AnsweredAssumed Answered

'Align now, all required' error during long measurements

Question asked by marcello on Nov 10, 2011
Latest reply on Mar 5, 2015 by nicolap

I have got the N9010A and when I control it via SCPI (via USB), the following problem sometimes appears:

During long measurement runs (1point per second for 10 hours), at a certain moment the detected signal amplitude drops by 7dB and the error message 'Align now, all required' appears.
When I realign manually (going to System ->Alignments->Align now, all) the device works fine again (until the next long remote measurement).
It seems, this error only occurs if I perform measurements with wide frequency spans (500MHz). At spans below 100MHz, i can measure for days without this error appearing.

Do you have a solution for this problem?

Many Thanks