Input Configuration For Ans Monitoring - ASL INTERCOM VAR8 Operation And Maintenance Manual

VAR8 and Variants Operation, Commissioning, Fault Finding, and Maintenance Guide
18.3

Input Configuration for ANS Monitoring

Ambient noise compensation is applied to outputs, however it is possible to configure the ambient noise
compensation to be applied to any particular input routed to an output which has ANS compensation
enabled.
This setting may be used to, for instance, ensure that emergency broadcasts are always at maximum volume
level when routed to ANS controlled outputs.
To Configure Inputs for ANS Compensation:
1. For each of the local Mic/Line, DVA, and Music inputs configure the ANS compensation as required.
Menu: Configuration System Router Inputs ANS Local <input name>
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Enabled / Disabled:
'Enabled':
When ANS operation is enabled for an input then this input will be reduced according to the zone's
ANS level when the input is routed to an output which is under ANS control.
This setting is normally used for all microphone inputs.
Note that if the input is ANS 'Enabled', it must be set to ANS 'Not Tolerant'.
'Disabled':
When ANS operation is disabled for an input, then that input is always played at its configured gain,
without any ANS reduction.
This setting is generally only used for background music sources, and for emergency broadcast
inputs, if these are always required to be broadcast at maximum volume.
•
Not Tolerant / Tolerant:
ANS 'Not Tolerant':
The ANS system is not tolerant to this input, i.e. the ANS sensing is stopped while this input is
routed. This ensures that the broadcast volume is not changed by the ANS system during the
broadcast, and ensures that the broadcast does not itself produce feedback into the ANS system
affecting the volume during the broadcast.
ANS 'Tolerant':
The ANS system is tolerant to this input, and the ANS compensation continues to be calculated,
while the input is being broadcast, i.e., the input is considered as part of the ambient noise. This
setting is used for audio sources such as background music. Note however that inputs which are set
to ANS 'Tolerant' must be set at a gain level that is low enough that they do not affect the ANS
reading.
Note that if the input is ANS 'Tolerant', it must be set to ANS 'Disabled'.
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