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8590A Spectrum Analyzer

Discussion in 'Electronic Repair' started by Kim Würtz, Sep 20, 2006.

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  1. Kim Würtz

    Kim Würtz Guest

    Hi folks

    I have got an old 8590A Spectrum Analyzer from my company,
    unfurtunately with a defect. The amplitude levels shown on the screen
    is app. 10 dB below the actual applied input level, so the attenuator
    or input circuit apparently has a defect.

    Does any one have a service manual, diagrams etc. of this model ?

    Thanks in advance

    Kim Würtz

  2. It is probably a damaged mixer module. We had several fail in our
    8590As over several years of heavy use. There is a maximum power level
    marked by the input connector, and if you exceed it, you can damage, or
    completely destroy the mixer.

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  3. Kim Würtz

    Kim Würtz Guest

    Hi Michael

    Thanks for your quick response. Do you have any
    further information on the mixer (schematics and/or type),
    so I am able to replace it myself.

    Best regards
    Kim Würtz
  4. Kim Würtz

    Kim Würtz Guest

    Thank you very much Michael !
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