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5.2.2 Audio input and output connectors
The rear panel features eight audio input connectors with the
following assignments:
▪ four analog inputs (A1 - A4) with corresponding link outputs.
▪ two digital AES3 inputs (D1/2 and D3/4 - four channels) with
corresponding outputs.
Each input channel can be routed to any of the output channels A
to D Þ Input routing.
Analog INPUT and LINK (A1 - A4)
A 3-pin female XLR input connector is provided for each channel.
Wired in parallel is a 3-pin male XLR input link connector used to
feed the input signal onto the next device in the signal chain.
Specifications
Pin assignment 1 = GND, 2 = pos., 3 = neg.
Input impedance 32 kOhms, electronically balanced
CMRR @ 100 Hz/1 kHz / 10 kHz >80 / >80 / >70 dB
Maximum input level (balanced/unbalanced) +25 / +18 dBu
+27.3 dBu @ 0 dBFS
LINK (A1 - A4) 3 pin XLR male
parallel to input
Digital input and output (IN/OUT - D1/2 - D3/4)
Two 3-pin female XLR digital input (IN) connectors (D1/2 and
D3/4) are provided, each accepting a 2-channel AES (AES3)
digital audio signal.
The corresponding 3-pin XLR male digital output (OUT) can be
used to feed a refreshed input signal to the next device in the
signal chain. The signal shape (the rising and falling edges of the
signal) and level are refreshed using a latency free analog buffer
amplifier.
A power fail relay is incorporated to prevent interruption of the
signal chain should there be a power failure. In this situation, the
digital input signal bypasses the analog buffer amplifier and is
routed directly to the output (OUT).
Specifications
Pin assignment 1 = GND, 2 = AES Signal, 3 = AES Signal
Input impedance 110 ohms, transformer balanced
Sampling frequency 44.1 | 48 | 96 | 192 kHz
Word length 16 - 24 bit
OUT (D1/2 - D3/4) 3-pin XLR male
electronically balanced
analog signal buffering (refresh)
Power Fail Relay (Bypass)
d&b D40 Reference manual 1.5 en16
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