Manual

Chapter 4 - RB-ADDA Combined A/D and D/A Converter
4-4 Redbox User Handbook
4.4.1.5. S/PDIF Inputs
The S/PDIF digital phono inputs have an impedance of 75 Ω.
4.4.2. RB-ADDA Outputs
4.4.2.1. Analogue Outputs (Left and Right)
The XLR 3 pin output plug connectors are electronically balanced with an output
impedance of less than 50 Ω. They have the following connections:
Pin 1: Screen.
Pin 2: Phase.
Pin 3: Non-phase.
4.4.2.2. RCA Phono Outputs (Left and Right)
These RCA (phono) outputs are unbalanced and have an output impedance of less
than 75Ω.
4.4.2.3. Output Level Adjustment
The output gain can be individually adjusted for left and right channels through the
rear panel by dipswitches. Each output gain can be set for a signal of full-scale digits
in the digital domain to give +12, +18 or +24dBu output on the XLR connectors (see
Fig 4-4). The consumer output on the phono connector has a further 10dbU
attenuation incorporated.
4.4.2.4. AES/EBU Output
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
4.4.2.5. S/PDIF Output
The digital output S/PDIF phono output has an impedance of 75Ω.