Summer

training

highlights

Doordarshan Kendra Delhi

PRESENTATION BY

SAKET RAIECE VII

SEM,SEC B1003031097

IPEC,GZB,UP

About......• Birth on 5th Sept 1959 on as a part of All India Radio New Delhi.

• Govt. of India constituted Doordarshan as public T V Broadcaster in 1976.

• Actual development happened during Delhi Asian Games in 1982.

• One of the largest broadcasting organization in the world .

• Doordarshan operates with 35 channels classified as:

07 All India Channels,

11 Regional Language Satellite Channels,

15 State Network & International Channels,

01 HDTV Channel,

01 DD India Channel.

Schedule followed……On 10 th JUN’13 , Training program was briefed by Sh. R. N. Rai (Mentor Er.)

Dates Visiting Spots Guide Engineers

14 Jun T V Studio Sh. Vinod Gupta16 Jun Production Control Room Sh. S. P. S. Gulati18 Jun Master Control Room Sh. S. K. Dixit21 Jun Transmission Control Room Sh. P. K. Malhotra23 Jun Transmitting Earth Station Sh. P. Arun Kumar25 Jun Receiving Earth Station Sh. P. Arun Kumar28 Jun Satellite Communication Sh. P. Arun Kumar30 Jun Outside Broadcasting Van Sh. Prashant Shingle02 Jul DSNG Van Sh. Prashant Shingle05 Jul High Power Transmitter Sh. Pradeep Mishra07 Jul DD Archives Sh. Govind Ballabh

On 09 th JUL’13, T V Broadcasting was concluded by Sh. R.K. Chauhan (DDE)

first

SegmentUnits inside the Doordarshan Bhavan

T V STUDIO

A big PRODUCTION HALL to shoot the programs,which involves three basic things: lights, cameras, action etc.

Digital Camera IDigital Camera IIDigital Camera III

Action as per program

OTHER FACILITIES

Video MonitorsEfficient Sound AbsorberProper Air Conditioning

Make Up RoomDecorating itemsSafety Measures

Supporting facilities

Production Control Room

Signals generated in the T V Studio are controlled by certain effects in PCR and

further characters are generated.

Major equipment of PCR:Video Monitors on wallVision Mixer/ SwitcherAudio Mixing ConsoleCharacter Generator

DVE Devices

Master Switching Room

MSR is called “Heart of the Studio” ;an engg co-ordination center for the selecting & routing the signal from

the source to Tx & E/S.

Main devices of MSR:Routing switcherLogo generator

Frame synchronizerSync generator

Colour stab amplifierVectro-scope

Hum suppressor

Transmission Control Room

Responsible for the continuous, punctualand seamless transmission of scheduledbroadcast programming of DD channels.

Important items of TCR:Broadcast Automation ServerVideo & Waveform monitors

Video Tape RecordersCharacter Generator

Non-Linear Editing Devices

Second

SegmentCommunication based Units of Doordarshan

Transmitting Earth Station

CH. 70 MHz IF RF

Schematic Block Diagram of Tx E/S

Encoder& MUX

ModulatorUp

convertor

LocalOscillator

High PowerAmplifier

Tx

w/g

Receiving Earth Station

RF 70 MHz IF CH.

Schematic Block Diagram of Rx E/S

Low noiseAmplifier

DownConvertor

DEMUX& Decoder

DemodulatorR

x

Local Oscillator

RG59

Satellite Communication

HPA

MIXER

L.O.

LNA

i/p f

Channel b/w Tx & Rx antenna : Transponder

BPF BPF

o/p f

2000 artificial satellites are orbiting Earth.

Satellite Communication uses Geo- stationary satellites

(35,786 km height from earth along the equitorial plane)

and operates mostlyin C- band (6/4 GHz)

& Ku-band (14/11 GHz) for TV broadcasting.

Satellite in use: INSAT 4B

Launched by ISRO in 2007,uses powerful Ku band transponders.

Orbit Type: Geosynchronous Satellite.Orbital Location: 93.5 degree East.

Footprints of INSAT 4B

Third

segmentUnits outside the Doordarshan Bhavan

Outside Broadcasting Van i.e. OB Van is a “mobile Production & Control Room ”, i.e. the combination of T V Studio & PCR.

O B Van

Video PA Audio PA VTR ACCU

DSNG Van

A “Mobile Earth Station”.

H P T PitampuraHigh Power Transmitters ( H P T) are used

for terrestrial transmission.

92% population can receive DD programs through the network of 1415 terrestrial

transmission.

H P T Pitampura is started in Delhi on 7th

Nov. 1988 by Hon’ble Sh. Rajiv Gandhi;The prime minister of India.

total height of H P T pitampura: (235mtrs)=RCC(165mtrs)+Steel(70mtrs).

Coverage area 85 km radius in Delhi NCR.

DD Archives WHAT ACTUALLY HAPPENDS IN DD ARCHIVES???

1. Take the Old tapes from library2. Cleaning of tapes as per their legacy formats

AMPEX (1967): manual cleaning

Umatic (1976): cleaned by RTI cleanerBCN (1982): cleaned by RTI cleanerBeta (1986): cleaned by RTI cleanerDVC (modern): cleaned by RTI cleaner

3. Preview operation 4. Debugging operation5. Restoration using DVC Pro 50 format:

Either in Archangel Ph-C System

Or in Puritan System

6. Restored output is fed to:Server purposeCommercial purposeTo keep in library

DD Archives is located at AKASHVANI BHAVAN , New Delhi ; is the treasure house of many

memorable performancesof the great artists, who have

contributed to India’s richmusic and dance heritage

conclusion

T V Broadcasting

T V STUDIO PCR

Tx Room

MSR

Tx E/S

DTH Service

O B VanDSNG Van

Rx cable TV

Rx E/S H P Tx

Rx dish TV

DD Archives

SAT

Feed Room

References

www.ddkdelhi.org.in

www.ddpitampura.org.in

www.prasarbharati.gov.in

www.isro.org.in

www.wikipedia.com

Namaskar!!!