Section I General Informationi; Introduction; Scope; Description - PS Engineering PM3000 Installation And Operation Manual

1. Section I General Information
1.1

Introduction

The PM3000 is a panel mounted, 6-place high-fidelity stereo intercom system (ICS). Please read this
manual completely before installation to minimize the risk of damage to the unit and to become familiar
with all the features.
1.2

Scope

This manual contains installation and operational instructions for the following PS Engineering unit:
Model
PM3000
1.3

Description

The PM3000 is a 6-place, panel-mounted intercom with multiple volume and VOX (voice activated
squelch) circuits using unified volume and squelch controls for the pilot, copilot and passengers.
With few controls for the pilot to use, the operation of the PM3000 is very straightforward. Yet the unit
outperforms its much more complicated competition. Although there is only one volume control knob,
when an adjustment is made to the volume control, many output amplifiers are being changed
simultaneously. Likewise, when the squelch control knob is adjusted, several VOX circuits are being
changed at the same time. Since the system is designed to use modern stereo headsets, it is not necessary
to balance the volume and squelch controls at the intercom.
A 3-position mode switch allows the pilot to select different configurations. The "ALL" mode places all
headsets on a party line. In the "ISO" mode, the pilot is isolated from all others and is connected to the
aircraft radio allowing un-interrupted radio communications. The third mode known as the "CREW"
mode allows the pilot and copilot to be isolated from the other positions.
The PM3000 has an automatic fail-safe interconnect to the aircraft radios. If power is disrupted to the
intercom for any reason, an internal relay will connect the pilot's headset to the aircraft radio allowing
continued radio communications.
A 2-color LED is green when power is on and changes to red when a Push to talk is pressed.
Provision for entertainment input allows the pilot, copilot and passengers the option to listen to music
during flight. During intercom or aircraft radio reception, this music will automatically mute to allow
communications without distraction. When the activity ceases, the Soft Mute™ circuit gradually returns
the music to the original listening volume. By depressing the "Mute" control (located on the Squelch
knob) once, it is possible to have the music remain at a constant level, regardless of any ICS or radio
traffic.
During various phases of flight, the degree of importance of the aircraft radio will vary. Because the "ISO"
mode connects the Pilot directly to the aircraft radio, select the "ISO" mode when the Pilot must have top
priority on radio transmissions.
Both pilot and copilot have transmit capabilities over the radio. The PM3000 only allows the voice of the
person who presses their PTT to be transmitted over the aircraft radio. If both pilot and copilot press the
200-193-0000
PS Engineering Incorporated
PM3000
Installation and Operation Manual
Description
6-place intercom system
page 1
Part Number
11930
Rev. 0, May, 1998