HD I/O Guide
24
Analog In Page
The Analog In page of the Hardware Setup dia-
log lets you set the Reference Level for the phys-
ical analog inputs on HD I/O. You can also apply
a limiter to each of the available analog inputs.
If you have only a single HD I/O AD Expansion
card installed, a single
Analog In
tab is available.
If you have two HD I/O AD Expansion cards in-
stalled, the tabs
Analog 1–8
and
Analog 9–16
are
available. The
Analog In
, and
Analog 1–8
and
An-
alog 9–16
pages provide the same controls for
the corresponding physical inputs on the HD I/O
AD card. If no HD I/O AD Expansion card is in-
stalled, these tabs are not available.
Reference Level
Select the appropriate
Reference Level
for each
of the available analog input channels. This lets
you select the analog audio input source on a
channel-by-channel basis. The
+4 dBu
option
routes audio from the ph4 dBu Balanced
DB-25 Analog Input port on the card. The
–10 dBV
option routes audio from the physical
–10 dBV Balanced DB-25 Analog Input port on
the card.
Limiter
HD I/O provides options for soft limiting on
each of the available analog input channels. Se-
lect the desired option from the corresponding
Limiter
pop-up menu:
None
Applies no limiting to the incoming ana-
log signal.
Soft Clip
Attenuates the incoming analog signal,
providing extra protection from temporary clip-
ping transients that can cause digital distortion
when they exceed the maximum input of the
unit. With Soft Clip enabled, HD I/O supports an
additional 4 dB of headroom by rounding off the
top 4 dB to the clip point. This is useful for elim-
inating stray transients.
Curv
Attenuates the incoming analog signal us-
ing a soft knee limiter circuit. This guarantees
super soft limiting without becoming hard, even
with large overloads on input.
88.2 kHz
Word Clock
(88.2 kHz)
Word Clock
(44.1 kHz)
96 kHz
Word Clock
(96 kHz)
Word Clock
(48 kHz)
176.4 kHz
Word Clock
(176.4 kHz)
Word Clock
(44.1 kHz)
192 kHz
Word Clock
(192 kHz)
Word Clock
(48 kHz)
Hardware Setup, Analog In page
Ext. Clock Output options by sample rate
Sample Rate
Available Ext.
Clock Default
Available Ext.
Clock Option
+4 dBu and –10 dBV DB-25 Analog Input ports
Summary of Contents for HD I/O
Page 1: ...HD I O Guide...
Page 22: ...HD I O Guide 18...
Page 38: ...HD I O Guide 34...
Page 42: ...HD I O Guide 38...
Page 50: ...HD I O Guide 46...
Page 51: ......
