MOTU 896mk3, Руководство пользователя

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A B O U T T H E 8 9 6 M K 3
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phantom power and 20 dB pad are supplied by
separate front panel switches for each input. In
addition, each input has its own trim knob, which
provides over 60 dB of gain.
Analog input overload protection
All eight mic inputs are equipped with V-Limit™, a
hardware limiter that helps prevent digital clipping
from overloaded input signals. With V-Limit
enabled, signals can go above zero dB (with
limiting applied) to as high as +12 dB above zero
with no distortion due to digital clipping.
Additional or alternative protection can be applied
to the mic/guitar inputs by enabling the 896mk3’s
Soft Clip feature, which engages just before
clipping occurs and helps reduce perceptible
distortion.
Main Outs
The main outs are equipped with 24-bit 192kHz
D/A converters and serve as independent outputs
for the computer or for the 896mk3’s on-board
CueMix FX mixes. The main out volume can be
controlled with the front panel volume knob.
Optical
The two optical banks provide 16 channels of
ADAT optical at 44.1 or 48 kHz, 8 channels of
S/MUX optical I/O at 96 kHz or two banks of
stereo TOSLINK at rates up to 96 kHz. The banks
operate independently, including input and output,
allowing you to mix and match any optical formats.
For example, you could receive 4 channels of
96 kHz S/MUX input on Bank A while at the same
time sending 96 kHz stereo optical S/PDIF
(“TOSLINK”) from the Bank A output.
AES/EBU with sample rate conversion
The 896mk3 rear panel provides a standard
AES/EBU digital input and output that supports
digital I/O at 44.1, 48, 88.2 and 96 kHz. In addition,
input or output can be sample-rate converted to
any of these sample rates in situations that call for a
different rate than the 896mk3’s global sample rate.
The AES/EBU jacks are disabled at the 4x sample
rates (176.4 and 192kHz).
S/PDIF
The 896mk3 rear panel provides S/PDIF input and
output in two different formats: RCA “coax” and
optical “TOSLINK”. The RCA jacks are dedicated
to the S/PDIF format. The TOSLINK jacks can be
used either for either TOSLINK or ADAT optical,
as discussed earlier.
Word clock
The 896mk3 provides standard word clock that can
slave to any supported sample rate. In addition,
word clock can resolve to and generate “high” and
“low” sample rates. For example, if the 896mk3
global sample rate is set to 96 kHz, the word clock
input can resolve to a “low” rate of 48 kHz.
Similarly, when the 896mk3 is operating at
192 kHz, MOTU Audio Setup lets you choose a
word clock output rate of 48 kHz (the
Force 44.1/
48kHz setting).
On-board SMPTE synchronization
The 896mk3 can resolve directly to SMPTE time
code via any TRS analog input, without a separate
synchronizer. The 896mk3 can also generate
SMPTE time code via any XLR analog output. The
896mk3 provides a DSP-driven phase-lock engine
with sophisticated filtering that provides fast
lockup times and sub-frame accuracy.
The included MOTU SMPTE Console™ software
provides a complete set of tools for generating and
regenerating SMPTE time code, which allows you
to slave other devices to the computer. Like
CueMix FX, the synchronization features are
cross-platform and compatible with all audio
sequencer software that supports the ASIO2
sample-accurate sync protocol.