Instruction manual

page 55
Reference Manual
Networked PIP Series
between 4 and 15 VDC. Externally supplied voltages should be referenced to AUX ground
on pin 3.
The AUX input features seven enhanced modes. The first six modes allow the AUX input to
mute or power-down either or both channels. The AUX Input Inversion Control allows either
a high or low AUX input to activate these functions. These modes can be used for emer-
gency shutdown for a fire alarm system. A simple switch closure from the alarm system
would disable an entire sound system when a fire alarm is activated.
7.1.3 Listen Bus Wiring
The AUX port is also used for the Listen Bus or Foldback connection. Pins 1 and 6 of the
connector provide a balanced line-level audio output that can be selectively driven by either
channel under software control. Multiple IQ-PIP-USP3 modules can have their Listen Bus
outputs wired onto a single bus allowing the system operator to listen to any of their out-
puts.
Figure 7.3 Listen Bus Wiring
6
5
4
321
AUX
CONNECTOR
TO BALANCED
INPUT
+
–
136763-7_4-08_networked_pip-series_reference_manual.fm Page 55 Monday, March 17, 2008 11:17 AM