neuroConn DC-Stimulator, User Manual, Page: 31 / 85

Chapter 4 - Operating Basics
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recommended to ensure user protection.
The storing occurs expediently in wall holders. If the electrodes will not be used for a longer
period of time, please separate cable and rubber electrode.
Cleaning and storing the sponges
After each use the sponges should be cleaned by careful hand wash only employing an
appropriate detergent.
In general, disinfection of the sponges beyond normal cleaning is only necessary if people
from high-risk groups (e.g. drug users) are in contact with it. In this case, the careful use of a
common disinfection detergent (mind the instructions of use) is recommended to ensure
user protection.
The storing occurs at a dry and dust-free place.
Damp sponges must not be stored in closed packages (e.g. foil bag).
If the sponges are not used for a longer period of the, please store the sponges in
physiologic salt solution ca. 5 minutes before the new measurement.
Impedance control
Before beginning stimulation, the DC- STIMULATOR will detect the impedance levels. A DC
current of 120 µ A is used for several milliseconds. If impedance is above the adjusted level,
e.g. if there is no load connected to the device or if electrodes are unsuitable, a message will
be displayed. Stimulation cannot be started in this case. Keep the electrode impedance
below the adjusted limitation. This limit can be increased if necessary (see Software
Reference Manual: Impedance limit for details).
During stimulation permanent monitoring of all parameters occurs. The results will be shown
in the last line of the display. If there is any fault condition, e.g. electrodes slipping off or
impedance increases above the adjusted limit, stimulation will be stopped automatically and
a message will be displayed. Try to keep electrode impedance below the adjusted limitation.
You can increase this limit if necessary (see Software Reference Manual: Impedance limit
for details).