prog.book : ch2meas.fm 26 Mon Feb 15 09:24:37 1999
MEASurement Instructions
FETCh[1|2][:SCALar][:POWer:AC]:RELative? [<expected_value>[,<resolution>[,<source list>]]]
2-26 HP E4418B/E4419B Programming Guide
Error Messages
If the last measurement is not valid error -230, “Data corrupt or stale”
occurs. A measurement is valid after it has been initiated. It becomes
invalid when either a reset occurs or any measurement parameter, for
example frequency, is changed.
If the expected value and resolution parameters are not the same as the
current expected value and resolution settings on the specified window,
error -221, “Settings conflict” occurs.