On 3/28/22 21:55, Jon Elson wrote:
On 3/28/22 17:22, Rob Jarratt via cctalk wrote:
Its 600mV, but it is more of a spike than a ripple.
That's probably not real. It looks like noise pickup from
the probe ground lead. Try disconnecting the probe tip
and see if you still get similar signals. I have seen
similar noise lots of times when measuring things with
switching power supplies. The high frequency content is
pretty unlikely to be actually there on the power rails,
with a bunch of decoupling caps all over the boards.
Jon
