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PNA Error Message 519

Question asked by Celestica on Nov 14, 2011
Latest reply on Nov 15, 2011 by Celestica

    I am a freshman from China, I hope everyone can help me, thanks very much !

    I have a E8357A PNA, when open the NA program, it will appeare a 519 Error Message-"Stimulus settings for your current instrument state exceeded the parameters of the original calibration, so correction has been turned off.", and "Phaselock Lost" error.

    Do you know why happened and how to fix this error?