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HR24's Reduced Network Performance

Discussion in 'DIRECTV Connected Home' started by rgraetz, Jun 9, 2010.

  1. Jun 14, 2010 #61 of 118
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    "That post" doesn't have all the info.
    The SWM8 already had the bandstop filter, since it is a green label/stickered unit.
    As we're seeing, the location/position of the filter does/can have an affect.
    Please don't think that just removing it is the cure all to this problem.
    There is MUCH more to this.
     
  2. Jun 14, 2010 #62 of 118
    hdtvfan0001

    hdtvfan0001 Well-Known Member

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    I suspected my SWiM was green, but in now physically removing it from a mounted position, found it erroneous in making that assumption. :eek2:

    It's an October, 2009 model, but not green. No stop band in the setup here whatsoever. Its getting curiouser and curiouser...
     
  3. Jun 14, 2010 #63 of 118
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Since you're using both outputs of the SWM8, a external bandstop filter would block the DECA to the other output.
    To bring you more "inline" with other installs, changing over to using only one output and mounting the bandstop filter on the input of the first splitter, would make your setup more "common".
    I can't/shouldn't try to put numbers to how many would have to "tweak their system", but would guess it to be a small number out of all the installs, since it seems to be coming down to small changes in the length of the coax.
     
  4. Jun 14, 2010 #64 of 118
    hdtvfan0001

    hdtvfan0001 Well-Known Member

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    I'm going to do that a bit later today...and observe the results.

    Putting 2 HD DVRs and 2 HD recievers on one 4-port green splitter (6 tuners) would be easy to test here...so I'll do that.
     
  5. Jun 14, 2010 #65 of 118
    jasonki32

    jasonki32 Godfather

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    My SWM8 is over a year old, so I doubt it has the green sticker. I have tried the filter in different locations with pretty much the same numbers. I even ordered green label splitters to see if that would help. So until I figure something else out, this is the solution for the time being.
     
  6. Jun 14, 2010 #66 of 118
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    I'm fairly interested in those using this setup:
    [​IMG]

    That are having problems.
    Those using the SWiMLNB with the green sticker/label, could have phasing/cable length issues, but if the filter mounted on the splitter turns out to be the best, then the BSF could be added.

    For anyone trying to follow what all this is:
    The signal at the splitter input could look like this:
    [​IMG]

    The pigtail on the filter is very close to being the right length to have the signal become this:
    [​IMG]

    If this is the case, then the DECA performance should improve.
     

    Attached Files:

  7. Jun 14, 2010 #67 of 118
    hdtvfan0001

    hdtvfan0001 Well-Known Member

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    Here's my readings just to see the impact, using the SWM8 / Green DECA - all off one green splitter:

    ORIGINAL READINGS WITH NO BSF (for comparison):

    Dropped Session Count is 0

    [TABLE]0 NODE - 33 --- 248 252 249 252 252
    1 NODE - N/A -- 250 245 253 250 249 (HR24)
    2 NODE - 32 --- 247 253 235 251 250
    3 NODE - 29 --- 247 253 252 246 249 (H24)
    4 NODE - 32 --- 245 248 249 246 242[/TABLE]

    READINGS WITH THE BSF INSTALLED:

    Dropped Session Count is 0

    [TABLE]0 NODE - 42 --- 189 229 217 252 222
    1 NODE - N/A -- 223 210 228 232 228 (HR24)
    2 NODE - 45 --- 207 224 201 222 223
    3 NODE - 42 --- 204 229 222 182 227 (H24)
    4 NODE - 45 --- 215 228 224 225 205[/TABLE]
     
  8. Jun 14, 2010 #68 of 118
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Clearly there is a different path being used in your setup between these two tests.
    The losses show this, with an increase of:
    The HR24 to:
    Node 0 +9 dB
    Node 2 +13 dB
    Node 3 +13 dB
    Node 4 +13 dB

    While the power levels are still within working range [greater the 60 is a problem], you've reduced your bit-rate by 20+%.

    "Houston, we have a problem"
    Time to either post your whole layout here or PM it to me for some serious investigation.
     
  9. Jun 14, 2010 #69 of 118
    hdtvfan0001

    hdtvfan0001 Well-Known Member

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    The paths are identical, with the exception of adding the SBF.

    Performance (Whole Home DVR Service or MediaShare) is not a problem whatsoever without the SBF installed, so I'm unclear what exactly there is to investigate. In fact - that has been the case even prior to the green spliltters installed, although the readings are now slightly better after going "green".

    We can do via PM...but as of now - very pleased with the performance and readings.
     
  10. Jun 14, 2010 #70 of 118
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    1. they suck
    2. you'll fail the system test with at or below 215
     
  11. Jun 14, 2010 #71 of 118
    hdtvfan0001

    hdtvfan0001 Well-Known Member

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    I feel a bit guilty mentioning this....but I pass the system test on all units.

    All readings are in the 240's and 250's now. :)

    Sucks to be me. :D
     
  12. Jun 14, 2010 #72 of 118
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    But not as much [in my eyes] since you've cleared this up so others don't fall down "your suck hole". ;)
     
  13. Jun 14, 2010 #73 of 118
    Richierich

    Richierich Hall Of Fame

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    I feel a bit guilty mentioning this....but I pass the system test on all units.

    All readings are in the 240's and 250's now.

    I Guess GOD Loves Me!!! :lol:
     
  14. Jun 14, 2010 #74 of 118
    hdtvfan0001

    hdtvfan0001 Well-Known Member

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    !rolling

    That's the ultimate goal - make everyone whole. :D
     
  15. Jun 14, 2010 #75 of 118
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Aren't you on a SWiM-16? those are a whole other kettle of fish.
     
  16. Jun 14, 2010 #76 of 118
    hdtvfan0001

    hdtvfan0001 Well-Known Member

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    Yeah...he's one of THOSE (SWiM 16) people... :lol:

    Sounds like its comparing trout and bass I suppose. :D
     
  17. Jun 14, 2010 #77 of 118
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    While the SWiM-16 does have bandstop filters, It ALSO has the crossover to the other SWiM output. This means the "bounce" doesn't happen off the filter, as it goes through the crossover instead.
     
  18. Jun 14, 2010 #78 of 118
    hdtvfan0001

    hdtvfan0001 Well-Known Member

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    That is good to know, and interesting to some (like me), even if one doesn't have the SWiM16. I'll get off your lawn now. :D
     
  19. Jun 14, 2010 #79 of 118
    Davenlr

    Davenlr Geek til I die

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    VOS, here are the results of removing the BSF and using the one built into the LNB (50' coax run to the LNB from where the internal BSF had been).

    With BSF between PI and Splitter and With BSF built into LNB at dish:
    0 HR24 N/A N/A
    1 NODE- 32 33
    2 NODE- 36 35
    3 H24- 34 33
    4 NODE- 35 37
    Dropped Session Count is 0

    With BSF:
    211 232 237 246 236
    240 215 224 238 244
    239 232 211 236 232
    248 229 230 205 233
    236 238 219 238 206

    With LNB internal BSF:
    245 250 250 251 249
    253 237 242 250 243
    251 247 237 249 245
    252 250 241 237 242
    251 245 243 247 238
     
  20. Jun 14, 2010 #80 of 118
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    That sure looks like a "no brainer".
    Don't use an external bandstop filter unless you have problems with the internal, or more correctly the placement of it in your system.
     

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