Avid Technology HD I/O - Digital Input Configuration

Chapter 4: Configuring Pro Tools | HD I/O in Pro Tools | HD Software 27
With Soft Clip enabled, HD I/O supports an addi-
tional 4 dB of headroom by rounding off the top
4 dB to the clip point. This is useful for eliminating
stray transients.
Curv Attenuates the incoming analog signal using
a soft knee limiter circuit. This guarantees super
soft limiting without becoming hard, even with
large overloads on input.
Digital Page
The Digital page of the Hardware Setup dialog lets
you set the
Input Format and Sample Rate Conver-
sion
for any Digital I/O cards installed in HD I/O.
If you have only a single Digital I/O card installed,
a single
Digital tab is available. If you have two HD
I/O Digital Expansion cards installed, the tabs
Dig-
ital 1–8
and Digital 9–16 are available. The Digital
(one Digital card), or the
Digital 1–8 and Digital
9–16
(two Digital cards) pages all provide the
same controls for the corresponding physical in-
puts on the HD I/O Digital card. If no HD I/O Dig-
ital Expansion card is installed, these tabs are not
available.
Digital Format
Select from the following digital formats for the
HD I/O Digital card. Depending on the sample
rate, different Digital Format options are available.
HD I/O Hardware Setup, Digital page
At session sample rates above 48 kHz, sample
rate conversion for the TDIF and Optical
(ADAT) inputs on the HD I/O Digital card is
automatically enabled on all eight inputs of
the selected format—unless you are using
Optical (ADAT S/MUX).
HD I/O Hardware Setup, Digital Format options at
44.1 kHz
HD I/O Hardware Setup, Digital Format options at
96 kHz
HD I/O Hardware Setup, Digital Format options at
192 kHz