PS Engineering PMA8000D Installation Manual

9800 Martel Road

Lenoir City, TN 37772

www.ps-engineering.com

Document P/N 200-890-0304

Rev. 6, Oct. 2014

For units with serial number BD1023 and above.

Audio Selector Panel with Marker Beacon Receiver

High-fidelity Stereo Intercom

Designed specifically for Dual Audio Panel Configurations

System Installation and Operation Manual

FAA- TSO C50c, C35d

EASA ETSO C50c, 2C35d

Patented under one or more of the following;

No. 4,941,187; 5,903,227; 6,160,496 and 6,493,450

PS Engineering, Inc. 2014 ©

Copyright Notice

Any reproduction or retransmittal of this publication, or any portion thereof, without the expressed written permission of PS
Engineering, Inc. is strictly prohibited. For further information contact the Publications Manager at PS Engineering, Inc., 9800
Martel Road, Lenoir City, TN 37772. Phone [phone], email [e-mail].

In certified aircraft, warranty is not valid unless this product is installed by an

Authorized PS Engineering dealer.

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Table of Contents

Section I – GENERAL INFORMATION............................................. 1-1

1.1 INTRODUCTION.............................................................................................................................................1-1

1.2 SCOPE...............................................................................................................................................................1-1

1.3 EQUIPMENT DESCRIPTION........................................................................................................................1-1

1.4 APPROVAL BASIS.......................................................................................................................................... 1-2

1.5 SPECIFICATIONS...........................................................................................................................................1-3

1.6 EQUIPMENT SUPPLIED ...............................................................................................................................1-4

1.7 EQUIPMENT REQUIRED BUTNOT SUPPLIED ....................................................................................... 1-4

1.8 OPTIONAL ITEMS..........................................................................................................................................1-4

1.9 LICENSE REQUIREMENTS..........................................................................................................................1-4

Section II - INSTALLATION...................................................... 2-1

2.1 GENERAL INFORMATION...........................................................................................................................2-1

2.1.1 SCOPE ............................................................................................................................. 2-1

2.1.2 CERTIFICATION REQUIREMENTS ...................................................................................... 2-1

2.2 UNPACKING AND PRELIMINARY INSPECTION .....................................................................................................2-1

2.3 EQUIPMENT INSTALLATION PROCEDURES..........................................................................................................2-1

2.3.1 COOLING REQUIREMENTS ................................................................................................ 2-1

2.3.2 MOUNTING REQUIREMENTS............................................................................................. 2-1

2.3.3 AUDIO PANEL MOUNTING RACK INSTALLATION ............................................................. 2-1

2.3.4 AUDIO PANEL TRAY AND CONNECTOR ASSEMBLY ......................................................... 2-2

2.4 CABLE HARNESS WIRING ...................................................................................................................................2-2

2.4.1 ELECTRICAL NOISE........................................................................................................... 2-2

2.4.2 POWER.............................................................................................................................. 2-3

2.4.3 AUDIO PANEL INTERFACE ................................................................................................ 2-3

2.4.4 COCKPIT SPEAKER............................................................................................................ 2-3

2.4.5 BACKLIGHTING................................................................................................................. 2-3

2.4.6 UNSWITCHED INPUTS........................................................................................................ 2-4

2.4.7 "SWAP" MODE.................................................................................................................. 2-4

2.4.8 BLUETOOTH TELEPHONE FUNCTION ................................................................................ 2-4

2.4.9 PUBLIC ADDRESS MODE...................................................................................................2-5

2.4.10 PA MUTE (J2, PIN 12)..................................................................................................... 2-6

2.4.11 MISCELLANEOUS LOGIC OUTPUT (J2, PIN 18) ............................................................... 2-7

2.4.12 MARKER HIGH SENSITIVITY (J2 PIN 13) ........................................................................ 2-7

2.4.13 DUAL AUDIO PANEL CONNECTIONS............................................................................... 2-7

2.4.14 CVR OUTPUT (J2, PIN 4) PART NUMBERS –0314, -0315, -0316, -0317, -0334, -0335, -

0336 AND -337 ONLY)................................................................................................................. 2-7

2.5 INTERCOM WIRING..............................................................................................................................................2-7

2.5.1 ENTERTAINMENT INPUTS.................................................................................................. 2-7

2.5.2 ENTERTAINMENT MUTING ................................................................................................ 2-8

2.5.3 CONFIGURING MUSIC INPUT WITH FUNCTION KEYS........................................................ 2-9

2.5.4 PLAYBACK BUTTON INSTALLATION................................................................................. 2-9

2.5.5 PASSENGER INTERCOM EXPANSION (INTELLIPAX)......................................................... 2-9

2.6 MARKER BEACON INSTALLATION ....................................................................................................................2-10

2.6.1 MARKER ANTENNA INSTALLATION................................................................................ 2-10

2.6.2 EXTERNAL MARKER LIGHTS.......................................................................................... 2-10

2.6.3 MIDDLE MARKER SENSE................................................................................................ 2-10

2.6.4 MARKER SENSITIVITY SWITCH (J2 PIN 13) ....................................................................2-10

2.7 ADJUSTMENTS...................................................................................................................................................2-10

2.8 COMMUNICATIONS ANTENNA INSTALLATION NOTES.......................................................................................2-12

2.9 PMA8000D PIN ASSIGNMENTS.........................................................................................................................2-13

2.10 WIRING CHECKOUT..........................................................................................................................................2-14

2.11 UNIT INSTALLATION .........................................................................................................................................2-14

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page ii Rev. 6, Oct. 2014

2.12 OPERATIONAL CHECKOUT ...............................................................................................................................2-14

2.12.1 REQUIRED TEST EQUIPMENT........................................................................................ 2-14

2.12.2 AUDIO PANEL TEST...................................................................................................... 2-14

2.12.3 MARKER CHECKOUT .................................................................................................... 2-15

2.12.4 BLUETOOTH TELEPHONE CHECKOUT........................................................................... 2-15

2.12.5 INTERNAL RECORDER CHECKOUT................................................................................ 2-15

2.12.6 FUNCTION BUTTON CHECKOUT.................................................................................... 2-15

2.12.7 REPEAT FOR OTHER AUDIO PANEL................................................................................ 2-16

2.13 FINAL INSPECTION............................................................................................................................................2-16

Section III OPERATION..........................................................3-1

3.1 SCOPE...............................................................................................................................................................3-1

3.2 COMMUNICATIONS TRANSMIT (XMT) SELECTION (2) ......................................................................................3-1

3.3 AUDIO SELECTOR (4)..........................................................................................................................................3-2

3.4 BLUETOOTH TELEPHONE....................................................................................................................................3-2

3.4.1 CELL PHONE SIDETONE .................................................................................................... 3-3

3.5 SPEAKER AMPLIFIER (5).....................................................................................................................................3-3

3.6 MARKER BEACON OPERATION (9) .....................................................................................................................3-4

3.7 INTERCOM OPERATION.......................................................................................................................................3-4

3.7.1 INTELLIVOX® VOX-SQUELCH.......................................................................................... 3-4

3.7.2 INTERCOM VOLUME CONTROL (7)................................................................................... 3-5

3.7.3 INTERCOM MODES (8) ...................................................................................................... 3-5

3.8 MUSIC AND MUSIC MUTING (6)..........................................................................................................................3-6

3.8.1 MUSIC IN PILOT ISO MODE............................................................................................... 3-7

3.9 UTILITY JACK.....................................................................................................................................................3-7

3.9.1 AUDIO ADVISORY INPUT.................................................................................................. 3-7

3.9.2 MUSIC INPUT .................................................................................................................... 3-8

3.10 MUSIC DISTRIBUTION .........................................................................................................................................3-8

3.10.1 MUSIC FUNCTION (C) (MUSIC DISTRIBUTION CONTROL)(COPILOT’S AUDIO PANEL

ONLY) 3-8

3.10.2 MUSIC 1 VOLUME........................................................................................................... 3-9

3.11 SMART FUNCTION KEYS (SFK)........................................................................................................................ 3-10

3.11.1 INTERCOM FUNCTION (A) (ALTERNATE INTERCOM FUNCTION).................................. 3-11

3.11.2 MONITOR FUNCTION (B) (MONITOR MODE)................................................................ 3-11

3.12 BLUETOOTH® INTERFACE ................................................................................................................................ 3-11

3.12.1 PAIRING AND UNPAIRING BLUETOOTH DEVICES .......................................................... 3-11

3.12.2 POWER ON ANNOUNCEMENT ........................................................................................ 3-12

3.13 INTERNAL RECORDER AND PLAYBACK.............................................................................................................3-12

Section IV – Warranty and Service 4-1

4.1 WARRANTY......................................................................................................................................................... 4-1

4.2 FACTORY SERVICE..............................................................................................................................................4-1

Appendix A – PMA8000D Installation Drawings .................................................................................A

Appendix B –PMA8000D Radio Interconnect ..................................................................................B

Appendix C – PMA8000D Audio Interconnect ..................................................................................C

Appendix D – Instructions for FAA Form 337 and continuing airworthiness ...................................D

8.1 INSTRUCTIONS FOR FAA FORM 337, AUDIO PANELS........................................................................................... D

8.2 INSTRUCTIONS FOR CONTINUING AIRWORTHINESS, AUDIO SYSTEM ................................................................... D

Appendix E – RTCA DO160D Environmental Qualification Form.........................................................E

Rev

Date

Change

0

January 2012

New Release of manual p/n -0304, for PMA8000D

1

March 2012

Add stuck microphone protection

2

April 2012

Add 5V lighting version -0305

3

June 2013

Add Grey bezel versions

4

December 2013

Add CVR Versions

5

May 2014

Add vertical versions

6

October 2014

Updated Unswitched 1 configuration

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page 1-1 Rev. 6, Oct. 2014

Section I – GENERAL INFORMATION

1.1 INTRODUCTION

The PMA8000D represents another evolutionary step in cockpit audio control and intercommunications
utility. Using our patented IntelliVox® design, front panel utility jack, and pilot programmable configura­tions, this marks the next level of audio control. The unit is designed for outstanding ergonomics and visual­ly defined mode annunciation and selection. The PMA8000D is specifically designed to be used in a dual
audio panel environment; where the pilot and copilot positions have independent control over the radio au­dio control. The PMA8000D units communicate information between the units to make the operation logi­cal and utilitarian, and avoid operations that are inconsistent with radio and cockpit communication practic­es.

Before installing and/or using this product, please read this manual completely. This will ensure that you
will take full advantage of all the advanced features in the PMA8000D.

1.2 SCOPE

This manual provides detailed installation and operation instructions for the PS Engineering PMA8000D­series of Audio Selector Panel/Intercom Systems. This includes the following units:

Unit Part Number

Backlighting

Bezel

CVR Output

Vertical

050-890-0304

14/28 VDC

Black

No

No

050-890-0305

5 VDC

Black

No

No

050-890-0306

14/28 VDC

GreyNoNo

050-890-0307

5 VDC

GreyNoNo

050-890-0314

14/28 VDC

Black

Yes

No

050-890-0315

5 VDC

Black

Yes

No

050-890-0316

14/28 VDC

Grey

Yes

No

050-890-0317

5 VDC

Grey

Yes

No

050-890-0324

14/28 VDC

Black

No

Yes

050-890-0325

5 VDC

Black

No

Yes

050-890-0326

14/28 VDC

GreyNoYes

050-890-0327

5 VDC

GreyNoYes

050-890-0334

14/28 VDC

Black

Yes

Yes

050-890-0335

5 VDC

Black

Yes

Yes

050-890-0336

14/28 VDC

Grey

Yes

Yes

050-890-0337

5 VDC

Grey

Yes

Yes

Each ship set contains two units and installation kits.

1.3 EQUIPMENT DESCRIPTION

The PMA8000D is a state-of-the-art audio isolation amplifier and audio selector that contains an automatic
voice activated (VOX) intercom system and integral marker beacon receiver. It can switch three transceiv­ers (COM 1, COM 2, COM 3) and six receivers (NAV 1, NAV 2, ADF, AUX (DME), and MKR.

The PMA8000D was designed specifically for installations requiring Dual Audio Panels, because the pri­mary audio panel sends status information to the secondary audio panel to prevent undesirable operation
modes such as simultaneous transmission on the same radio by both crew members, and primary control
over the intercom modes.

A full duplex cellular telephone interface allows the PMA8000D to act as an audio connection between
aircraft headphone and microphones and specific aircraft approved (FAA/FCC) cellular telephone equip­ment, through the front mounted jack, or with the Bluetooth® interface.

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page 1-2 Rev. 6, Oct. 2014

Warning: Use of non-aviation approved cellular telephone equipment may be prohibited byFCCregulation.

PS Engineering is not responsible for unauthorized airborne use of cellular telephones.

For airborne use, the PMA8000D must be interfaced with an approved system.

There are five unswitched inputs, available for traffic or EGPWS, autopilot disconnect, and/or radar altime­ter warning, with the fifth unswitched input through a front-mounted utility jack, when it is configured to act
as a fifth unswitched input. Unswitched input 3 is adjustable, see page § 2.4.8

Pushbuttons select the receiver audio source provided to the headphones. A SPR button allows the user to
listen to the receiver(s) selected on the cabin speaker. Except for the unswitched inputs, all speaker audio is
muted during transmit. Unswitched inputs 1, 3, and 4 are always presented to the aircraft speaker.
Unswitched input 2 will be presented to the speaker when the front panel SPR push button has been select­ed. Pushbutton switches select one of the communication transceivers.

A fail-safe mode connects the crewmembers’ headphone and microphone to COM 1 if power is removed for
any reason, or if the power switch is placed in the Off (Fail-safe) position.

NOTE: Both crew members are connected to COM 1 in fail-safe. There is no priority, and in some cases
microphone loading may make it necessary to unplug one crew member’s microphone for optimum trans­mission quality.

A voice activated (VOX) intercom is included in the PMA8000D. This system has PS Engineering’s patent­ed IntelliVox® circuitry that eliminates manual adjustments. The intercom system incorporates pilot isolate,
all and crew modes, two independent stereo music inputs with "SoftMute™". Intercom volume control is
through two concentric front panel knobs and a pushbutton intercom mode switch. The small volume knob
controls the intercom level for the pilot and copilot, while the large knob on the copilot audio panel controls
the passenger intercom volume. Intercom squelch is automatic.

A 3-light, 75 MHz Marker Beacon receiver is integrated in each PMA8000D. This provides the necessary
Marker Beacon lights and audio indications necessary for that portion of an Instrument Landing System
(ILS) approach. A pushbutton labeled MKR allows the pilot select high or low sensitivity as well as test and
mute modes.

In the PMA8000D, a Bluetooth® wireless interface is available for wireless telephone and music connec­tion.

1.4 APPROVAL BASIS

FAA TSO Approval.
The PMA8000D-series Audio Selector Panels are FAA approved under TSO C50c (Audio Amplifiers) and

TSO C35d (Marker Beacon Receivers), ETSO C50C/ and 2C53d.
All systems comply with relevant portions of EUROCAE RTCA MPS WG No. 7/70, DO-143 and (Marker

Beacon Receivers), ED-14C/DO-160C (Environmental Conditions and Test Procedures for Airborne
Equipment), ED12B/DO-178B, Level D (Software Considerations for Airborne Equipment) and ED-
18/DO-214 (Audio Systems Characteristics and Minimum Operational Performance Standards for Aircraft
Audio Systems).

Operation is subject to the following conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that may cause undesired opera­tion.

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page 1-3 Rev. 6, Oct. 2014

1.5 SPECIFICATIONS

TSO COMPLIANCE

Marker Beacon:

FAA TSO C35d, Class A ETSO 2C35d

Audio Selector/Intercom:

FAA TSO C50c, Class 1a ETSO C50c

APPLICABLE DOCUMENTS:

RTCA/DO-214 RTCA/DO-143 RTCA/DO-160D
RTCA/DO-178B DO-254

ENVIRONMENTAL Qualifications:

A1D1CABSMXXXXXXZBABATBXXE2XXX

Operating Temperature Range:

-15º C to 55ºC

Altitude:

Up to 50,000 feet in an non-pressurized area

DIMENSIONS:

Height: 1.3 in. (3.3 cm) Width: 6.25 in. (16.9 cm)
Depth behind panel 7.15 in. (18.16 cm)

WEIGHT

PMA8000D Unit
Rack with connectors

1.34 lb. (0.61 kg)

0.51 lb. (0.24 kg)

POWER REQUIREMENTS (Including Internal Lighting):

Voltage:

11 to 33 VDC

Maximum Current:

2.5 Amp (Externally protected by a 5A pull-type break­er)

Audio Selector Specifications

Audio selector panel input impedance:

510 

Input Isolation:

-60 dB (min.)

Speaker Muting:

-60 dB (min.)

Speaker Output (into 4 ) with no clipping

14 VDC:
28 VDC:

3 Watts (min.)
10 Watts (min.)

Receiver Inputs:

9 (COM 1, COM 2, COM 3, NAV 1, NAV 2, ADF,
DME, MKR, AUX)

Unswitched Inputs:

5 (including front jack)

Transmitter Selections:

6 (COM 1, COM 2, COM 3
Com1/2 COM 1/3, COM 2/3)

Speaker Impedance:

4 

Headphone Impedance:

150 – 1000 

Headphone Output:

38 mW each headset, no clipping <1% THD typical

Microphone Impedance:

150 - 600 

Bluetooth Radio (PMA8000D -0304 only)

Class 3, FCC ID QOQWT32AE

Intercom Specifications

Intercom Positions:

6 places (with individual IntelliVox® circuits)

Music Inputs:

2, (Independent, Stereo)

Music Muting:

>-30 dB "Soft Mute" when COM or intercom active.

Distortion:

<1% THD @ 38 mW into 150

Mic Freq. Response, 3 dB:

300 Hz - 6000 Hz

Music Freq. Response, 3 dB:

10 Hz – 26 kHz

MARKER BEACON RECEIVER:

Frequency:

75 MHz Crystal Controlled

Sensitivity:

Low:
High:

Capable of: (preset at factory for field application)
1000 Volts (Hard) (360 to 570 V soft)
200 Volts (Hard) (130 to 200 V soft)

Selectivity:

-6 dB at ±10 kHz

-40 dB at ±120 kHz

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page 1-4 Rev. 6, Oct. 2014

External Lamp Output:

7.5 (±4 VDC unloaded, at maximum brightness) VDC
positive when active, max. current 125 mA

MM Sense:

Active high (4.5 ± 1.0VDC)

1.6 EQUIPMENT SUPPLIED

One ship set includes 2 ea. of the following units:

Model

Description

Part Number

PMA8000D

Stereo Audio Selector Panel with Marker Beacon includes utility jack, Blue­tooth® interface and Internal Recorder System. This supports three com trans­ceivers.
Designed specifically for Dual Audio Panel Installation.

2 ea. 050-890-0304

PMA8000D

Same as above, with 5VDC backlighting

2 ea 050-890-0305

PMA8000D

Same as -0304, with Gray Bezel option

2 ea. 050-890-0306

PMA8000D

Same as -0305, with Gray Bezel option

2 ea. 050-890-0307

PMA8000D

Same as -0304, with CVR output

2 ea 050-890-0314

PMA8000D

Same as -0305, with CVR output

2 ea 050-890-0315

PMA8000D

Same as -0306, with CVR output

2 ea. 050-890-0316

PMA8000D

Same as -0307, with CVR output

2 ea. 050-890-0317

PMA8000D

Same as -0304, with Vertical Orientation

2 ea 050-890-0324

PMA8000D

Same as -0305, with Vertical Orientation

2 ea. 050-890-0325

PMA8000D

Same as -0306, with Vertical Orientation

2 ea. 050-890-0326

PMA8000D

Same as -0307, with Vertical Orientation

2 ea 050-890-0327

PMA8000D

Same as -0304, with CVR and Vertical Orientation

2 ea 050-890-0334

PMA8000D

Same as -0305, with CVR output and Vertical Orientation

2 ea. 050-890-0335

PMA8000D

Same as -0306, with CVR output and Vertical Orientation

2 ea. 050-890-0336

PMA8000D

Same as -0307, with CVR output and Vertical Orientation

2 ea. 050-890-0337

PMA8000D Installation Kit: 250-890-0000 (2 kits required for dual installation)

Description

Quantity

Part Number

Installation rack assembly

1

430-890-0040

Rack back plate

1

430-890-0050

44-pin connector kit

2

120-891-2045

Backshell, connector

2

625-025-2465

Backshell Mounting Blocks

2

431-891-0100

4 40 X 7/16 screw w/nylon patch

4

475-440-0007

4 40 X 3/8 screw w/nylon patch

4

475-440-1038

4-40 x ¼” screw with lock washer

2

475-440-0001

Grounding Solder Lug

2

475-009-0001

Cable Clamp

1

625-001-0002

#6-32 x ½” Flat head Philips screw

6

475-632-0012

#6-32 Clip Nut

6

475-630-0002

1.7 EQUIPMENT REQUIRED BUT NOT SUPPLIED

a. Circuit Breaker: 1 ea; 5 amp PULL TYPE REQUIRED for PMA8000D
b. Speaker, 4 
c. Headphone Jacks (Stereo, as Required)
d. Microphone Jacks (as Required)
e. Headphones, 150  (Stereo), up to 6 as required
f. Microphones, up to 6 as required

g. Marker Antenna (75 MHz, VSWR <1:1.5, and appropriate for the airspeed)
h. Interconnect Wiring

1.8 OPTIONAL ITEMS

a. Music Patch Cord, 3.5mm to 2.5mm, PS Part Number 425-006-2535
b. Passenger intercom unit, IntelliPAX, if desired 11636Remote

1.9 LICENSE REQUIREMENTS

None

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page 1-5 Rev. 6, Oct. 2014

PMA8000D Bluetooth™ Radio approval:

 FCC ID: QOQWT32AE
 Industry Canada ID: 5123A-BGTWT32AE
 CE EMC Directive 89/336/EEC as amended by Directives 92/31/EEC and 93/68/EEC

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page 2-1 Rev. 6, Oct. 2014

Section II - INSTALLATION

2.1 GENERAL INFORMATION

2.1.1 SCOPE

This section provides detailed installation and interconnection instructions for the PS Engineering
PMA8000D Audio Selector Panel/Intercom/ with internal Marker Beacon.

Please read this manual carefully before beginning any installation to prevent damage and post-installation
problems. Installation of this equipment requires special tools, test equipment (refer to section 2.12.1)

and knowledge as required by 14 CFR 65.81 (b).

2.1.2 Certification Requirements

NOTE

The PMA8000D requires specialized knowledge and tools for an effective installation. An appropriately
rated Certified Aircraft Repair Station must install this equipment in accordance with applicable regula­tions. PS Engineering, Incorporated warranty is not valid unless the equipment is installed by an authorized
PS Engineering, Incorporated dealer.
Failure to follow any of the installation instructions, or installation by a non-certified individual or agency
will void the warranty, and may result in an unairworthy installation.

2.2 Unpacking and Preliminary Inspection

Use care when unpacking the equipment. Inspect the units and parts supplied for visible signs of shipping
damage. Examine the unit for loose or broken buttons, bent knobs, etc. Verify the correct quantity of com­ponents supplied with the list in Section 1.6. If any claim is to be made, save the shipping material and con­tact the freight carrier. Do NOT return units damaged in shipping to PS Engineering. If the unit or accesso­ries show any sign of external shipping damage, contact PS Engineering to arrange for a replacement.
Under no circumstances attempt to install a damaged unit in an aircraft. Equipment returned to PS Engi­neering for any other reason should be shipped in the original PS Engineering packaging, or other UPS ap­proved packaging.

2.3 Equipment Installation Procedures

2.3.1 Cooling Requirements

Forced air-cooling of the PMA8000D is not required. However, the units should be kept away from heat
producing sources (i.e. defrost or heater ducts, dropping resistors, heat producing avionics) without ade­quate cooling air provided.

2.3.2 Mounting Requirements

Each PMA8000D must be rigidly mounted to the instrument panel of the aircraft structure, within view and
reach of the flight crew position. Installation must comply with FAA Advisory Circular AC 43.13-2B, or
other FAA-approved aircraft technical data. The unit may be mounted in any area where adequate clearance
for the unit and associated wiring bundle exist.

To prevent noise, avoid installing the unit close to high current devices or systems with high-voltage pulse
type outputs, such as DME or transponders. Avoid running the interconnecting bundles near any high cur­rent wires.

2.3.3 Audio Panel Mounting Rack Installation

Remove the unit from the mounting tray by unscrewing the 3/32" hex-head screw that is in the center of the
unit. Use caution to avoid hitting the photo-detector lens which is located directly above the hex-head
screw. Carefully slide the unit free of the tray. Set the unit aside in a safe location until needed. Install the

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page 2-2 Rev. 6, Oct. 2014

tray using six #6-32 clip nuts (475-630-0002), and six FHP #6-32 x ½" screws (475-632-0012). The audio
selector panel must be supported at front and rear of the mounting tray.

2.3.4 Audio Panel Tray and Connector Assembly

The rack back plate mates with two 44-pin connectors in each PMA8000D. The connectors are a sub­miniature crimp-type, and require the use a hand crimp tool, from table below (or equiv.). The 44 pin con­nectors are mounted to the tray back plate (430-890-0050) with quantity 4, #4-40 x 3/8” screws (475-440-

1038) and the quantity 2, back shell retainer mounting blocks (431-891-0100). Ensure that proper strain
relief and chafing precautions are made during wiring and installation, using the cable clamp (625-001-

0002).
Because the connector back shell (625-025-2465) is a single piece, the harness should be passed through the

shell before the pins are inserted into the connector.
Two grounding solder lugs are provided (475-009-0001), which may be attached to the rear mounting plate

with 2 ea #4-40 x ¼” (475-440-0001) screws with captivated lock washers. These provide a convenient
location to connect the shield ground terminations.

Manufacturer

Crimping Tool

Positioner

Extraction tool

AMP

601966-1

601966-6

91067-1

Daniels

AFM8

K42

M24308-1

ITT-Cannon

995-0001-584

995-0001-739

91067-1

Table 2-1 Connector Pin crimping tools

2.4 Cable Harness Wiring

Referring to the appropriate Appendix, assemble a wiring harness as required for the installation. All wires
must be MIL-SPEC in accordance with current regulations. Two- and three-conductor shielded wire must
be used where indicated, and be MIL-C-27500 or equivalent specification. Proper stripping, shielding and
soldering technique must be used at all times. It is imperative that correct wire be used.

Refer to FAA Advisory Circular 43.13-2B for more information. Failure to use correct techniques may re­sult in improper operation, electrical noise or unit failure. Damage caused by improper installation will void
the PS Engineering warranty.

2.4.1 Electrical Noise

Due to the variety and the high power of radio equipment often found in today's general aviation aircraft,
there is a potential for both radiated and conducted noise interference.

The PMA8000D power supply is specifically designed to reduce conducted electrical noise on the aircraft
power bus by at least 50dB. Although this is a large amount of attenuation, it may not eliminate all noise,
particularly if the amplitude of noise is very high. There must be at least 13.8 VDC present at the connector,
J2 pins 8 & 9, of the PMA8000D for the power supply to work in its designed regulation. Otherwise, it can­not adequately attenuate power line noise. Shielding can reduce or prevent radiated noise (i.e., beacon, elec­tric gyros, switching power supplies, etc.) However, installation combinations can occur where interference
is possible. The PMA8000D was designed in a RFI hardened chassis and has internal Electromagnetic In­terference (EMI) filters on all inputs and outputs.

Ground loop noise occurs when there are two or more ground paths for the same signal (i.e., airframe and
ground return wire). Large cyclic loads such as strobes, inverters, etc., can inject noise signals onto the air­frame that are detected by the audio system. Follow the wiring diagram very carefully to help ensure a min­imum of ground loop potential. Use only Mil Spec shielded wires (MIL-C-275000, or better). Under no
circumstances combine a microphone and headphone wiring into the same shielded bundle. Always use a 2­or 3-conductor, shield wire as shown on the installation-wiring diagram.

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The shields can be daisy-chained together, and then connected to the ground lugs mounted on the back plate
shown in Appendix B.

Radiated signals can be a factor when low level microphone signals are "bundled" with current carrying
power wires. Keep these cables physically separated. It is very important that you use insulated washers to
isolate the ground return path from the airframe to all headphone and microphone jacks.

2.4.1.1 Music Inputs and Noise

PMA8000D units utilize a differential input to help prevent noise from entering the music system. This fea­ture is usually transparent to the installer; however, it is important that the appropriate music signal and
ground connections are made directly to the dedicated music signal and ground inputs on the PMA8000D.
The power for IFE and audio panel should be a common bus.

If a music jack instead of a music source is installed for Music 1 or 2, we recommend grounding the jack to
airframe ground.

NOTE

Adding a high-performance audio control system, particularly in conjunction with high-performance active
noise canceling headsets, cannot improve on older avionics that were designed for cabin-speaker use. PS
Engineering makes no claim that the audio panel will provide a noise-free audio quality under all installa­tion conditions, particularly with older avionics.

2.4.2 Power

The PMA8000D is compatible with both 14 and 28 Volt DC systems. A five (5) Amp circuit breaker is
required for all installations. Power and ground wires should be #22 connected to J2 Pins 8 and 9 on each
audio panel. Connect airframe ground to J2 Pin 10 and 11 only, in each audio panel. No dropping resistors
are required.

2.4.3 Audio Panel interface

The PMA8000D is designed to interface with standard aircraft avionics, with a 510 receiver impedance.
For best results, a twisted-shielded cable is recommended from the avionics audio source to the audio panel,
with the shield grounded at the audio panel end.

Some avionics do not provide a separate audio low, and may introduce additional electrical noise into the
system. For best results, connect the audio low from the audio panel to the radio ground, using one conduc­tor of the twisted-shielded cable.

2.4.4 Cockpit Speaker

Each PMA8000D contains a cockpit speaker amplifier. Any radio audio source will be presented to the
cockpit speaker when the SPR button is selected.

NOTE: Do NOT connect both audio panels directly to a single cockpit speaker. This could damage
the audio panel. A dedicated cockpit speaker is recommended for each audio panel.

2.4.4.1 Speaker Load

The PMA8000D contains one speaker amplifier. Some units with internal speaker amplifiers, such as the
King Radio KX170-series, require a resistive load to prevent damage if their speaker amplifier is not used.
Connect the speaker output from the unit to the COM 2 Speaker load input on the PMA8000D (J1 27 WRT

28). The speaker load is 16, 3W. Only one speaker per load is available in the PMA8000D.

2.4.5 Backlighting

The PMA8000D has an automatic dimming of the pushbutton green annunciation LEDs and marker lamps
controlled by a photocell. Control of the unit white backlighting is through the aircraft avionics dimmer. For
14 V (or 5 VDC p/n 050-890-0304, only) aircraft, connect J2 Pins 6 and 7 to the aircraft dimmer bus, and
pin 5 to ground. For 28-volt systems, connect pin 7 to the aircraft dimmer, and pins 5 and 6 to ground.

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If an external dimmer control is not used, a constant back light illumination can be established for nighttime
viewing. Pin 6 or 7 (depending on system voltage) must be tied to power (J2, pin 8 or 9) for the back light­ing system to work. The photocell mounted in the unit face will automatically adjust the intensity of the
push-button annunciator LEDs.

2.4.6 Unswitched inputs

PMA8000D, J1, pins 31, 29 and J2 pin 15 are unswitched, unmuted (by transmitter keying), inputs # 1, 3
and 4, respectively. These inputs are presented to the pilot audio panel and copilot audio panel regardless of
the audio configuration, and will always mute the entertainment inputs. These 510Ω inputs can be used for
altimeter DH audio, GPS waypoint audio, and autopilot disconnect tones, or any other critical audio signal.
Unswitched #1 is always present to the speaker and crew headphones Unswitched 3 and 4 inputs are always
presented to the crew headphones and to the aircraft speaker.

Unswitched

Input

Hear in

Crew Headset

SPR button

Select

Gain

1

Yes

No

1:1(fixed)

2

Yes

Yes

1:1(fixed)

3

Yes

No

Adjustable

4

Yes

No

1:1(fixed)

5 (jack)

Yes

No

1:1(fixed)

Table 2-2 Unswitched input table
Unswitched #2, J1 pin 44 is unswitched is always connected to the crew member’s headphone. However,

this unswitched audio is only presented to the aircraft speaker when the SPR push button has been selected.
The audio low for unswitched #4 (J2, pin 15) should be connected to a convenient audio low. However, this

should NOT be connected to Music Low.

NOTE

Inputs 1, 2 and 4 are fixed (1:1), and any audio level adjustments must be made at the input source.
Unswitched #3 has a variable adjustment control located on the bottom side of the unit. This control allows
you to adjust the volume level of that unswitched input. Refer to Adjustments section.

The front panel jack can be configured to act as a fifth unswitched input. When configured through the front
panel function switches (see operational section), the audio input to this jack will be presented to the pilot
and copilot headsets, and not muted.

NOTE

The front-mounted utility jack is intended for portable equipment that is advisory in nature. It is NOT
INTENDED for use as a primary warning channel. Audio of importance MUST ALWAYS be hard-wired
into the unswitched inputs of the audio panel.

2.4.7 "Swap" Mode

When a momentary, normally open, push-button switch is connected between pin 20 on the J2 connector
and aircraft ground, the user can switch between COM 1, COM 2 and COM 3 by pressing this switch with­out having to change the xmt selector on the audio panel. This yoke-mounted switch eliminates the need to
remove your hands from the yoke to change transceivers. The transfer of TX indication from COM 1 to
COM 2 and COM 3 shows that the swap has been initiated.

Swap selection of COM 3 (COM 1, COM 2, COM 3, or COM 1 and COM 2 only) is a user-selectable op-

tion. Holding the remote “swap” button, press and release the COM 3 RCV button to enable or disable the

COM 3 in the swap rotation.

2.4.8 Bluetooth Telephone Function

The PMA8000D is compatible with most Bluetooth® enabled devices for making and receiving telephone
calls through the aircraft audio system.

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The pilot’s Bluetooth device is presented to the pilot’s audio panel (PMA8000D Pilot) only. M usic and
telephone is not shared.

The copilot’s Bluetooth device is presented to the copilot’s audio panel (PMA8000D Copilot), and provid­ed music for the copilot and any passengers that may be connected to an intercom expansion unit. The copi­lots cellular telephone can also be shared with the pilot. See § 3.4.

2.4.8.1 Cell phone Sidetone

As shipped from PS Engineering, the PMA8000D provides cellular telephone sidetone (the user’s voice fed
back to the headset). Some cell phones do provide sidetone. In PMA8000D audio panels, Telephone
sidetone can be disabled by pressing the COM 3 and ADF buttons for more than one second. NOTE: This
will not provide cellular telephone sidetone in ISOLATE intercom mode, because the intercom signal is
not available to the pilot.

NOTE

Unauthorized use of unapproved cellular telephone devices in aircraft is subject to FCC enforcement action,
which may include a $10,000 fine per incident.
FCC Regulation 47 CFR § 22.925 Prohibition on airborne operation of cellular telephones.
Cellular telephones installed in or carried aboard airplanes, balloons or any other type of aircraft must not
be operated while such aircraft are airborne (not touching the ground). When any aircraft leaves the ground,
all cellular telephones on board that aircraft must be turned off.
PS Engineering, Inc. does not endorse using unapproved cellular telephone equipment in flight, and takes
no responsibility for the user’s action.
PS Engineering does not guarantee compatibility with personal cellular telephones. For a list of phones that
have been tested, visit http://www.ps-engineering.com/support.

2.4.9 Public Address Mode

By pressing the Mute and SPR pushbuttons at the same time, the PMA8000D will be placed into public
address (PA) mode. In this mode, the pilot will be talking over the cockpit speaker when he presses his PTT
switch. Copilot will still continue on the selected COM radio.

When the discrete Output is enabled, J2 Pin 19 will go low when in PA mode, providing a logic level that
can be used to incorporate a speaker-switching scheme. This 50 mA circuit (10Ω Z) can control a switching
means such as a relay that would transfer the speaker output amplifier from the cockpit speaker to drive
another cabin speaker. If the PA mode is used with a microphone in proximity to an active cockpit speaker,
feedback might result.

To enable the PA discrete Output located at the rear connector, the internal configuration jumper, J4,
MUST be placed across both pins in the header. This jumper is shipped as open from the factory.

NOTE: Do NOT connect both audio panels directly to a single PA speaker. This could damage the
audio panel.

2.4.9.1 Public Address Output Jumper

1. Remove qty. 5 Phillip head screws from the PM8000B. NOTE: IF PRESENT, THE SCREW IN
THE REAR OF THE PANEL IS A DIFFERENT LENGTH THAN THE OTHER FOUR.
YOU MUST PUT THE SHORTER LENGTH SCREW BACK IN THE SAME LOCATION
OR DAMAGE WILL OCCUR. See Figure #1.

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Figure 2-1 Screw Locations

2. Move the blue jumper located in the back corner near the sub-D connectors on both pins of J4. See
Figure #2-3.

Figure 2-2 Jumper Lo­cation

4. Place the lid back on the unit, aligning holes.

5. Install and tighten qty. 4 long thread screws into the lid, and one short screw on the rear.

2.4.10 PA Mute (J2, Pin 12)

Pin 12 of J2 is a TTL logic output that is pulled low during PTT operation.

Long shaft screws

Short shaft screw (if present)

Jumper Off (no
PA mode)

Jumper On
(PA mode
enabled)

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2.4.11 Miscellaneous Logic Output (J2, Pin 18)

Pin 18 of the J2 connector is pulled to ground whenever the AUX button is depressed. This serves as a con­trol line for external devices that the pilot wishes to control.

2.4.12 Marker High Sensitivity (J2 Pin 13)

The PMA8000D defaults to LOW marker sensitivity of 1000µVolts. If High marker beacon sensitivity is
desired, J2 Pin 13 can be connected to ground (or J2 pin 14), through a switch, to set the marker beacon
threshold sensitivity to 200 µVolts.

2.4.13 Dual Audio Panel Connections

The PMA8000D has specific interconnection between the two audio panels, which we refer to as Pilot’s, or
Primary; and Copilot’s, or Secondary.

2.4.13.1 Crosstie (x-tie) Audio

Audio cross tie containing the other crewmember and passenger intercom, as appropriate selected by inter­com mode, is transferred between audio panels on J2, Pin 3 (audio output to the other audio panel) and J2
Pin 32 (Audio input from the other audio panel). Connect Pins 2 to 32 on the other panel.

2.4.13.2 Serial Data (J2 Pins 24 & 26)

A serial communication bus communicated mode information between the primary and secondary panels.
J1 Pins 24 and 26 are the serial data connections. Connect Pin 24 (Data +) to Pin 24 on the other panel, and
Pin 26 to Pin 26 (Data –).

2.4.13.3 PTT Sense

Each audio panel needs to know if the other unit is transmitting. The J2, Pin 33 on each audio panel senses
that the other crew member is transmitting, and will block any attempt by the copilot’s panel to simultane­ously transmit on the same radio as the pilot.

2.4.13.4 Secondary Audio Panel Strap (J2, Pin 17)

This pin is permanently connected to ground and determines which panel is considered the secondary (or
copilot’s). This strap must be installed on the copilots box only for proper operation.

NOTE: The pilot and copilot PMA8000D units are interchangeable, because this pin alters the functionality
of the unit installed in that position.

2.4.14 CVR Output (J2, Pin 4) Part Numbers –0314, -0315, -0316, -0317, -0334, -0335, -0336
and -337 ONLY)

The PMA8000D (Part Number – ONLY) contains an output for Cockpit Voice Reorder. This audio output
contains the intercom audio presented to the crewmember associated with the audio panel, as well as the
selected radio audio and unswitched audio. This audio output is complaint with 14 CFR §23.1457 and

§25.1457 (a)(1), (3), (4), and (5).

2.5 Intercom wiring

See Appendix C and D for intercom connection configurations. It is critical to the proper operation of this
system to have this connector wiring made in accordance with these diagrams. Use 2- and 3-conductor,
MIL-spec cable as shown. Connect the shields at the audio panel end only, and tie to the audio low inputs as
shown.

2.5.1 Entertainment Inputs

The PMA8000D has two INDEPENDENT music inputs, PLUS a front mounted jack that is connected to
Entertainment 1. Entertainment input number 1 is J2 pins 23 (left channel) and 24 (right channel), with re­spect to pin 25, and Entertainment number 2 is connected to 26 (left channel), 27 (right channel), with re­spect to 28.

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NOTE: Entertainment input #2 is NOT connected to the primary (pilot’s) audio panel.

PMA8000D (050-890-0304) has wireless connectivity to stream music from a paired Bluetooth device. This
stream is distributed as Music 1. Refer to §3.11.3 for more information.

NOTE

Use the low level output of any additional entertainment device to connect to the audio
panel. Maximum signal level is 3 VAC p-p. DO NOT use a speaker-level output, this
will cause internal damage in the audio panel.

2.5.1.1 Pilot, Copilot and Passenger music

In a dual installation, the Pilot audio panel has music input from the front panel jack, rear connector (Enter­tainment. #1 Audio), and Bluetooth® input. This is only Music #1, and localized to the Pilot’s audio panel.

The Copilot’s audio panel has inputs from Music 1 and Music 2. Music input 1 can be heard by the copilot
and the passengers when the Music 1 is properly configured, or Music input 2 can be heard by the passen­gers and controlled by the copilot. Further, an additional music input can be input directly to the IntelliPAX
expansion unit, and controlled by the passengers. Neither Music 2 nor the expansion music can be heard by
the copilot.

Source

Pilot Audio

Panel

Copilot Au-

dio Panel

Passenger Intercom

Pilot Panel Music 1

Yes

No

No

Pilot Panel Bluetooth

Yes

No

No

Copilot Panel Music 1

No

Yes

“Music 1 All Headsets” & “Alternate Music Distribution”

Copilot Panel Bluetooth

No

Yes

“Music 1 All Headsets” & “Alternate Music Distribution”

Copilot Panel Music 2

No

No

Yes, in “Standard Music Distribution,” Alternate Music
Distribution, and Crew Mode

Expansion Music Input

No

No

Yes (will be combined with Copilot’s music is supplied).

Table 2-3 Music Sources

2.5.2 Entertainment muting

The PMA8000D-system incorporates a four-mode "Soft Mute™" system. This will mute the entertainment
devices during ICS and/or radio conversation. See Section 3.8 for more information.

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Press the Mute switch to activate the four Karaoke modes (disabling crew SoftMute™). Turning down the
entertainment volume allows the pilot to place the entertainment into the background while having the radi­os in the foreground and eliminates the constant interruption of the music while still keeping the radios a
priority.

CAUTION

Local oscillators and internal signals from entertainment equipment can cause undesired interference with
other aircraft systems. Before takeoff, operate the entertainment devices to determine if there is any adverse
effect within the aircraft systems. If any unusual operation is noted in flight, immediately switch off the en­tertainment devices.

All additional entertainment devices must be switched off for both takeoff and landing.

2.5.2.1 Entertainment 2 Mute

In the copilot panel, if Music input 2 is used to feed music to the expansion unit, Music 2 mute control is by
holding the AUX and MUTE buttons for more then one second. This is functional for the copilot audio
panel only.

2.5.3 Configuring Music Input with Function Keys

The music inputs can be configured by the user from the front panel (see section 3.10). There are three con­figurations available, independent (standard music distribution), ICS mode dependent (alternate music dis­tribution), and single input (music 1 to all stations).

If the inputs are independent, Input #1 (or the front jack) is provided to the pilot and copilot. Muting
(SoftMute™) is controlled by the front panel “mute” button. Music 2 is provided to the passengers at all
times, with muting controlled by an external switch (see § 2.5.2.1).

If the inputs are intercom mode dependent, input 1 goes to the pilot, copilot, and all passengers when the
intercom is in the “ALL” mode. In “ISO” mode, the copilot and passengers will hear music input 1. Music 2
is ONLY active in CREW mode, and then provided only to the passengers. The externally switched passen­ger SoftMute™ control becomes active in CREW.

If the single-source mode is activated through the function keys, the front panel jack (and music 1) is con­nected to all intercom positions, regardless of the intercom mode. Crew muting is controlled by the front
panel, passenger muting controlled through the switch. See section 3.11 for more details.

2.5.3.1 Annunciation and recorder playback

The pilot and copilot can hear the Function Key annunciations. If the customer wants to exclude playback
and function key annunciation playback from the copilot position, contact PS Engineering for more infor­mation.

2.5.4 Playback Button Installation

Internal Recorder can be played back from the front panel. A remote momentary, normally open (NO) push
button switch may be installed if desired. This will allow you to remotely activate the Recording System
playback. This switch can be located anywhere in cockpit convenient to the pilot's reach. The NO switch
should be connected to pin 22 of J2 of the PMA8000D, and ground. When installed, this button will act as
in § 3.13.

2.5.5 Passenger Intercom Expansion (IntelliPAX)

The PMA8000D can support one or two, six-place intercom expansion units (PS Part Number 11636R), for
up to 12 passengers. These expansion units are connected to the copilot’s PMA8000D.

In the dual installation with expansion, the passengers can speak to each other at all times, and the intercom
mode control allows for intercom communications with the copilot or both crew members. See section

3.7.3. for operating information.

PS Engineering

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Figure 2-3 Audio Panel Configuration with Expansion

2.6 Marker Beacon Installation

2.6.1 Marker Antenna Installation

A marker beacon antenna, appropriate to the type and speed of the aircraft, is required (not included). Refer
to aircraft and antenna manufacturer's installation instructions, as well as AC43.13-2B (or later revision),
Chapter 3, for information on proper antenna installation techniques. The marker beacon antenna must be
mounted on the bottom of the aircraft.

2.6.2 External Marker Lights

For installations that require external marker beacon lights, there are three outputs that can drive 12-Volt
lamps only. The external output lamps are driven high (typically +7.0 VDC 4.0 VDC unloaded, at MAX
brightness) when active. Maximum source current per lamp is 125 mA. Voltage varies with photocell dim­ming.

2.6.3 Middle Marker Sense

A Middle Marker Sense output signal is available from the PMA8000 to certain flight control systems. This
function will not operate during the test mode. This output will go to +4.5 VDC ( 1.0 VDC) when a valid
Middle Marker signal is received. This output is J1, pin 39.

2.6.4 Marker Sensitivity switch (J2 Pin 13)

The PMA8000D defaults to LOW marker sensitivity of 1000µVolts. If High marker beacon sensitivity is
desired, J2 Pin 13 can be connected to ground (or J2 pin 14), through a switch, to set the marker beacon
threshold sensitivity to 200 µVolts.

2.7 Adjustments

The PMA8000D is factory adjusted to accommodate the typical requirements for most aircraft configura­tions. There are three adjustments in the top cover that allow the installer to tailor the specific functions.

PS Engineering

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Figure 2-4- PMA8000D Adjustments, top cover

 Speaker Volume- Turn adjustment clockwise to increase cabin speaker output.
 Marker Beacon Volume, turn adjustment counterclockwise to increase marker beacon audio level.
 TEL volume, turn adjustment Clockwise to increase the incoming telephone audio.
 ANN VOL Function Mode Annunciation Volume – controls the level of the to access voice an-

nunciations contained in the unit. (Top cover must be removed).

 Unswitched Input 3 Volume, adjust from 50% to 200% of input value. (Bottom cover must be re-

moved).

Figure 2-5 – Unswitched 3 Audio Level (bottom cover removed)

Front

of unit

NOTE:

If top cover is removed
for ANY reason, you
MUST replace the cover
screws with the proper
length, otherwise damage
will result.

Shorter Screw

(If present)

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

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200-890-0304 Page 2-12 Rev. 6, Oct. 2014

2.8 Communications Antenna Installation Notes

For best results while in Split Mode, it is recommended that the one VHF communications antenna is locat­ed on top of the aircraft while the other communications antenna is installed on the bottom. Any antenna
relocation must be accomplished in accordance with AC 43.13-2B, aircraft manufacturers’ recommenda­tions and FAA-approved technical data.

WARNING

It is probable that radio interference will occur in the split mode when the frequencies of the two air­craft radios are adjacent, and/or the antennas are physically close together. PS Engineering makes no

expressed or implied warranties regarding the suitability of the PMA8000D in Split Mode.

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2.9 PMA8000D Pin assignments

J1

Function

J2

Function

1

MKR Ant

1

Pilot Phones Low

2

MKR Ant Low

2

No Connect

3

Com 3 Audio Hi

3

X-tie Audio Out

4

COM 3 Low

4

CVR Audio Out (Hi)

5

COM 3 Mic Audio Hi

5

Lights Low

6

COM 3 Mic Key

6

14V5V Lights Hi//28 V Lights Low

7

ADF Audio In

7

14/28/5 V Lights Hi

8

ADF Audio Low

8

11-33 VDC Aircraft Power

9

COM 1 Audio Hi

9

11-33 VDC Aircraft Power

10

COM 1 Low

10

Airframe Ground

11

COM 1 Mic Audio Hi

11

Airframe Ground

12

COM 1 Mic Key

12

PA Mute

13

COM 2 Audio Hi

13

MKR HI Sense

14

COM 2 Low

14

MKR HI Sense Low

15

COM 2 Mic Audio Hi

15

Unsw 4 Aud Hi

16

No Connect

16

Pilot Phones (L)

17

NAV 1 Audio Hi

17

Copilot Panel Strap (Copilot unit only)

18

NAV 1 Low

18

No Connect

19

NAV 2 Audio Hi

19

PA Active

20

NAV 2 Low

20

Swap

21

DME Audio Hi

21

Swap Low Not on wiring diagram

22

DME Low

22

IRS Playback

23

Aux Audio Hi

23

Ent. #1 Audio 1 (L)

24

Data +

24

Ent. #1 Audio 1 (R)

25

No connect

25

Ent. #1 Audio Low

26

Data -

26

Ent. #2 Audio 1 (L) (Copilot Unit only)

27

Speaker Load

27

Ent. #2 Audio 1 (R) (Copilot Unit only)

28

Speaker Load

28

Ent. #2 Audio Low (Copilot Unit only)

29

Unsw 3 Aud Hi

29

No Connect

30

COM 2 Mic Key

30

No Connect

31

Unsw 1 Aud Hi

31

Pilot Phones (R)

32

UnswAud 1 Low

32

X-tie Audio Input

33

Pilot Mic Audio

33

PTT Sense

34

Pilot PTT

34

Pilot/Copilot Mic Low

35

Pilot Mic Low

35

Expansion #1 Audio Input

36

Ext IM MKR- White

36

Expansion Low

37

Ext OM MKR- Blue

37

Expansion #2 Audio Input

38

Ext MM MKR- Amber

38

Expansion Low

39

MM Sense

39

Expansion #1 Power

40

Expansion Audio Output (L)

40

No Connect

41

Expansion Audio Output (R)

41

Expansion #2 Power

42

No Connect

42

CVR Audio Low

43

Unsw Aud 2 Low

43

Speaker Low

44

Unsw Aud 2 Hi

44

Speaker Hi

PMA8000D Functions Only

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2.10 Wiring Checkout

After wiring is complete, verify power is ONLY on pins 8 and 9 of the J2 and airframe ground on connector
pins 10 and 11. Failure to do so will cause serious internal damage and void PS Engineering's warranty.

2.11 Unit Installation

To install the PMA8000D, gently slide the unit into the mounting rack until the hold-down screw is en­gaged. While applying gentle pressure to the face of the unit, tighten the 3/32" hex-head in the center of the
unit until it is secure. DO NOT OVER TIGHTEN.

CAUTION

Apply steady pressure to the bezel while screwing the unit into the tray to ensure even seating of the unit
and connectors. WARNING Do not over-tighten the lock down screw while installing the unit in tray. In-

ternal damage will result.

2.12 Operational Checkout

2.12.1 Required Test Equipment

In order to return an aircraft to service after installation of the PMA8000D, the installer must have access to
a Marker Beacon signal generator:

a. IFR NAV401L, NAV402AP, IFR4000
b. TIC T-30D, T-36C

Equivalent test equipment is acceptable as long as the testing requirements can be met.

2.12.2 Audio Panel Test

NOTE

The IntelliVox® is designed for ambient noise levels of 80 dB or above. Therefore some clipping may oc­cur in a quiet cabin, such as without the engine running, in a hangar. This is normal.

1. Apply power to the aircraft and avionics.

2. Plug headsets into the pilot, copilot, and occupied passenger positions.

3. Verify fail-safe operation by receiving and transmitting on com 1 from the pilot & copilot position,

with the audio panel power off. The COM audio will be present in one ear cup only.

4. Switch on the units by pressing the volume (VOL) knob on both audio panels.

5. Verify both panels are in CREW mode.

6. Check intercom operation.

7. Push the COM 1 Xmt select button (lower row) on both audio panels.

8. Verify that both of the COM 1 buttons light. Verify that transmit button LED (Light Emitting Diode)

near the mic selector is not blinking. If the LED is blinking, stop testing and troubleshoot the micro­phone PTT installation.

9. Verify proper transmit and receive operation from the copilots audio panel, noting that the copilot PTT

switch allows proper transmission on the selected transceiver. Verify that the COM 1 Xmt button blinks
when transmitting.

10. Verify that pushing the COM 2 button causes the button to illuminate, and the COM 2 receiver to be

heard. Verify operation on COM 1 from the pilot position.

11. Repeat for COM 2

12. Repeat for COM 3

13. Verify proper operation of all receiver sources by selecting them using the appropriate button. The but-

ton illuminates to show which source is in use.

14. Push the SPR button. Verify that all selected audio is heard in the cockpit speaker. Verify that the audio

mutes when the mic is keyed.

15. Verify that the appropriate LED in the lower button row blinks when either push to talk is keyed.

16. Verify proper Intercom system operation in the ALL, ISO and CREW modes (see page 3-3).

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17. Verify that the audio selector panel system does not adversely affect any other aircraft system by sys-

tematically switching the unit on and off, while monitoring the other avionics and electrical equipment
on the aircraft.

2.12.3 Marker Checkout

1. Connect a ramp generator at the antenna end of the marker coax. With the unit under test in HI sensitiv-

ity, verify that a430 Volts, modulated 95% with 1300 Hz, signal will illuminate the amber (M) marker
light, and that marker audio is present in the headphones when the Marker Audio (MKR) push-button
has been depressed. Select SPR for speaker to verify marker audio availability on the cabin speaker.
Verify that the white (I) and blue (O) lights will illuminate within  3dB of the amber lamp, with 3000
HZ and 400 Hz applied, respectively.

2. Repeat with the unit in High sensitivity (P2, Pin 13 grounded), with 160 V applied.

3. Connect the marker antenna and verify proper operation.

2.12.4 Bluetooth Telephone Checkout

Verify that the PMA8000D will “pair” with a Bluetooth device, and interface with cellular phone and Music
source. See section 3.12 for more information. Verify that the pilot headset is connected to the cellular tele­phone system (if installed). Verify that by using the pilot side PTT, the pilot can transmit on the other se­lected radio (COM 1 or COM 2). The telephone function will allow any person heard by the pilot on the
intercom, also heard on the telephone.

2.12.5 Internal Recorder Checkout

With headset plugged into pilot’s side jacks, tune COM 1 to local frequency, such as FSS or ATC ground.

Select COM 1 on mic selector switch, and record several incoming radio transmissions.
Note: The recorder will not play back a recording while the COM is active.
Press the COM receiver pushbutton that corresponds to the selected radio transmitter and hold for approxi-

mately one second. This action will then automatically play back the last recorded message. Press and
HOLD the button again to stop the play back, and then momentarily press again to play prior messages.

This audio should appear in the pilot’s headset only and only be incoming transmissions from the selected
transceiver. Depress the audio panel or yoke mounted playback switch, and verify that messages play, in
the order received. Repeat for COM 2 and COM 3. The playback will be stopped by audio on the selected
com. The message can be replayed from the beginning, and audio received during the playback will not be
stored.

Repeat for copilot’s audio panel.

2.12.6 Function Button Checkout

Each audio panel will have some differences in the function operation. Below shows the differences. While
listening to the pilot’s headset, press and hold the particular button with a second function and listen for the
correct spoken text:

Pilot’s Audio Panel:

Button

Announcement 1

Announcement 2

Announcement 3

COM 3 XMT

Alternate Intercom
Function

Standard Intercom Func­tion

AUX

Monitor On

Monitor Off

MUTE

Music On

Music Off

SPR

Chime; music increases

Chime, music decreases

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Copilot’s Audio Panel

Button

Announcement 1

Announcement 2

Announcement 3

COM 3 XMT

Alternate Intercom
Function

Standard Intercom Func­tion

AUX

Monitor On

Monitor Off

MUTE

Music one all headsets

Alternate Music Distri­bution

Standard Music Distri­bution

SPR

Chime; music increases

Chime, music decreases

See operation section for information. Incoming audio on selected com will stop the audio.

2.12.7 Repeat for other audio panel.

Verify that the pilot’s audio panel has transmission priority over the copilot’s panel.
Select “CREW” mode on the pilot’s audio panel. Verify that the copilot’s audio panel enters the “CREW”

mode.

2.13 Final Inspection

Verify that the wiring is bundled away from all controls and no part of the installation interferes with air­craft control operation. Move all controls through their full range while examining the installation to see
that no mechanical interference exists. Verify that the cables are secured to the aircraft structure in accord­ance with good practices, with adequate strain relief. Ensure that there are no kinks or sharp bends in the
cables and coaxial cables. Verify that the cables are not exposed to any sharp edges or rough surfaces, and
that all contact points are protected from abrasion.

Complete documentation that may be required, such as a logbook entry, weight and balance computation
and FAA Form 337. Sample text for FAA Form 337, and instructions for continuing airworthiness can be
found in Appendix F. Return completed warranty registration application to PS Engineering, or complete
online at www.ps-engineering.com.

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Section III OPERATION

3.1 SCOPE

This section provides detailed operating instructions for the PS Engineering PMA8000D, Audio Selector
Panel/Marker Beacon Receiver/Intercom Systems. Please read it carefully before using the equipment so
that you can take full advantage of its capabilities.

This section is divided into sections covering the basic operating areas of the PMA8000D systems. They are
Communications Transceiver Selection, Audio Selector, Intercom, Marker Beacon Receiver and special
functions, including the Bluetooth® functionality in the PMA8000D.

Figure 3-1 PMA8000D Operating Controls

Unit power is turned on and off by pushing the volume knob. In the OFF or "EMG" posi­tion, the pilot headset is connected directly to COM 1. This allows communication capa­bility regardless of unit condition. Any time power is removed or turned OFF, the audio
selector will revert to fail-safe mode.

NOTE: Both crew members are connected to COM 1 in fail-safe. There is no priority,
and in some cases microphone loading may make it necessary to unplug one crew mem­ber’s microphone for optimum transmission quality.

The power switch controls all audio selector panel functions, intercom and marker bea­con receiver. All pushbutton selections will be remembered and return to the last state
when turned on.

3.2 Communications Transmit (XMT) Selection (2)

There are three pushbuttons associated with the transmitter selection. The three lower
buttons (# 2) control which transceiver is selected for transmit. The top row of pushbut­tons (# 3) allows selection of the receiver audio. Push the lower button to select the de­sired COM transmitter.

The PMA8000D-Series has an automatic selector system. Audio from the selected trans­ceiver is automatically heard in the headsets and speaker (if selected). You can check
this function by switching from COM 1 transmitter to COM 2 or COM 3 transmitter by
pressing the transmitter selector pushbutton. See that the associated COM 2 or 3 receive
pushbutton indicator light that is located immediately in the transmitter pushbutton turns
green. This guarantees that the pilot will always hear the audio from the transceiver se­lected for transmit.

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The PMA8000D “remembers” the receiver selection, so that when switching transmitters from COM 1 to
COM 2, if COM 2 or COM 3 audio was previously selected, COM 1 audio will continue to be heard. This
eliminates the pilot having to switch COM 1 audio back on, after changing transmitters.

When switching from COM 1 to COM 2 or COM 3 while that COM was not previously selected, COM 1
audio will be switched off. In essence, switching the mic selector will not override prior selection of COM
receiver audio.

In normal (not split) modes, the PMA8000D gives priority to the pilot’s radio Push-To-Talk (PTT). If the
copilot it transmitting, and the pilot presses his PTT, the pilot’s microphone will be heard over the selected
com transmitter.

3.2.1.1 Dual Transmission

NOTE

Due to the nature of VHF communications signals, and the size constraints in general aviation aircraft, it is
probable that there will be some bleed-over when both flight crew membes transmit at the same time on
different radios, particularly on adjacent frequencies. PS Engineering makes no warranty about the
suitability of dual transmit in all aircraft conditions.

3.2.1.2 Swap Mode (Switch from COM 1 to COM 2 or COM 3 remotely)

With a yoke mounted, normally open momentary switch, the pilot can change from the current COM trans­ceiver to the other by depressing this switch. To cancel "Swap Mode," the pilot may either press the yoke
mounted switch again, or select a different COM with the XMT buttons. The PMA8000D can be configured
by the user to either Swap COM 1/COM 2, or COM 1/COM 2/COM 3. To change this function, press and
hold the swap switch, and push and release the COM 3 RCV button momentarily.

3.2.1.3 Monitor Mode

The PMA8000D is equipped with a Monitor function, which allows a secondary com radio audio to be
muted by the primary radio (selected for transmit). See §3.11.2 for more information. This feature is reset
on power cycles.

3.2.1.4 Stuck Microphone Protection (For units with serial number BD1023 and above)

The PMA8000D will sense if the pilot or copilot radio PTT remains keyed for more than 32 seconds. When
a stuck mic is detected, the key input is ignored, and the other crewmember can transmit normally. If the
stuck becomes ungrounded, normal operation is restored.

3.3 Audio Selector (4)

Communication audio from the other radio, not selected for transmit, can be heard by pressing the associat­ed RCV button. You will always hear the audio from the selected transceiver.

Navigation receiver audio is selected through five momentary, push-button, backlit switches.
The users can identify which receivers are selected by noting which green switch LEDs are lit. Navigation

aid audio push buttons are labeled NAV 1, NAV 2, ADF and AUX (auxiliary). DME audio (if present) will
come through when the AUX button is selected. When one of these buttons is pressed, the mode is active,
and the LED will illuminate. Press the switch again and it will be "off" and remove that receiver from the
audio output.

Marker Audio (MKR) can be selected by pressing the MKR button for more than one second. (9)

3.4 Bluetooth Telephone

In a dual PMA8000D Installation, the pilot’s Bluetooth transceiver services music and telephone for the
pilot only. It is not possible to share the phone connected to the pilot’s audio panel. If the pilot’s cell phone
does not provide sidetone on the Bluetooth connection, the pilot will not hear himself on the telephone,
even if sidetone enabled per §3.4.1.

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200-890-0304 Page 3-3 Rev. 6, Oct. 2014

Warning:

United States FCC Regulations contained in 47 CFR § 22.925 contain prohibition on airborne operation of
cellular telephones. “Cellular telephones installed in or carried aboard airplanes, balloons or any other type
of aircraft must not be operated while such aircraft are airborne (not touching the ground). When any air­craft leaves the ground, all cellular telephones on board that aircraft must be turned off.”

When the pilot connects to the Telephone, the audio panel automatically enters the ISO mode on the inter­com to facilitate the call. The pilot will still have complete access to the aircraft radios, and will transmit on
the selected com when he uses the radio push-to-talk.

The copilot panel’s Bluetooth transceiver will provide music and telephone for the copilot and the passe n­gers.

The copilot’s Bluetooth device connects the copilot and passengers to this phone and music source. This
connects the telephone to the users as follows:

Intercom mode

Copilot

Passengers

ALL





CREW

*

ISO



 Heard on the phone

*Passenger exclusive telephone conversation

NOTE

Because the cell-phone uses an intercom circuit, all stations on that circuit will lose intercom capability
when the cell phone is in use, but will be heard if the phone is connected.

3.4.1 Cell phone Sidetone

The pilot’s panel does NOT have the capability for cell phone sidetone.
As shipped, the copilots PMA8000D does provide cellular telephone sidetone (the user’s voice fed back to

the headset). Some cell phones provide sidetone. In PMA8000D audio panels, Telephone sidetone can be
disabled by pressing the COM 3 and ADF buttons for more than one second. Cell phone sidetone generated
by the audio panel is not available in the ISO mode.

NOTE: because the sidetone is generated by the PMA8000D intercom, there will never be any sidetone
audio available in ISO mode for either box.

3.5 Speaker Amplifier (5)

The SPR in the lower right section stands for speaker. This switch will place all selected audio on the cock­pit speaker when this switch is selected. Except for the unswitched audio, the speaker amplifier is not active

in the "Split Mode”.

Unswitched audio, (the inputs dedicated to autopilot disconnect, altimeter warning, etc.) will come through
the speaker regardless of the speaker button position.

Depending on installation, important audio annunciations such as radar altimeter or autopilot disconnect
will come over the speaker even if it is not selected, while other unswitched, but muted inputs, such as GPS
alerts, will only be present if the SPR button is selected. Consult your professional
avionics installer for these important configuration details.

3.5.1.1 Public Address Function

To access PA function, press the Mute and SPR buttons simultaneously. The
pilot microphone will be heard on the speaker when the pilot PTT is used. The
copilot can continue to use the selected com radio while the pilot will now be

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heard over the speaker. During Public Address, the Mute and SPR buttons will flash. To exit PA mode,
push Mute and SPR again. This feature is reset at power cycles.

3.6 Marker Beacon Operation (9)

The Marker Beacon Receiver uses visual and audio indicators to alert you when the aircraft passes over a
75 MHz transmitter.

The Blue lamp, labeled “O”, is the Outer Marker lamp and has an associated 400-Hertz 'dash' tone. The
lamp and tone will be keyed at a rate of two tones/flashes per second when the
aircraft is in the range of the Outer Marker Beacon.

The Amber lamp, labeled “M”, is the Middle Marker lamp and is coupled with a

1300 Hertz tone. It is keyed alternately with short 'dot' and long 'dash' bursts at 95
combinations per minute.

The White lamp, labeled “I”, is the Inner marker and has a 3000 Hertz 'dot' tone. The lamp and tone will be

keyed at a rate of six times per second.
The audio from the Marker Beacon Receiver can be heard by pushing the "MKR" push-button switch mo-

mentarily.
A marker AUD LED will indicate the marker beacon audio has been selected.
To adjust the volume level, there is a service adjustment located on the top of the unit.
The Marker Sensitivity is controlled by an external switch, labeled MKR HI sense. When switched to

ground, the marker receiver is in high sensitivity, otherwise, the marker is in LOW sense by default, and the

“LOW” indicator on the audio panel is illuminated.

Holding the MKR button for one second activates marker test lamp, labeled "T/M" and illuminates all three
lamps simultaneously to assure the lamps (internal and external) are in working order. T/M does not acti­vate MM autopilot sense output.

Pressing the marker mode select (“T/M”) for one second will also cause the marker audio to mute for that
beacon. The next beacon received will re-activate the audio.

3.7 Intercom Operation

3.7.1 IntelliVox® VOX-Squelch

No adjustment of the IntelliVox® squelch control is necessary. There is no field adjustment. Through three
individual signal processors, the ambient noise appearing in all six microphones is constantly being sam­pled. Non-voice signals are blocked. When someone speaks, only their microphone circuit opens, placing
their voice on the intercom. The system is designed to block continuous tones; therefore people humming or
whistling in monotone may be blocked after a few moments.

For consistent performance, any headset microphone must be placed within ¼-inch of your lips, preferably against
them. (ref: RTCA/DO-214, 1.3.1.1 (a)).

NOTE

It is also a good idea to keep the microphone out of a direct wind path. Moving your head through a vent air
stream may cause the IntelliVox® to open momentarily. This is normal.

The IntelliVox® is designed to work with normal aircraft cabin noise levels (70 dB and above). It loves
airplane noise! Therefore, it may not recognize speech and clip syllables in a quiet cabin, such as in the
hangar, or without the engine running. This is normal.

For optimum microphone performance, PS Engineering recommends installation of a Microphone Muff Kit
from Oregon Aero (1-800-888-6910). This will not only optimize VOX performance, but will improve the
overall clarity of all your communications.

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Manufacturer

Model

Mic Muff™ Part Number

Bose

Dynamic
Electret
M87 Dynamic

90010
90015
90020

David Clark

H10-30
H10-20, H10-40
H10-13.4

90010
90015
90015

Lightspeed

All

90015

Peltor

7003
7004

90010
90015

Pilot

11-20 & 11-90

90015

Sennheiser

90015

Telex

Airman 750, Echelon
AIR3000

90015
90010

Table 3-1 Mic Muff ™ Part Numbers

3.7.2 Intercom Volume Control (7)

The inner volume control knob adjusts the loudness of the intercom for the crewmember connected to the
audio panel. It has no effect on selected radio levels, music input levels or passengers' volume level.

The outer volume control knob controls intercom volume for the passengers connected to the secondary
(copilot’s) audio panel. It has no effect on radio or music levels. Pilot’s outer knob is not active.

Adjust the radios and intercom volume for a comfortable listening level. Most general aviation headsets
today have built-in volume controls; therefore, volume also can be further adjusted at the individual head­set.

3.7.3 Intercom Modes (8)

The “ICS” pushbutton switch on the left side of the panel provides the selection of the intercom modes.

This button cycles through the intercom modes, from top to bottom, then bottom to top as: ISO, ALL Crew
and Crew, ALL, ISO. An LED shows which mode is currently active.

Pilot

Position

Pilot’s

Selected

Radios

Copilot

Selected

Radios

Copilot

Intercom

Passenger In-

tercom

Pilot Music

Music 2

ISO

YesNoNo

No

Yes*

No

ALL

YesNoYes

Yes

Yes

No

CRW

YesNoYesNoYes

No

Alternate

Intercom

Mode

See §3.10.1

YesNoYes

Yes*

*No when ra-

dio is active

Yes

No

Copilot Posi-

tion

Copilot’s

Selected

Radios

Pilot’s

Selected

Radios

Pilot Inter-

com

Passenger In-

tercom

Copilot

Music

Music 2

ISO

YesNoNo

No

Yes*

No

ALL

YesNoYes

Yes

Yes

No

CRW

YesNoYesNoYes

No

Alternate

Intercom

Mode

See §3.10.1

YesNoYes

Yes*

*No when ra-

dio is active

Yes

No

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Passenger

Positions

Pilot Selected

Radios

Copilot

Selected

Radios

Pilot

Intercom

Copilot

Intercom

Passenger

Intercom

Copilot

Music 1*

Copilot

Music

2*

ISO

No

NoNoNo

Yes

No

Yes

ALL

No

Yes

Yes

Yes

Yes

Yes

Yes

CRW

No

NoNoNo

Yes

No

Yes

Alternate In-

tercom Mode

See §3.10.1

No

No

Yes

Yes

Yes

Yes

Yes

Passenger intercom is only available if an IntelliPAX Intercom module is used.
Passenger Music source depends on music function mode. See § 3.10.3

 If the pilot panel is in ISO mode, the copilot only has ISO and ALL modes available.
 The pilot forces the copilot audio panel into crew mode and the copilot can force the pilot out of

the crew mode.

ISO: The pilot is isolated from the intercom and is connected only to the aircraft radio system. He will hear
the aircraft radio reception (and sidetone during radio transmissions). Copilot will hear passengers’ inte r­com and entertainment, while passengers will hear copilot intercom and entertainment. All will hear aircraft
radio receptions and pilot transmissions will in the ALL mode, but if the copilot goes to the ISOLATE then
passengers will not hear radio traffic. The pilot can hear music if desired. See §3.8.1, this feature is reset at
power cycles

ALL: All parties will hear the aircraft radio and intercom. Crew and passengers will hear selected enter­tainment. During any radio or intercom communications, the music volume automatically decreases. The
music volume increases gradually back to the original level after communications have been completed.

CREW: Pilot and copilot are connected on one intercom channel and have exclusive access to the aircraft
radios that each crew member selects. They may also listen to Entertainment 1. Passengers can continue to
communicate with themselves without interrupting the Crew and may listen to entertainment as configured.

3.8 Music and Music Muting (6)

The PMA8000D has two independent music inputs at the rear connector, and a front panel jack. The
PMA8000D also has the ability to receive streaming music from a Bluetooth-enabled device.

Music 1 will be heard by the pilot and copilot positions. Music 1 can also be distributed to the passengers

using the Function “C” control (See § 3.11.3). The front panel jack input is treated as Music 1 ( this could
be confusing since we have a “Music #1 ALL headsets, but the FP jack doesn’t work that way ), and the

streamed music in the PMA8000D is also Music 1.

NOTE:

All music devices should be turned off for take off, landing, or any critical phase of flight. FAA Regulation
14 CFR 91.21 restricts the use of portable electronic devices.

§91.21 “(a) Except as provided in paragraph (b) of this section, no person may operate, nor may any opera­tor or pilot in command of an aircraft allow the operation of, any portable electronic device on any of the
following U.S.-registered civil aircraft. . .
“(b)(5) Any other portable electronic device that the operator of the aircraft has determined will not cause
interference with the navigation or communication system of the aircraft on which it is to be used.”
You can refer to Advisory Circular 91.21-1A for more information, at http://www.faa.gov

The front panel "Mute" button has four modes, and controls the Mute function for Music 1.
The SoftMute™ circuit will cut the music out whenever there is conversation on the radio, the i ntercom, or

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both, depending on the “Mute” mode selected. When that conversation stops, the music returns to the previ­ous level comfortably, over a second or so.

The mute mode functions are controlled through sequential pushes of the Mute button, and include annunci­ations of the mode selected.

Mode 1 - music will mute with either intercom or radio - MUTE button is lit. Voice annunciation is "mute
on."

Mode 2 - “Karaoke” mode - music will not mute except during transmissions.- MUTE LED is OFF. Annun­ciation is "mute off."

Mode 3 - Radio will mute music, but intercom will not mute music - MUTE LED is OFF. Annunciation is
"radio mute."

Mode 4 - Radio will not mute music, intercom will mute music - MUTE LED is OFF. Annunciation is "in­tercom mute."

♫ Music

Intercom

Radio

Annunciation

LED

Mode 1

Muted

Muted

“Mute on”

on

Mode 2

♫♫“Mute off”

off

Mode 3

♫

Muted

“Radio mute”

off

Mode 4

Muted

♫

“Intercom mute”

off

The passenger’s intercom also has a SoftMute™ circuit. If the passengers hear the radio, or talk on the in­tercom, the music will mute. If the audio panel is in CREW mode, then the radio reception will not affect
the passenger music.

Passengers also have a Karaoke Mode. If the passengers are listening to the music 1 input or front panel
input, their Karaoke Mode is controlled by the front panel “Mute” button. If the passengers are listening to
the music 2 input, their Karaoke Mode is activated by holding the AUX and MUTE buttons for more then
one second.

3.8.1 Music in Pilot ISO mode

If desired, the pilot can elect to hear Music #1 and/or front panel jack, in the ISO mode. While the intercom
is in ISO mode, push the Function (TEL) and ICS buttons at the same time. This mode will be indicated by
the ICS ISO LED blinking slowly (once in every 5 seconds). The pilot will now hear Music #1 and/or front
panel jack, and it will mute in accordance with the Mute mode as described in §3.8. , this feature is reset at
power cycles

3.9 Utility Jack

The 2.5-millimeter (3/32”) jack on the front of the PMA8000D has two functions:

 Advisory audio input
 Music input

The use of this jack is controlled by three Smart Function Keys (SFK) controlled from the front panel. See
Section 3.11 — Smart Function Keys.

3.9.1 Audio Advisory Input

The front jack can be used as a priority advisory input for auxiliary systems such as a GPS terrain advisory
or portable traffic watch system. To prevent radio or intercom from muting this input, press the “Mute”
button.

3.9.1.1 Smart Jack Function

When the PMA8000D has a signal on music #1 input coming in from the rear connector, the front panel

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jack automatically becomes a Priority Advisory input, and is heard in the crew headphones.

NOTE

The front jack is no substitute for the certified installation of alerts such as the GPS waypoint or autopilot
tones. These still must be hard wired into the back by your installer. The front jack input will be muted by
radio or intercom unless music is actively playing in the rear connector. Consequently, it is possible that an
alert may be missed unless the mute mode is deselected.

3.9.2 Music Input

When used as a music input, the front panel jack is treated as Music #1 (except the passengers will not be
able to hear the front panel jack in “Music #1 all headsets). However, thanks to the function controls, it can
be distributed to all users (Alternate Music Distribution), depending on the intercom mode (,must be in the
ALL mode). A patch cord is available with 2.5 mm to 3.5 mm (3/32” to 1/8”) adapter cord (PS Part Number
425-006-2535).

3.10 Music Distribution

Source

Pilot Audio

Panel

Copilot Audio

Panel

Passenger Intercom

Pilot Panel Music 1

Yes

No

No

Pilot Panel Bluetooth

Yes

No

No

Copilot Panel Music 1

No

Yes

“Music 1 All Headsets” & “Al-
ternate Music Distribution”

Copilot Panel Bluetooth

No

Yes

“Music 1 All Headsets” & “Al-
ternate Music Distribution”

Copilot Panel Music 2

No

No

Yes, in “Standard Music Distribu-
tion,” Alternate Music Distribu-

tion, and Crew Mode

Expansion Music Input

No

No

Yes (will be combined with Copi-

lot’s music is supplied).

Table 3-2 Music Sources

If the passengers want to hear the music input through the front panel jack, the audio pane MUST be in Al­ternate Music Distribution, and the intercom must be in the ALL or ISO mode.

3.10.1 Music Function (C) (Music Distribution Control)(Copilot’s audio panel only)
Music Function (Mute button) allows you either send the Music 1 input to intercom stations connected to

the copilot’s panel, all of the time, or have other distribution rules apply to your music inputs.
When “Music one all headsets” is selected, Music 1 (from the rear connector input, Pins J2 23 & 24 only)

will be distributed to all headsets and is independent of the intercom mode switch. Therefore, even in the
CREW mode, the passengers will hear Music 1, even though they will not hear the intercom or radios.

This mode allows you to use a single in-flight entertainment source aboard, and to send it everywhere, even
in crew mode. The music muting will be normal, and follow the selected mode of the crew or passengers.

Music function also allows you to configure your music to be either independent of the intercom mode, or
to make Music 2 dependent on the intercom mode.

When you press Music function again, you’ll hear, “Alternate Music distribution.” In this case, Music 2 will
be active only when the intercom is in the CREW mode, and only the passengers will hear it. This distribu­tion is similar to other brands of audio panels. It allows the passengers to have their music source come on
only when they are not hearing the crew. In addition, the front panel jack input will be distributed to the
passengers in ALL and ISO mode.

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page 3-9 Rev. 6, Oct. 2014

Press again, and you will hear “Standard Music Distribution.” In this mode, Music 2 becomes active, and

will always be presented to the passengers on the intercom. Music 1 is only available to the pilot and copi­lot. The intercom mode switch doesn’t have any affect on the music distribution.

When the music is standard, Music 1 will always go to the pilot and copilot positions, and is never heard by
the passengers. Music 2 is always heard by the passengers, and never heard by the pilot and copilot.

This mode is useful if your passengers have a different interest in entertainment or are watching a DVD, but
do not want to be excluded from the intercom conversations.

The pilot and copilot will always hear Music 1 through the unit rear connector, or a source plugged into the
front panel jack. This is present in ALL and CREW intercom modes, and available to the copilot position in
ISO mode.

The copilot can hear this music source in ISO mode, if desired, as follows: In the ISO mode, hold the Func­tion (TEL) button, and press the ICS mode button for more than one second. The ICS mode LED will blink
slowly to indicate music is connected to the pilot headset, although the intercom is not.

Music 2 is provided to the passenger positions regardless of intercom mode, when the audio panel is in
Standard Music Distribution, and also in Alternate Music Distribution, but only if the intercom is in the
CREW mode. The pilot and copilot can never hear Music 2, under any condition.

If the passengers always want to hear the source in Music 1, input through the rear connector, regardless of

the intercom mode (ISO/ALL/CRW), select “Music 1 all headsets.”

3.10.2 Music 1 Volume

In general, we recommend adjusting the entertainment volume at the sources, and only using this as a
master gain control. However, the Music 1 PMA8000D input can be adjusted from the front panel, if
desired, by pressing the combinations of keys listed.

The Music 1 volume can be adjusted from the front panel, if desired, by pressing the Music Volume

(SPR) button. When you press and hold the SPR button for more than one second, you’ll hear a chime, and

then the music will either increase or decrease, depending on the last operation. If the music is decreasing,
and you want it louder, release the button, and then hold it again until there a chime, followed by increasing
music. The chime volume is not related to the music volume.

Note: Since it is possible to turn the volume completely off, you may need to turn the volume up if you
don’t hear music when you expect to.

It will take about 10 seconds to go from minimum to maximum volume.
This volume control does NOT affect the volume from the front panel music jack input.

NOTE: Increasing the volume to max level has the potential of increasing undesired noises that could
be coming from music sources. It’s preferred to leave this volume factory set a mid-scale and use
your music source to increase the gain.

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page 3-10 Rev. 6, Oct. 2014

3.11 Smart Function Keys (SFK)

With Virtual Tech Support, the configuration process is self-directed. SFK annunciations are heard by the
pilot and copilot positions only. SFK annunciations will be heard by the copilot, even when the audio panel
is in pilot isolate mode. These annunciations will be stopped by any audio received on the com radio select­ed for transmitting.

Pilot Audio Panel

Function A

COM 3 button

Function B

AUX button

Function C

MUTE button

Alternate Intercom

mode

Monitor Mode

Music Distribution

State 1

State 2

State 1

State 2

State 1

State 2

State 3

“Alternate

intercom
function”

“Standard

Intercom

Function”

“Monitor

on”

“Monitor

off.”

“Music On”

“Music Off”

Table 3-3 – Smart Function Key Functions, PMA8000D

Copilot Audio Panel

Function A

COM 3 button

Function B

AUX button

Function C

MUTE button

Alternate Intercom

mode

Monitor Mode

Music Distribution

State 1

State 2

State 1

State 2

State 1

State 2

State 3

“Alternate

intercom
function”

“Standard

Intercom

Function”

“Monitor

on”

“Monitor

off.”

“Standard

music

distribution”

“Alternate

music

distribution”

“Music 1 all

headsets”

Table 3-4 – Smart Function Key Functions, PMA8000D

Figure 3-2 Smart Function Keys

These functions are non-essential and non-required and as such are only an accessory capability.

They don’t affect the audio panel’s primary function as a selector panel, aircraft intercom, or
marker beacon receiver. You can’t do anything with these buttons to prevent the PMA8000D from

doing its main job.
Looking at the front panel you’ll notice that the COM 3, AUX, Mute and SPR buttons have “Function” as-

signments.
To use these function keys A, B, C – press and hold the desired key, “Intercom” (COM 3) “Monitor”

(AUX) “Music” (Mute) and “Music Volume” (SPR).

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page 3-11 Rev. 6, Oct. 2014

There are three special functions. Function Button “A” is related to the front panel utility jack (J) and tells

the audio panel to treat the jack either as music, or as what we call an unswitched, priority audio source.
Function Buttons “B” and “C” control how music is distributed in your airplane.
There are multiple music sources available to the PMA8000D. Music 1 input can be streamed from a Blue-

tooth source, input through the front jack, OR the Music 1 input at the rear connector (Pins 23 and 24 J2).
Music 2 is wired into the rear connector, only (Pins 26 and 27, J2)

3.11.1 Intercom Function (A) (Alternate Intercom Function)
Intercom Function (A) controls the distribution of aircraft radio within the intercom, as well as passenger

intercom muting. In the “standard intercom function” mode, aircraft radios are distributed to all, when the
intercom is in the ALL mode. In CREW mode, only the pilot and copilot positions will hear aircraft radios.

When the Intercom function is toggled into “Alternate Intercom Function,” the passengers will NOT hear
aircraft radios, even in the all mode. They will be able to converse with the crew. However, when the
aircraft radio becomes active, the intercom audio from the passengers is muted, allowing the crew to focus
on the radio. The passengers will still be able to talk to each other.

3.11.2 Monitor Function (B) (Monitor Mode)
Monitor Function (B) (Aux button) will activate or deactivate the COM radio monitor function. When the

Monitor is on, the audio from the COM that is selected for reception only (only top LED illuminated) will
be muted when the radio that is selected to transmit becomes active.

This function is useful if you are copying weather from AWOS on COM 2, but have clearance delivery
tuned in on COM 1. With the monitor active, the AWOS audio will be silenced when clearance delivery
starts to speak.

When you press AUX button for more than one second, the audio will announce “Monitor on,” when acti-

vated, and “Monitor off” when deactivated.

NOTE: This mode is NOT remembered through power cycles, to prevent inadvertent blocking of desired
audio on your next trip.

3.12 Bluetooth® interface

The PMA8000D has a Bluetooth interface. The audio panel is always “discoverable,” so you just need to
search for the PMA8000D from your Bluetooth-equipped phone or music source. The default access code is
0000, if needed. Once the PMA8000D has been “paired” with your Bluetooth device, the TEL distribution
will act as described in § 3.11.

Calls are answered or made from the telephone handset. You can disconnect from the handset.

3.12.1 Pairing and unpairing Bluetooth devices

The PMA8000D can be paired with up to eight individual devices. When that number is exceeded, one de­vice will be automatically un-paired to allow the new device. The device eliminate will be selected at ran­dom by the Bluetooth module. Hint, if your old phone is not recognized by the PMA8000D, you may simply

need to re-pair.

3.12.1.1 Paring separate music and telephone devices

It is possible to use a different music source (iPad, iPod with Bluetooth adapter, Bluetooth enabled laptop,
etc) and telephone. However, the music source must be paired first, before the telephone, if the telephone
also has music streaming capability. Otherwise, the Smartphone will also take over the music streaming.
Note: iPhones will probably take control over other music devices. In Droid you may select music or phone
only. With Blackberry, you may have to manually select the PMA8000D as audio source for each call.

3.12.1.2 Changing access codes

If desired, you can change the 4-digit code needed to pair your device. Hold the button shown in the fol­lowing table, and turn the PMA8000D on. You will hear a tone indicating that the code was changed.

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page 3-12 Rev. 6, Oct. 2014

Hold button on power up

Pairing Code

COM 3

0000 (default)

NAV 1

1234

NAV 2

1111

3.12.2 Power on announcement

If the Intercom or Music Distribution is changed from the factory default, the configuration will be played
when the unit is powered up. To defeat this announcement, press the COM 3 XMT and AUX buttons for
more than two seconds. The feature can be enabled again using the same sequence.

3.13 Internal Recorder and Playback

The PMA8000D comes equipped with an internal recorder. This digital system stores the last incoming
audio from the radio you have selected for transmit. It can store as many of 8 incoming messages, and up to
60 seconds of audio. The pilot and copilot hear the playback. It is also possible to modify the unit to ex­clude the copilot from the playback, and annunciation playback. Contact PS Engineering, for more details.

Recording is automatic. To play back the last recorded message, press and hold the COM Receive pushbut­ton associated with the selected radio transmitter for about one (1) second. You can either wait for the mes­sage to finish playing before accessing the prior message, or cancel the current playback and step backward.
To cancel the playback, press and hold the COM receive playback button for two seconds (2). The next
time the button is pressed for one (1) second, the next earlier message will be heard. The playback will

stop whenever there is more incoming selected com audio, and the message can be replayed from

the beginning by pressing the selected
COM Receive button again for 1 second

Figure 3-3 Playback Controls

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Page 4-1 Rev. 6, Oct. 2014

Section IV – Warranty and Service

4.1 Warranty

In order for the factory warranty to be valid, the installations in a certified aircraft must be accomplished by
an FAA-(or other ICAO agency) certified avionics shop and authorized PS Engineering dealer. If the unit is
being installed by a non-certified individual in an experimental aircraft, a factory-made intercom harness
must be used for the warranty to be valid.

PS Engineering, Inc. warrants this product to be free from defect in material and workmanship for a period
of three (3) years from the date of sale. During the first twelve (12) months of the three-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 consultation with a factory technician. For the remaining twenty-four (24)
months of the three-year warranty period, PS Engineering, Inc., at its option, will send a similar replace­ment unit at the customers expense if the unit should be determined to be defective after consultation with
an authorized PS Engineering dealer.

All transportation charges for returning the defective units are the responsibility of the purchaser. All do­mestic transportation charges for returning the exchange or repaired unit to the purchaser will be borne by
PS Engineering, Inc. The risk of loss or damage to the product is borne by the party making the shipment,
unless the purchaser requests a specific method of shipment. In this case, the purchaser assumes the risk of
loss.

This warranty is not transferable. Any implied warranties expire at the expiration date of this warranty. PS
Engineering SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. This
warranty does not cover a defect that has resulted from improper handling, storage or preservation, 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.

All items repaired or replaced under this warranty are warranted for the remainder of the original warranty
period. PS Engineering, Inc. reserves the rights to make modifications or improvements to the product
without obligation to perform like modifications or improvements to previously manufactured products.

4.2 Factory Service

The units are covered by a three-year limited warranty. See warranty information. Call PS Engineering, Inc.
at [phone] before you return any unit. This will allow the service technician to provide any other
suggestions for identifying the problem and recommend possible solutions.

After discussing the problem with the technician and you obtain a Return Authorization Number, ship prod­uct to:

PS Engineering, Inc.
Attn: Service Department
9800 Martel Rd
Lenoir City, TN 37772
[phone] FAX [phone]
Email: [e-mail]

Units that arrive without an RMA number, or telephone number for a responsible contact, will be
returned un-repaired. PS Engineering is not responsible for items sent via US Mail.

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Appendix A Rev. 6, Oct. 2014

Appendix A – PMA8000D Installation Drawings

J2 J1

Viewed from Back

15
30

44

1
16

31

15
30

44

1
16

31

Ground Lug
475-009-0001 (x2)

Screw 4-40 x 1/4"
475-440-0001 (x2)

Back plate assy

475-009-0001
ground lug (x2)

475-440-0001 (x2)
Screw w/washer

Ground lug detail

Rear plate detail (not to scale)

0.37in

3.87in

5.53in

6.04in

0.36in

0.96in

1.28in

6.31in

1.28in

Caution: Apply steady pressure to the bezel while screwing the unit into the tray to

ensure even seating of the unit and connectors.

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Appendix B October 2014

Appendix B –PMA8000D Radio Interconnect

NOTE 19

NOTE 23

NOTE 23

J1

29

44
43

3
4
5
6

31
32

13
14
15
30

9
10
11
12

NAV
1

Com #1 Com #2 Com #3

NAV
2

DME

UNSW
1

UNSW
2

Com 3 Mic Key

Com 3 Lo

Com 3 Mic Audio Hi

Com 3 Audio Hi

Com 2 Mic Audio Hi

Com 2 Lo

Com 2 Mic Key

Com 2 Audio Hi

Com 1 Mic Audio Hi

Unsw 1 Aud Hi

Unsw Aud 1 Lo

Com 1 Lo

Com 1 Mic Key

Com 1 Audio Hi

Nav 1 Lo

Nav 1 Audio Hi

Nav 2 Lo

Nav 2 Audio Hi

UNSW
3

UNSW
4

AUX

17
18
19
20

ADF

ADF Lo

ADF Audio Hi

7
8

DME Lo

DME Audio Hi

21
22

AUX Audio Hi

AUX Lo

23

Unsw 2 Aud Hi

Unsw Aud 2 Lo

Unsw 3 Aud Hi

Unsw Aud 3 Lo

Unsw 4 Aud Hi

Unsw Aud 4 Lo

15
36

PMA8000D
J2 Conn.

29

44
43

3
4
5
6

31
32

13
14
15
30

9
10
11
12

Com 3 Mic Key

Com 3 Lo

Com 3 Mic Audio Hi

Com 3 Audio Hi

Com 2 Mic Audio Hi

Com 2 Lo

Com 2 Mic Key

Com 2 Audio Hi

Com 1 Mic Audio Hi

Unsw 1 Aud Hi

Unsw Aud 1 Lo

Com 1 Lo

Com 1 Mic Key

Com 1 Audio Hi

Nav 1 Lo

Nav 1 Audio Hi

Nav 2 Lo

Nav 2 Audio Hi

17
18

19
20

ADF Lo

ADF Audio Hi

7
8

DME Lo

DME Audio Hi

21
22

AUX Audio Hi

AUX Lo

23

Unsw 2 Aud Hi

Unsw Aud 2 Lo

Unsw 3 Aud Hi

Unsw Aud 3 Lo

Unsw 4 Aud Hi

Unsw Aud 4 Lo

15
36

PMA8000D
J2 Conn.

Data +

24
26

Data -

24
26

Data +

Data -

MKR Ant.

RG-58A/U Coax

36
37
38

39

Ext. Marker Lamp (Blue)

Ext. Marker Lamp (White)

Ext. Marker Lamp (Amber)

MM Sense Input

White Lamp Output

Blue Lamp Output

Amber Lamp

MM Sense

Ext. Marker Indicator

1
2

27
28

Speaker Load

Speaker Load

MKR Ant.

RG-58A/U Coax

36
37
38

39

Ext. Marker Lamp (Blue)

Ext. Marker Lamp (White)

Ext. Marker Lamp (Amber)

MM Sense Output

White Lamp Output

Blue Lamp Output

Amber Lamp

MM Sense

1
2

27
28

Speaker Load

Speaker Load

Ext. Marker Indicator

MKR Ant. Gnd

MKR Ant. Gnd

NOTE 16

NOTE 18

NOTE 22

NOTE 22

NOTES 15, 16, 17. 18

NOTE 16, 17

J1

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Appendix C Rev. 6, Oct. 2014

Appendix C – PMA8000D Audio Interconnect

22

20

31
16
1

24
23
25

32
33
34

X-tie Audio Out

PTT Sense

Pilot Mic Lo

12

Playback

PMA8000D J2
CONNECTOR
(Sub-D 44-pin male on tray)

19

________
PA Active

Ent. #1 Audio (R)
Ent. #1 Audio (L)
Ent. #1 Audio Lo

Ent. #1 Input

5
6
7

Pilot Phones (R)
Pilot Phones (L)
Pilot Phones Lo

Pilot PhonesJack

14/28/5 Volt Lights Hi

14 V Lights Hi/28V Lights lo

Lights Lo

8
9

Ground Lug

Airframe Ground

11-33 VDC

PA Mute

Speaker Hi
Speaker Lo

44
43

Swap
Switch

Swap

10
11

Cockpit Speaker

7
6
5

28 V Lights Hi

28-Volt lights lo

7
6
5

14V /5V Lights Hi

14-Volt 5V lights lo

5A

Breaker

See

Note

3

Note 6

20

31
16

1

24
23
25

32
33
34

Playback

19

PA Active

Ent. #1 Audio (R)

Ent. #1 Audio (L)
Ent. #1 Audio Lo

Ent. #1 Input

5
6
7

Copilot Phones (R)
Copilot Phones (L)
Copilot Phones Lo

Copilot PhonesJack

14/28/5 Volt Lights Hi

14 V (5VDC) Lights Hi/28V Lights lo

Lights Lo

8
9

11-33 VDC

Speaker Hi
Speaker Lo

44
43

Swap

Cockpit Speaker

5A

Breaker

See

Note

3

Note 12

33
34
35

Pilot Mic Audio

Pilot PTT

Pilot Mic Lo

Pilot Mic Jack

J1

J2

33
34
35

Copilot Mic Audio

Copilot PTT

Mic Lo

Copilot Mic Jack

J2

J1

PTT Sense

MKR Low Sense

14
13

Copilot Mic Low

MKR Low Sense

14
13

Copilot Panel

17

No Connect

22

Pilot's Panel

Copilot's Panel

35

37

3

X-tie Audio Input

3

X-tie Audio In X-tie Audio Out

35
36
39

Expansion Unit #1
11636

Expansion Lo

Expansion Audio Input

10
11

40
41

15

2

3

14

1

Expansion Audio Output (L)
Expansion Audio Output (R)

PMA8000D J1

Expansion Power

37
38
41

Expansion Unit #2
11636

Expansion Lo

Expansion Audio Input

15

2

3

14

1

Expansion Audio Output (L)
Expansion Audio Output (R)

Expansion Power

27
26
28

Ent. #2 Audio (R)

Ent. #2 Audio (L)
Ent. #2 Audio Lo

Ent. #2 Input

MKR Low Sense Gnd

MKR Low Sense Gnd

4

CVR Out

42

CVR Low

4

42

CVR Out
CVR Low

NOTE 5

NOTE 5

NOTE 4

NOTE 6

NOTES 9, 14

NOTE 21

NOTE 10

NOTE 13

NOTE 8

NOTE 9, 14

NOTE 20

NOTE 8

NOTE 7

AIRFRAME

GROUND

NOTE 20

NOTE 5

NOTE 5

NOTE 10

NOTE 12

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Appendix C Rev. 6, Oct. 2014

INTERCONNECT NOTES:

1. All wiring must conform to MIL STD 22750 or 27500.

2. All wiring must be #24 AWG or larger, unless otherwise noted.

3. Pins 8 and 9 connected through a 5 A breaker Power and Ground to be #18 AWG or larger. For
best results, power and ground wires should be twisted together for greater noise immunity.

4. All shields should be grounded at respective audio panel only as shown, other end remains float­ing.

5. All phone and mic jacks must be floating from ground. Insulating washers can be purchased from
PS Engineering, 865-988-9800, P/N 475-003-0001 (Flat Washer) & P/N 475-003-0002 (Shoulder
Washer).

6. Passengers’ intercom expansion unit (P/N 11636R) is connected to copilot audio panel as shown.
Each expansion can support up to 6 passengers. See § 2.5.5.

7. Pin 17 is grounded on copilot panel only.

8. Optional switch for IRS playback.

9. Music 1 in pilot’s panel is only available to the pilot station. Music 1 in copilot panel is available

to that station, and passengers’ intercom. Music 2 is only connected to copilot’s audio panel, and

feeds the expansion unit only. For music distribution information, see § 2.5.1

10. PA Mute is a TTL level logic output that is pulled low when PTT active. Pin 19 is switched to
ground when the PA mode is activated, placing pilot microphone on speaker output while pilot
PTT active. See Sect 2.4.12

11. Reserved

12. For music distribution information, see Section 2.5.1.

13. Reserved

14. Use care when connecting music signal and ground inputs. Refer to section 2.4.1.1 for more in­formation. Failure to properly interface music can result in added noise.

15. Reserved.

16. Unswitched #2 is selectable over the cockpit speaker

17. Unswitched input #3 is adjustable

18. Unswitched 4 audio low connected to copilot or pilot phone low as convenient, but should NOT
go to music low.

19. Serial Data Interface

20. Grounding Pin 13 places marker Receiver in High Sense mode.

21. For lighting details see §2.4.9

22. Speaker loads may be required on some older transceivers, consult radio manufacturer.

23. Marker output goes positive when marker lamp is active. Contact PS Engineering to interface to
Sandel SN3308.

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Appendix D Rev. 6, Oct. 2014

Appendix D – Instructions for FAA Form 337 and continuing air-

worthiness

8.1 Instructions for FAA Form 337, Audio Panels

One method of airworthiness approval is through an FAA Form 337, Major Repair and Alteration (Airframe, Powerplant, Pro­peller, or Appliance) In the case of the PMA8000D, you may use the following text as a guide.

Installed audio selector and 6-place intercom, PS Engineering PMA8000D, part number 050-890-(XXXX) in ( location
) at station . Installed per AC43.13-2, Chapter 2, paragraph 23 (Instrument Panel Mounting). Installed per PS En­gineering Installation Operators Manual p/n 200-890-(XXXX), revision (), dated ( ).

These units are FAA-Approved under TSO C50c for audio amplifiers, and/or TSO C35d for Marker Beacon Receivers,
and meets appropriate environmental qualifications outlined in RTCA DO-160D as appropriate or this aircraft.

Interface to existing aircraft radios in accordance with installation manual and in compliance with practices listed in
AC43.13-2, Chapter 2. All wires are Mil-Spec 22759 or 27500. Connection to aircraft dimmer bus is
____________________. Power is supplied to the unit through a 3A circuit breaker (type and part number), and total
electrical load does not exceed % of the electrical system capacity with the PMA8000D added.

Aircraft equipment list, weights and balance amended. Compass compensation checked. A copy of the operation instruc­tions, contained in PS Engineering document 202-890-( ), revision ( ), dated ( ), is placed in the aircraft records. All work
accomplished listed on Work Order .

8.2 Instructions for Continuing Airworthiness, Audio System

Sample ICA Checklist for PS Engineering Audio System:

Section

Item

Information

1

Introduction

Installation of audio control panel with integrated marker beacon receiver and
intercommunications system.

2

Description

Installation as described in manufacturer’s installation manual referenced on

FAA Form 337, including interface with other avionics audio as required.

3

Controls

See installation and operator’s guide referenced on FAA Form 337.

4

Servicing

None Required

5

Maintenance Instructions

On Condition, no special instructions

6

Troubleshooting

In the event of a unit problem, place the unit into “off,” “fail-safe” and/or
“emergency” mode. This allows pilot communications using COM 1. Follow
checkout instructions in the installation manual referenced on the FAA Form

337. For a specific unit fault, contact the manufacturer at [phone] for
special instructions.

7

Removal and replacement infor­mation

Removal: Using a 3/32” Allen-head wrench, carefully unscrew the locking
screw located in the center of the unit. While turning the wrench CCW, gently
pull on the EDGES of the bezel until the unit is free from the mounting tray.
Installation: Engage the locking screw at the back. Turn the locking screw CW,
while applying slight pressure to the edges of the bezel. Do not over tighten!

8

Diagrams

Not applicable

9

Special Inspection Requirements

Not Applicable

10

Protective Treatments

Not Applicable

11

Structural Data

Not Applicable

12

Special Tools

None

13

Not Applicable

Not Applicable

14

Recommended Overhaul Periods

None

15

Airworthiness Limitations

Not Applicable

16

Revision

To be determined by installer

PS Engineering

PMA8000D Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-890-0304 Appendix E Rev. 6, Oct. 2014

Appendix E – RTCA DO160D Environmental Qualification Form

Audio Selector Panel/Intercom/Marker Beacon Receiver
Part Number: 050-890-( )
FAA TSO Number: C50c, C35d
Manufacturer: PS Engineering Incorporated 9800 Martel Road Lenoir City TN 37772

Conditions

Section

Conducted Tests

Temperature and Altitude
Low Temperature
High Temperature
In-flight Loss of Cooling
Altitude
Decompression
Overpressure

4.0

4.5.1

4.5.2

4.5.4

4.6.1

4.6.2

4.6.3

Equipment tested to CAT A1 & D1

-55° C Survival, -15°C Low Operating (A1)
+85°C Survival, +70°C High Short Time Operating
Not Applicable, no cooling required

50,000’ unpressurized (D1)

Not Applicable
Not Applicable

Temperature variation

5.2

Equipment tested to Category C

Humidity

6.0

Equipment tested to Category A

Shock

7.0

Equipment tested to Operational test only

Operational

7.2

Equipment tested to Operational test only

Crash Safety

7.3

Equipment tested to Operational test only

Vibration

8.0

Equipment tested to Category M & N

Explosion

9.0

Category X, not tested

Waterproofness

10.0

Category X, not tested

Fluids Susceptibility

11.0

Category X, not tested

Sand and Dust

12.0

Category X, not tested

Fungus

13.0

Category X, not tested

Salt Spray

14.0

Category X, not tested

Magnetic Effect

15.0

Equipment tested to Category Z

Power input

16.0

Equipment tested to Category B

Voltage Spike

17.0

Equipment tested to Category A

Audio Frequency Susceptibility

18.0

Equipment tested to Category B

Induced Frequency Susceptibility

19.0

Equipment tested to Category A

Radio Frequency Susceptibility

20.0

Equipment tested to Category T

Radio Frequency Emission

21.0

Equipment tested to Category B

Lightning Induced Transient Sus­ceptibility

22.0

Equipment tested to Category XXE2
Lightning Direct Effects

23.0

Category X, not tested

Icing

24.0

Category X, not tested

ESD

25.0

Category X, not tested