Redbox RB-DDA6A-2P User Handbook
1
INTRODUC
TION
INTRODUCTION
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RB-DDA6A-2P 6 Way Stereo AES/EBU Digital Distribution
Amplifier With Dual Power Supplies
Introduction
Fig 1-1: RB-DDA6A-2P Front Panel.
The RB-DDA6A-2P digital distribution amplifier is used for distributing digital audio data
in AES/EBU format, repeating both the audio data and the status information of the input
whilst re-normalising to standard digital audio levels.
It has a single XLR-3 female AES/EBU audio input which is distributed to 6 XLR-3 male AES/
EBU outputs.
Applications include distributing audio from a digital mixing desk to multiple digital
recorders, or feeding multiple studios with an output from a DAT machine.
It can accept input sample rates in the range of 30kHz - 100kHz, 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 recording.
The unit provides redundancy protection by using two power supply units that can be
supplied from separate mains feeds. The unit automatically load shares between the two
supplies so that if either supply should fail the unit will continue to work correctly. If both
supplies fail the input is connected directly to output 1.
The condition of the two supplies is indicated on the front panel by two red LEDs which
illuminate to indicate the correct function of the supply. On the alarm output connector
there is a changeover relay to indicate the status of each supply. This is normally closed to
indicate power fail and once the supply is working correctly the relay activates to make a
normally open contact.
Power Indicator
LEDs