Accurate low-current measurements with a scope

RE: Accurate low-current measurements with a scope

mlease — Mon, 25 May 2015 20:01:40 GMT

Good points. Part of understanding your test equipment is knowing the conditions the specs apply for. It is fairly common even for modern-day scopes to specify a 30 minute warm-up in order to meet performance specs. That isn't so much of a problem as it is something an engineer must be aware of in order to get the most accurate measurements possible. Up-to-date calibration is also critical to getting measurements you can believe.

RE: Accurate low-current measurements with a scope

DAB — Mon, 25 May 2015 19:00:26 GMT

Good post.

As I continue to explore charge flow at the atomic level I am finding many useful ideas on how to prove both my theories and how to really understand what goes on inside electronic components.

Learning good accuracy techniques is a great skill to have.

I got into it early working in a laboratory doing cutting edge research into the effects of lasers on optics.

We had many issues that we had to define so that we could assess what we had learned from each experiment.

I still carry those skills today, some forty years later.

Understanding your test equipment is every bit as important as your design and build.

You need to verify every performance issues to rule out the possibility that you are seeing a measurement artifact verses an actual signal result.

DAB

RE: Accurate low-current measurements with a scope

clem57 — Mon, 25 May 2015 16:42:05 GMT

So true. We concentrate on speed and not on accuracy.

Clem