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AUDIO INTERFACES
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DIGITAL AUDIO CONVERTERS
Redbox - Digital - Audio Converters
RB-ADDA2 A/D and D/A Converter, 24 bit 192kHz
The RB-ADDA2 A/D and D/A converter
is a 1U rack-mount which produces an
AES/EBU, S/PDIF or TOSlink optical level
digital audio output from a balanced
XLR or unbalanced phono stereo audio
input. It also produces a stereo balanced
XLR or unbalanced phono output from
an incoming AES/EBU, S/PDIF or TOSlink
optical digital input signal.
The RB-ADDA2 is a high performance,
enhanced version of the RB-ADDA
providing the following additional features:
• Itsupportshighersamplefrequency
rates up to and including 176.4kHz
and 192kHz.
• IthasadditionalindependentAES/EBU
andWordClocksynchronisinginputs,
so that the A/D and D/A sections can
operateindependently,withthedigital
outputssynchronisedtoanexternal
master reference clock.
• IthasTOSlinkopticaldigitalaudioinput
and output.
• Ithasfrontpanelpush-buttonswitches
for all the main settings. The buttons
are arranged in sets, where pressing the
button advances the current selection
and LED indicator.
• AserialRS232portisincludedsothat
the RB-ADDA2 settings can be controlled
remotely.ThefrontpanelLEDindicators
alterautomaticallywhenusing
RS232commands.
The A/D SOURCE push-button is used
to select from either the balanced or
unbalanced stereo analogue inputs and
this push-button also denes the input
level for full scale digits at one of +12dBFS,
+18dBFS or +24dBFS. These values can
thenbene-tunedbyusingrear-panel
pre-set potentiometers which give another
±3dBofgainadjustment,allowingasignal
range from +9dBu to +27dBu. The RCA
phono inputs have a further 10dB gain
incorporated to give a total gain range of
-1dBu to +17dBu for full-scale digits.
For the digital output, there are three
push-button switches to select the sample
frequency,bitdepthandstatusbitmodes.
The FREQUENCY button allows selection
ofthemastersamplefrequencyfromone
of32kHz,44.1kHz,48kHz,88.2kHz,96kHz,
176.4kHz or 192kHz. The BITS button sets
the output bit depth as one of 16, 20 or
24 bits, and the CS DATA button denes
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A 1U rack-mount which produces
an AES/EBU, S/PDIF or TOSlink
optical level digital audio output
from a balanced XLR or unbalanced
phono stereo audio input.
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