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Choppy Playback with WHDVR and error: Playback Failed

Discussion in 'DIRECTV Connected Home' started by DrummerBoy523, Nov 15, 2010.

  1. armchair

    armchair Hall Of Fame

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    I'm thinking out loud here...

    Splitter # 2 could have a BSF at input to minimize DECA traffic to its intended targets.

    Since DVRs act as both Clients and servers for MRV traffic (bi-directional), they could be placed on the two center ports of splitter # 2 (output ports) for the least amount of loss.

    I'm thinking that this may balance the circuit for DECA traffic better than the posted setup. Basically, add the BSF and swap the coaxial ports of HR24 and H24 at the splitter. Thoughts?

    Oh yeah, everytime I look at this, I wonder if ports 3 & 4 and PI-IRD are properly terminated. (?)
     
  2. DrummerBoy523

    DrummerBoy523 Godfather

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    1. What does the BSF do? Would it limit traffic going "back" to splitter #1? Of course, I just threw away all of my BSFs when I went DECA. Figures.

    2. Why would port #1 & port #4 be any different? Not following the "center ports" suggestion? What is different about port 2 & 3?


    Ports 3 & 4 are terminated - along with the PI/IRD.
     
  3. Richierich

    Richierich Hall Of Fame

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    A BSF is a Band Stop Filter needed for the HR20s and a BBC is a Broadband Converter so maybe you are confusing the two as I don't see an HR20 in the Equation.
     
  4. DrummerBoy523

    DrummerBoy523 Godfather

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    you are correct. But since I dont have any HR20s, why would previous poster suggest a band stop filter?
     
  5. Richierich

    Richierich Hall Of Fame

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    I am as Puzzled as you are but then again I would not have Set Up my System like he has done.

    I am having Zero Problems even though I had to Redo some of the Wiring after the Installer left because I along with HDTVFAN0001 thought he had wired it incorrectly, which he had and now my WHDVR is working Perfectly and Flawlessly!!!:)
     
  6. DrummerBoy523

    DrummerBoy523 Godfather

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    That setup diagram is mine.

    When I signed up for MRV, the dish was located right next to my junction box. But, it had to be moved to the other side of the house due to LOS issues. The only spot was the roof. So, the dish sits on the roof and the feed goes into the attic where it is split for the PI and the guest bedroom (future use/terminated). The 3rd output goes back through my attic and out the other side of my house and down to my original cable junction box outside where the 2nd 4 way splitter feeds the router, 2 dvrs and the h24.
     
  7. The Merg

    The Merg 1*

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    The BSF is required in front of any receiver that is on a DECA enabled network that does not have a DECA, basically your non-MRV receivers (and in the case of the HR20-100 the one cable that goes by itself to the receiver). The BSF stops the ethernet signal, which in the case of non-MRV receivers will interfere with the satellite signal when it gets to the receiver.

    By putting the BSF between Splitter 1 and Splitter 2, the poster was suggesting that by stopping the DECA signal there as opposed to letting it go all the way back to Splitter 1 that it will reduce loss of the DECA signal.

    - Merg
     
  8. DrummerBoy523

    DrummerBoy523 Godfather

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    OK, I was confused since i don't have an HR20 :)

    But, our future plans require an H24 in the guest room eventually. Not sure if this will work long term.

    I"m wondering if I need to swap out splitter #1 with just a 2 way. And then add an 8 way instead of splitter #2 which give me the ability to run a line all the way back up into the attic and down to the guest room?
     
  9. armchair

    armchair Hall Of Fame

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    Ports 2 & 3 are closer to each other and the input. For the same reason, there's lesser loss. Looking at your coaxial data, the HR24 was seeing an additional 2 dB loss, compared to the HR21 on one of the middle nodes. Being meticulous, I placed both my HR24s on the middle ports of the splitter; the PI, HR22 & BB DECA occupy outer ports of my splitter.

    The BSF will block DECA/MRV frequencies and adding the coaxial link itself has been noted to make a difference as well, which may be considered as well.

    I threw the idea out there for discussion thinking it may be better than starting from scratch.
     
  10. armchair

    armchair Hall Of Fame

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    Thanks, Merg. Well said.
     
  11. Richierich

    Richierich Hall Of Fame

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    Wow, I learn something New Everyday.
     
  12. The Merg

    The Merg 1*

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    I try. :)

    - Merg
     
  13. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Not a chance in hell. ALL splitter outputs are equal.
    2dB of loss difference in the PHY level can simply come down to the DECA itself, as these aren't calibrated to any degree.

    NEVER use a splitter larger than you need, since you're just causing more loss and then burning the RF into the terminations.

    Bandstop filter can be using full in two ways:
    1 to keep the DECA signal from "banging" the receiver with a high level signal. This is needed for receiver on the SWiM, but not having a DECA installed [R-16 say].
    2 to keep the DECA signal out of the SWiM, "for older SWiMs that don't have the green label indicating the BSF is internal.

    This can be another use for the BSF "IF" the PHY MESH rates are low due to the reflection coming back into the splitter's input. This ISN'T the case here.
     
  14. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    BUT!!!!
    If one understand what these green labeled splitter do/work, this wouldn't be the case.
    the output to output loss for the DECA path is about 13 dB, where the reverse loss path [going backwards to the input] reflecting back through the splitter in the forward direction will be higher loss than the 13 dB.
    Even if this might be an issue, it would be reflected in the PHY levels & PHY MESH rates, which was what I asked for early on and have ALWAYS shown to be well within specs.

    Wild goose chasing and red herrings is all most of this is at this point. :nono:
     
  15. The Merg

    The Merg 1*

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    Don't shoot the messenger. I was just explaining what the one poster was trying to state. You know I always defer to you for the technical mumbo-jumbo stuff. :lol:

    - Merg
     
  16. HoTat2

    HoTat2 Hall Of Fame

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    Los...
    Actually "BBC" stands for "B-Band Converter." :) A device used on legacy (non-SWM) installs to convert the satellite LNB B-Band, 250-750 MHz, up to the "A-Band" range of 1650-2150 MHz, while at the same time blocking the actual A-Band signals when necessary on H/HR 20, 21, 22, and 24 receiver models.
     
  17. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    while I will give you "B band" [which might be base band], find me anywhere "A band" is listed as 1650-2150 MHz.
    http://en.wikipedia.org/wiki/Radio_spectrum
     
  18. Richierich

    Richierich Hall Of Fame

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    Yes, you are correct and I knew that but typing fast and being in many threads one of which dealt with broadband stuff I just subconsciously put that in but I do have a Document explaining about the "A" Band and "B" Band stuff.

    I saw in on a Directv Installer's Video.
     
  19. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    !rolling
    Well I guess it's gospel then. :lol:
     
  20. Richierich

    Richierich Hall Of Fame

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    Well, why would Directv put out False Information to it's own Installers???
     

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