INDUSTRIAL TRAINING PRESENTATIONON

DOORDARSHAN

TRAINING FROM:DOORDARSHAN KENDAR,NEW DELHI

PRESENTED BY :YASH VERMAECE 4TH YEAR

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

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.

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

CAMERASA 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

LIGHTINGLighting 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.

PRODUCTION CONTROL ROOM (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

EARTH STATION

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

UPCONVERTER

HIGH POWER AMPLIFIER

OUTDOOR UNIT (PDA)

EARTH STATION

TRANSMITTER

PROCESS OF TRANSMISSION

SATELLITE

DTHRECEIVER TV

UPLINKING 6 GHz

DOWNLINKING 4 GHz

OUTSIDE BROADCASTING VAN

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.

DSNG VAN

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

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