DigiDesign Mbox 2, Начало работы

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Chapter 4: Mbox 2 Hardware and Connections 35
2
On the front panel, press the channel Source
Select switch as appropriate:
• To select the Mic input (XLR), press that
channel’s Source switch until the Mic LED
lights. Make sure nothing is plugged in to
that channel’s Line (TRS) port.
• To select the Line (TRS) port, press that
channel’s Source switch until the Mic LED
lights.
• To select the DI port, press that channel’s
Source switch until the DI LED lights.
To activate phantom power:
■
If your microphone requires phantom power,
first make sure the microphone is connected,
then press the Phantom Power switch (labeled
48V).
Digital Audio
Mbox 2 provides digital inputs and outputs for
S/PDIF format digital audio. The two channels
of S/PDIF digital input can be used in combina-
tion with the two analog inputs (for a total of
four simultaneous input channels).
About S/PDIF
S/PDIF (Sony/Philips Digital Interchange For-
mat) I/O is available on many CD recorders,
DAT decks and other digital devices. Each
S/PDIF connection provides two channels of 24-
bit digital audio.
To connect a S/PDIF device to Mbox 2:
1
Use two 75-ohm coaxial cables with male RCA
connectors on both ends (purchased sepa-
rately).
2
Connect the device’s S/PDIF output to
Mbox 2’s S/PDIF input port, and the device’s
S/PDIF input to Mbox 2’s S/PDIF output port.
To configure Pro Tools to record from a S/PDIF
device:
1
Choose Setups > Hardware Setup.
2
Choose S/PDIF from the Clock Source selector.
On the front panel, the S/PDIF LED lights to in-
dicate this setting.
3
On the recording track, choose the appropri-
ate stereo or mono S/PDIF source from the track
Input selector.
S/PDIF Mirroring
Pro Tools LE uses S/PDIF mirroring to automati-
cally “mirror” the audio that is sent to Line Out-
puts 1 and 2 on the S/PDIF RCA outputs. This is
useful, for example, if you are monitoring a mix
using your Line Outputs, and also recording the
same source to an external S/PDIF device.
Enabling phantom power enables 48V
through
both mic inputs.
To configure Mbox 2 to record from a digital
source, choose Setups > Hardware Setup in
Pro Tools, then select S/PDIF in the Clock
Source.