Instruction manual - Digital 6000 (v4.0)

Word clock scenarios for digital audio (AES3 and Dante™)
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Word clock scenarios for digital audio
(AES3 and Dante™)
The EM 6000 supports two clock rates: 48 kHz and 96 kHz (see „System -
> Wordclock menu item“ under „System menu item“).
You can use either the internal word clock on the EM 6000 or connect an
external word clock (see „Connecting the word clock“).
An external word clock can also be forwarded to a downstream device via
the word clock output. This feature allows you to cascade up to 16 EM 6000
devices.
Note that only the word clock on the word clock input can be forward-
ed via the word clock output. The internal word clock is not forwarded
via the word clock output.
Word clock with analog audio
A clock generator is always required. For purely analog audio, the internal
word clock has to be used for clocking because a digital clock generator is
not available. If an external word clock is connected but no usable signal is
detected, the EM 6000 automatically switches to the internal word clock.
For the analog audio outputs on the EM 6000, the clock rate is unimportant
because it always operates at the better clock rate of 96 kHz. The selection
of the clock rate affects only the clocking for the AES3 stream and the Dan-
te™ interface (see below).
Word clock with digital audio
If multiple devices with digital audio signals are connected in a production
environment, their clock signals must be synchronized via a word clock,
otherwise audio errors occur. The word clock of one device becomes the
master. All of the other devices become slaves and synchronize with the
master.
AES3
The selection of the internal clock rate determines the clocking for the
AES3 stream. In an AES3 application, the device connected to the EM 6000
via the digital audio output can be synchronized via the audio stream.
If there are multiple AES3 connections, the EM 6000 must be synchronized
with all of the other devices externally via the word clock input and output.
Dante™
The Audinate Brooklyn II Dante™ interface installed in the EM 6000
should be understood as a standalone digital audio device with its own
word clock and also has to be clocked either internally or externally.
You require the Dante Controller software from Audinate for these
settings. You can access it using the link below:
Audinate Dante Controller