Try to connect a small speaker to the pin... I usually use normal external PC-speakers with built in amplifier and just connect GND straight and a capacitor in serie with the pin for the signal wire. Then you can compare 5 5 5 5 5 5 5 5 5 5 from the PIC with the beginning of Homer Simpson's phone number 555- dialed on your normal phone.

Some signals is really hard to measure with a scope.... plan B which I also tend to use alot is to take a normal windows audio sampling program and use the PC microfon to sample it. Most softwares allows the wave to be shown and you can also zoom in and out... here you can try to call Homer again to get a reference.

Who will go crazy first? You or your neighbour?

Don't call Moe......


/me