User`s guide

Chapter 20: Advanced Mixing 279
7 Click Inputs and then click Factory Reset
to update the input label configuration.
Enter new names for the Input I/O labels.
8 Click OK.
▲ If you set the Optical Format to S/PDIF,
Pro Tools will watch the Optical port for any
audio input on the S/PDIF RCA jacks.
Audiomedia III Systems
1 Choose Setups > Playback Engine and de-
select S/PDIF Mirroring. (When S/PDIF Mir-
roring is on, digital output at the S/PDIF
RCA jacks exactly mirrors the output of an-
alog Channels 1–2.)
2 Choose Internal from the Sync Mode pop
up menu.
3 Click OK.
4 Choose Setups > I/O Labels.
5 Under Display, click Outputs and then
click Factory Reset to update the output la-
bel configuration. Enter new names for the
Output I/O labels.
6 Click OK.
Using external clock sources
Pro Tools uses the digital input on Chan-
nels 1–2 as its clock master. To synchronize
your system to an external clock source,
connect the external source to digital in-
puts 1–2 of your system.
TDM Systems
Pro Tools can receive external clock from
Channels 1–2, using either the AES/EBU
(on the 888/24 I/O) or S/PDIF connectors
on your Audio Interface.
In an expanded TDM system, connect to
the digital input on Channels 1–2 of the
master Audio Interface. This is the Audio
Interface connected to the first MIX, d24,
or Disk I/O card in your system.
☞ Refer to the Pro Tools TDM System Installa-
tion Guide to determine correct card order and
Audio Interface connections for TDM systems.
To select an external clock source for a TDM
system:
1 Choose Setups > Hardware.
2 Set the Sync Mode to Digital.
3 Choose the Digital Format for the input.
Digi 001 Systems
Pro Tools can receive external clock from
the optical input (on the Digi 001 PCI card)
or S/PDIF input (on the Digi 001 I/O box).
To select an external clock source for a
Digi 001 system:
1 Choose Setups > Hardware.
2 Set the Sync Mode to match the type of
input.
If you choose Optical, make sure the Opti-
cal Format matches the type of optical in-
put you are sending to your Pro Tools sys-
tem.
▲ If you set the Optical Format to S/PDIF,
Pro Tools will watch the Optical port for exter-
nal clock, and ignore any clock input on the
S/PDIF RCA jacks.