Installation manual

Connecting the System
When the units are in position and all the cables have been identified and prepared, connect the
system as shown in the Custom Interconnect section.
Console to Racks Audio Interconnect
The Audio Cable from the Console is supplied with cable ends stripped and tinned only ready for
custom installation requirements.
XLR Pin Outs
The pin out for XLRs is:
o
Pin 1, Screen
o
Pin 2, Phase (or Hot)
o
Pin 3, Anti-Phase (or Cold)
and for dual circuit connectors:
o
Pin 4, Phase (or Hot), second circuit (or B channel)
o Pin 5, Anti-Phase (or Cold), second circuit (or B channel)
Pin 1 for outputs is directly connected to the chassis. Pin 1 for inputs is R.F. coupled to the chassis
to provide a screen but avoiding hum loop problems. The exception is the Mic/Line Unit where pin
1 for inputs is directly connected to chassis to provide phantom power.
The shell connection of the XLR connector is a direct connection to the chassis and should be used
for the O/P screen connection as this gives an improved R.F. connection and screening.
Audio Signals
All audio from the ADC and DAC cards are balance audio signals.
Meter Bridge VU Meters
If the console is supplied with the optional Meter Bridge the input connector to the 2 VU meters is
made via the 'AUXILIARY' port on the console connector panel.
Mating Connector Required: 15-way D type male
VU Meter Signal Pin No.
L
Hot 1
Cold 10
R
Hot 2
Cold 11
Logic MMC Installation Manual
Issue 5 Page 6