a electrical signal.
iii. Electronics :- To process
output of a transducer to get
a CCVS(Colour Composite
Video Signal) signal

6. LIGHTING
Lighting is very exciting and needs
creative talent to achieve the
required effect.
Different types of light :-
 Key Light :- This is the principal
light source of illumination. It is
hard light which provides shining
on the front part of object.
 Fill Light :- It controls the lighting
contrast by filling in shadows.
 Back Light :- It separate the object
from the background.
 Background Light :- It unfold the
background interest and shapes.

7. PRODUCTIONCONTROLROOM(PCR)
In PCR post production
activities like minor editing
and management of feed
during a live program take
place.
COMPONENTS OF PCR
 Camera control unit (CCU)
 Vision mixer
 Video tape recorder (VTR)
 Audio mixer
VISION MIXER
AUDIO MIXER

8. EARTHSTATION
 Earth Station is an uplink centre from which the signals are fed
to satellite for distribution in a specified area covered by the
satellite.
 The signal is up-linked from the earth station and received by
many downlink centres in TV broad casting via PDA.
Block diagram of Earth Station
MSR
BASE BAND
SECTION
COMPRESSOR
RACK
MODULATOR
UP
CONVERTER
HIGH POWER
AMPLIFIER
OUTDOOR UNIT
(PDA)

9. EARTH STATION
TRANSMITTER
PROCESSOF TRANSMISSION
SATELLITE
DTH
RECEIVER TV
UPLINKING
6 GHz
DOWNLINKING
4 GHz

10. OUTSIDEBROADCASTINGVAN
 OB Van is used for live broadcasting like any match or any
event.
 It is also known as mobile PCR.
 It consist all the equipment that is present in the studio for
telecasting.

11. DSNGVAN
 DSNG stand for Digital
Satellite News Gathering and
it operates along with OB
Van.
 It is used as a mobile earth
station.
 Components of DSNG Van.
i. PDA(Parabolic Dish
Antenna)
ii. HPA(High Power
Amplifier)
iii. Baseband Equipments

12. CONCLUSION
 Doordarshan, the national television service of India, is
devoted to public service broadcasting.
 It is one of the largest terrestrial network in the world. In
my industrial training at Doordarshan Kendra, New Delhi, I
have gained useful knowledge which will surely be of great
help in future.
 This training gave me an opportunity to learn the practical
aspects of the knowledge of my field of interest,
electronics and communication.
Thank you