Handbook

46
Redbox User Handbook No 1
DIGITAL AUDIO CONVERTERS
DIGITAL AUDIO CONVERTERS - RB-SP1
6
2. With switch 3 on (switch 1 is ignored), channel A (Left) is transferred to both channels on
output 1 and channel B (Right) on the input is transferred to both channels on output 2.
In Combine mode with switch 1 o, channel A (Left) on input 1 is transferred to channel
A (Left) of output 1, and channel A (Left) on input 2 is transferred to channel B (Right) of
output 1. With switch 1 on channel A (Left) on input 1 is transferred to channel A (Left) of
output 1, and channel B (Right) on input 2 is transferred to channel B (Right) of output 1.
Switching on the Sample Rate Converter - Switch 2 is used to turn the sample rate
converter on, or o and can be used in all modes. When there are two inputs connected
to the unit which are at dierent sample rates or which need to be synchronised, then the
sample rate converter should be switched on. If it is not, then you may suer from missed
samples and bit errors aecting the signal output. If the sample rates of the incoming
signals are always going to be the same and are synchronised, then switch the sample rate
converter o, as leaving it on will worsen the output signal (signal jitter will increase).
Technical Specications RB-SP1
Audio Specications
Input Impedance: 110Ω ± 20% balanced (AES/EBU)
Input Impedance: 75Ω ±5% unbalanced (S/PDIF)
Output Impedance: 110Ω ± 20% balanced (AES/EBU)
Output Impedance: 75Ω ±5% unbalanced (S/PDIF)
Signal Level 3V/10V peak to peak min/max (AES/EBU)
0.5V ±20% peak to peak (S/PDIF)
Sample Freq Range: 30-100kHz (i.e. including 32kHz, 44.1kHz, 48kHz, 64kHz,
88.2kHz and 96kHz)
Connections
Audio Inputs: 2 x AES/EBU XLR 3 pin female
2 x S/PDIF RCA phono female
(Input button select between AES/EBU and S/PDIF)
Audio Outputs: 2 x AES/EBU XLR 3 pin male
2 x S/PDIF RCA phono female
(Output button selects between AES/EBU and S/PDIF)