Engineering Report Appendix 2.

Device Stimulus Output Comparison
Test 3

Frequency Setting:	250 Hz.
Intensity Setting:	1.50 mAmps.
Skin Simulation Load:	5,000 Ohms

Neurometer® CPT/C Stimulus	Medi-Dx 7000 Stimulus

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      The output controls for each unit are set for 1.5 milliAmperes, 250 Hertz and the outputs are connected to a 5,000 Ohm resistor. The output voltage is measured with the sampling rate set to 25,000 kHz, 201 of the 1200 samples acquired are shown here. The output current is obtained by dividing the output voltage by 5,000 Ohms. The Neurometer® CPT/C output is a sine wave with a peak value of 1.51 milliAmperes. The Medi-Dx 7000 output is a square wave with a peak value of 0.605 milliAmperes.