Well, one effective way to get a decent ground connection is to wrap bus wire around the probe ground right at the tip and then solder it to the groundplane of the board.? I got that idea from the late, great Bob Pease.? Nice thing is, you can leave it on the board, probe with it as necessary, and tighten it up if it gets loose.? HTH.? ? ? ? ?Jim Ford?
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-------- Original message --------
From: "Stuart Landau via groups.io" <stuartl73@...>
Date: 4/14/24 5:26 PM (GMT-08:00)
Subject: Re: [HP-Agilent-Keysight-equipment] Testing Scope Probes
The lesson learned is that probing high-impedance, high-frequency circuits with an ordinary scope probe will not result in accurate readings, and may very well disturb the circuit under test. To make it worse, establishing a low-impedance ground for the probe is very difficult, if not impossible.
Stuart K6yaz
Los Angeles, California
USA
