Prasar Bharti Visit 2014

An Industrial visit to Doordarshan Kendra (Prasar bharti); Raipur Chhattisgarh was organized by Department of Electronics & Telecommunication Engg., CSIT Durg on 2nd March, 2014. Total 55 students of 6th Semester & 4 faculties of the Department attended the same. The purpose of this visit was to develop interest  among the students and  to enhance their practical knowledge towards Communication Technology. This visit was arranged by Mr. Maheedhar Dubey (Sr. Assistant Professor, Electronics & Telecommunication Engg. Deptt. & I/c Industrial Visit)  & Co-ordinated by Ms. Anita Tiwari (Assistant Professor, Electronics & Telecommunication Engg. Deptt.) ,Mr. Ajay Kumar Roy (Assistant  Professor, Electronics & Telecommunication Engg. Deptt.) & Mrs. Sapna Verma (Sr. Lab Instructor, Electronics & Telecommunication Engg. Deptt.)  under the supervision of  Mr. Mangal Singh (Professor & Head, Electronics & Telecommunication Engg. Deptt.)

At Doordarshan Kendra we were received by Doordarshan team members Mr. S.K. Chakraborty (Assistant Engineer); Mr. V.K. Sharma (Assistant Engineer) & Mr. P.V.Murli (Technician). He told us that there are 2 Studio’s of Doordarshan i.e. studio A studio B (new).
                                         Then he took us to the studio where they conduct gathering programme. Mr. S.K. Chakraborty (Assistant Engineer) gave us some technical information about the position of lights i.e. backlight, front or key light & kill Light and cameras, as they are the most important part of their programme. There are total 3 ELG cameras & 1 ENG camera in that studio .Then he showed us the working of control room. At control room there are two VM i.e. Video mixing machine, which mix the video output of those ELG cameras. He demonstrated us that how the video from CCU (Central Control Unit) comes to VTR (Video Tape Recorder) then to CCVS (Color Composite Video Signal).Then he took us to Audio control room where he showed us the tally distribution and audio console, from which they control the audio signals by altering the Frequencies of sound. Mr. S.K. Chakraborty also explained about the different frequency band i.e. HF, VHF, UHF etc, Transmitter & Receiver, uplink & downlink frequency, Line of sight, analog & digital signal, resonance, microwave communication, satellite communication, waveguide, multiplexing, RF, digital encoding, quantization, noise, earth station, power supply, signal transmission, and many more such devices and principles about which we will study in current semesters as various subjects.
We took a short break thereafter, we headed towards transmission part. Transmission part explained by Mr. V. K. Sharma (Assistant Engineer). There is a transmission tower of height 150 meter ( 105 m  is concrete & 45 m of antenna).Then he  informed us how the transmission of signals takes place through satellite. He took us to the Blower Room where the surrounding air comes, filtered and retransmit to the machines for their good & efficient working. Then he took us to the earth station where all the controlling of Doordarshan kendra; Raipur is done electronically through a software named: “Evolution 5000 MEM Equipment Monitor”. From this tour we came to know about the three big Enemies Of Electronics: Dust, Moisture & Temperature, for the achievement of an electronic engineer we should cope-up these 3 enemies.
          In Doordarshan Kendra (Prasar bharti), we visited the entire studio like control room, music studio, playback studio, talks studio, Transmitter Section, recording room; etc.
          All the students highly enjoyed their entire visit. It was an amazing experience of fun & learning, which we all have memorable reminiscences.
Last but not the least; the trip was exceptionally good & knowledgeable for all of us. We look forward to make such visits in future too as technical visits gives practical and better understanding of subjects to students and update their knowledge. We thank our CSIT management & E&Tc. Deptt.  for giving such a wonderful opportunity.

Prepared By: Maheedhar Dubey,  Sr. Assistant Professor (E&Tc.Deptt.)

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