9-2
T
ECHNICAL
C
HARACTERISTICS
R
ACKS AND
M
ODULES
User Guide - © InnovaSON - May 2004
9.B Audio Rack and modules
Built to a standard format – 19 inches wide (482 mm), 7U high (312 mm) – the frame is 325 mm (13
inches) deep (see section 2.A). It is designed to house the various modules that make up the required
configuration.
The same mechanical rack is used for a Stage Box or a Mix Box, only the DSP and control modules
differentiate their use. The audio rack for an Sy40 console is integrated into the rear of the control
surface. It is electronically compatible, but mechanically different, see section 2 for details.
Whatever the type of installation, it is essential that the ventilation slots at the front and rear of the unit
are kept clear at all times. Similarly, never tamper with the back-plane.
The audio racks have a redundant power supply (2 power supplies per rack) which are changed over
manually for CBA96R model and automatically for the newer type, SG3100. To change power supply,
make sure that two mains cords, one per power supply, are connected. For a CBAR96R, extract,
revolve and return the
CHOIX-ALIM
module. The SG3100 however is fully automatic, and LEDs
indicate the status of each power supply (green or red).
Two back-planes busses, in the heart of the rack, interconnect to all the modules. 11 connectors
(41612 type) on the main bus carry power, control signals and digital audio data. 2 connectors on the
auxiliary bus (BUS-2) handle the connection of Mix Box to the control surface, via the 37-pin Jaeger
connector fitted on the rear of the rack.
é
A rack has 3 reserved slots :
PWR for the Power Supply choice module or monitor card (see above)
PROCESSING for the processing module of a Mix Box (not used in a Stage Box)
CTRL for the control module (MC-64 for a Mix Box, SC-64 for a Stage Box).
And 8 slots designated A to H for the audio input output modules.
Rack under power with the power supplies
selection module’s LEDs showing :
+5 V
-15V
+15V
+48 V
The « voltages monitor » card displays
the proper values and working modes
for the two Power supplies.
The CBA96R rack is fitted with a Jaeger
rear connector when it’s a Mix Box
The new audio rack SG3100 is always fitted with a rear
Jaeger connector to be used as a Mix or a Stage Box
Warning : this unit has more than one power connection. Disconnect the two power
cords for a complete insulation.
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