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ericsson minilink traffic node

  • This topic has 15 replies, 1 voice, and was last updated 13 years ago by Geek.
Viewing 15 posts - 1 through 15 (of 16 total)
  • Author
    Posts
  • #53488
    ndut
    Guest

    dear all,

    i have problem with receive level in ericsson minilink. there is a gap in receive level in each side. -40 in near end, -51 in far end. installation, softw. configuration has been checked and rechecked.

    any advise?

    #53489
    Raaz
    Guest

    It might be possible interference issue,because one of you Site getting receiving frequency from another Site,Need to verify Link Budget from Transmission Network Design Dept .

    #53490
    ndut
    Guest

    @raaz

    interference test has been rechecked, also LOS survey. but the problem still appear.

    re-pointing did twice

    #53491
    finn
    Guest

    That’s the usual problem of experts. ๐Ÿ™‚

    what is the polarization?

    please check the polarization plate behind the antenna.. triple check it according to the manual.. the oval shaped hole should point towards the slot if it is either V or H.. and should be readable without turning your head plus the band (GHz) on the plate should be in front..

    goodluck..

    #53492
    Phalanx
    Guest

    Or try to replace another outdoor unit at the far end where the reading is -51. Or check the transmit power of each sides if they are the same.

    #53493
    Phalanx
    Guest

    You may also change the polarization of the antenna. If it is currently vertical polarization, try horizontal polarization.

    #53494
    finn
    Guest

    phalanx

    it depends on the design.. follow the design. if design says vertical, don’t touch it. if it says vertical then you should. adjust the power according to the design.. if the pathprofile says it will receive like this, it will but if there is an upcoming structure then its a big drama.

    #53495
    ndut
    Guest

    the design said vertical polarization. when i tried to increase the transmit power, its reach -49.

    maybe this hop should be revised for the transmit power ๐Ÿ™‚

    thx all

    #53496
    finn
    Guest

    ndut

    what is the air distance?

    #53497
    Phalanx
    Guest

    Finn

    I agree with u that the design should be followed. I was just hasty enough to give the advice of changing polarization. I came up with this idea because I encountered this similar problem before and already tried all possible means (realignment, increase transmit power, replace outdoor unit, increase antenna height) but came out unsuccesful. It was only when the polarization was changed that we were able to obtain the desired rsl.

    #53498
    Phalanx
    Guest

    ndut

    Just be careful with increasing too much of the output power. It could shorten the life of your rf unit. Just my 2 cents worth..:)

    #53499
    finn
    Guest

    phalanx

    so… there was an interference?

    #53500
    Phalanx
    Guest

    Finn

    Interference test was also done and there was none. We even remove the rf unit to check if there is obstruction at the feeder, again there was none. It was really a bizaare experience on my part. Even our transmission planning were perplexed.

    #53501
    ndut
    Guest

    @finn

    the air distance is just 600 m, i can see far end site clearly ๐Ÿ™‚

    #53502
    mahmoudmohamed hafez
    Guest

    i need to now the consumed power for ericsson minilink

Viewing 15 posts - 1 through 15 (of 16 total)
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