Oscilloscope for DCS?

A 50mhz 'scope is more than sufficient to do the testing.  All you need is the little filter that Adrian posted some time back.

Here is a link to the post where Adrian shows how to make the filter. I made one and it works perfectly.

Adrian also posted some screenshots of his oscilloscope readings for good and bad TIU channels at the beginning of this thread.  They should give you a pretty good idea of what you want to see.

Gee, I was just drawing one for him.

GRJ, in that sketch, don't you have words input & output transposed?  FMI, If you wanted to examine the AC output without blowing the scope, how would one connect it?

I thought it was obvious.  The 'scope does not have any outputs, that's an output to the 'scope.  Similarly, the DCS channel is an output, so it's the DCS input to the filter.

FWIW, it would not damage anything by connecting it backwords, and it would even work.  Also, unless you have a very unusual 'scope, you can connect track power directly to the 'scope and it'll be just fine.