INSTALLATION and POWER
page 1 – 11
D-70 / Apr 2000
CONNECTORS - All AES/EBU connections are made with the
supplied six-conductor connectors. These crimp style connectors will
accept wire gauge 24 - 22AWG.
SPDIF INPUTS - The SPDIF (Sony/Philips Digital Interface) or
“consumer” digital audio interface is a two wire unbalanced signal
typically on a single RCA style connector. To connect SPDIF devices
to the D-70 console simply wire the SPDIF center conductor (HOT) to
the IND-70 “HI” input pin and SPDIF shell (ground) to the IND-70
“LO” input. Connect the IND-70 “SH” at the console end only.
Analog Insert Points
Certain module signals have insert patch points in their signal
chains to allow outboard audio processing. These include MONO MIC
INPUTS (IND-70).
Normally these points are internally bridged at the factory (via
PCB-mounted programming jumpers) prior to shipment. If you intend
to use outboard signal loops at these points, you must reprogram these
jumpers. See pages 2-3 (mic inputs).
Unbalanced Connections (analog audio)
ANALOG INPUTS — Wire to the console with typical shielded
two conductor cable (like Belden 9451), just as if you were connecting
a balanced source. At the unbalanced source machine’s output, connect
the black wire (LOW) to the shield. If the machine has a -10 dBu output,
don’t hesitate to turn module input gain as high as is needed.
ANALOG OUTPUTS — D-70 consoles use a balanced output
circuit which behaves exactly like the secondary of a high-quality
transformer, with no center tap—this output is both balanced and
floating. Either the HIGH or LOW side of the output should be strapped
to ground, with the output taken from the other side. (Normally you’d
strap LOW to ground, and take HIGH to feed your unbalanced
equipment.)
page 1 – 10D-70 / Jun 2002
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