User Manual-Windows

MOTU PCI AUDIO CONSOLE
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QUICK REFERENCE
For a one-page overview of the MOTU PCI Audio
Console, see “Quick Reference: PCI Audio Console
Window” on page 15.
PCI-424 SETTINGS
The top of the MOTU PCI Audio Console window,
as shown in Figure 6-1, has several settings for the
PCI-424 card itself. These are settings that are not
dependent on the interfaces connected to the card.
Instead, they impact the function of the system as a
whole.
Figure 6-1: The PCI-424 settings at the top of the window are global
settings that apply to the system as a whole, regardless of the MOTU
PCI audio interface connected to it.
Sample rate
Choose the desired sample rate for recording and
playback. The PCI-424 system can operate at 44.1,
48, 88.2 or 96 KHz. If an HD192 interface is
connected, it can also run at 176.4 or 192 kHz. The
entire PCI-424 system will run at the sample rate
chosen in this menu. Interfaces that do not support
the system’s current sample rate are temporarily
taken off line. For example, if you run the HD192
interface(s) at 192 kHz, all other audio interfaces
are taken off line. As another example, if you run a
PCI-424 interface (2408mk3, 24I/O or HD192) at
96 kHz, any connected legacy PCI-324 interfaces
(such as a 2408, 2408mkII, 1224 or 308) will be
taken off line, with the exception of the 1296, which
supports PCI-424 operation at 88.2 or 96 kHz.
Below is a table that summarizes MOTU PCI audio
interface supported sample rates:
Make absolutely sure that all of the devices
connected digitally to all PCI-424 interfaces match
the PCI-424 system’s sample rate. Also make sure
that your Digital Timepiece, MIDI Timepiece AV
or other digital audio synchronizer matches it as
well.
☛ Mismatched sample rates cause distortion and
crackling. If you hear this sort of thing, check the
sample rate settings in your hardware and here in
the PCI Audio Console window.
Clock Source
Interface 44.1 48 88.2 96 176.4 192
HD192
✓✓✓✓✓✓
2408mk3
✓✓✓✓
24I/O
✓✓✓✓
1296
✓✓✓✓
2408mkII
✓✓
2408
✓✓
1224
✓✓
24i
✓✓
308
✓✓