When connecting multiple digital hardware devices in the same rig, solid
clock sync
is vital.
If two devices' clocks don't line up and run in sync, audio artifacts will be introduced in
the form of clicks, pops and various kinds of noise (known as
jitter
). That's why AudioFuse
16Rig is equally capable of providing tight clocking to other devices, or following the clock
generated by another device.
AudioFuse 16Rig can operate on its own internal clock, or use an input clock signal from the
ADAT inputs or the Word Clock input. The clock source and sample rate are displayed at the
bottom of most screens (and shown here on the CLOCK SETTINGS page), and they can be
set on the interface itself or using the AudioFuse Control Center [p.8] software.
Parameters on this page include:
• Clock Source: This can be set to Internal (INT) Clock, ADAT Clock, or WORD Clock.
It defaults to INT and cannot be changed if no other digital device is connected
to the interface.
• Sample Rate: This can be set to 44100, 48000, 88200, 96000, 176400, or
192000 Hz. If the Clock Source is set to INT and the AudioFuse 16Rig is
connected to a host computer, then the sample rate will be set by the host and
cannot be changed within the interface itself.
◦ Sample rates above 48000 Hz will be available with limited
capabilities.
▪ At 88200 or 96000 Hz, the interface offers 16 analog
inputs, 12 analog outputs, and 8 ADAT inputs and outputs.
▪ At 176400 or 192000 Hz, the interface offers 8 analog
inputs and 10 analog outputs, with no digital inputs or
outputs.
• S/MUX Mode: When set to Normal, the interface automatically detects the
incoming ADAT clock and sets its sampling rate accordingly. This is the default
and should work well in most cases. However, if you select Force, the interface
will interpret incoming data as 88.2/96 kHz even if it "sees" 44.1/48 kHz. This is
necessary because some devices' ADAT outputs don't have the right metadata
embedded in their signals, so the sample rate can be misinterpreted. The Force
function prevents this.
• Word Clock Termination: The BNC cables that transmit word clock data are very
sensitive to changes in impedance. Usually when a connection terminates, it
wants to see a 75 ohm impedance. Under some circumstances, though, a very
high impedance is needed. This control lets you choose either 75 ohm or Hi-Z
termination.
• Word Clock Pass Thru: If your AudioFuse 16Rig is part of a larger word clock
network and is synchronized to an external clock, it can pass word clock data
through the interface to another device in a daisy chain.
Arturia - User Manual AudioFuse 16Rig - Menus and Functions 41
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