Redbox User Handbook No 1
25
D
IG
IT
A
L
A
U
D
IO
C
O
N
V
E
R
T
E
R
S
-
R
B
-D
A
C
1
4
DIGITAL AUDIO CONVERTERS
4 RB-DAC1 Digital to Analogue Converter
Introduction
Fig 4-1: RB-DAC1 Front Panel
Using 24 bit, 96kHz capable devices, the RB-DAC1 Digital to Analogue Converter is a 1U
rack-mount which produces a stereo balanced XLR or unbalanced phono output from an
incoming AES/EBU or S/PDIF digital input signal. There is also a headphone output for
monitoring purposes.
The analogue outputs have an output level control, allowing full-scale settings selectable
from +12dBu, +18dBu or +24dBu. De-emphasis on the output can be enabled via
dipswitch.
There is a button to select either the AES/EBU or S/PDIF input for the D/A converter, which is
located on the rear panel.
When operating, the front panel power LED flashes whenever the unit is not synchronised
to the incoming digital signal.
System Block Diagram
Fig 4-2: RB-DAC1 System Block Diagram
L
L
R
R
AES/EBU
S/PDIF
Digital
Input
Volume Control
Stereo
Headphone
Output
Professional
Output
Consumer
Output
Digital Source
Selector
AES
Receiver
DAC
