This document covers Monochrome TV Transmitter.

1. Audio and Video System
By Prof. Hitesh Dholakiya
Monochrome TV
Transmitter
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2. Basics of Monochrome TV Transmitter
Block Diagram of Monochrome TV Transmitter
Components of Monochrome TV Transmitter
Working of Monochrome TV Transmitter
Outlines of Session
Parameters of Monochrome TV Transmitter
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3. Basics of Monochrome TV Transmitter
❖ Elementary area of picture is broken into “picture element”.
❑ There are almost infinite elements in any picture, so information of picture is very complex.
❑ 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.
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4. Block Diagram of Monochrome TV transmitter
Video
Amplifier
TV Camera
Light
AM
Modulating
Amplifier
Scan &
synch.
circuit
Mic
Audio
Audio
Amplifier
FM
Modulating
Amplifier
FM Sound
Transmission
Crystal
Oscillator
RF Amplifier
Power
Amplifier
Combining
Network
Transmitting Antenna
Video Section
Audio Section
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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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