PRINCIPLES OFCOMMUNICATION

SYSTEM

COMPATIBILITY &

REVERSE COMPABILITY

Presented By- Manjiri R.Kharat (T.Y.I.E)

WHAT IS TELEVISION COMPATIBILITY ?

The ability of monochrome TV receiver to produce a black and white picture from the color television on signal without any modification of of the receiver circuit.

COLOUR

TV TRANSMITTER

MONOCHROME TV

RECEIVER

BLACK AND

WHITE

COMPATIBILITY

WHAT IS REVERSE COMPATIBILITY ?

The ability of a colour TV receiver to produce black and white picture from thenormal monochrome signal without any modification in the receiver curcuit.

MONOCHROME

TV

BLACK AND

WHITE

COLOUR TV

RECEIVERTRANSMITTER

REVERSE COMPABILITY

WHAT IS REQUIRED FOR

COMPLETE COMPABILITY?

REQUIRMENTS

7MHZ standard T.V channel Video bandwidth of 5.5MHZ Same line & frame synchronizing pulses Same spacing of 5.5 MHZ

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