Oscilloscope!

I use this for analog, and audio measurements. Attach an Apple USB adapter and a $40 stereo A-D converter available online, and my iPad is like a $300 OScope. For up-to-date information on feeding signals and currently supported audio interfaces, please visit http://oa.onyx3.com Feature Highlights: Real-time waveform display (60 FPS) Triggering modes: Normal, Auto, Single Set trigger level and pre-trigger time Dual channel signal generator Reference signal calibration Pause function to get a screen capture Export traces as text file for further analysis Measure signal data using cursors Use finger pinch on screen to set voltage and time base Double tap screen to enter Black Panel mode Three color themes to choose from XY mode for viewing Lissajous figures Frequency range 20Hz-22KHz Native iPhone 6 graphics