Testing Splitters

Discussion in 'DIRECTV - SWMLine Discussion (private)' started by Coffey77, Apr 15, 2008.

  1. bakers12

    bakers12 ΔS > 0

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    4-WAY
    MCR - ES-104D - Power Pass (One) - 5-3000MHz - PASS
     
  2. benjaminmarle

    benjaminmarle Legend

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    GE 4-way power pass all 5-2300MHZ- PASS
     
  3. houskamp

    houskamp Active Member

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    In my current setup:
    Eagle Aspen 4way SPP #P-2150-4AP-GX works
    Eagle Aspen diplexer #d2200 works
    Terk diplexer BDS P1
    Perfect Vision 2way SPP #DV23-222 works (note had one out of 3 fail)
     
  4. smiddy

    smiddy Tain't ogre til its ogre

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    Sorry gents, I am away, but I'm using a Radio Shack and I think the specs are 40 - 2150 MHz, a 4-way. I will relook at it Thursday evening and report it. I have it after the PI, with the 4th connection uncapped (not terminated). No issues!
     
  5. Coffey77

    Coffey77 Cutting Edge: ECHELON '07

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    I may be wrong but I got the idea of the power pass is for putting a splitter on before the P.I. Let's say you have a run from the dish, then you split it to two rooms. One room has your Receiver while the other room, you plug in the P.I. because you don't have access to plug in the PI anywhere before the splitter.
     
  6. Coffey77

    Coffey77 Cutting Edge: ECHELON '07

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    Check and see if the link is the one you have if you get a chance. :)
     
  7. 66stang351

    66stang351 New Member

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    Here is one for the fail category...although it is obvious from the 1000Mhz top end. This was hidden in the ceiling of my new RV and wreaked havoc on my signal strength until I found and removed it. I actually had 3 of 4 tuners that went through it working....not well but working. The fourth tuner got nothing on 103c and significantly reduced signal on all other sats.

    4-WAY

    Dynaflex - S-14 - 5-1000MHz - FAIL
     
  8. jwd45244

    jwd45244 Hall Of Fame

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    I replaced my current 4-way splitter (Phillips, I think) with a Holland STS-4 and things are working better. The H20-600 still gets 771s but for for only a fraction of a second. The Holland splitters are "equivalent" to the NAS SWS splitters. NAS is the company that makes the SWM-8.

    So far so good.
     
  9. Canis Lupus

    Canis Lupus You make it, We break it

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    Yes - if you need to split before the PI, then the Power Passing Leg becomes important. That leg must be the leg going to the PI's input.

    If you have a splitter after the PI, it doesn't matter what your splitter is doing - passing on one leg, passing on all legs, passing on all legs but diode steered - whatever.

     
  10. bakers12

    bakers12 ΔS > 0

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    That's a case where I wouldn't want the splitter to pass power on ANY leg. Remember that receivers send out 13 or 18 volts to signal the dish. That voltage will get passed along for no good reason.

    Maybe SWM compatible receivers don't do this. I don't really know. I figure that if a voltage might be sent out, I'd rather squash it.
     
  11. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    I'm using a power passing splitter before the PI. Any voltage the receiver sends [and it does still send voltage] is well below the PI voltage [29 volts] so there is no issue.
     
  12. benjaminmarle

    benjaminmarle Legend

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  13. azarby

    azarby Hall Of Fame

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    The SWM receivers still pass power. When disecting my original PI problems, I had it disconnected completely and measured power on the output to the LNB. In my case what I thought was a one leg passing splitter was actually a 4 leg passing splitter and each leg was trying to supply power. Guess what, everything still worked without the PI, including multiple channel changes.

    Bob
     
  14. bakers12

    bakers12 ΔS > 0

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    Don't mind me. I'm a purist sometimes.
     
  15. 66stang351

    66stang351 New Member

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    GE - 22694 - Power Pass (All) - 5-2300Mhz - PASS
     
  16. Coffey77

    Coffey77 Cutting Edge: ECHELON '07

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    It's just a little surprising that they don't all need to be P.P. lines because of the receiver voltage.
     
  17. Mike Bertelson

    Mike Bertelson 6EQUJ5 WOW! Staff Member Super Moderator DBSTalk Club

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    IIRC, and I might not, the PI provides power to the SWM and the receivers do not.

    The SWM provides the power for the LNB and the receivers passively receive the full spread of TV channels within one(2 for dvr) of the 8 channels. I remember a post that listed the 8 channels. I try to find it.

    It seems that my HR21 is now acting like a cable STB because the SWM/LNB at the dish takes the current satellite signals and turns into something akin to a cable kind of scheme.

    Receivers connected to non-powerpass legs can't send power to the SWM/LNB.

    It would seem possible to have the output(non-power side) of the PI terminated and the receivers connect via non-powerpass legs of the splitters and it should still work.

    Do I have any of this right? :scratchin

    Mike
     
  18. bakers12

    bakers12 ΔS > 0

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    I think you've got it. I added my thoughts below.

     
  19. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    [first cup of coffee in hand] Sounds like it.
    The PI supplies 29 volts to the SWM.
    Each receiver sends [communicates with] the SWM over the 2.3 MHz signal.
    "channels" come over the eight SWM channels and there is a ninth SWM channel for guide data [I'm told].
     
  20. Mike Bertelson

    Mike Bertelson 6EQUJ5 WOW! Staff Member Super Moderator DBSTalk Club

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    Yes, I meant the PI.

    By "akin to" I meant something closer to how a cable STB works vs a satellite receiver but I realize it's not quite the same...as you correctly pointed out. :grin:

    Mike
     

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