Specifications

Chapter 3: Installation Overview 13
To configure audio interfaces:
1 In Pro Tools, choose Setups > Hardware.
2 From the Peripherals list, select your
192 Digital I/O. If you only have a single
192 Digital I/O in your system, it will already be
selected by default.
3 Make sure Main tab is chosen.
4 From the Digital Format radio buttons, select
the desired format for the enclosure digital I/O.
Choices include: AES/EBU, S/PDIF, and Optical
(S/PDIF). Selecting Optical (S/PDIF) resets the
Optical I/O port to two channels of S/PDIF, or
TOS-Link, supporting up to 96 kHz. When Opti-
cal (S/PDIF) is not selected, this port defaults to
eight channels of Optical (ADAT) I/O.
5 From the Clock Source pop-up menu, select
the appropriate clock source for the system. In
most cases, you will use Internal. See “Synchro-
nization Mode and Clock Source” on page 16 for
more information about non-internal clock set-
tings.
6 From the Ext. Clock Output pop-up menu, se-
lect the appropriate clock to feed to devices at-
tached to your I/O. If only HD peripherals are
attached, the 192 Digital I/O will generate stan-
dard Word Clock. Slave Clock is automatically
selected when a Legacy peripheral has been de-
clared. See “Clock Source and Loop Master” on
page 16.
7 For S/PDIF compatibility with Tascam DA30
DAT recorders, click to enable the Tascam but-
ton.
8 From the Input and Output channel pop-up
menus, select the physical ports (such as Optical
5–6, AES/EBU 1–2, and so on) that will be routed
to the Pro Tools input or output channels (Ch
1–2, 3–4, and so on). You can select default set-
tings at any time by pressing the Set To Default
button on the lower edge of the Hardware Setup
dialog.
Certain functions and paths will be greyed-out
as a result of other selections. For example, the
Optical 1–8 channels will not be available for
session rates of 88.2 kHz or higher.
A labelling convention differentiates between
the 192 Digital I/O's multiple sets of inputs and
outputs for each digital format. For example, the
stereo AES/EBU inputs and outputs that are
mounted on the 192 Digital I/O enclosure are
identified as AES/EBU [Encl]; the 16 channels of
AES/EBU I/O that come on the Digital I/O cards
are listed as AES/EBU 1–2, AES/EBU 3–4, and so
on.
When the Hardware Setup dialog is open,
the Left and Right arrows scroll through the
tabs; the Up and Down arrows scroll
through the Peripherals list.