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  1. #1
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    Default How to connet 5 LNB with one Digsig switch?


    I have 3 KU band (Nile, horbird, Arab) and 2 C band LNB (Asia 3S, Pas10). How to connect these 5 dishes with one receiver via 4 port Digsig ?.

  2. #2
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    hehehe, you have a 4 port, and you need 5. square will fit on square, round will fit on circle. 5 will not fit on 4.

    go get yourself an 8x1 disecq switch, or two 4x1 and use 22kHz/12V controller in between.

    or use a motorized dish.
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  3. #3
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    Quote Originally Posted by mtiqbal View Post
    I have 3 KU band (Nile, horbird, Arab) and 2 C band LNB (Asia 3S, Pas10). How to connect these 5 dishes with one receiver via 4 port Digsig ?.
    There are 2 types of DISEqC:
    committed switch DISEqC 1.0 and
    uncommitted switch DISEqC 1.1

    1- The DISEqC 1.0 supports a maximum of 4 LNBs. This exists in a passive weatherproof version (gets its power from the receiver), and
    an active version multiswitch (gets its power from a mains outlet and usually not weatherproof) used for quattro LNBs and single band LNBs like NORSAT, CALAMP and SMW, which are then powered directly from the multiswitch, and where no switching within the LNB is required, this last version allows the use of multiple receiver tuning each to a different satellite/transponder.

    2- The DISEqC 1.1 supports more than 4 LNBs, but its main advantage is its possibility to cascade (daisy chaining, as someone put it) with 1.0 DISEqC switches of the two types described above. They exist in the present day as:
    2 input when cascaded with DISEqC 1.0 switches max 8 LNBs,
    4 input when cascaded with DISEqC 1.0 switches max 16 LNBs,
    8 input when cascaded with DISEqC 1.0 switchesmax 32 LNBs and
    10 input when cascaded with DISEqC 1.0 switches max 40 LNBs.
    This applies whether switching or "quattro lnbs with multiswitch" are used, and of course, using the outputs from both types simultaneously is possible.

    3- You can also cascade two levels of NC 1.1 switches.
    You just treat the first level NC as if it were a 1.0 DISEqC.
    You put the DISEqC parameter on 1.0 and select the port, but instead of using AA, AB, BA OR BB, you go further down the ladder and choose one of the numbers 1 to 16.
    The actual limit, with a Non Committed 16 port switch ( I do not know if one exists), should in theory be 16X16= 256 LNBs.

    Passive DISEqC 1.0 and 1.1 switches when used for switching LNBs do carry power from the 14v/18v/22khz from the receiver to the LNBs.
    Multiswitches use the 14v/18v/22khz from e.g receiver A, not to power the LNB, but as a signal for the multiswitch to select the correct polarity for receiver A. This imposes less strain on the switches and receiver.
    If all LNBs are quattro (renown to be virtually fail proof) no strain at all is imposed on the receiver or the cascaded switches, as they do not have to carry current but only voltage signal. This shows the advantage of using such equipment for reliability, stability and durability in the long run, especially when it is undesirable to access LNBs.

  4. #4
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    Dear friend, Thanks for the information…

    Better to remain silent and be thought a fool, than to speak and remove all doubt.

  5. #5
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    Hi, I'm using an EMP Century 8x1 diseqc2.1 for my six LNB.

    Works fine.
    Bye
    Semel in anno, licet insanire.

 

 

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