Hi! My name is Volker and I'm from Germany. I'm a radio amateur and am working with analog electronics, controllers, and that stuff. At the time I'm interested in precision voltage sources. I bought a 34401A lately. It's all fine, except it's got a fault when measuring low ohm with 2-wires: the value runs (monotonic) from 0 to 30 oder 40 Ohms at a speed of say 1 ohm per second and after a while it decides to run back... When using 4-wires-measurement everything's alright. Did anyone of you have that problem before? Thank you Volker