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AES/EBU Input
The digital input XLR 3-pin socket has an impedance of 110Ω. It has the following
connections:
■
Pin 1: Screen.
■
Pin 2: Signal +ve (hot)
■
Pin 3: Signal -ve (cold)
SPDIF Input
The SPDIF input has an impedance of 75Ω.
Outputs
Analogue Outputs (Left and Right)
The XLR 3-pin output connectors are electronically balanced with an output
impedance of less than 50Ω. They have the following connections :
■
Pin 1: Screen.
■
Pin 2: Signal +ve (hot)
■
Pin 3: Signal -ve (cold)
RCA phono Outputs (Left and Right)
These RCA (phono) outputs are unbalanced and have an output impedance of
less than 75Ω.
Output Level Adjustment
The output gain can be adjusted individually for the left and right channels using
the rear panel DIP switches. Each output gain can be set such that a full-scale
digital output provides +12, +18 or +24dBu output on the analogue XLR
connectors.
The level at the unbalanced output is 10dB lower than at the balanced output.
AES/EBU Output
The digital output XLR 3-pin socket has an impedance of 110Ω, and output
signals comply with IEC 60958. The socket has the following connections:
■
Pin 1: Screen.
■
Pin 2: Signal +ve (hot)
■
Pin 3: Signal -ve (cold)
SPDIF Output
The SPDIF output has an impedance of 75Ω.
REAR PANEL CONNECTIONS AND
OPERATION
Inputs
XLR Analogue Inputs (Left and Right)
The XLR 3-pin sockets used for the analogue left and right channel inputs
are electronically balanced and have an impedance of greater than 10kΩ
bridging. Each XLR has the following connections:
■
Pin 1: Screen.
■
Pin 2: Signal +ve (hot)
■
Pin 3: Signal -ve (cold)
RCA Phono Inputs (Left and Right)
The left and right RCA (phono) analogue inputs are unbalanced and have
an impedance of greater than 20kΩ.
Input Level Adjustment
The input gain can be adjusted individually for the left and right channels
using the DIP switches and the preset potentiometers accessible on the
rear panel. The input gain can be set such that signals of +12, +18 or
+24dBu generate full-scale signals in the digital domain. Individual preset
controls provide a further ± 3dB to give an input level range of +9dBu to
+27dBu.
The consumer input on the phono connector has a further gain of 10dB to
provide an input level range of -1dBu to +17dBu.
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