AMMRL: shifting lock display

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   Has anyone seen the following artifact on an Inova console?
I have found that the lock display on our 800 MHz system sometimes
shifts horizontally over time. The lock level and plateau stays
constant, but the amount of zero baseline before the pateau changes.
On occasion, I also see a tailing off appear at the end of the
plateau when this happens. Any idea of what exactly could be
causing this problem with the lock display?
               Jack
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Jack W. Howarth, Ph.D.                                    231 Albert Sabin Way
NMR Facility Director                              Cincinnati, Ohio 45267-0524
Dept. of Molecular Genetics                              phone: (513) 558-4420
Univ. of Cincinnati College of Medicine                    fax: (513) 558-8474

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