On Wednesday, July 23, 2014 12:27:48 PM UTC-4, amdx wrote:
Reading through your measurements, I don't notice anything wrong.
However, in your latest picture you don't have the BNC connector on
which completes the ground to the scope.

The latest picture was just to show you a close-up of the probe tip.

I noticed in your older pictures sometimes the BNC was on and
sometimes it was removed. It should always be on, because it completes
ground the from that funny wire near tip to the scope.

But that's the point...I was demonstrating that I can get a signal from the probe tip all the way through to the scope when the BNC was OFF. But when I put the BNC on, all I get is a 0V reading.

How about trying this.

Put the BNC back on.

Now measure from that funny wire at the tip (the ground), to the case of

the scope with a DVM. It should be 0 ohms.

It is 0 ohms (yes, that is the B-D measurement). For good measure, I measured resistance from the probe tip to the scope case and it is 9Mohms.

Probably best to use the ground on the BNC for channel 2 to get a solid

ground. (No paint, not plastic, you know it is ground)

Mikek



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