Chapter 6: Making Studio Connections 43
If you need additional MIDI ports you can add a
compatible MIDI interface. USB MIDI interfaces
work effectively with Pro Tools systems on Win-
dows or Mac. Serial MIDI interfaces are sup-
ported on Windows systems only.
To connect MIDI devices to Mbox 2 Pro:
1 Connect the MIDI OUT of your MIDI device
or controller to the MIDI IN port on the back of
Mbox 2 Pro.
2 Connect the MIDI IN of your MIDI device or
controller to the MIDI OUT port on the back of
Mbox 2 Pro.
Word Clock
Mbox 2 Pro provides Word Clock In and Out
connectors on the back panel that let you syn-
chronize, or “clock” Pro Tools LE and
Mbox 2 Pro to industry standard Word clock.
Word clock is used to synchronize a wide range
of devices such as non-linear video systems and
other types of equipment typically found in pro-
fessional audio facilities.
With both Word clock input and output, your
Mbox 2 Pro-equipped Pro Tools LE system can
act as Word clock “slave” or “master.”
To connect Word clock to Mbox 2 Pro:
Using high-quality, 75 ohm BNC cables (not
included) connect the Mbox 2 Pro Word Clock
In and Out connectors to the appropriate ports
on the other Word clock-capable devices in your
studio.
Using Word Clock with
Pro Tools LE
Pro Tools LE with Mbox 2 Pro can act as Word
clock master, or as a slave to Word clock sup-
plied by an external device.
Pro Tools LE as Word Clock Master
Mbox 2 Pro Word clock output is always active,
letting Pro Tools supply Word clock to any con-
nected devices that support standard Word
clock.
To use Pro Tools LE as Word clock master:
1 Make sure all connections are correct between
Mbox 2 Pro and your external devices.
Only USB MIDI interfaces are compatible
with Pro Tools systems for Mac OS X. Mo-
dem-to-serial port adapters and serial MIDI
devices are not supported.
MIDI connections to Mbox 2 Pro
MIDI
In Out
Do not confuse Word clock and other forms
of “clock reference” with time code and
other forms of “positional reference.” For an
overview of synchronization terminology
and concepts, see the
Pro Tools Reference
guide.
Mbox 2 Pro does not support external sync
at 88.2 and 96 kHz sample rates.
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