ATEIS IDA8C - Manual (Page 126)

Ateis Studio 126
© 2012 ATEÏS
"(S_WD)Secondary Watching Dog".
11.Master/Slave Switch
A dip switch to set RU-PDC be master or slave. The difference between master and slave please
refer to item "(S_WD)Secondary Watching Dog".
4.2.2 DNM
4.2.2.1 Overview
The DNM assures the omnidirectional sound recording and preamplification of the surrounding
background noise.
The 0 dB modulation is sent through the Audio Processor in order to provide the automatic gain control
feature of the DNM component and allows the level adjustment where the DNM is implemented.
Any situation in which the volume of loudspeakers need to be adjusted automatically depending on the
background noise. (ex: station, Airport, MRT, etc.)
4.2.2.2 Installation
Install the DNM device to the position in which you want the DNM to sense background noise and adjust
loudspeaker volume automatically, and connect the DNM device with Audio Processor by RS485 or
Ethernet, besides, if the system needs to connect to a series of DNM on same RS485 port, then the
user should plug in the DNM devices one by one before connecting a series DNM to RS485 port. How to
connect is described in the "Configuration" section.
One DNM can only support one Zone(like IDA8 Zone Channel).
Generally, place the DNM in front of a loudspeaker about 1~2 meters. The distance between DNM and
Loudspeaker also depends on the power of the amplifier and loudspeaker.
If it is a high-power loudspeaker (sound is louder), then the distance should be increased, and vice versa.
The examples of installation as follows:
1. One zone connects only one loudspeaker, generally, then install the DNM in front of the
loudspeaker about 1~2 meters.