ADN CU1 | 21
Cleaning and maintaining the conference system
Setting the volume of the conference units’ built-in
loudspeakers
You can set the volume of the conference units’ built-in loudspeakers via the jog
dial on the central unit. The standard display displays the current volume
setting H.
Cleaning and maintaining the
conference system
̈ Switch the conference system off (see page 14).
̈ Before cleaning, disconnect the ADN CU1 central unit and the ADN PS power
supplies from the mains power supply.
̈ Only use a dry and soft cloth to clean the product.
Direct Access 30 Units
20
H
CAUTION
Danger of hearing damage due to loud hissing!
When the floor channel volume is set to a high level or when several
participants speak simultaneously, feedback (loud hissing noise) can
occur. This can cause hearing damage.
̈ Reduce the floor channel volume (see below).
̈ Activate the “Feedback Suppression” function to be able to
increase the volume before feedback can occur (see page 17).
̈ Make sure that the “Audio Gain Reduction” function is activated
(see page 17). This function reduces the gain per active micro-
phone by the selected level and thus prevents feedback noise.
̈ Increase the distance between the individual conference units to
at least 50 cm.
̈ Turn the jog dial
– to the right to increase the volume or
– to the left to reduce the volume.
Use the “Feedback Suppression” function to be able to increase the floor
channel volume by up to 5 dB without feedback occurring (see page 17).
CAUTION
Liquids can damage the product!
Liquids entering the product can cause a short-circuit in the electronics or damage
the mechanics.
Solvents or cleansing agents can damage the surfaces of the product.
̈ Keep all liquids away from the product.
̈ Do not use any solvents or cleansing agents.
KA_ADN-CU1_546415_0911_SP13.book Seite 21 Donnerstag, 1. September 2011 11:00 11
