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Current Status Summary

Modified 18:16, 13 Jul 2011 by horneff | Page History

    Version as of 14:15, 30 Apr 2024

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    Hardware Status as of 13. July 2011

    Electronics:

    LBH connector on RCU 185 broken.

    All RCU modules plugged in.

    High Band Antennas:

    All tiles are working. (Keep using broken RCU 185, to have all HBAs working.)

    Low Band Antennas:

    One dipole may be oscillating.

    The LBH connector of RCU 185 is broken, see report from: 07 July .

    Some (even-numbered) dipoles show little to no power in the spectrum (like as if the LNA is not working). The problem is not always consistent: some seem to recover without active intervention, some seem to recover after pulling and re-connecting the RCU.

    Date RCUs with low power in rcumode 3
    Fri. 8.7.2011A 8 12 44 68 72 743 78 82 86   130   148 150 1522 164 178
    Mon 4.7.2011 8 12 44   72 741 78 822 86   130   148 150   164 178
    Fri 1.7.2011A 8 12 44 68 72   78   86   130   148 150   164 178
    Wed 29.6.2011A 8   44   72   78   86 92   138 148 150   164  

    Notes:
    A No attempt to recover signal by switching rcumodes done.
    1Recovered after switching to rcumode 1 and back (a number of times)
    2Showed changing power levels.
    3 At 50-50 MHz about 10-15 dB reduced at 20 MHz about 30 dB reduced.

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