Multichannel Systems STG1000 Manual - Manual (Page 78)

Stimulus Generator 1000 Series User Manual
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You operate the STG in current mode, and the electrode resistance of the stimulating
electrodes is too high. According to Ohm's law, the electrode resistance directly affects the
kinetics of the current output. The rise time increases with an increasing electrode resistance. If
the electrode resistance is too high for the compliance voltage, the output signal will be clipped.
• Try to stimulate in voltage mode.
• Try to use stimulating electrodes with a lower impedance.
• Check the output signals with an oscilloscope and modify the pulse protocol so that the amplitude
and timing of the pulses will match your requirements.