Specifications

96i I/O Guide 8
S/PDIF Digital In and Out
These are unbalanced RCA jacks that accept and
output a stereo S/PDIF digital data stream.
S/PDIF supports up to 24-bit audio at up to
96 kHz.
S/PDIF input can be chosen as the input source
for channels 1–2 in the Hardware Setup dialog.
S/PDIF output is mirrored to analog outputs 1–2.
To maintain data integrity and minimize jitter,
use only 75-ohm coaxial cable.
Loop Sync In and Out
Loop Sync is a dedicated Pro Tools clock loop for
synchronizing multiple HD-series interfaces to-
gether. The Loop Sync In and Out ports are stan-
dard BNC connectors that output a 1x Loop
Sync clock signal. Loop Sync should only be
used to chain multiple HD-series peripherals to-
gether.
Loop Sync uses a word clock signal based on
sampling rates of either 44.1 kHz or 48 kHz. As
sample rates increase in the system, Loop Sync
continues to operate at a base rate of 44.1 kHz or
48 kHz (44.1 kHz for 88.2 kHz sessions, 48 kHz
for 96 kHz sessions).
EXT. CLOCK In and Out
The External Clock I/O ports are standard BNC
connectors that receive and output a word clock
signal. These ports can be used to synchronize
the 96i I/O to any device that requires (or pro-
vides) word clock.
The External Clock In and Out are configured in
the Hardware Setup dialog.
Primary Port
The Primary Port is used to connect the 96i I/O
to your HD cards, or to another HD-series audio
interface, using a DigiLink cable. When the
96i I/O is the only audio interface in the system,
the Primary Port is connected directly to the HD
Core card. When 96i I/O is used as an additional
I/O in an expanded Pro Tools|HD system, the
96i I/O Primary Port can be connected to an
HD Accel Card or HD Process Card, or to the Ex-
pansion port on a 192 I/O, 192 Digital I/O, or
96 I/O. (For more information, see Chapter 3,
“Installing and Configuring the 96i.”)
Expansion Port
The Expansion Port is used to connect an addi-
tional HD-series I/O to the 96i I/O. Using a Digi-
Link cable (one is included with each HD-series
interface), another 96i I/O can be connected to
the Expansion port for an additional 16 chan-
nels of input to your HD Core card (or other).
AC Power
This connector accepts a standard AC power ca-
ble. The 96i I/O is auto power-selecting (100V to
240V) and will automatically work with a stan-
dard modular cable to connect to AC power re-
ceptacles in any country.
Because the Loop Sync and Word Clock ports
pass crucial timing information, you must
use high-quality 75-ohm coaxial cables for
making connections. RG59 or better quality
cable is recommended