Akai DR4vr Operator's Manual page 34

26
Chapter
4:
Recording
Selecting the
Digital Inputs
Source
inputs are switched
in pairs: 1/2
and
3/4. So, for
example, you cannot
set
input
1
to
digital
and
input 2 to
analog
simultaneously.
Without
an optional IB-
1
lOD
Digital Interface card
installed,
channels
1/2 will
also be
set to
digital inputs
when
channels
3/4 are selected
for digital input.
Therefore, you cannot record an
analog
signal via inputs
1/2
and
a digital signal via inputs 3/4 simultaneously. Furthermore,
channels 3/4 are fed the
same
signals as those
for
channels 1/2 via digital
inputs
1/2
(l/O-A).
In
this
case,
you
can use
the
Channel
REC/VIRTUAL
TRACK
keys
to
decide
which
channels
record the
signals.
If all
channels
are
armed
for recording, the
same
signal will
be recorded on
channels
1
and
3;
likewise for channels 2 and
4.
With
the optional
card
installed,
you can
record
any
number
of channels simultaneously, each
with
individual
digital
inputs
and
outputs. In
this case,
channels
1/2 are
handled
via
DIGITAL
lyO-A, and
channels 3/4 via
DIGITAL
l/O-B. However,
to
record three or four channels
simultaneously, both
digital inputs
must
be connected
to the
same
digital
audio
device, or each
device
must
be wordclock
synced. This
is
because
the data received
at
both
digital
inputs
must
be
synchronized.
If
it
isn't,
noise
may
be produced.
1)
Connect
the
digital
signal to
ttie
selected
digital
input connection.
See
"Selecting the
Digital Input
Connection Type" on page
25.
2)
Press
tlie
INPUT SELECT DIGITAL
key
for
Inputs 1/2 or
3/4.
The DR4vr
will
synchronize
to the
incoming
digital signal.
If the
DR4vr
cannot synchronize
to the
incoming
digital signal, the
message no
dl
C IR will
appear on
the
display.
This
message means, no
digital
input signal
at
I/O-A.
If
the
same
problem
occurs with I/O-B,
the
message no
dl
C
lb
will appear
on
the
display. In either case,
the
DR4vr
will not
work
correctly,
so check
the
digital
connections on
the
DR4vr
and
the
device sending
the digital signal.
Setting
ttie
Digital
Output Format
Channel
signals are output
digitally via
XLR
and
RCA/phono
type connectors.
The
format of
the
digital
output
signal
can be
set to
either
Type
1
or
Type
2.
Type
1
is
sometimes
referred
to
as
AES/EBU
Professional,
and Type
2 as
S/PDIF Consumer.
Digital outputs
are
switched
in pairs:
channels
1/2
and channels
3/4.
So, for example, you
cannot
set
channel
1
to
Type
1
and channel 2
to
Type
2
simultaneously.
Without
the optional
IB-I
lOD
Digital Interface, only channel
signals 1/2
can be
output
digitally.
If
you need
to
output
three or four channels simultaneously via the
digital outputs,
use
the optional
interface.
To
set the digital output format:
1)
Press th®
SUB-MENU
key.
Its
indicator
will
Hash.
2)
Press ihe
D OUT
key
for
channels
1/2 or
3/4.
The
currently
set
output format
will
appear on
the display.
3)
Use the jog wheel
or shuttle control to specify
a
format.
Format
Display
Type
1
(AES/EBU
Professional)
Type
2 (S/PDIF
Consumer)
4)
Press the
STORE/ENT
key.
The
specified
format
will
be
selected.
Version 4.0
l2/y.S