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EN109-1498751-47 IFU
[M]
Unit of Output value: µA, mA, V, W, W/cm
2
Adjusting current amplitude
To adjust the output current, touch the tab of the selected channel. Its colour will change to orange,
after which the current amplitude can be set with the central controller [7].
The current amplitude can only be adjusted when the clock has been set.
With 4 polar interferential current waveforms, the current amplitude operates on both channels
simultaneously. In this case, a balance facility is available for the classical interferential current
waveform (see paragraph
Classical interferential
for details).
The unity of the displayed current amplitude depends on the previously selected current waveform
and can be expressed in mA, µA or V.
A treatment is started by adjusting the current amplitude, unless a surge program has been selected.
To start a surge program, touch the Start/Continue button in the navigation bar.
CC/CV mode
Depending on the selected current waveform, the electrotherapy channels can be used in the
Constant Current (CC) or Constant Voltage (CV) mode. It is advised to use the CV mode with dynamic
electrode applications. In CV mode, the output current depends on the electrical contact with the
patient and can therefore vary. You can change the CC/CV setting in the parameter menu.
Current polarity
When DC currents are used, the red connection is the positive connection and the black one the
negative connection.
Manually changing the polarity during a treatment will result in a current decaying to 0, followed by a
current with the opposite polarity, rising to a value equal to 80% of the previous value.
Surge programs
Surge programs allow you to program sequential increases and decreases in current amplitude. See
Figure 30 for details. Surge programs should not be confused with protocols:
•
A single treatment step of a protocol could contain a surge program.
With independent channel operation, the surge programs run independently over both channels. They
can independently be enabled and their parameters can individually be set. When the current
channels are linked, the surge programs are also linked, which implies that their parameters have
identical values. In this case, a delay time can be set between the start of the surge on channel 1 and
channel 2.
A treatment with a Surge Program is started by first finding the desired current amplitude. During this
time, the system pauses. When the current amplitude has been established, the treatment can be
started by touching the Start/Continue button in the navigation bar.
Parameters:
See Figure 30
for details.
Ramp up time
, expressed in seconds, defines the time in a surge program during which the current is
increased from 0 to the adjusted level. See Figure 30 for details. The Ramp up time can be adjusted in
increments of 0.1 second.
Hold time
, expressed in seconds, defines the time in a surge program during which the current is kept
at the adjusted level. See Figure 30 for details. The hold time can be adjusted in increments of 1
second.
