Hello. In the process of cleaning and controlling the instruments (some capacitors need to be replaced and so on) I made a dump of the ROMs of Keithley 181 nV, 220 Is and 617 electrometer. If someone need them, just ask. By the way, they have very little firmware for actual standards. Best regards, Andrea Baldoni

Andrea wrote: >I made a dump of the ROMs of Keithley 181 nV, 220 Is and 617 electrometer. >If someone need them, just ask. A great place to put these is on Didier's site: <http://www.ko4bb.com/getsimple/index.php?id=upload-instructions> Best regards, Charles