Alien Handling Protector; Remarks; Ground Loops & Noise; Cleaning - Ecler FAP30L Notice D'emploi

3.6. Alien handling protector

Once the FAP30L is correctly adjusted we recommend to fix the metacrilate protector
supplied with the machine. The protector is fixed on the FAP30L rack mounting holes and is intended to
protect the gain levels and limiter switches against alien handling which could yield to system
unbalancement or serious damaging if done by unqualified personnel.

4. REMARKS

4.1. Ground loops & noise
Special care must always be taken when connecting the ground of different signal sources to
the mixing desk to ensure the absence of ground-loops that could degradate the audio quality of the
system. A ground-loop is created when there exist more than one ground path between two points
within the same system. To avoid this, the FAP30L has the 'GROUND LINK' switch (26) that isolates
the electrical ground from the mechanical ground.
The FAP30L has been designed to be the less noisy possible. Notice that the noise also
depends on a proper use and installation of the unit.

4.2. Cleaning

The control panel must not be cleaned with any dissolvent, abrasive or petroleum
derivated substance else paint and silk-printing could be damaged.
Whenever cleaning should be necessary use a soft cloth slightly wet with water and
neutral liquid soap. Be careful that no liquid gets into the unit. Never use sharp or erosive objects to
scratch the control panel.
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