Monochrome TV Transmitter

This document covers Monochrome TV Transmitter.

1. g Audio and Video System @

Monochrome TV
Transmitter

By Prof. Hitesh Dholakiya

2. Outlines of Session

Basics of Monochrome TV Transmitter

Block Diagram of Monochrome TV Transmitter

Components of Monochrome TV Transmitter
Working of Monochrome TV Transmitter

Parameters of Monochrome TV Transmitter

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3. Basics of Monochrome TV Transmitter

« Elementary area of picture is broken into “picture element”.
Q There are almost infinite elements in any picture, so information of picture is very complex.

Q Each elements has different level of brightness.
<* Information is given as a function of two variables, space and time.
“ Ideally, there is infinite elements of information in optical domain.
“ Practically, Conversion of optical elements into electrical form is done, and its
transmission is carried out element by element.
% Scanning of elements is done at a very fast rate and this process is repeated a
large number of times per second to create an illusion of simultaneous pick up

and transmission of picture details.

4. Block Diagram of Monochrome TV transmitter

Crystal

RF Amplifi Power
Oscillator all ‚Amplifier
Video Section Transmitting Antenna
Scan &
synch.
ircuit
= Combining
Light

Network

Video Aa

eo Modulating
4 Amplifier Amplifier
TV Camera Audio Section
Audio
—

— Audio en FM Sound
== Amplifier Abies Transmission

5. Parameters of Monochrome TV Transmitter

* It has a video information, in between black and white with
the shades of gray.

« It transmits on channels in the VHF and UHF.

Picture and sound signals are modulated on RF carrier to

reduce antenna size.

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