www.qutools.com quED Manual 13
Additional Warnings
The following precautions should be thoroughly reviewed and followed to avoid the risk of any
damage or failure.
• Avoid any back-reflection into the aperture of the laser head. Permanent damage to the
laser diode can occur.
• Never connect or disconnect the cable between the control unit and the source while
the laser is switched on. These acts can lead to laser hazard for the operator and
possible permanent damage to the laser diode.
• The lifetime of the laser diode can be significantly shortened by applying the driving
currents higher than the limiting value preset in the control unit. Therefore, the laser
diode should be operated strictly below this value.
• ESD (electrostatic discharge) sensitive device! Electrostatic charges as high as several
thousand volts might readily accumulate on the human body and equipment and can
easily discharge. If this happens in the immediate vicinity of the laser diode, its
permanent damage can occur. Therefore, proper ESD precautions are strongly
recommended when handling and operating the source. These include avoiding
wearing clothes, which easily generate ESD, putting on work gloves to protect against
static electricity, maintaining environmental humidity 40–50% or more etc.
• Opening or removing the housing of the laser head might expose the user to the danger
of laser radiation and might cause the laser diode failure.
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