>As I understand it from the test guy I deal with, this would be a failure >mode under CE (European) standards. That might not mean anything for your >particular purpose, but it never hurts to cover all the bases you can... We definitely want CE certification, but apparently it's a little subjective what exactly "failure" is. The specs say something to the effect that it can't cause a problem that requires a manual reset of the device, the device has to "self-recover". In our case, nothing fails, but the "simulated" button press does cause the host software to change modes. So it's kind of on the line. Nevertheless, I'd like to fix it. Quality being it's own reward, and like that :-) Dave