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12
en | Notices
4.3
Fault event - Temperature too high
If the amplifier detects temperature higher than +90 °C, the output level is attenuated by -3 dB
in order to counteract this. The -3 dB attenuation is removed after the fault is acknowledged
and reset. Before the fault can be cleared the temperature needs to drop below +80 °C.
4.4
Load measurement
The amplifier loudspeaker load measurement is part of the configuration (Diagnose > Amplifier
loads). It is an essential step in the system configuration to do a load measurement to check
whether the amplifier channels and the amplifier are not overloaded. Without this check, the
amplifier channel volume is automatically set to -12 dB to protect the amplifier from
unexpected overload conditions in case of an alarm situation.
4.5
Audio equalizer
The DSP audio equalizers have an internal headroom of 18 dB. Do not use audio equalizer
settings with an accumulated gain of more than 18 dB at any frequency, as this will cause
audio clipping for full scale input signals. It is good practice to do most of the frequency
response corrections by attenuation of prominent frequency bands.
4.6
Minimum message length
The minimum message length for repeating messages is 500 ms.
4.7
System controller redundancy configuration
When a second System controller is added to a system for redundancy, the second System
controller must be reset to factory default.
4.8
Network snapshot
A new network snapshot is required after a device is added, removed or replaced.
A system with redundant cabling and network supervision enabled requires a new network
snapshot after a device is added, removed or replaced.
As long as a new network snapshot is not taken, a fault in the new device will not be reported.
4.9
Multi-VLAN
In systems with VLANs in combination with the OMN-ARNIE and the OMN-ARNIS, the lifeline
between an amplifier and an PM9-MPS3 only works if both devices are part of the same
subsystem.
4.10
Multiple redundant system controllers
Each standby system controller can take up to five minutes to synchronize with the duty
controller. The synchronization is sequential, one standby system controller after the other.
When the recorded message storage of the duty system is at full capacity, the maximum time
per standby system controller is five minutes.
Do not disturb the network during the period of synchronization. Make sure the duty
controller remains operational until all standby controllers have finished synchronizing. If local
conditions allow, check the Link LEDs of all standby controllers:
–
–
2022-12 | V1.70 |
Yellow: the standby controller is not yet synchronized.
Blue: the synchronization is over and the controller is ready.
Release notes
PROMATRIX 9000
Dynacord
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