Biamp A4 - Manual (Page 24)

Audia-Manual-A4
Device I/O indicates which hardware input is associated with that software channel. If Device
failover or Channel failover is in use, an additional column to the right of the Device I/O field will
indicate whether that device or channel is Primary (Pri) or Secondary (Sec).
Fault
There are two types of Faults that the AudiaFUSION can report, categorized as Warnings or
Alarms, depending on their severity. A Warning indicates that some aspect of the system is not
performing within normal specification. Audio is still passing, but if the condition causing the
Warning is not corrected, failure may occur. An Alarm indicates that some aspect of the system
has failed and audio is no longer passing on that channel. If Channel or Device Failover has
been enabled for that channel or device, an Alarm will cause failover to occur, whereas a
Warning will not.
List of AudiaFUSION Faults:
Heat Sink (HS) Warning indicates that the heat sink on the AM600 amplifier module has
reached 92% of its maximum cooling capacity. The amplifier module will automatically
attenuate audio by 3 dB to attempt to reduce the temperature of the heat sink. If the
temperature continues to rise, the HS Warning will become an HS Alarm (see below).
The heat sink temperature must fall below 84% of maximum capacity to clear the HS
Warning and restore full output level.
Heat Sink (HS) Alarm indicates that the heat sink on the AM600 amplifier module has
reached 100% of its cooling capacity and audio on that channel will be stopped. Failover
will occur if enabled on that channel or device. If failover is not enabled, audio will only
be restored on that channel when the heat sink temperature falls below 84% of maximum
capacity.
Short Circuit (SC) Alarm indicates that there may be a short circuit on the load on that
channel. The output current of the amplifier module is continuously monitored. If the
current exceeds the maximum rated current amount, or if the load impedance monitoring
circuit calculates an effective load of 1 Ohm or less, the SC Alarm will occur and audio
will be stopped on that channel. After a brief wait, the amplifier module will attempt to
restart audio. If the condition that caused the SC Alarm persists, the amplifier module will
continue to wait and try again. It will do this indefinitely, unless failover has been enabled
on that channel or device, in which case the Short Circuit Delay attribute in the Property
Sheet of the AudiaFUSION block will determine how long the amplifier module will retry
before failover occurs.
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