I think the only think you can do is to capture repeated measurements in Toolcrib. Roger -----Original Message----- From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] On Behalf Of Fabrizio Levati Sent: December-09-10 7:21 AM To: argyllcms@xxxxxxxxxxxxx Subject: [argyllcms] Re: DTP94 problem Hi Graeme, I am sorry to bother you again but, tech support is asking what kind of error I get from the instrument and, since I get no error from SWs different from Argyll, I'm afraid the way to get an RMA could be really long... Do you know of any command I can use in Toolcrib to get some feedback regarding offset drift calibration? Thanks again for your patience. All the best. Fabrizio