VAR4 / VAR12 / VAR20 - Operation Manual
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Page 233 of 308
Page 233 of 308
16.2.5
Configuring an Analogue Input as Ambient Noise Sensor (ANS)
16.2.5
Configuring an Analogue Input as Ambient Noise Sensor (ANS)
The purpose of an ANS system is to adjust the level of public address announcements based on a measure
of the ambient noise in the target zone. This is intended to maintain a set volume of public address audio
above the ambient noise, in order to guarantee that the announcement is intelligible, yet at a comfortable
level.
The purpose of an ANS system is to adjust the level of public address announcements based on a measure
of the ambient noise in the target zone. This is intended to maintain a set volume of public address audio
above the ambient noise, in order to guarantee that the announcement is intelligible, yet at a comfortable
level.
Section “
12.3 Ambient Noise Sensor (ANS) Configuration
” describes the configuration of the ANS
parameters on each output.
Section “
12.3 Ambient Noise Sensor (ANS) Configuration
” describes the configuration of the ANS
parameters on each output.
L
L
•
It is possible to assign a particular ANS to be associated with one, or any group of, VAR
Router outputs.
•
It is possible to assign a particular ANS to be associated with one, or any group of, VAR
Router outputs.
•
It is possible to assign multiple (up to 12) ANS sensors to a single Router output provided
that they are connected to the same Remote I/O unit (BMB01). Where this is done the
highest of the received ANS values is used.
•
It is possible to assign multiple (up to 12) ANS sensors to a single Router output provided
that they are connected to the same Remote I/O unit (BMB01). Where this is done the
highest of the received ANS values is used.
•
In the event of a fault (ANS itself or RS485 communications failure to the Remote I/O unit),
the VAR Router outputs default to maximum. If multiple sensors are configured on a single
output channel, this maximum default operation only occurs only if all configured sensors
for the output are faulty.
•
In the event of a fault (ANS itself or RS485 communications failure to the Remote I/O unit),
the VAR Router outputs default to maximum. If multiple sensors are configured on a single
output channel, this maximum default operation only occurs only if all configured sensors
for the output are faulty.
In order to configure an analogue input as an ANS sensor proceed as follows.
1. Select
Configuration
Æ
System
Æ
Router
Æ
Control
Æ
Remote
.
2. Move to scroll the Remote I/O unit list until the required unit is displayed:
[Remote I/O unit=n] Not Configured
Default value:
‘Remote I/O unit=1’
Possible I/O units: 1 to 3 for VAR4
1 to 6 for VAR12
1 to 9 for VAR20
3. Move to, and select the
Analogue
menu item.
[Analogue] Digital In Digital Out
4. Scroll the analogue input list and select the required input:
[Analogue channel=nn]
Default value:
‘Analogue channel=1’
Possible I/O units: 1 to 12
•
Make sure the selected analogue input is to be configured as Ambient Noise Sensor
(ANS). Once the ‘Ans’ menu item is selected, it will be assigned to the analogue input
and the previous configuration will be lost.
•
The currently assigned configuration is displayed in upper-case letters.
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