Owner's Manual
The
remaining
analogue
inputs
are
for
an
external
mono
signal
[EXT 1/Pl and
stereo
signal
[CUE MIX LEFT/RIGHT). The
mono
signal
connected
to EXT
1/P
is
summed
with
the
main
input
signal
and
sent
to
the
headphones
for
monitoring,
as
well
as being
sent
independently
to
the
second
channel
of the ADC,
if
installed.
[See
the
Digital
Options
or
Monitoring
Options
sections
for
details.)
The
stereo
signal
connected
to
CUE
MIX can
be
routed
to
the
headphones
by
activating
the
CUE
MIX
switch
on
the
front
panel.
[See
the
Monitoring
Options
section
for
details.)
Analogue outputs
There
are
two
analogue
outputs
on
the
rear
panel
of ISA One. The MAIN
0/P
[channel
1)
and
the
Dl
0/P
[channel2l.
The
first
channel
relates
to the
main
input
signal
being
processed,
and is
selected
using
the
INPUT
switch
on
the
front
panel. The second
channel
is
always
the
instrument
signal
that
is
connected
to
the
Dl
input
on
the
front
panel.
Insert
The
two
INSERT
connectors
are
for
sending
and
returning
the
main
mic/line/inst
signal
to and
from
an
additional
processor,
like
a
compressor.
Connect
SEND to
the
input
of
the
additional
processor
and RETURN to
its
output,
preferably
with
balanced
cables
as
both
inputs
are%"
TRS
Jack.
Make
sure
that
the
INSERT
switch
is
activated
on
the
front
panel
if
using
the
Insert
facility,
so
that
the
RETURN
signal
is
routed
to
the
meters
[with
the
POST INSERT
switch
engaged). MAIN
0/P
and
channel1
of
the
Digital
Output
Card.
For
more
information
on using
the
ISA One
Insert,
see
the
INSERT
section
in the
Front
Panel
Overview.
ADC
- Optional Digital
Output
Card
ISA One can
be
used as a high
quality
two-channel
ADC to
convert
analogue
signals
to
various
digital
formats
[AES,
S/PDIF
and
ADATl. Using
the
Digital
Output
Card [ADCl. It can be
retrofitted
to
your
ISA One at any
time.
No
engineering
experience
is
required
as
the
card
can
be
fitted
easily
by
the
user
.
1.
Word
clock
In
and Out [BNC
connectors)
2.
Optical/TOSLink
Digital
Outputs
[ADAT and S/PDIF)
3.
AES
or
S/PDIF
Select
Switch
for
the
9-pin
Digital
Output
4.
9-pin
Digital
Output
[AES
or
S/PDI
F,
selected
by
the
adjacent
switch)
5.
Selects
1-wire
or
2-wire
mode
across
the
9-pin
Output
to
allow
ISA One to
be
connected
to
older
digital
equipment
The
Digital
Output
Card can
convert
two
separate
channels
of audio. The second of
the
two
channels
received at
the
ADC
Input
is
determined
by a
connection
on
the
rear
panel.
With
no
signal
connected
to
EXT
1/P,
the
second
channel
is fed
from
the
Dl
[Instrument)
input
on
the
front
panel.
Connecting
a
signal
to EXT
1/P
makes
that
signal
replace
the
instrument
as
the
second
channel
going into
the
ADC. The
first
channel,
however,
will
always
be
the
main
mic/line/inst
input
selected
by
the
INPUT
switch
on
the
front
panel. The LED
meters
on
the
front
panel
can be used to
view
the
levels
of
the
two
channels
received at
the
ADC
input.
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