PS Engineering PM3000 Manual

1 202-193-0001PM3000 Pilot Guide & User Manual

9800 Martel Road

Lenoir City, TN 37772

www.ps-engineering.com

PM3000

High-fidelity, Stereo Intercom System

Pilot’s Guide

Part Number 11931(A), 11932

FAA-TSO

C50c

Also includes 11933A, 11934, non-FAA TSO units

202-193-0001 Revision 3

October 2006

Flying never sounded so good®

202-193-0001 2 PM3000-Pilot Guide & User Manual

Section I General Information

Introduction

The PM3000 is an FAA-TSO approved, panel mounted, 4- to 6-place high-

fidelity stereo intercom system (ICS). Please read this manual completely

before using the unit to become familiar with all its features.

Scope

This Pilots Guide contains operational instructions for the following PS

Engineering unit :

Model Description Part Number

PM3000 4-place intercom system w/pilot iso 11931

PM3000 Same as 11931, with aux audio input 11931A

PM3000 6-place intercom system w/crew 11932

PM3000 4-place w/digital recorder (non-TSO) 11933A

PM3000 6-place w/digital recorder (non-TSO) 11934

NOTE: installation instructions are contained in Installation Manual, part

number 200-193-xxxx, available at your authorized PS Engineering Dealer,

or www.ps-engineering.com/pm3000.shtml

Description

The PM3000 is a 4- or 6-place (depending on model), panel-mounted inter-

com with multiple volume and VOX (voice activated squelch) circuits us-

ing unified volume and squelch controls for the pilot, copilot and passen-

gers.

With few controls for the pilot to use, the operation of the PM3000 is very

straightforward. Yet the unit outperforms its much more complicated com-

petition. Although there is only one volume control knob, when an adjust-

ment is made to the volume control, all output amplifiers are being changed

simultaneously. Likewise, when the squelch control knob is adjusted, sev-

eral 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.

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.

Provision for entertainment input allows the pilot, copilot and passengers

3 202-193-0001PM3000 Pilot Guide & User Manual

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 PTT at

the same time, the copilot will override. When either pilot or co-pilot

presses PTT, all other microphones are disabled. The pilot can regain prior-

ity by switching the unit off.

Approval Basis

The PM3000, part number 11931(A) or 11932 is FAA-approved under

TSO-C50c, and RTCA, Inc. DO-214. Due to the fact that there is no TSO

for the recorder function in the 11933 and 11934, these units are not fully

TSO-approved. It is the responsibility of the installer to determine the ap-

proval basis for these units.

Specifications

Input power: 13.8 - 27.5 Volts DC

Current Drain: < 200 mA (Externally fused at 1 Amp)

Headphone Impedance: 150-1000 Ω(typical)

Audio Distortion: <1.2% @ 50mW into 150 Ωload

Aircraft Radio Impedance: 1000 Ω(typical)

Mic Frequency Response: ±3 dB, 350 Hz — 6000 Hz

Music Frequency Response ±3 dB, 200 Hz – 15kHz

Unit weight: 12 Ounces (0.34 kg)

Dimensions:1.25" H x 3.00" W x 5.50" D (3.2 x 7.6 x 14.0 cm)

Environmental and technical qualifications: RTCA DO-160C/DO-214

Temperature -20º to +55ºC

License Requirements

None

202-193-0001 4 PM3000-Pilot Guide & User Manual

Section II Operation

PM3000 (11931(A) & 11933A)

Adjusting the Volume (1)

The PM3000 volume control knob adjusts the loudness of the inter-

com and music only. The volume control on the PM3000 does not

affect the volume level of the aircraft radio. This allows the aircraft

radio and intercom volume to be balanced independently. The vol-

ume control affects the music level for the pilot and copilot posi-

tions.

By turning the control clockwise, the audio level will increase. The

PM3000 has individual output amplifiers for each headset in the

system and provides plenty of audio output power. NOTE: Volume

level will not change with the number of headset installed.

PM3000 w/ Crew (11932 or 11934)

1 2

5 202-193-0001PM3000 Pilot Guide & User Manual

Music # 2 passenger volume in CREW mode (11932 and 11934)

version is a fixed level, and controlled locally by the headphone vol-

ume control or music device.

Adjusting the Squelch Control (2)

This VOX operated intercom keeps all microphone channels off

(silent) while the pilot, copilot or passengers are not speaking. This

reduces background noise from the aircraft. Only when someone

speaks will their microphone turn on, allowing the audio to pass

through the system. Although there is just one squelch control, there

are actually three separate squelch threshold circuits. One circuit

each for the pilot, copilot, and passengers. Only the microphone ac-

tually in use is open, reducing noise in the system.

With the engine running, set the squelch control knob by slowly ro-

tating the squelch control knob clockwise until you no longer hear

the background noise in the earphones. When the microphone is

positioned properly near the lips, normal speech levels should open

the channel. When you have stopped talking, there is a delay of

about one half second before the channel closes. This prevents

squelch closure between words, and helps eliminate choppy inter-

com conversations.

Indicator LED (3)

The green LED in the center indicates green when the unit is turned

on, and changes to red during transmit by either the pilot or copilot.

The LED intensity on P/N 11931A and 11933A may be controlled

by the aircraft dimmer system, if installed, The LED on the

11932/11934 is a fixed intensity.

Mode Select (4)

The center switch is a mode control that allows the pilot to tailor the inter-

com function to suit flight conditions. Regardless of configuration, the

pilot will always hear the aircraft radio. NOTE: If there is a power failure

to the PM3000, or if the power switch is turned off, the copilot will not

hear the aircraft radio. Only the pilot is connected directly to the aircraft

radio.

ISO (Up Position): The pilot is isolated from the intercom and is connected

only to the aircraft radios. He will hear the aircraft radio reception (and

sidetone during radio transmissions). Copilot and passengers will hear

themselves and music but not the aircraft radio traffic.

202-193-0001 6 PM3000-Pilot Guide & User Manual

ALL (Middle position): All parties will hear the aircraft radio, intercom,

and music. However, during any ICS conversation, the music vol-

ume automatically mutes. The music volume increases gradually

back to the original level after communications have been com-

pleted.

CREW (11932, 11934 only) (down position): Pilot and copilot posi-

tions will hear aircraft radio and music number one. Passengers will

only hear other passenger’s intercom, and music number 2. Music

number two will not mute during intercom conversation.

Music Mute Control

Normally, any radio traffic or intercom conversation will mute the

music heard in ALL mode, or for the front in CREW. However,

when the crew desires uninterrupted music, the PM3000 can be

placed in the Karaoke Mode, for singing along. Press the right knob

(squelch) once to activate Karaoke mode, so the music will not be

muted. Press again to restore the SoftMute™ function

Intercom Recorder System (11933A, 11934 only)

The Intercom Recording System is a digital recording system allowing

automatic storage and playback of aircraft radio traffic.

Operating as a continuous loop recorder, (first message received will be the

last heard), the recorder has one minute of recording time or up to 16 mes-

sages. With its own built in VOX circuit, there are no buttons to press to

start recording. The system automatically begins to record the instant the

radio becomes active. Aircraft radio audio applied to pilots headset is re-

corded and only the pilot will hear the playback audio, in one ear.

Operation

Recording is automatic; there is no action required by the pilot. To play

back the last recorded message, simply press the momentary switch associ-

ated with the IRS. Each additional press of the button will play the preced-

ing recorded message. You must wait for the message to finish playing

before accessing the prior message.

To cancel the playback, press and hold the playback button for two sec-

onds. The next time the button is pressed, the next earlier message will be

heard.

7 202-193-0001PM3000 Pilot Guide & User Manual

Section III Warranty and Service

In order for the factory warranty to be valid, the installations in a certified

aircraft must be accomplished by an FAA-certified avionics shop and author-

ized PS Engineering dealer. If the unit is being installed by a non-certified indi-

vidual in an experimental aircraft, a factory-made harness must be used for the war-

ranty to be valid.

PS Engineering, Inc. warrants this product to be free from defect in material and

workmanship for a period of one year from the date of installation. During this one-

year warranty period, PS Engineering, Inc., at its option, will send a replacement

unit at our expense if the unit should be determined to be defective after consulta-

tion with a factory technician.

This warranty is not transferable. Any implied warranties expire at the expiration

date of this warranty. PS Engineering SHALL NOT BE LIABLE FOR INCIDEN-

TAL OR CONSEQUENTIAL DAMAGES. This warranty does not cover a defect

that has resulted from improper or unreasonable use or maintenance as determined

by us. This warranty is void if there is any attempt to dissemble this product without

factory authorization. This warranty gives you specific legal rights, and you may

also have other rights, which may vary from state to state. Some states do not allow

the exclusion of limitation of incidental or consequential damages, so the above

limitation or exclusions may not apply to you.

Factory Service

The PM3000 is covered by a one-year limited warranty. See warranty information.

Contact PS Engineering, Inc. at (865) 988-9800 or through www.ps-engine.com/

support.shtml, before you return the unit. This will llow the service technician to

provide any other suggestions for identifying the problem and recommend possible

solutions.

Units that arrive for repair without a method of payment will be returned via UPS

COD. PS Engineering will not be responsible for any item shipped via US Mail.

After discussing the problem with the technician and you obtain a Return Authori-

zation Number, ship product to:

PS Engineering, Inc.

Service Department

9800 Martel Road

Lenoir City, TN 37772

(865) 988-9800 FAX (865) 988-6619

www.ps-engineering.com

NOTE: PS Engineering will not be responsible for units returned by US

Mail, or in other than the original packaging.

Units received without either an RMA, or a detailed description of the

problem AND a contact telephone number, will be refused.

202-193-0001 8 PM3000-Pilot Guide & User Manual

PS Engineering, Inc. 2006 ©

Copyrighted information in this manual is subject to change without notice. PS Engineering

reserves the right to improve or change the products or contents of this manual, without

notification of any person or agency. The contents of this pilot’s guide may be downloaded,

stored and reprinted for personal use provided that this copyright information is included.

Commercial use is strictly prohibited. For further information contact the Publications Man-

ager at PS Engineering, Inc., 9800 Martel Road, Lenoir City, TN 37772. Phone (865) 988-

9800

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