Current Parameters; Pulse Shape; Pulse Frequency; Pulse Width - Sanitas SEM 43 Mode D'emploi

authorized dealer. If these instructions are not heeded, the warranty becomes
null and void.
• The manufacturer assumes no liability for damage caused through improper or
wrong use.

3. Current parameters

Electrical stimulation machines operate with the following current settings,
which will alter the stimulation effect depending on the setting.

3.1 Pulse shape

This describes the time function of the excitation current
whereby monophase pulse trains are differentiated from
biphase. With monophase pulse trains, the current flows in
one direction. With biphase pulses, the excitation current
alternates its direction.
In the Digital EMS/TENS unit, there are only biphase pulse
trains, as they reduce the strain on the muscle, leading to
less muscle fatigue as well as safer application.

3.2 Pulse frequency

Frequency indicates the number of individual pulses per
second, and is indicated in Hz (Hertz). It can be calculated
by working out the inverse value of the periodic time. The
respective frequency determines which types of muscle fibre
preferably react. Slow-response fibres tend to react to lower pulse frequencies
up to 15 Hz, while fast-response fibres only respond to frequencies over approx.
35 Hz.
With pulses of approx. 45–70 Hz, there is permanent tension in the muscle com-
bined with premature muscle fatigue. Higher pulse frequencies can therefore
preferably be used for elasticity and maximum strength training.

3.3 Pulse width

Pulse width is used to indicate the duration of an individual
pulse in microseconds. Pulse width also determines the
pene tration depth of the current whereby in general, the fol-
lowing applies: a greater muscle mass requires a greater
pulse width.

3.4 Pulse intensity

Setting the degree of intensity is individually depend-
ent on the subjective feeling of each individual user and is
determined by a number of parameters such as application
site, skin circulation, skin thickness as well as quality of
electrode contact. The actual setting should be effective but should never pro-
duce any unpleasant sensations such as pain at the site of application. While
a slight tingling sensation indicates sufficient stimulation energy, any setting
which leads to pain must be avoided.
With prolonged application, readjustment may be necessary due to time adjust-
monophase pulses
ment processes at the site of application.

3.5 Cycle-controlled pulse parameter variation

time
In many cases it is necessary to cover the entirety of tissue structures at the site
biphase pulses
of application by using several pulse parameters. With the Digital EMS/TENS
unit, this is done by the existing programmes automatically making a cyclical
pulse parameter change. This also prevents individual muscle groups at the site
of application from getting tired.
With the Digital EMS/TENS unit there are useful presettings for current para-
meters. With this, you can change the impulse intensity at any time during use.
periodic
For 6 programs you can also set various parameters for stimulation yourself.
time

4. Unit description

Buttons:
1 ON/OFF button
2 E button (Enter)
3 Intensity setting buttons (
+/-
right)
4 Keylock
5 Selection button UP and DOWN
6 M button (Menu)
Pulse width
21
+/-
left,
1
2
3
4
5
6