Download - Grace Design

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<figure - cross-feed response graph>
12  Communication Error Handling
If at any point communication is lost between the RCU and ACU, the remote will display the communication error message and begin attempting to re-establish communication. During this time, the ACU
remains in the last configured state. Once communication is restored, the remote retrieves the system
status from the ACU and normal operation resumes.
13  Computer Audio Setup
„„ ASYNCHRONOUS USB AUDIO
The asynchronous mode USB controller in the m905 represents significant improvement over any previous type of USB DAC. Previously, a USB DAC worked under standard adaptive mode USB audio, which
means the DAC’s clock would have to sync to the non-audio related computer USB buss master clock.
As you can imagine, the computer has a lot else to do, so the incoming clock signal to which the DAC’s
clock would have to sync was not ideal and would result in unwanted jitter.
With asynchronous mode USB, the m905’s USB DAC becomes the master to which the computer’s USB
buss gets synced. So the computer is now synced to a crystal-based audio clock signal and the system
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