DOORDARSHAN KENDRA, HISAR (Duration: Six Week)

Acknowledge to:Sh. D.P. Singh,(Assistant Engineer)DDK, Hissar

Created by:-Yogesh kumar yadav09152911B.Tech ECE 7th Sem

1) Introduction

2) Studio Section

3) Earth Station

4) HPT

Doordarshan Kendra, Hisar, was established on 1st November 2002, on the auspicious Haryana day. The center was inaugurated by the honorable Mrs. Sushma Swaraj, the Information and Broadcasting minister.

Haryana’s, only ‘Earth station’ lies in this center, for the transmission of programs in whole of Haryana. From 5.00 pm to 7.30 pm every LPT of Haryana state has to tune to the frequency of Hisar and has to telecast programs from Hisar.

The basic aim of the Doordarshan Kendra, Hisar is to promote Haryanvi culture & to enhance the development process in the agro land. And this center, no doubt, is spreading education & awareness in the different parts of Haryana (especially the rural areas) through its programs. It is a land mark in the history of Haryana.

The HPT of Doordarshan Hisar consists of UHF CH=31 frequency 551.25 MHz (for DD1) and UHF CH=33 frequency 567.25MHz (for DDNEWS)

Video Signals

Audio Signals

Audio signals are processed only in the PCR (Production Control Room) by the audio mixing console, while the video signals send & receive from the base station in the equipment room. Audio mixing

console

Base Station

Patch Panels

Sync Pulse Generator

Talk Back System

Logo Generator

A/D converters

Monitoring

Section

FRAME SYNCHRONIZER

IRD

Camera control unit

Vision Mixer (Remote unit of PDS-9000)

Control the iris, shutter speed.Adjust color balances- white balance & black balance.Monitor and adjust a wide range of technical parameters.Send signals to the camera operator.To digitally amplify the signal.

The output of all studio cameras, video tape recorder, caption scanners, character generator etc are fed to the vision mixing unit. The vision –mixing panels offers a lot visual effects that require time, skill & costly auxiliary equipments.

VIDEO TAPE RECORDER

EDITINGAfter recording a raw material using video tape recorders (VTR) different

types of correction is done using edit suit like as cutting unwanted video & audio, making suitable timing for Broad casting, program name , actor name, director name etc. and also edit new audio & different types of video pattern, new images , new pictures.

There are two types of editing1) Linear editing2) Non linear editing

The VTR is the section where copies of all programs are stored.

All the programs shot in the camera are simultaneously recorded in the

VTR. Videos of prerecorded Events are

queued up in the VTR and are played back without a Break

Earth Station

Monitoring Section

Receiving & Processing Racks

Stereo Distribution Amplifier

Video Processing Amplifier

Up-Converter

Multi Channel IRD

Video Guard

L Band Patch Panel

R-X Rack

Signals From STUDIOVideo Jack Panel

Audio Jack Panel

Encoder

Audio Equalizer

8*2

Router

Color Distribution Amplifier

Line- FaderLine Amplifier

Video Equalizer

Modulator

UP-ConvertersPDA

High Power Transmitter

Monitoring Section

DD -1DD NEWS

Monitoring Section

Average Power Average Power

Attenuator

Automatic Gain Control

IRD

Patch Panels

Pattern Generator

Equalizer

AVDA

Exciter Circuit

Power Amplifiers

There are total 15 amplifiers in which 12 for video signals & 3 for audio signals.

Power Supply

Transmission Control

Cooling System