Product Manual
BIPHASIC / RUSSIAN MODALITY INFORMATION
DYNATRON® 25 SERIES™ | OPERATOR’S MANUAL 38
Biphasic / Russian Default Settings
Mode Normal
Contraction / Rest Times 10 / 30
Treatment Time 10 Minutes
Ramp Up and Down Time 5 sec.
Russian Stimulation Contraction Rest Times
Default Setting Valid Range
Pulse Rate
50 Pulses per sec. 1 - 500
Pulse Duration
200 µSec 50 to 400 µSec
50 to 400 µs pulse duration @ 1-200 Hz (50% levels)
Default Setting Valid Range
Pulse Rate
50 Pulses per sec. 1-500
Pulse Duration
10 mSec .04 to 50 mSec
2500 Hz sine wave amplitude modulated at 50 Hz.
e pulse rate and duration should not be confused with the contraction/rest times in the treatment as these are dierent
parameters; the pulse occurs only during the contraction time. e diagrams below illustrate the relationship of each of these
parameters.
e pulse duration indicates the duration (in milliseconds or microseconds) of the output cycle of the pulse, and the pulse
rate is measured in number of pulse occurrences per second. Between pulses, current is at zero.
A 50 percent duty cycle or less is the usual duty cycle for Russian stimulation (the duty cycle includes one output cycle period
and one zero-current period). A 50 percent duty cycle means that the length of the pulse duration must be equal to or less than
the zero-current period. e number of pulses per second aects the allowable range of pulse durations. A greater number of
pulses per second means a shorter pulse duration is allowed. e Dynatron 25 Series will not allow you to circumvent this rule.
Russian Stimulation