Audient ASP800, Руководство пользователя

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Analogue DB25 Line Outputs
ASP800 features 8 analogue, ground
sensing line driver outputs on DB25. These
fully balanced outputs use the same sense
circuitry as our proven ASP8024 flagship
console (insert sends etc) and offer a
simple, yet elegant output stage for driving
into whatever analogue destination you are
feeding, such as a standalone A-D converter
or analogue mixing console.
These outputs are wired as Tascam DB25
standard with <200Ω output impedance and
+22dBu maximum level.
Digital Output - ADAT SMUX
The digital card also provides simultaneous
ADAT optical output on the rear of the unit
with full SMUX double speed capability. For
44.1 or 48kHz operation, a single optical
cable should be connected to either ADAT
ports. This will provide all 8-channels on a
single port, and you can use both ports at
the same time for redundant recording. For
88.2 or 96kHz operation, two optical cables
should be used for full 8 channel operation,
with four channels carried on each.
0 dBFS ADC Calibration
This switch changes the converter reference
level so that 0dBFS = +12dBu or +18dBu.
This feature is provided to match the input
level to that of your audio interface. For
example, if using ASP800 with one of our
own interfaces you should set it as follows:
Audio Interface 0 dBFS Reference
iD22 (Professional) +18 dBu
iD14 (Prosumer)
+12 dBu
ASP800 ANALOGUE OUTPUTS
TASCAM FORMAT DB25
HARDWARE fEATuREs || OuTPuTs sETuP
Setting Levels & Gain
ASP800 has plenty of analogue headroom,
running internally on +/-15V DC rails.
The unit can deliver up to +22dBu at the
analogue output DB25 on the rear of the unit.
Which is enough to drive most standalone
A-D converters into full scale overload.
However it would be typical in modern
digital recording situations that ASP800 is
using our own internal pristine 116dB ADC
converters to produce a digital output for
recording via the built-in ADAT digital output.
In this case, the ASP800 has a variable digital
line-up reference of +18dBu or +12dBu
= 0dBFS (full scale), which you can select
depending upon the line-up level of your
interface and whether you have the 0dBFS
ADC Callibration switch engaged. (see page
15).
As a target guide, we would recommend
that you turn up the ASP800 gain pots to
produce a -10dBFS peak signal level in your
DAW when recording. This will maintain
plenty of headroom which often makes things
sound better. To do this, adjust the gain knob
on ASP800 whilst observing the metering in
your interface or DAW application.
The LED metering on the ASP800 will show
signal present at -38dBFS with a peak LED
warning of potential overloads at -2dBFS.
However please rely upon the recording
destination for accurate metering, ideally
you should never be so close to light the
PEAK LED!
Aim for -10dBfs peaks on the loude
st sections
when setting gain & recording levels in t
he DAW!