Oscilloscope

The oscilloscope will give you an accurate picture of what your recording looks like. At the very least you should use this to verify that you are digitizing correctly. The output of the amplifier goes to one of the oscilloscope channels (most oscilloscopes have two channels. Set the Vertical gain and the time base appropriately: for a field potential you will probably set the vertical gain at approximately 200 mV per division. The time base should probably be set at about 5 msec per division. The divisions refer to the boxes on the display. You'll want to run the oscilloscope in the triggeed mode to capture your waveform. There are a number of ways to do this. The easiest way to explain is to attach a T-junction to the DtoA output before it goes to the stimulator. Split the output so that one cable goes to gate the stimulator and another cable goes to the external trigger input on the oscilloscope. Now whenever the stimulator is triggerd, a sweep of the oscilloscope will also be triggered. You may have to adjust the trigger level dial on the oscilloscope.