Fri Mar 25 22:44:18 EDT 2011

Rigol DS1052E

The scope arrived.  I payed about $400.  Dollar/Euro is at 1.4 today
so this is really quite a deal.  Played with it a bit, and it seems to
be quite nice.

First thing I did (after FFTs on 60Hz mains) is to hook it up to the
serial port of my PIC18F2550 setup to test the trigger mode.  I
noticed some 100ns rise time spikes of about 1.3V.  What's that about?

They consistently happen at regular intervals after the normal serial
transitions (baud at 230k4).  Cable reflections?  Looks like it.
Distance of the spikes is 188us.