I have the Pace box and remote(unfortunately!) and I have a laptop PC with Pico storage scope software and an A/D converter.HOWEVER my knowledge of IR code is minimal.Guy-I read of your IRDA experiments with great
interest but I dont know anything about deciphering
or hand encoding.Also what type of optic sensor are you using?

Ive been working on an idea which, in electronic terms is crude but would work as a "converter" for the Pace
IRDA problem.It uses a 15 Channel IR receiver with reed
relays on the output, connected to a spare Pace Remote
circuit board. The Pronto sends out conventional IR codes to the receiver and the Pace remote sends out the IRDA codes
Well I said it was crude!

A refinement on this would be a converter that plugs
into the IRDA input socket on the Pace box and would accept conventional IR code input, converting to IRDA.

But back to the point -

If IRDA codes could be simulated, even just one to start with, this would be a much better solution, and something that eveyone could use easily.