Specifications

96 I/O Guide 6
Loop Sync In and Out
Loop Sync is a dedicated clock loop for synchro-
nizing multiple Pro Tools|HD-series interfaces
together. 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, depending upon the higher
rate.
The Loop Sync In and Out ports are standard
BNC connectors that output a 1x Loop Sync
clock signal. Loop Sync should only be used to
chain multiple Pro Tools|HD-series peripherals
together.
Optical (ADAT) In and Out
The Optical ports accept up to eight channels of
Optical (ADAT) input and output, or two chan-
nels (stereo) optical S/PDIF input and output.
Optical (ADAT) mode supports sample rates up
to 48 kHz. In TOS-Link mode, the 96 I/O sup-
ports two-channel Optical input and output at
sample rates up to 96 kHz.
About Lightpipe-Compatible Devices
Lightpipe is an industry standard, eight-channel
optical digital audio connection created by Ale-
sis. Lightpipe is found on many devices, includ-
ing Optical (ADAT) decks, modular digital
multitracks (MDMs), sound cards, A/D or D/A
converters, and digital consoles.
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 96 I/O to any device that requires (or pro-
vides) word clock.
The External Clock In port is configured by your
choice for Clock Source in the Hardware Setup
dialog. The External Clock Out is configured us-
ing the External Clock Out selector in the Hard-
ware Setup dialog.
AC Power
This connector accepts a standard AC power ca-
ble. The 96 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.
Primary Port
The Primary port is where the DigiLink cable
connects from your HD Core or Process card to
the 96 I/O. The Primary DigiLink port sends and
receives all 32 I/O channels to and from the HD
Core or Process card. As the 96 I/O is a 16-chan-
nel only device, channels 17–32 are passed
through to the Expansion port or the Legacy
port.
Because crucial timing data is passed
through the Loop Sync and Word Clock ports,
you should use high-quality, 75-ohm RG-59
cables for making connections.