Neville Michie wrote: > Can someone point me to where I could get the schematic? > Not that I want to pull my E1938A apart, just so I can appreciate > the technology of the device. > > cheers, Neville Michie > Here: http://www.prc68.com/I/HPE1938.shtml Lots of good info there. The schematic is in E1938pdfdocs.zip in the theory section.