OS: X: No signal when the digital input is chosen

Product: Audiowerk8, Audiowerk2
Version: all

Description:
In the Audio MIDI Setup (OS X) if the digital input is chosen for the Audiowerk, no signal is played through the analog output.

Explanation:
There is probably no valid digital signal present at the digital input of the Audiwerk.

An excerpt from the installation-readme:

Note:You need to have a valid digital input source if you switch to digital input. If your external clock is invalid, the playback may be either too fast or too slow or not working at all!

Solution:
Please send a valid digital singnal to the Audiowerk's digital input.

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