Dim efi

Bill,

It never hurts to experiment with electronics.

I can help if you desire. I am most familiar AVR. While I have developed with, Intel, Zilog, Motorola, Ti including DSPs, ARM7, Atmel AVR is my favorite for task. An ATmega16 will easily do the interface tasks, or make a timing signal simulator. There are free evaluation C compilers, and low cost methods to load code. The requirements are not difficult, a few hours, and only several lines of code. There is a $20 USB ISP programming from pololu.com that loads code, has a 2 channel slow scope, and rx, tx converter for serial communication with micro. With it you will be able to measure timings in the development process.