Integrated Receiver Decoder (IRD)

IRD: IRD stand for Integrated Receiver Decoder. This is ultimately a signal receiver. The operational  sequence of IRD is reverse than that of the earth station. The received RF signal by LNB (low noise  blocker) is converted to low band frequency that is operational for IRD.The IRD process this low  band frequency then demodulate it and then decode it according to the encoding system (while  transmitted). And thus the desired base-band signal is recovered.


Figure: Down link System of a TV Channel


A professional IRD commonly used in satellite TV channel is Proview 7000 of Harmonic brand.


 Figure: Harmonic IRD Proview 7000

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