Redbox User Handbook No 1
31
DIGIT
AL A
UDIO C
ONVERTERS - RB
-SC2
4
DIGITAL AUDIO CONVERTERS
RB-SC2 Outputs
AES/EBU Outputs
The digital output XLR 3 pin socket has an impedance of 110Ω. It has the following
connections:
Pin 1: Screen.
Pin 2: Phase.
Pin 3: Non-phase.
The signals on this connector will comply with the IEC 60968 specification
S/PDIF Outputs
The digital output S/PDIF phono output has an impedance of 75Ω.
Optical Outputs
The digital audio optical output meets the TOSLink specification used by most professional
& consumer equipment.
The outputs will have a unweighted dynamic range of at least 138dB and a THD+N noise of
or better than –137dB. The data at the outputs will be presented as 24 bit wide.
Serial Port Control
The Serial Port allows the RB-SC2 to be controlled and updated from a PC via a pin-to-
pin serial cable, using the Sonifex Serial Control Interface (SCI) software. This software is
available as a free download from the Sonifex website at www.sonifex.co.uk/sci.
Default Settings for the Serial Port
Baud Rate:
19200
Data Bits:
8
Stop Bits:
1
Parity: Even
Handshaking: XON/XOFF
Fig 10: Serial Port Default Settings
Serial Interface Commands and Responses
Most of the commands follow the same structure: a 3 letter command followed by a colon,
followed by a parameter (if any) and terminated by Carriage Return with optional Line Feed.
A Line Feed character may be sent but it will be ignored by the RB-SC2. Commands are not
case sensitive and all parameters are in hex.
Responses are CR & LF terminated.