Redbox User Handbook No 1
17
Upgrading Firmware
Occasionally, it may be necessary to upgrade the firmware on the RB-ADDA2 to add new
functionality and fix software bugs. New firmware updates will be made available from time
to time on the Sonifex website. Visit www.sonifex.co.uk for details.
The firmware is upgraded using the Serial Control Interface - SCI. This PC software
downloads the new firmware and initiates the upgrade process. To upgrade the firmware,
select the required firmware file in the SCI upgrade firmware section. The RB-ADDA2 will
automatically reboot and enter the bootstrap mode prior to the transfer of the firmware file.
The SCI software downloads the firmware to internal memory, and then erases the current
firmware before programming the update. When the firmware is complete, the unit reboots
with the new firmware.
Please note: Firmware files can take several minutes to transfer to the RB-ADDA2 at lower
baud rates. To speed up the process, select a higher baud rate prior to transferring the new
firmware.
Technical Specifications RB-ADDA2
A/D Connections
Analogue Inputs:
2 x XLR 3 pin (balanced) (L & R)
2 x RCA phono (unbalanced) (L & R)
Digital Outputs:
1 x AES/EBU XLR 3 pin plug
1 x S/PDIF RCA phono socket
1 x TOSLink optical output
Sync Inputs:
1 x AES/EBU XLR 3 pin female
1 x Word Clock BNC
A/D Audio Specification
Maximum Input Level:
+27dBu (balanced inputs)
Maximum Input Level:
+17dBu (unbalanced inputs)
Input Impedance:
>10kΩ bridging (balanced inputs)
Input Impedance:
>20kΩ (unbalanced inputs)
Input Levels:
Swit24dBu/+18dBu/+12dBu for FSD (on bal inputs)
Gain Range:
Adjustable 3dB loss to 3dB gain (L and R adjust)
Signal to Noise:
Better than –113dbFS (RMS A-weighted at 24bit)*
Dynamic Range:
Better than -110dB*
Distortion and Noise:
Better than -100dB THD + N at 1kHz*
Cross-talk:
Better than -112dB (20Hz to 20kHz)*
* Measured using balanced inputs
DIGIT
AL A
UDIO C
ONVERTERS - RB
-ADD
A2
2
DIGITAL AUDIO CONVERTERS