Handbook

Redbox User Handbook No 1
17
Upgrading Firmware
Occasionally, it may be necessary to upgrade the rmware on the RB-ADDA2 to add new
functionality and x software bugs. New rmware updates will be made available from time
to time on the Sonifex website. Visit www.sonifex.co.uk for details.
The rmware is upgraded using the Serial Control Interface - SCI. This PC software
downloads the new rmware and initiates the upgrade process. To upgrade the rmware,
select the required rmware le in the SCI upgrade rmware section. The RB-ADDA2 will
automatically reboot and enter the bootstrap mode prior to the transfer of the rmware le.
The SCI software downloads the rmware to internal memory, and then erases the current
rmware before programming the update. When the rmware is complete, the unit reboots
with the new rmware.
Please note: Firmware les 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
rmware.
Technical Specications 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 Specication
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: Switchable +24dBu/+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
DIGITAL AUDIO CONVERTERS - RB-ADDA2
2
DIGITAL AUDIO CONVERTERS