Cadac CDC four - Manual (Page 15)

Revision 1 2012-13 CDC FOUR
15
Connector details
This section provides electrical details of the CDC FOUR’s inputs and outputs.
The tables at the end of this section, referred to in each connector description,
summarise wiring details.
1. Mic/line inputs 1-16 - Neutrik® Combo A connectors. These sockets accept
either a 3-pin XLR male connector or a ¼” (6.35 mm) 3-pole (TRS) jack plug. The
sensitivity of the XLR input is suitable for microphones, while the jack input, which
has an 18 dB pad, is intended for line level sources. The inputs are electronically
balanced with an impedance of 1.2k ohms (mic) or 10k ohms (line). Nominal input
level at the XLR (with gain control at minimum) is 0 dBu; maximum input level
is +21 dBu. (Note that Cadac define 0 dBFS to be equivalent to +21 dBu in the
CDC FOUR). 48 V phantom power is available at the XLR pins of this connector,
switchable from the channel strip.
The mic/line inputs should be wired as per Table A (XLR connectors) or as per
Table B (jack plugs).
2. Stereo line inputs 1-8 – eight pairs of ¼” (6.35 mm) 3-pole (TRS) jack sockets
(separate L and R inputs). Intended for connection to the line outputs of external
stereo equipment, including outboard FX processors and stereo tape returns.
The inputs are electronically balanced with an impedance of 10k ohms. Nominal
input level is 0 dBu; maximum input level is +21 dBu.
The stereo line inputs should be wired as per Table B.
3. Direct outputs 1-16 – pre-fade outputs from each of the 16 mono mic/line
channels. The outputs are electronically balanced on ¼” (6.35 mm) 3-pole (TRS)
jack sockets, and have a maximum output level of +21 dBu.
The direct outs should be wired as per Table B.
4. Channel inserts 1-16 – send and return insert points in each mono mic/line
channel. The send and return are both unbalanced, and have a maximum level of
+10 dBu. The connectors are ¼” (6.35 mm) 3-pole (TRS) jack sockets.
The inserts should be wired as per Table C.
5. Group outputs 1-4 – post-fade outputs of the four audio subgroups. Outputs
are electronically balanced on ¼” (6.35 mm) 3-pole (TRS) jack sockets, and have
a maximum output level of +21 dBu.
The group outputs should be wired as per Table B.
6. Aux sends 1-8 – the outputs of the mixer’s eight auxiliary busses. Every
channel can send pre- or post-fade to each Aux buss, and each Aux buss has a
master level. The Aux busses can be used as sends to external FX equipment
(normally pre-fade), or as performers’ foldback (normally post-fade). The outputs
are electronically balanced on ¼” (6.35 mm) 3-pole (TRS) jack sockets, and have
a maximum output level of +21 dBu.
The Aux sends should be wired as per Table B.