Amplitude: 0-90 mA into 500 Ohm load; indication only. Actual mA will tend to be less than indicated due to electrode impedance at 1000 Ohms load (electrodes in poor condition) the maximum will be limited to 86 mA, at 1500 Ohms load the maximum will be limited to 65 mA.
Type: constant current, maximum output voltage 180 volts +10 / -30 volts.
Waveform: symmetrical, rectangular bi-phasic with zero DC current.