AnsweredAssumed Answered

Possible False Lock

Question asked by Smoos on Aug 29, 2009
Latest reply on Jan 19, 2015 by david003
Dear Friends,

Please kindly provide your opinions regarding the following question:

We are thinking to purchase a second-hand 8753ES VNA.
Currently we borrow a 8753ES for testing purpose before purchasing.
However, when we turn on the VNA, the screen has the message of "CAUTION: POSSIBLE FALSE LOCK"
Also during the operation, the same message appears again.

Is this a serious warning message and show this VNA has fatal problem?
How could we deal with this problem?

Thanks in Advance!