S/D Curve (970 only)
This mode generates rectangular interrupted galvanic pulses for plotting
strength/duration curves. Output is from channel A at constant voltage only.
Pressing the S/D Curve button in the Stimulator mode list produces this
screen –
The start pulse width may be adjusted from 100ms to 1s by repeatedly
pressing the Start button and the end pulse width from 10μs to 1ms by
repeatedly pressing the ‘End’ button. This defines the range of
measurements and thus the start and end points of the S/D graph.
Sufficient time must be entered to complete the S/D test – 10 minutes
should be more than adequate. With the correct electrodes (ball muscle
testing electrode and large dispersive pad electrode) in place over the
muscle to be tested touch ‘OK’ then slowly increase the output until a
muscle contraction is detected. The screen will be showing a flashing
‘Treatment’ sign and the axes of the S/D graph will be displayed.
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