User guide

Chapter 5: Using the Driver Control Panel 27
Hardware Settings
This section of the Control Panel provides controls
for setting parameters on your interface when it is
connected to a computer using a FireWire cable
(called Hosted Mode).
Disable Host Control
This setting lets you wrest control of the Driver
Control Panel from Pro Tools. When you launch
Pro Tools, it takes control of the Driver Control
Panel's first stereo mixer. If you want to obtain full
manual control of the Driver Control Panel, choose
this option.
Clock Source
This setting determines the clock source to which
Mbox Pro is synchronized.
Internal If you are using Mbox Pro by itself (for ex-
ample, without other digital devices or an external
clock), select the
Internal option for the interface to
work properly
S/PDIF If you have connected a S/PDIF device to
your Mbox Pro and would like to use that device as
the master clock source, select the
S/PDIF option.
This will make Mbox Pro clock to the external de-
vice’s clock.
Word Clock If you are transferring material into
Pro Tools from an external digital device, or if you
utilize a common house clock signal, you will need
to synchronize Pro Tools to that digital device or
common signal. Select the
Word Clock option.
Sample Rate
This drop-down menu sets the sample rate of
Mbox Pro. Note that when using the interface with
an ASIO or CoreAudio application, the sample
rate can also be determined by your audio applica-
tion. This parameter may not be editable from
within the Mbox Pro Control Panel if your audio
application is running. In this case, any changes to
the sample rate must be made through the audio
application itself. If the application does not pro-
vide a way to set the sample rate, quit the applica-
tion, then change the sample rate through the
Mbox Pro Control Panel.
When the sample rate is locked to an external dig-
ital clock source, the Mbox Pro LED is solid blue.
When the sample rate is set and there is no digital
clock source detected (or cannot lock to it for some
reason), the LED will blink. (A message appears at
the bottom of the Hardware Settings section stating
that: “External clock not detected, Audio Stream-
ing is Disabled.”).
If you want to use the Low Latency Monitor-
ing option in Pro Tools, this option must not
be checked.