Instruction manual

Networked PIP Series

Reference Manual

page 12

Advanced Features and Options

Using the AUX Connector

The AUX connector offers a means to tap some of the ﬂ exibility of the Harman Pro System

Architect. It can be used to enable peripherals, send a signal to another system component,

and send a line-level audio signal of the ampliﬁer’s output.

The AUX connector is an RJ-11 type. Pins 3 and 4 are used as a control output. Pins 2 and

3 function as a control input. Pin 5 is a voltage supply pin for use with the control input.

AUX Input

In its basic input mode, the AUX input allows an external input source to be detected by

the software. This input can be a temperature sensor, door closure switch, or operator

pushbutton. It can be used by the software to change conﬁguration settings on any or all

system devices. See the Harman Pro System Architect Help ﬁles for exact information.

Pin 4 of the AUX connector is a power-supply pin designed for use by the AUX input pin.

Since the AUX input ﬂoats low, the AUX input can be triggered by just a simple switch

closure between it and the AUX power pin. No external power supply is needed to operate

the AUX input under most conditions. If the AUX input is used to sense an externally

supplied voltage it must be scaled so that low inputs are between 0 and 1.6 VDC, and high

inputs are between 4 and 15 VDC. Externally supplied voltages should be referenced to

AUX ground on pin 3.

Both, the PIP-Lite and the PIP-USP4-CN feature AUX input enhance modes. The PIP-Lite

and the USP4-CN supports seven modes. The ﬁrst six modes allow the AUX input to mute

or power-down either or both channels; the seventh allows for incrementing the preset.

The AUX Input Inversion Control allows either a high or low AUX input to activate these

functions. These modes can be used for emergency mute 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.

Wiring a Remote Preset Selector