186 Chapter 17—Digital Audio I/O
D24—Owner’s Manual
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.

D24 Track AES/EBU Inputs AES/EBU Outputs
1 1/2 1/2
3 3/4 3/4
5 5/6 5/6
7 7/8 7/8
Sampling rate: 96 kHzDual AES/EBU mode I/O
000000 00
YAMAHAD24
OVER
READY
0
2
6
1012
1420
1830
2042
2660
–dB
OVERABS H
LOCK
TIME DISPLAY
CAPTUREABS/RELREMAIN
VARI
SPEEDUTILITY SETUP
PROJECT
SELECT
LOC MEM
RECALL
LOC MEM
STORE
LOCATEENTERCANCEL
0/-
1
4
7
8
R
7654321
RECORD
READY
SOLO/
SELECT
MONITOR SELECT
PEAK
HOLD AUTO
INPUTALL
INPUT FORMATCHASE
L
2
5
8
3
6
9
UNDO/
REDO
EDIT
JOG ON
JOG/DATASHUTTLE/
CURSOR
PROJECT SEARCH
RTN TO
ZERO
REW FF STOP PLAY REC
ROLL
BACK
LAST REC
SET
DIGITAL MULTITRACK RECORDER
REPEATREHE
PHONES
LEVEL
010
ON
POWER
OFF
PHONES
BA
B
A
AUTO
PUNCH
IN OUT
INT24 48K
MASTER
WC
BIT FS
TC
MSF
READY
0
2
6
12
20
30
42
60
–dB
V. TRACK
SELECT
mYGDAI: AES/EBU
(SLOT 1)
AES/EBU OutAES/EBU In
D24 (wc slave: SLOT 1 DUAL)
AD/DA converter (wc master)
AES/EBU breakout cable
25-pin D-sub connectorFemale XLR x4Male XLR x4
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)