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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!!!