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combined o/p of TRX is fluctuating

Viewing 6 posts - 1 through 6 (of 6 total)
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  • #68262 Reply
    Amit
    Guest

    Hi Guys,

    Urgent help required.

    In a IBS site RBS 2111v2 is running. from past 4-5 days we have observed that combined output signal of 2 RRUs are fluctuating alot(tested by directly connecting an antenna to rru o/p).

    signal is fluctuating from -12 to -30 while making calls.

    when 1 rru is kept in local mode. signal is stable, same in reverse versa.

    Uncombined output of both RRUs are OK.

    We have found no E1 slip errors.
    TCH drop is increased alot..

    Pls suggest..

    Thanks in advance

    #68263 Reply
    Amit
    Guest

    Its a single sector 4 TRX site

    amit/-

    #68264 Reply
    Bijoy
    Guest

    Hi Amit
    Replace the combiner/duplexer & check.

    Br\\
    Bijoy

    #68265 Reply
    Amit
    Guest

    we have swapped combiner/duplexers, rru, mu, Jumpers.

    Same complete hardware works fine when b sector CDD loaded and tested for 4 trx config.

    #68266 Reply
    Bijoy
    Guest

    Hi
    Pls replace the antenna & check.

    Br\\
    Bijoy

    #68267 Reply
    amit
    Guest

    Dear Bijoy,

    Thanks for your prompt reply…

    Same harwares are working fine when B sector is loaded..

    Note : all hardwares are replaced.

    problem is occuring only in A sector..

    issue occuring only when two RRUs output is combined..

    Both RRU are working fine in Uncombined Mode.

    rgds
    Amit

Viewing 6 posts - 1 through 6 (of 6 total)
Reply To: combined o/p of TRX is fluctuating
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