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• Sure, On an older iPhone (not 3G) 1) Setup SignalScope for audio device = Audio input, (Play Through is off) 2) Tap home button to goto iPhone home 3) Plug in headset (normal w/ no mic) 4) Tap SignalScope to start Application 5) Application comes up with "nan" as tick values on the time scale. Also, on "Input Channels" I…

  in Use of SignalScope as a quick and dirty general purpose scope Comment by kevlar July 2008