I was trying to measure the bounce time of a tactile switch so that I could design a debounce circuit based on a timer. But when I look at the switch output on a scope, I don't see *any*! The output is as clean as it gets and does not show bouncing down to 100 ns/div.
I am very used to scopes and I understand what can be hard to see and what can be easy to see. The sort of bouncing that a switch normally has should be very easy to see on an old fashioned triggered scope.
This switch has no electronics inside, it is just a mechanical switch. From the feel, it is a dome type with a dome switch with a snap action. But I would still expect to see bouncing.
One of the five on the board actually seems defective in that the bouncing is to a point that it is intermittent. But I really do thing it is defective. The other four are just fine.
Anyone seen this before?