Crown Audio IQ-USM 810 User Manual
Page 32
Page 32
IQ-USM 810 IQ Digital Processor / Digital Mixer
IQ-USM 810 Reference Manual
6.2 Using the Multi-Function Control Port
The IQ System offers tremendous flexibility and the
Multi-Function Control Port feature provides an even
greater means of tapping into it. It can be used to
turn peripherals on and off, send signals to other
system components, receive digital and/or analog
signals from other components, and indicate status
of the input gates.
Pins 1 through 8 and 20 through 27 are assignable
to indicate mix channel gate status, (with logic=hi
for gate open or audio on), selected preset status, or
status of any logical binary control or sensor (most
likely gate and preset). Pins 20 through 27 addition-
ally can function as general AUX outputs. A total of 1
amp of current is available from all outputs. Pins 12
through 19 are assignable to logic preset recall and
general control for logical type objects within the
unit, and are assignable to any combination of mute
controls. Pins 30 through 37 function as analog
inputs and are assignable to any combination of
fader controls. Figure 6.8 shows pin assignments for
the Multi-Function Control Port.
6.2.1 Control Port Outputs
When Control Port outputs are turned on, +10VDC at
10 mA is supplied across the output to ground. A
total of 1 amp of current is available. Figure 6.8
shows pin assignments.
There are many possible uses for the Control Port
outputs. For example, they can be used to turn on
auxiliary cooling fans. To do this the output signal
might be used to close a relay. The relay would then
turn the fans on or off. This is shown in Figure 6.9.
Figure 6.8 Control Port Pin Assignments
Figure 6.9 A Sample Control Port Output Circuit
Figure 6.7 Unbalanced Audio Output Connections
Unbalanced output wiring is shown in Figure 6.7.
By monitoring the operating condition of amplifiers
with the IQ System software, the need for additional
cooling would be apparent. The same software
could then be used to turn on the appropriate Con-
trol Port input.