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Link Balance

  • This topic has 9 replies, 1 voice, and was last updated 15 years ago by Rajiv Gujral.
Viewing 10 posts - 1 through 10 (of 10 total)
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  • #44473 Reply
    Rajiv Gujral
    Guest

    Hi All

    Please suggest me what might be the problem if our link balance is in negative for Stand Alone Sites.
    Could it be a H/w fault. And what if link balance is more than the threshold(8).

    #44474 Reply
    Hi
    Guest

    Please if anyone can let ,me knnow with the reasons when our link balannce crossed the thresholds value. And what might be the reason if uplink is better than downlink. Is there a chance for the hardware fault.

    Thanks for the help in advance

    #44475 Reply
    Grewal R
    Guest

    Possibility is that there is something wrong with the feeder cable/connectors if systen is not a full duplex.

    If system is full duplex chances are with hardware.
    Better if you write what make is it?

    R.

    #44476 Reply
    Tech Man
    Guest

    Check your TRX output power/ performance alarms for that sector. Also check the VSWR for the Tx path. Are you using TMB on your antenna path??

    #44477 Reply
    Rajiv Gujral
    Guest

    Hi Grewal & Tech Man

    Thanx for the reply. The Vendor is NORTEL. We are not using TMB on the antenna path. Mostly this problem, link balance above threshold, exists in the stand alone sites. We are using HD(or By Pass) for the stand alone sites with the configuraion of 2 by 2 by 2. Please let me know what might be the prob tht im getting -ve Link balance and other greater than 8. VSWR and OP is ok.

    Thanks & Regards

    #44478 Reply
    joe
    Guest

    where is your limitation (UL or DL) ???

    #44479 Reply
    Rajiv Gujral
    Guest

    Hi Joe

    What do u mean by limitation, whether its a threshold ur asking for or the problem.
    In couple of sites the prob is uplink and rest in downlink.

    #44480 Reply
    joe
    Guest

    Limitation in link budget (which is smaller).
    if it UL => check your diversity,LNA & BTS RX
    if it DL => check your BTS power,TMA, compiner & BTS TX.
    # VSWR doesnt impalance your budget, it degrade both side UL & DL.

    #44481 Reply
    R Grewal
    Guest

    Joe is right

    path balance=(UL PATH BALANC-DL path balance

    Acordingly you can go, with this formula.

    #44482 Reply
    Rajiv Gujral
    Guest

    Thanx Joe & Grewal

    I will look for it

    Regards

    Rajiv

Viewing 10 posts - 1 through 10 (of 10 total)
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