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1. RB-DDA22 22 Way Stereo Digital Audio Distribution Amplifier
Introduction
Fig 1-1: RB-DDA22 Front Panel
The RB-DDA22 digital distribution amplifier is used for distributing digital audio data in
many formats, repeating both the audio data and the status information of the input whilst
re-clocking the data and re-normalising to the appropriate standard digital audio levels.
The unit has 5 inputs and you can select one of them to distribute to all of the 22 outputs.
Input Signals:
•
1 x XLR 3 female AES/EBU digital audio input
•
1 x BNC AES-3id digital audio input
•
1 x RJ45 AES/EBU digital audio input
•
1 x RCA Phono S/PDIF input
•
1 x TOSLink digital audio optical input
Output Signals:
•
6 x XLR-3 male AES/EBU digital audio outputs
•
6 x BNC AES-3id digital audio outputs
•
6 x RJ45 AES/EBU digital audio outputs
•
2 x RCA Phono S/PDIF outputs
•
2 x TOSLink optical outputs
The RJ-45 connectors are wired to be StudioHub+ compatible, a format defined by Radio
Systems Inc.
Applications include distributing audio from a digital mixing desk to multiple digital
recorders, or feeding multiple studios with an output from a USB audio player.
It can accept input sample rates in the range of 30kHz - 200kHz, and bit rates of 16, 20 and
24 bit. So, it can be used for standard CD signal distribution at 16 bit 44.1kHz, as well as for
high quality 24 bit 96kHz or 192kHz recording.
Fig 1-2: RB-DDA22 Front Panel Controls
StudioHub+TM is a registered trademark of Radio Systems Inc
Redbox RB-DDA22 User Handbook
INTRODUCTION
The front panel has an INPUT SELECT button
and 7 indicator LEDS. The button is used to
select the input to be used and shows the
mode of operation of the unit. The LEDs
will indicate, depending on the mode of
operation, the input selected, valid signal
presence, or the operational frequency.
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