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HP8753B "Phase Lock Lost" Problem

Question asked by TONYHAACK on Feb 4, 2008
Latest reply on Feb 5, 2008 by Dr_joel
When the I.F. Bandwidth is decreased from 3000Hz to 10Hz,  the phase lock lost problem occurs.  This happens occassionally, not all the time.  Sometimes it will re-lock and the trace will then restore.

Can anyone help with this problem.