The microphone must be stuck on so that it does not pick up (even in part!) the acoustic pressure from the space behind the control panel.
A greater distance (within the available 1m cable) does not matter.
The minimum distance between the loudspeaker and microphone centres is 90 mm.A lower distance may lead to acoustic feedback.
Be sure to degrease and clean the surface carefully before! If the microphone is supplied separately with a cable on a 25 x 25 mm large board with self-adhesive foil, just glue it directly behind any hole in the panel (one hole must have the minimum diameter of 5 mm, a group of smaller holes must have the same total area). The acoustic properties of an uninstalled audio unit cannot be guaranteed.
Do not usethis type of audio unit in a position other than mounted on a sufficiently large board.
Leave no gap between the lift control panel and the audio unit surface to avoid acoustic speaker fault and acoustic speaker-microphone feedback.
Typically, the panel is ready for installation as shown in the drawing below: This audio unit is intended for mounting behind the lift control panel.
1 microphone connected directly or by cable.
1 speaker connected directly or by cable.
1 jumper slid onto the board see the cover printing.
4 terminals slid onto the board see the photo.
The cabin audio unit package contains (assembled):
There must be free space of at least 65 x 130 x 20 mm behind the panel.Ĭheck the product for completeness before installation.
The above mentioned elements have been located as required by the applicable regulations.
illuminated pictogram “Connection made”.
illuminated pictogram “Request received”.
The panel has to be equipped with the following obligatory elements:.
The panel has to be installation-ready, including speaker perforation.
No LED is illuminated upon upgrade and the audio unit is ready for use.
The red LED on the back side is permanently on.
The yellow and green LEDs flash to indicate audio unit upgrading.
The yellow and green LEDs are on (request received and connection confirmed) and the red LED is illuminated on the back side to indicate audio unit initialisation.
The yellow LED starts flashing when the call has been confirmed to indicate camera image downloading.
The green LED is on to indicate call confirmation (connection confirmed).
The yellow LED is illuminated to indicate the call setup progress (request received).
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