d&b D12 Hardware - Manual (Page 17)

5.2. Connector panel (I/O Panel)
OUT A
OUT B
INPUT LINK
CH B
ANALOG
DIGITAL
AES/EBU
CH A
ANALOG
Fig. 12: D12 I/O Panel
All signal input and output connections are located on the rear I/O
panel.
These include analog and digital (AES/EBU) signal inputs and link
outputs for each channel. Loudspeaker outputs are optionally either
EP5, NL4 or NL8, dependent on the loudspeaker input version or type.
5.2.1. INPUT A/B [12] and LINK A/B [13]
Fig. 13: Pin assignment D12 ANALOG
INPUT/LINK
A 3 pin female XLR input connector is provided for channel A and B.
Wired in parallel is a 3 pin male XLR input link connector used to feed
the input signal on to the next device in the system signal chain.
5.2.2. INPUT DIGITAL AES/EBU [14a] and LINK [14b]
Fig. 14: Pin assignment D12 DIGITAL
INPUT/LINK
Digital INPUT
(AES/EBU)
Digital LINK
Power fail (Bypass)
Buffer
Fig. 15: D12 Digital INPUT and LINK
A 3 pin female XLR AES/EBU (AES 3) input [14a] and a 3 pin male XLR
LINK output [14b] are provided.
The balanced input utilizes a transformer and is electrically isolated.
The digital LINK output may be used to feed a refreshed input signal to
the next device in the system signal chain. The signal shape (the rising
and trailing edges of the signal) and level are refreshed with an analog
signal 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
LINK output.
5.2.3. OUT A/B [15 (a/b/c)]
OUT A
OUT B
[15a]
OUT A
OUT B
[15b]
OUT A
OUT B
[15c]
Fig. 16: D12 EP5 [15a], NL4 [15b]
or NL8 [15c] output connectors
The D12 amplifier is supplied with EP5, NL4 or NL8 output connectors
as an option.
The pin assignment for the loudspeaker output connectors is
automatically switched depending on the I/O mode selected.
5.2.4. D12 I/O modes
There are three different output modes:
1. Dual channel mode
2. Mix TOP/SUB mode
3. 2-Way Active mode
Note: For further information regarding the applicable output
modes for each loudspeaker system, please refer to the
respective loudspeaker manual.
Ensure that the connected loudspeaker type corresponds to
the actual configuration of the D12.
D12 Amplifier, Hardware manual (4.9 EN) Page 17 of 28