Using Dual Aes/Ebu Mode - Yamaha D24 Owner's Manual

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Chapter 17—Digital Audio I/O

Using Dual AES/EBU Mode

When using the higher sampling rates of 88.2 kHz and 96 kHz, the number of tracks is
reduced from eight to four and the available tracks are 1, 3, 5, and 7. Project, track, and
part editing functions are not available in this mode. For digital I/O, the D24 uses what's
known as Dual AES/EBU mode, in which the wordclock frequency is exactly half that
of the sampling rate. With a sampling rate of 96 kHz, for example, the wordclock fre-
quency is 48 kHz. Digital I/O in Dual AES/EBU mode is only available with AES/EBU
mini YGDAI cards.
In Dual AES/EBU mode, each AES/EBU format digital I/O signal is split in two, requir-
ing two transmission channels. Normally, two AES/EBU format signals, left and right,
for example, are transmitted by a single balanced connection. In Dual AS/EBU mode,
however, only one AES/EBU format signal can be transmitted per connection.
The following table shows which tracks and AES/EBU inputs and outputs are used in
Dual AES/EBU mode.
The adjacent illustration shows how
external equipment, in this case a
2-channel AD/DA converter that sup-
ports Dual AES/EBU, can be con-
nected to the D24 for Dual AES/EBU
operation. A custom breakout cable is
used to connect the D24 and con-
verter. Each XLR connection handles a
single AES/EBU signal, so 2-track
recording and playback is possible.
The sampling rate is 96 kHz and the
wordclock frequency is 48 kHz.
Shown below is an AES/EBU breakout
cable similar to the one used in this
system.
25-pin D-sub connector
D24—Owner's Manual
D24 Track
1
3
5
7
AES/EBU breakout cable
AES/EBU Inputs
1/2
3/4
5/6
7/8
D24 (wc slave:
OVER
–dB 0
2
6
10 12
14 20
18 30
20
42
26 60
READY
1 2 3
RECORD
READY
SOLO/
SELECT
PEAK AUTO
HOLD INPUT
MONITOR SELECT
AES/EBU In
AD/DA converter (wc master)
Female XLR x4
Male XLR x4
AES/EBU Outputs
1/2
3/4
5/6
7/8
)
SLOT 1 DUAL
TIME DISPLAY DIGITAL MULTITRACK RECORDER
CAPTURE ABS/REL REMAIN
ABS H M S F
OVER
0 –dB
2
6
VARI
SPEED UTILITY SETUP
12
20
30
42
LOCK WC INT FS 48K
60 V. TRACK EDIT UNDO/
READY BIT 24 TC MASTER SELECT REDO
L R
PROJECT SEARCH LAST REC
SET AUTO
8 7 8 9 PROJECT IN OUT PUNCH
4 5 6 7 SELECT JOG ON
LOC MEM
4 5 6 RTN TO ROLL REPEAT
RECALL A B REHE
ZERO BACK A B
1 2 3 LOC MEM
STORE
REW FF STOP PLAY REC
ALL
FORMAT CHASE
INPUT
0/- CANCEL ENTER LOCATE
JOG/DATA SHUTTLE/
CURSOR
mYGDAI: AES/EBU
(SLOT 1)
AES/EBU Out
Sampling rate: 96 kHz
Dual AES/EBU mode I/O
TRK 1 (outputs 1/2)
TRK 3 (outputs 3/4)
TRK 5 (outputs 5/6)
TRK 7 (outputs 7/8)
TRK 1 (inputs 1/2)
TRK 3 (inputs 3/4)
TRK 5 (inputs 5/6)
TRK 7 (inputs 7/8)
POWER
ON OFF
0 10
PHONES
LEVEL
PHONES