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different protocols on same IR reciver...does it work?

Discussion in 'Electronic Basics' started by Sudip Midya, Aug 19, 2004.

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  1. Sudip Midya

    Sudip Midya Guest

    Hi Everybody,
    I am working on RMAP protocol.I have a decoder which can decode RMAP
    and MIT protocol.
    This decoder works on RMAP protocol when the IR receiver is
    R3302,IR_REC_V_56KHz_TSOP2256VI1(not sure who is the manufacturer).
    The decoder also works on MIT protocol,when the IR receiver is
    TSOP1133(dont know who is the manufacturer).

    (1)Since the decoder works fine for both the protocols at different
    receivers, so I am sure that the decoder is working fine(else it
    wouldnt have worked at all).
    I want to make the decoder work for RMAP protocol also, when the
    receiver is TSOP1133(the second case) this scenario, it's now
    working only for MIT.

    I want to know:
    (a)Should the IR receiver work for all the protocols? If not why and
    what are the factors that prevent it from working.
    My Guess: If the carrier frequencies for the protocols do not match,
    maybe the IR receiver wont be able to decode it. Is this true? where
    can I find more information about it?

    (b)What is the carrier freq's for RMAP and MIT protocol?
    My confusion: Do the carrier freq depend on the protocol or the remote
    control itself?

    If anybody is having domain knowledge on this, pls pls respond soon.

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