Crown Com-Tech CT-200 Betriebsanweisung PDF herunterladen (Seite 11)

ASTi Crown

Power Amplifier User Guide (Ver. 1, Rev. F)

2.2. ACENet and Crown Power Amplifier Operation and Configuration

Process

Each power amplifier connected to a Telestra 4 Target forms part of the ASTi networked ACENet

audio distribution architecture, and hence behaves a little differently from a simple analog power

amplifier at start-up.

In order to utilize the network features of the amplifier it is necessary for the Target to recognize

the amplifier, and then configure the amplifier for correct operation. This process takes a short

while to complete, and the user needs to be aware of this, otherwise the lack of immediate opera-

tion may be misinterpreted as a system failure or similar.

In order to understand this, follow the quick top-level overview of the ACENet and Crown power

amplifier operation and configuration process:

• When a Target system boots up it starts a number of background processes, one of which

scans the ACENet network for Crown power amplifiers.

• If it finds an amplifier, it determines whether or not this is configured for ACENet opera-

tion. There are two possible states “configured”, or “not configured”.

• An amplifier that has been powered off will report as “not configured”, while an amplifier

that has been configured and left powered on (irrespective of the state of the Target) will

retain the original configuration.

• The time taken to perform the configuration will be a function of the number of amplifiers

and the number of channels, and will take upward of 90 seconds to complete.

• During the configuration period the amplifier(s) will appear inoperative, and will not pro-

duce sound.

• The system will monitor the state of all amplifiers ‘registered’ with a Target during run

time. However it should be noted that the process performing this monitoring is scheduled

periodically (approximately once every 60 seconds) and therefore, if an amplifier is pow-

ered off (perhaps to perform some maintenance function), it is necessary to ensure the

amplifier remains powered off for at least 60 seconds, such that on power-up the configura

tion process can re-discover the amplifier and initiate the correct configuration commands.

• The system will perform a configuration check of all connected power amplifiers every 24

hours, and any misconfiguration will be corrected as part of the runtime check.*

• In any given ACENet configuration only one Telestra Target can use Crown amplifiers.

Additional Telestra Targets can exist on the network but must be using ACU2s or ACE-

RIUs only.

* It is worth noting that the system performs two levels of self-monitoring; every 60 seconds the

system confirms that all the amplifiers it “recognized” previously are still present, any new ampli

fiers receive a configuration download. While every 24 hours all registered amplifiers are interro-

gated for correct configuration, and any errors are automatically corrected.

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Crown Com-Tech CT-200 Betriebsanweisung Seite 11