8
©audient 05/2008
Operation Manual
Installation
Two optional digital interface cards are available for ASP008, either one can be factory
or retrofitted to all units. A cover plate is fitted to the rear of the chassis when neither of
the options is installed.
ADAT
TM
SMUX
Digital Interfaces
A 9-Pin female D-sub type connector is
used to provide the required 8 digital
outputs (in 4 pairs - pair 1 carries channels
1/2 etc) at 44.1/48/88.2/96kHz (selectable
on the front panel) or external sample
rates. Separate fan-out cables are available
with XLR terminations for AES and RCA-
phono connections for SPDIF.
AES format is selected when the
associated switch is in its normal
(released) state. Depressing this switch
will set the outputs to SPDIF format.
The AES output is always 24 bit and is
not effected by the front panel format
control.
This card provides ADAT
TM
digital outputs
at 44.1/48/88.2 or 96kHz (selectable on
the front panel) or at external sample rates
for all 8 channels on single (44.1/48kHz)
or dual (88.2/96kHz) ‘light pipe‘
connectors. The outputs can be set to 16/
20 or 24 bit depth using the front panel
controls.
At 88.2 and 96kHz sample rates, channels
1-4 use the upper ‘light-pipe’ connector
with channels 5-8 on the lower connector.
Channels 1-8 are output on both
connectors at 44.1 and 48kHz sample
rates.
AES/SPDIF ( with ADAT
TM
SMUX)
ADAT 1-4
AES
INT
WORD
CLOCK
ADAT 5-8
C H A N N E L
N U M B E R S
S I G N A L
H O T
(Phono
centre pin/
XLR PIN 2)
S I G N A L
C O L D
(Phono
sleeve/
XLR PIN 3)
S C R E E N
(XLR PIN 1)
D -SUB PIN
1 + 2
9
5
1 -SHELL
3 + 4
8
4
1 -SHELL
5 + 6
7
3
1 -SHELL
7 + 8
6
2
1 -SHELL
Word Clock
A BNC along with an INT/EXT function
select switch is provided on both digital
output cards. With the switch released the
ASP008 will run off its internal clock
generator. Depressing the switch allows
a master word clock to be connected via
the BNC enabling the ASP008 converters
to be sync’d to an external source. The
front panel mounted LOCK led will
illuminate when the unit is locked, or flash
if word clock is not present or not
synchronised.
If external word clock is selected the
sample rate switch on the front panel will
no longer be operative.
The second card option provides AES/
SPDIF interfaces in addition to the ADAT
ports mentioned above.
ADAT 1-4
AES
WORD
CLOCK
ADAT 5-8
ADAT 1-4
AES
INT
WORD
CLOCK
ADAT 5-8
ASP008 units support SMUX operation
from Serial number 180721. Earlier units
have provision for only the upper light-
pipe connector. The daughter board
carrying the lower connector on the digital
interface card must be unplugged for this
configuation, which provides connectivity
for channels 1-8 at 44.1 and 48kHz but
only for channels 1-4 at 88.2 and 96kHz.
The clock input on ASP008 is factory set
to be terminated. If the unit is to be used
in a wordclock chain the clock input
should be re-set to HiZ (unterminated).
To do this, set jumper JP1 (near the
output connectors on the digital card) to
the HiZ position.
