On 7 January 2016 at 08:22, drkirkby <drkirkby at gmail.com <https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts>> wrote: >/This might interest some. / >//>//>/https://event.on24.com/eventRegistration/EventLobbyServlet?target=registration.jsp&eventid=1106845 /> David, thank you for that really useful hint. I registered directly thereafter. It's of great interest for me, as I recently found out that Keysights latest DMMs, 34465A and 34470A, really lie in the DC 100V/1kV ranges, due to firmware bugs. New FW 2.11 was published just today, partly solving these issues. In this context, the OCOMP pitfall (HP3458A affected), due to relaxation effects in resistors and cables may also be of interest: http://www.eevblog.com/forum/testgear/precise-offset-compensation-ohm-measurements-and-validation-of-dmms/ regards Frank