PS Engineering PMA8000 Installation Manual

9800 Martel Road

Lenoir City, TN 37772

www.ps-engineering.com

P

P

Audio Selector Panel with Marker Beacon Receiver

System Installation and Operation Manual

Patented under one or more of the following;

M

M

High-fidelity Stereo Intercom

FAA-Approved TSO C50c, C35d

No. 5,903,277; 6,160,496 and 6,493,450

A

A

Document P/N 200-890-0000

Revision 10, September 2005

8

8

0

0

0

0

0

0

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

Authorized PS Engineering dealer.

PS Engineering, Inc. 2005 ©

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].

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.......................................................................................................................1-2

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

1.7 EQUIPMENT REQUIRED BUT NOT SUPPLIED................................................................... 1-4

1.8 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 NOISE ............................................................................................................................. 2-2

2.4.2 EXISTING GMA340 INSTALLATION ............................................................................... 2-3

2.4.3 POWER............................................................................................................................ 2-3

2.4.4 COMMUNICATIONS PUSH-TO-TALK ............................................................................... 2-3

2.4.5 AUDIO PANEL INTERFACE .............................................................................................. 2-3

2.4.6 TEL (DUPLEX) FUNCTION FOR CELL PHONES............................................................... 2-3

2.4.7 TRANSMIT INTERLOCK ................................................................................................... 2-4

2.4.8 PATENTED "SWAP" MODE ............................................................................................. 2-4

2.4.9 BACKLIGHTING .............................................................................................................. 2-4

2.4.10 UNSWITCHED INPUTS ................................................................................................... 2-4

2.4.11 PUBLIC ADDRESS MODE .............................................................................................. 2-5

2.4.12 PA MUTE (J2, PIN 12) .................................................................................................. 2-5

2.4.13 MISCELLANEOUS LOGIC OUTPUT (J2, PIN 18)............................................................. 2-5

2.4.14 INTERCOM WIRING ....................................................................................................... 2-5

2.4.15 PLAYBACK BUTTON INSTALLATION (J2, PIN 22- OPTION 1, ONLY)........................... 2-7

2.5 MARKER BEACON INSTALLATION..................................................................................................2-7

2.5.1 MARKER ANTENNA INSTALLATION ............................................................................... 2-7

2.5.2 EXTERNAL MARKER LIGHTS.......................................................................................... 2-7

2.5.3 MIDDLE MARKER SENSE (MARKER VERSION)............................................................... 2-7

2.6 ADJUSTMENTS.................................................................................................................................2-7

2.7 COMMUNICATIONS ANTENNA INSTALLATION NOTES...................................................................2-8

2.7.1 AUDIO ACTIVE OUTPUT ................................................................................................. 2-8

2.8 PMA8000 PIN ASSIGNMENTS .........................................................................................................2-9

2.9 POST INSTALLATION CHECKOUT................................................................................................. 2-10

2.10 UNIT INSTALLATION................................................................................................................... 2-10

2.11 OPERATIONAL CHECKOUT......................................................................................................... 2-10

2.11.1 REQUIRED TEST EQUIPMENT ..................................................................................... 2-10

2.11.2 AUDIO PANEL TEST.................................................................................................... 2-10

2.11.3 MARKER CHECKOUT .................................................................................................. 2-11

2.11.4 TEL CHECKOUT ......................................................................................................... 2-11

PMA8000 Series Audio Selector Panel and Intercom System

Installation and Operator’s Manual

PS Engineering

2.11.5 INTERNAL RECORDER CHECKOUT (OPTIONAL) ......................................................... 2-11

2.12 FINAL INSPECTION......................................................................................................................2-11

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

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

3.2 POWER SWITCH (1) (EMG-FAIL SAFE OPERATION) .................................................................... 3-1

3.3 MICROPHONE (2) (XMT) SELECTION (ALL MODELS)..................................................................3-1

3.3.1 SWAP MODE (SWITCH FROM COM 1 TO COM 2 REMOTELY) ......................................... 3-2

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

3.4.1 SPEAKER AMPLIFIER (5)................................................................................................. 3-2

3.5 SPLIT MODE.................................................................................................................................... 3-3

3.5.1 MUTE BUTTON, SPLIT MODE ICS (6) ............................................................................ 3-3

3.6 INTERCOM OPERATION .................................................................................................................. 3-3

3.6.1 INTELLIVOX® VOX-SQUELCH ....................................................................................... 3-3

3.6.2 INTERCOM VOLUME CONTROL (7)................................................................................. 3-4

3.6.3 INTERCOM MODES (8) .................................................................................................... 3-4

3.7 TELEPHONE MODE (9)....................................................................................................................3-5

3.8 MARKER BEACON OPERATION (10)...............................................................................................3-6

3.9 INTERNAL RECORDER SYSTEM (OPTION 1)...................................................................................3-6

3.10 OPERATION ...................................................................................................................................3-6

Section IV- Warranty and Service ............................................................................. 4-1

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

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

Appendix A External PTT Hook Up ........................................................................... A

Appendix B – PMA 8000 Installation Drawings..........................................................B

Appendix C, J1 Interconnect ........................................................................................C

Appendix D, J2 Connector Interconnect...................................................................... D

Appendix E- Instructions for FAA Form 337 and continuing airworthiness ............... E

9.1 INSTRUCTIONS FOR FAA FORM 337, AUDIO PANELS ......................................................................E

9.2 INSTRUCTIONS FOR CONTINUING AIRWORTHINESS, AUDIO SYSTEM..............................................E

Appendix F RTCA DO160D Environmental Qualification Form................................ F

Rev Date Change

1 3/25/04 1st Release
2 5/5/04 Clarify/correct installation kit, added note regarding the screw lengths.
3 5/13/04 Change connector back shells to 1-piece, made left/right phasing consis-

tent throughout and corrected section 2.4.3.
4 6/11/04 Change front panel pictures and button layout
5 8/23/04 Corrected P/N, text in section 2.4.1
6 11/19/04 Clarified power wiring in section 2.4.3 and figure 2-1
7 3/16/05 Added list of required test equipment in section 2.11
8 5/24/05 Corrected text description for Unswitched 3 & 4, sect 2.4.10
9 6/22/05 Added note to section 2.4.13 for DME on AUX and logic switching
10 7/14/05 Added info on PA Jumper (J4) to section 2.4.12

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PMA8000 Series Audio Selector Panel and Intercom System

Installation and Operator’s Manual

PS Engineering

Section I GENERAL INFORMATION

1.1 INTRODUCTION

The PMA8000 represents another evolutionary step in cockpit audio control and intercommunications util-

ity. Using our patented IntelliVox® design, this unit eliminates the requirements for intercom squelch ad-

justments. The unit is designed for outstanding ergonomics and visually defined mode annunciation and
selection.

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 PMA8000.

1.2 SCOPE

This manual provides detailed installation and operation instructions for the PS Engineering PMA8000­series of Audio Selector Panel/Intercom Systems. This includes the following units:

Description Part Number

Model
PMA8000 Stereo Audio Selector Panel with Marker Beacon 050-890-0100
Option 1 Same as above with Digital Recorder added 050-890-0200

Where the functions are identical to all units, it will be referred to herein as a PMA8000. Otherwise, the
applicable units will be specified.

1.3 EQUIPMENT DESCRIPTION

The PMA8000-series is a state of the art audio isolation amplifier and audio selector that contains an auto­matic voice activated (VOX) intercom system. It can switch two transceivers (Com 1, Com 2 ) and six re­ceivers (Nav 1, Nav 2, ADF, DME, MKR and AUX).

A full duplex TEL mode allows the PMA8000 to act as an audio interface between aircraft headphone and
microphones and specific aircraft approved

Warning

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

There are four unswitched inputs, available for traffic or EGPWS, autopilot disconnect, and/or radar al­timeter warning.

Push buttons 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. All Unswitched inputs are always presented to the aircraft speaker.

Push button switches selects one of the communication transceivers for the pilot and copilot position, and
allows radio transmission. In "Split Mode" the PMA8000 has the ability to allow the pilot to transmit on
com 1 while the copilot can transmit on com 2. A fail-safe mode connects the pilot 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.

A six-station voice activated (VOX) intercom is included in the PMA8000. This system has PS Engineer-

ing’s patented IntelliVox® circuitry that eliminates manual adjustments. The system contains six separate

VOX mic circuits, and only opens the microphone channel in use.

: Use of non-aviation approved cellular telephone equipment may be prohibited by regulation.

For airborne use, the PMA8000 must be interfaced with an approved system.

(FAA/FCC) cellular telephone equipment.

The intercom system incorporates pilot isolate, all and crew modes, two independent stereo music inputs
with "Soft Mute," and flashing LED indications for transmit indications. Intercom control is through two
concentric front panel volume controls and a pushbutton intercom mode switch. The small volume knob

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PS Engineering

controls the intercom level for the pilot and copilot, while the large knob controls the passenger intercom
volume. Intercom squelch is automatic.

A 3-light Marker Beacon receiver is integrated in the PMA8000. This provides the necessary Marker Bea­con lights and audio indications necessary for 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.

1.4 APPROVAL BASIS –

TSO Approval.

The PMA8000-series Audio Selector Panels are FAA approved under TSO C50c (Audio Amplifiers) and
TSO C35d (Marker Beacon Receivers).

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.

1.5 SPECIFICATIONS

TSO COMPLIANCE

Marker Beacon: C35d, Class A
Audio Selector/Intercom: C50c, Class A

APPLICABLE DOCUMENTS: RTCA/DO-214 RTCA/DO-143 RTCA/DO-160D

RTCA/DO-178B DO-254

ENVIRONMENTAL Qualifications:

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)

WEIGHT

PMA8000 Unit
Rack with connectors

POWER REQUIREMENTS (Including Internal Lighting):

Voltage: 11 to 33 VDC
Maximum Current: 2.5 Amp (Externally protected by a 5A pull-type

A1D1CABSMXXXXXXZBABATBXXE2XXX

Depth behind panel 7.15 in. (18.16 cm)

1.34 lb. (0.61 kg)

0.51 lb. (0.24 kg)

breaker)

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PS Engineering

Audio Selector Specifications

Audio selector panel input impedance:

510 Ω

Input Isolation: -60 dB (min.)
Speaker Muting: -60 dB (min.)
Speaker Output (into 4 Ω) with no clipping

14 VDC:
28 VDC:

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

Receiver Inputs: 9 (Com 1, Com 2, TEL, Nav 1, Nav 2, ADF,

DME, MKR, AUX)

Unswitched Inputs: 4
Transmitter Selections: 4 (Com 1, Com 2, TEL

Com1/2)

Speaker Impedance:
Headphone Impedance:

4 Ω
150 – 1000 Ω

Headphone Output: 38 mW each headset, no clipping <1% THD typi-

cal

Microphone Impedance:

150 - 600 Ω

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:
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:

Selectivity: -6 dB at ±10 kHz

External Lamp Output: 7.5 (±4 VDC unloaded, at maximum brightness) VDC

MM Sense: Active high (4.5 ± 1.0VDC)

<1% THD @ 38 mW into 150Ω

Capable of: (preset at factory for field application)
1000 µVolts (Hard) (360 to 570 µV soft)
200 µVolts (Hard) (130 to 200 µV soft)

-40 dB at ±120 kHz

positive when active, max. current 125 mA

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Installation and Operator’s Manual

1.6 EQUIPMENT SUPPLIED

1 ea. of the following units:

Model Description Part Number

PMA8000 PMA8000 Audio Panel with Marker Beacon and Stereo intercom. 050-890-0100
PMA8000 with option 1 Add Internal recorder to PMA8000 050-890-0200

PMA8000 Installation Kit: 250-890-0000

Description Quantity Part

PMA8000 installation rack assembly 1 430-890-0040
PMA8000 Rack back plate 1 430-890-0050

44-pin connector kit 2 120-891-2045­Backshell, connector 2 625-025-2465
4 40 X 7/16 screw w/nylon patch 4 475-440-0007
4 40 X 1/4 screw w/lock washer 4 475-440-0004
4-40 Lock Nut 5 475-013-0001
Solder Lug 1 475-009-0001
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

Number

1.7 EQUIPMENT REQUIRED BUT NOT SUPPLIED

a. Circuit Breaker: 1 ea; 5 amp PULL TYPE REQUIRED for PMA8000
a) Speaker, 4 Ω
b) Headphone Jacks (Stereo, as Required)
c) Microphone Jacks (as Required)
d) Headphones, 150 Ω (Stereo), up to 6 as required
e) Microphones, up to 6 as required
f) Marker Antenna (75 MHz, VSWR <1:1.5, and appropriate for the airspeed)

g) Interconnect Wiring

1.8 LICENSE REQUIREMENTS

None

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PMA8000 Series Audio Selector Panel and Intercom System

Installation and Operator’s Manual

PS Engineering

Section II - Installation

2.1 GENERAL INFORMATION

2.1.1 SCOPE

This section provides detailed installation and interconnection instructions for the PS Engineering
PMA8000-Series 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 and knowledge.

2.1.2 Certification Requirements

NOTE

The PMA8000 requires specialized knowledge and tools for an effective installation. An

appropriately rated Certified Aircraft Repair Station must install this equipment in ac-

cordance 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 in-

dividual 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 (B). 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 PMA8000 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

The PMA8000 must be rigidly mounted to the instrument panel of the aircraft structure and within view
and reach of the pilot position(s). Installation must comply with FAA Advisory Circular AC 43.13-2A. The
unit may be mounted in any area where adequate clearance for the unit and associated wiring bundle exist.

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. Carefully slide the unit free of the tray. Set
the unit aside in a safe location until needed. Install the tray using six clip nuts (475-630-0002), and six

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PMA8000 Series Audio Selector Panel and Intercom System

Installation and Operator’s Manual

PS Engineering

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 connectors mate with two 44-pin connectors in the PMA8000. The connectors are a sub miniature
crimp-type, and require the use a hand crimp tool, from table below (or equiv.). The connectors are
mounted to the tray back plate with #4-40 screws (475-440-0007), from the inside of the tray. Ensure that
proper strain relief and chafing precautions are made during wiring and installation, using the cable clamp
(625-001-0002).

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 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 43.13-2A 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 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 PMA8000 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 PMA8000 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 PMA8000 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
2- or 3-conductor, shield wire as shown on the installation-wiring diagram.

The shields can be daisy-chained together, and then connected to a ground lug mounted on the corner of
the back plate.

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.

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PS Engineering

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 Existing GMA340 Installation

If the installation replaces a GMA340, no changes are required except to incorporate the new capabilities
of the PMA8000.

2.4.3 Power

The PMA8000-Series are 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. Con­nect airframe ground to J2 Pin 10 and 11 only. No dropping resistors are required.

2.4.4 Communications Push-to-Talk

An important part of the installation is the PTT (Push-To-Talk) switches that allow the use of your aircraft
communications radio for transmissions. There are three typical configurations that can be used. Select the
case that best fits the installation. Only the person who presses their PTT switch will be heard over the ra­dio. If the pilot and copilot both use the PTT, the only pilot position has access to the radio. The pilot posi­tion will have PTT control regardless of the mic selector switch or copilot PTT when the PMA8000 is in

OFF/EMG mode.

the

CASE I: PTT is built into both pilot and copilot yokes.
CASE II: PTT is in pilot yoke only. This configuration requires a modified external PTT switch plugged

into the copilot's microphone jack. (See Appendix A). When the copilot's PTT is pressed, the intercom
switches the microphone audio from pilot to copilot mic.

CASE III: No built in PTT. This requires two built in PTTs to be installed, or modified external PTT

switches to be used. Modify external PTT as required. See Appendix A.

2.4.5 Audio Panel interface

The PMA8000 is designed to interface with standard aircraft avionics, and presents a 500Ω receiver im-
pedance. 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.

2.4.5.1 Speaker Load

The PMA8000 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 PMA8000 ( J1 27 WRT

28). The speaker load is 16 Ω, 3W.

2.4.6 TEL (Duplex) Function for Cell Phones

This mode is designed to operate with telecommunications systems, such as the AirCell Guardian 1000.
Audio streams selected by the intercom mode are provided to the Tel output, and audio from Tel is pre­sented to the headset. This allows a telephone-like audio interface.

The TEL mode in the PMA8000 is also compatible with many cellular telephones with hands-free headset
interfaces. A 1/8” or 3/32” jack can be installed on the aircraft panel, and interfaces with the PMA8000 as
shown: A patch cord (3/32” to 3/32”) is available from PS Engineering under P/N 425-006-7026.

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PS Engineering

Cellular Plug (typical)
Tip= Microphone out
Ring= Speaker audio
Base=Ground

Com 3 Audio

COM 3 Mic Input

Audio Lo

Cellular Phone
Interconnect

3/32" Cellular Jack

This is a typical interconnect
PS Engineering does not guarantee
compatability in all cases.

Figure 2-1 Cellular telephone interface

Unauthorized use of unapproved cellular telephone devices in aircraft is subject to FCC enforcement

action, which may include a $10,000 fine per incident. 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 www.ps-engineering.com.

2.4.7 Transmit Interlock

Some communications transceivers use a transmit-interlock system. To fully utilize the Split Mode feature,
this function must be disabled. Consult that manufacturer's installation manual.

2.4.8 Patented "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 and 2 by depressing this switch without having to
turn the mic selector switch. 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 shows that the swap has
been initiated, there is no dedicated swap indicator.

2.4.9 Backlighting

The PMA8000 has an automatic dimming of the pushbutton annunciation LEDs and marker lamps con­trolled by a photocell. Control of the unit backlighting is through the aircraft avionics dimmer For 14 V
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.

If an external dimmer control is not used, a constant back light illumination can be established for night-

time viewing. Pin 6 or 7 (depending on system voltage) must be tied to power (J1, 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.

2.4.10 Unswitched inputs

J1, pins 31, 29 and J2 pin 15 are unswitched, unmuted inputs # 1, 3 and 4, respectively. These inputs are
presented to the pilot and copilot 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, autopilot
disconnect tones, or any other critical audio signal. Unswitched #1 is always presented to the speaker.

Unswitched #2, J1 pin 44 is unswitched, but muted (controlled by the speaker switch), and suitable for air­to-ground (Flitefone) telephone ringer This input is not related to the cellular telephone interface.
Unswitched 3 and 4 inputs are always presented to the crew headphones and to the aircraft speaker.

NOTE: These inputs are fixed (1:1), and any audio level adjustments must be made at the input source.

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2.4.11 Public Address Mode

By pressing the Mute and SPR pushbuttons at the same time, the PMA8000 will be placed into public ad­dress (PA) mode. In this mode, both Com 1 and Com 2 receive indicators will blink, alerting the pilot that
when he presses his PTT switch he will be talking over the cockpit speaker. Copilot will still continue on
the selected COM radio.

If configured at installation, when in the PA mode, J2 Pin 19 will go low, providing a digital logic level
that can be used to incorporate a speaker-switching scheme. This can control some 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.

NOTE: To enable the PA Output, the internal configuration jumper, J4, MUST be placed across both pins
in the header. This jumper is shipped as open from the factory. Contact PS Engineering for details on
changing this configuration jumper.

2.4.12 PA Mute (J2, Pin 12)

Pin 12 of J2 is a TTL logic output that is pulled low during PTT operation. This serves as an input to exter­nal public address system to prevent feedback during transmissions.

2.4.13 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, such as an entertainment system that the pilot wishes to control.

This pin can also be used to control passenger Karaoke Mode, by connecting to pin 13 of the J2, or as a PA
cockpit/cabin speaker relay control.

NOTE: J2, Pin 18 should NOT be used is the AUX is going to be used to switch DME or auxiliary audio.

2.4.14 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.

NOTE: The intercom harness can be custom made by PS Engineering, Inc. Simply call the factory or

www.ps-engineering.com to obtain a wire harness work sheet. The harness will be made to your specifica-

tions and fully functionally tested. Harness can be ordered with jack, or without the intercom jacks in­stalled, for easier wire routing through the aircraft.

2.4.14.1 Entertainment Input

The PMA8000 has two INDEPENDENT music inputs. Entertainment input number 1 is J2 pins 23 (left
channel) and 24 (right channel), with respect to pin 25, and is provided to the pilot and copilot. Entertain­ment number 2 is provided to the passengers at all times, and is connected to 26 (left channel), 27 (right
channel), with respect to 28.

Entertainment 1 and 2 must be connected together in order for all positions to hear the same music source.
We recommend installing a DPDT switch to allow isolation of the music source to the crew.

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24
23
25

27
26

28
Alternate Music Interconnect
Note 7

Music interconnect for Music 1 to drive both inputs

26
27

28

23
24

25

Alternate Music Interconnect

Music interconnect for Music 2 to drive both inputs

Ent. #1 Input

Ent. #2 Input

Ent. #2 Input

Ent. #1 Input

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.

2.4.14.1.1 Entertainment muting

The PMA8000-system incorporates a "Soft Mute" system. This will mute the entertainment devices during
ICS or radio conversation.

Any signal appearing in the unswitched audio inputs will always mute the entertainment sources, even
though the passengers may not hear the audio tone itself.

Press the Mute switch to activate the Karaoke mode (disabling crew SoftMute™), This allows the pilot to
place the entertainment into the background while having the radios in the foreground. This eliminates the
constant interruption of the music while still having the radios a priority.

Caution: Local oscillators and internal signals from entertainment equipment can cause undesired interfer-

ence 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.

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2.4.14.1.2 Entertainment 2 Mute (J2 Pin 13 & 14)

Connecting J2 pin 13 to pin 14 (or ground) through a SPST switch places the entertainment #2 music
source into the Karaoke Mode. In this mode, incoming music and intercom conversation will not mute the
music for the passengers’ intercom net. This allows uninterrupted music during casual conversation and at
times when radio communications are of lesser importance.

See section 2.4.14 for alternative music connection to allow the passengers and crew to use the same input.

If desired, the AUX button can act as the passengers’ mute control. Connect J2 pin 18 (AUX logic) to J2
pin 13 (Entertainment. 2 Mute inhibit).

2.4.15 Playback button Installation (J2, Pin 22- Option 1, ONLY)

To activate the Recording System playback, a momentary push button switch is required. This switch can
be located anywhere in cockpit convenient to the pilot's reach. The switch must be connected to pin 22 of
J2 of the PMA8000, and ground

2.5 Marker Beacon Installation

2.5.1 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 AC43.13-2A (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.

2.5.2 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 +9 VDC ±1.5 VDC unloaded, at MAX
brightness) when active. Maximum source current per lamp is 125 mA. Voltage varies with photocell dim­ming.

2.5.3 Middle Marker Sense (Marker version)

A Middle Marker Sense output signal is available from the 8000 to 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 Adjustments

The PMA8000 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.

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y

g

PS Engineering

Installation and Operator’s Manual

Shorter Screw

Front

of unit

MKR
VOL

NOTE:

If top cover is removed

SPR
VOL

TEL
VOL

for ANY reason,
MUST replace the cover
screws with the proper
length, otherwise dama

result.

will

Figure 2-2- PMA8000 Adjustments

• 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 telephone audio.

2.7 Communications Antenna Installation Notes

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

It is probable that radio interference will occur in the split mode when the frequencies of the two air-

craft radios are adjacent, and/or the antennas are physically close together. PS Engineering makes no
expressed or implied warranties regarding the suitability of the PMA8000 in Split Mode.

of the aircraft while the other communications antenna is installed on the bottom. Any antenna

Warning:

ou

e

2.7.1 Audio Active Output

Pin 24 on the J1 connector (and PA Mute Pin 12 on J2) should be connected to Apollo CNX80 for audio
message prioritization, refer to CNX80 installation manual for details.

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2.8 PMA8000 Pin assignments

J1 Function J2 Function

1 Mkr Ant 1 Pilot Phones Lo
2 Mkr Ant Lo 2 Copilot Phones Lo
3 Telephone Audio in 3 Copilot Phones (L)
4 Telephone Lo 4 Copilot Phones (R)
5 Telephone Mic Audio 5 Lights lo
6 Telephone Mic Key 6 14/28 V Lights
7 ADF Audio In 7 14/28 V Lights
8 ADF Audio Lo 8 Aircraft Power

9 Com 1 Audio 9 Aircraft Power
10 Com 1 Audio Lo 10 Aircraft Ground
11 Com 1 Mic 11 Aircraft Ground
12 Com 1 Mic Key 12 PA Mute
13 Com 2 Audio 13 Mute Inhibit
14 Com 2 Audio Lo 14 Mute Inhibit Lo
15 Com 2 Mic 15 Unswitched #4
16 No Connect 16 Pilot Phones (L)
17 Nav 1 Audio 17 No connect
18 Nav 1 Audio Lo 18 Misc (AUX) logic output
19 Nav 2 Audio 19 PA Enable
20 Nav 2 Audio Lo 20 Swap
21 DME Audio 21 Swap Lo
22 DME Audio Lo 22 IRS Playback
23 Auxiliary Audio Input 23 Music 1 (L)
24 CNX80 Inhibit 24 Music 1 (R)
25 No connect 25 Music 1 Lo
26 No connect 26 Music 2 (L)
27 Com 2 Speaker Load 27 Music 2 (R)
28 Com 2 Speaker Load 28 Music 2 Lo
29 Unswitched Audio 3 29 Remote Enable
30 Com 2 Mic Key 30 IR Port Out
31 Unswitched # 1 31 Pilot Phones(Rt)
32 Unswitched #1 Lo 32 Copilot Mic Audio
33 Pilot Mic Audio 33 Copilot Mic PTT
34 Pilot Mic PTT 34 Copilot Mic Lo
35 Pilot Mic Lo 35 Pass 1 Mic Audio
36 Ext IM MKR 36 Pass 1 Mic Audio Lo
37 Ext OM MKR 37 Pass 2 Mic Audio
38 Ext MM MKR 38 Pass 2 Mic Audio Lo
39 MM Sense 39 Pass 3 Mic Audio
40 Pass HP (L) 40 Pass 3 Mic Audio Lo
41 Pass HP (R) 41 Pass 4 Mic Audio
42 Pass HP Lo 42 Pass 4 Mic Audio Lo
43 Unswitched #2 Lo 43 Speaker Lo
44 Unswitched #2 Audio 44 Speaker Output

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2.9 Post Installation 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.

2.10 Unit Installation

To install the PMA8000, 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.

Internal damage will result.

2.11 Operational Checkout

2.11.1 Required Test Equipment

In order to return an aircraft to service after installation of the PMA8000, 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.

2.11.2 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 position, with the au­dio panel power off. The Com audio will be present in one ear cup only.

4. Switch on the unit by pressing the volume (VOL) knob.

5. Check intercom operation.

6. Push the Com 1 Xmt select button (lower row).

7. 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 micro-

phone PTT installation.

8. Verify proper transmit and receive operation from the copilot position, noting that the copilot PTT
switch allows proper transmission on the selected transceiver. Verify that the Com 1 Xmt button blinks
when transmitting.

9. Verify that pushing the C

OM 2 button causes the button to illuminate, and the Com 2 receiver to be

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

10. Repeat for Com 2

11. Press and hold the Com 1 Xmt button. While holding the Com 1 button, press the Com 2 Xmt button.
This places the unit in “split Mode;” Verify that the pilot can transmit and receive on Com 1, while the
copilot transmits and receives on Com 2.

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12. Verify proper operation of all receiver sources by selecting them using the appropriate button. The
button illuminates to show which source is in use.

13. 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.

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

15. Verify proper Intercom system operation in the A

LL, ISO and CREW modes (see Table 3-1).

16. Verify that the audio selector panel system does not adversely affect any other aircraft system by sys­tematically switching the unit on and off, while monitoring the other avionics and electrical equipment
on the aircraft.

2.11.3 Marker Checkout

1. Connect a ramp generator at the antenna end of the marker coax. With the unit under test in HI sensi­tivity, verify that a 160 µV, 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 (M) push­button 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 LOW sensitivity, with 430 µVolts applied.

3. Connect the marker antenna and verify proper operation.

2.11.4 TEL Checkout

Press the TEL button. 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).

When a wireless telecommunication system is installed, a dial tone will appear in the headset of the pilot
when the TEL selector is activated. The telephone function will place any person heard by the pilot on the
intercom, also heard on the telephone.

2.11.5 Internal Recorder Checkout (Optional)

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 at least five incoming radio transmissions.

This audio should only appear in the pilot’s headset, and only be incoming transmissions from the trans­ceiver selected in the mic select switch. Depress the panel or yoke mounted playback switch, and verify
that messages play, in the order received. Repeat for COM 2, and COM 3 (if installed).

2.12 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 logbook entry, FAA Form 337, weight and balance computation and other documentation as
required. 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.ps­engineering.com.

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Installation and Operator’s Manual

Section III OPERATION

GENERAL INFORMATION

3.1 SCOPE

This section provides detailed operating instructions for the PS Engineering PMA8000, Audio Selector
Panel/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 four sections covering the basic operating areas of the PMA8000 systems. They
are Communications Transceiver Selection, Audio Selector, Intercom, and Marker Beacon Receiver.

Figure 3-1 PMA8000 front panel

3.2 Power Switch (1) (EMG-Fail Safe Operation)

Unit power is turned on and off by pushing the volume knob. In the OFF or "EMG" position, the pilot 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 be placed in the fail-safe mode.

The power switch also controls the audio selector panel functions, intercom and marker beacon receiver.

3.3 Microphone (2) (XMT) Selection (All models)

There are four pushbuttons associated with the communications transceivers. The lower buttons (item 2)
control which transceiver is selected for transmit, the top row of COM 1 and COM 2 allows selection of
the receive audio.

The PMA8000 gives priority to the pilot’s PTT. If the copilot is transmitting, and the pilot presses his PTT,
the pilot’s microphone will be transferred to the selected com transmitter.

The PMA8000-Series has an automatic selector mode. Audio from the selected transceiver is automatically
heard in the headsets and speaker (if selected). You can check this function by switching from C

OM 2 XMT mode and watch the selected RCV light on the selector change from COM 1 to COM 2. This

C

ensure the pilot will always hear the audio from the transceiver he is transmitting on.

When switching from C

OM 1 to COM 2, while COM 2 audio had been selected, Com 1 audio will continue

to be heard. This eliminates the pilot having to switch Com 1 audio back on, if desired.

When switching from C

OM 1 to COM 2 while Com 2 has NOT been selected, Com 1 audio will be switched

off. In essence, switching the mic selector will not effect the selection of Com receiver audio.

OM 1 to

In TEL mode, the pilot microphone and headphones are connected to the cell phone. The pilot PTT will
switch the pilot mic to the selected com transceiver, and allow continued aircraft communications to con­tinue.

The copilot will also be able to transmit on the other selected radio with his PTT as well.

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Figure 2 PMA8000 Operating controls

NOTE: Placing the PMA8000 in–TEL–
The intercom mode pushbutton determines who is on the phone, and who is still on the intercom.
In ISO, only the pilot is on the phone, while the copilot and passengers remain on intercom. The pilot will
continue to hear all selected aircraft radios.
In the ALL mode, everyone will be on the phone, intercom, and hear aircraft radios, and:
In Crew mode, the pilot and copilot will be on the phone and hear aircraft radios, while the passengers will
be on intercom.

3.3.1 Swap Mode (Switch from Com 1 to Com 2 remotely)

With a yoke mounted, 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. .

3.4 Audio Selector (4)

Receiver audio is selected through seven momentary, push-button, backlit switches. You will always hear
the audio from the transceiver that is selected for transmit.

The users can identify which receivers are selected by noting which of the green switch LEDs are lit. Push

buttons labeled Nav 1, Nav 2, MKR (Marker), ADF and AUX (auxiliary) places those receivers into the

audio stream. 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.

3.4.1 Speaker Amplifier (5)

The "SPR" in the push-button section stands for speaker. This switch will place all selected audio on the

cockpit speaker when this switch is selected. NOTE: Except for the unswitched audio, the speaker ampli­fier is not active in the "Split Mode”.

Unswitched audio input 1, (the input dedicated to autopilot disconnect, altimeter warning, etc.) will come
through the speaker regardless of the speaker button position. Unswitched audio input 2, (the input dedi­cated to a lesser importance input such as GPS waypoint alert) will come through the speaker only when
the SPR mode is on. Consult your installer for more information.

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3.4.1.1 Public Address Function

To access PA function, press the Mute (6) and SPR (5) buttons simultaneously. The COM1 and COM2

receive LEDs will blink to indicate the audio panel is in PA mode. The copilot can continue to use the se-

lected com radio while the pilot will be heard over the speaker. To exit, press Mode and SPR again.

We recommend that some switching means be used to transfer the audio from the cockpit speaker to a
cabin speaker for public address. This will prevent feedback. See section 2.4.11

PS Engineering

3.5 Split Mode

The split mode can be activated at any time by pressing the Com 1 and Com 2 XMT buttons at the same
time. This places the pilot on Com 1 and the Copilot on Com 2.

Pilot on Com 2 and Copilot on Com 1 is not possible.

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 in the

Split mode, particularly on adjacent frequencies.

PS Engineering makes no warranty about the suitability of Split Mode in all air-

craft conditions.

Note: Split Mode does not turn off other (Nav, ADF, etc.) selected audio to pilot. However, the copilot will only hear

the selected communications receiver.

3.5.1 Mute Button, Split Mode ICS (6)

In split mode, the pilot and copilot are usually isolated from each other on the intercom, simultaneously

using their respective radios. Depressing the “Mute” button (6) in Split Mode will activate VOX intercom

between the pilot and copilot positions. This permits intercommunication when desired between the crew.

Pressing the Mute button again disables this crew intercom function.

3.6 Intercom Operation

3.6.1 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)).

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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Table 3-1 Mic Muff ™ Part Numbers

Manufacturer Model Mic Muff™ Part Number

Bose Dynamic

Electret
M87 Dynamic

David Clark H10-30

H10-20, H10-40
H10-13.4

Lightspeed All 90015

Peltor 7003

7004

Pilot 11-20 & 11-90 90015

Sennheiser 90015

Telex Airman 750, Echelon

AIR3000

90010
90015
90020
90010
90015
90015

90010
90015

90015
90010

3.6.2 Intercom Volume Control (7)

The inner volume control knob adjusts the loudness of the intercom for the pilot and copilot. It has no ef­fect on selected radio levels, music input levels or passengers' volume level.

The outer volume control knob controls intercom volume or the passengers. It has no effect on radio or
music levels.

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.

3.6.2.1 Mono headsets in Stereo Installation

All passenger headsets are connected in parallel. Therefore, if a monaural headset is plugged in to a
PMA8000 Stereo installation, one channel will be shorted. Although no damage to the unit will occur, all
passengers will lose one channel, unless they switch to the “MONO” mode on the headset. PS Engineering
modifies headsets to add stereo capability, using high-fidelity speakers. Contact factory for details.

3.6.3 Intercom Modes (8)

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

modes. The description of the intercom mode function is valid only when the unit is not in the "Split"

mode. Then, the pilot and copilot intercom is controlled with the Mode button.

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.

SO: The pilot is isolated from the intercom and is connected only to the aircraft radio system. He will hear

I

the aircraft radio reception (and sidetone during radio transmissions). Copilot will hear passengers’ inter­com and Entertainment 1, while passengers will hear copilot intercom and Entertainment 2. Neither will
hear aircraft radio receptions or pilot transmissions.

LL: All parties will hear the aircraft radio and intercom. Crew will hear Entertainment 1, passengers will

A

hear Entertainment 2. 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.

REW: Pilot and copilot are connected on one intercom channel and have exclusive access to the aircraft

C

radios. They may also listen to Entertainment 1. Passengers can continue to communicate with themselves
without interrupting the Crew and may listen to Entertainment 2.

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3.6.3.1 Entertainment Input

The audio selector panel has provisions for two separate entertainment input devices. Music 1 feeds the
pilot and copilot positions. They operate independently

in the PMA8000. The volume control does not af­fect the music level. Music 2 feeds the passengers. Passenger music also operates independently from the
crew (music 1).

While in the ISO (Isolate) mode, the copilot will hear Entertainment 1 while the four passengers will hear
Entertainment #2. The pilot will hear entertainment 1, at a very muted level. The music will automatically
mute when either the copilot or passengers speak and then will gradually return to the original listening
level when the intercom or radio conversation ceases. Pilot will not mute the music while in ISO mode if
he presses the PTT switch to transmit or if he speaks while on the phone.

When in the A

LL mode, pilot and copilot hear Entertainment 1 input, while all passengers hear the Enter-

tainment 2 source. Music 1 will mute, or can be placed in Karaoke mode by pressing the “Mute” (6)

pushbutton. The passengers can disable their music muting with an external switch that may have been
installed during installation.

While in the C

REW mode, pilot and copilot will hear entertainment input #1 while the passengers will listen

to entertainment input #2.

3.6.3.2 Soft Mute and Soft Mute inhibit for Karaoke Mode

The Soft Mute feature assures that the aircraft radio transmissions will not be missed due to entertainment
playing. When there is radio reception or intercom conversation, the music level is dropped to a low, or
background level. When the radio or intercom traffic ceases, the level gradually returns to normal.

The “Mute” pushbutton switch, (6) controls muting of entertainment source #1 (for pilot and copilot).

Pushing this button places music input 1 into Karaoke (or sing along) mode. This allows the music to con­tinue uninterrupted by intercom or radio traffic when cockpit workload is appropriate. Pushing the button
again will release the mute inhibit function.

The passenger music, source #2, can be placed in the Karaoke mode by pressing the AUX button, if wired
to AUX logic output, or if a remote switch is installed in the aircraft. See wiring information for details.

Mode Pilot Hears Copilot Hears Passenger Hears Telephone Comments
Isolate

All

Crew

A/C Radios
Pilot Sidetone
(during radio transmis­sion)
Entertainment 1 is
Muted

Pilot
Copilot
A/C Radio
Passengers
Entertainment #1

Pilot
Copilot
A/C Radio
Entertainment #1

Copilot and passenger
intercom
Entertainment #1

Copilot
Pilot
A/C Radio
Passengers
Entertainment #1

Copilot
Pilot
A/C Radio
Entertainment #1

Passenger and Copilot
intercom
Entertainment #2

Passengers
Pilot
Copilot
A/C Radio
Entertainment #2

Passengers
Entertainment #2

“Phone Booth” mode
Pilot has exclusive use of
the telephone.
In TEL, Pilot connected to
selected COM for PTT TX
and receive.

All have access to phone . This mode allows all on

Pilot and copilot have phone
access.

This mode allows the
pilot to communicate
without the others both­ered by the conversa­tions. Copilot and pas­sengers can continue to
communicate and listen
to music

board to hear radio re­ception as well as com­municate on the inter­com. Music and intercom
is muted during intercom
and radio communica­tions
This mode allows the
pilot and copilot to con­centrate on flying, while
the passengers can
communicate amongst
themselves.

Table 3-2 Intercom Modes

3.7 Telephone Mode (9)

The TEL mode serves as a full duplex interface for telephone systems such as AirCell or portable cellular
phones with earpiece jacks. When interfaced with an approved airborne telecommunications system, the

200-890-0000 Page 3-5 Revsion 10, September 2005

PMA8000 Audio Selector Panel and Intercom System

Installation and Operator’s Manual

PS Engineering

PMA8000 can serve as a audio control and distribution center. When TEL is active, the button will blink
about twice as fast as the normal transmit rate.

In ALL intercom mode, all crew and passengers will be heard on the phone when they speak. All will hear

selected audio. Com audio is automatically heard in the headsets.

In CREW mode, the pilot and copilot are connected to the telephone. The pilot and copilot will have

transmit capability on the other selected transceiver Com 1 or 2, simply by using their respective PTT
switch.

In ISO intercom mode, when the PMA8000 is in the TEL mode, the pilot position is in the "Phone Booth."

Only the pilot will hear the telephone, and only he will be heard. He will also have access to Com 1 or 2,
and will transmit on that radio using the PTT. All selected audio is provided.

Note: Because the cellphone uses an intercom circuit, all stations on that circuit will lose intercom

capability when the cellphone is in use.

PS Engineering does not guarantee compatibility with personal cellular telephones.

Visit www.ps-engineering.com for a list of phones that have been tested.

3.8 Marker Beacon Operation (10)

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 selecting the "MKR" push-button switch. To
adjust the volume level, there is a service adjustment located on the top of the unit.

A pushbutton is used to set the receiver sensitivity and to test the indicator lamps. Use "HI" sensitivity ini-

tially. This allows you to hear the outer marker beacon about a mile out. Then touch the smaller MKR but-

ton to switch into Low Sensitivity mode. “LO” sensitivity gives you a more accurate location of the Outer

Marker. Holding the MKR button for two seconds activates marker test lamp, labeled "T/M" and illumi­nates all three lamps simultaneously to assure the lamps (internal and external) are in working order. TST
does not activate MM autopilot sense output. Releasing the button returns to the last sensitivity.

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

3.9 Internal Recorder System (Option 1)

The Intercom Recording System is a digital recording system allowing automatic storage and playback of
aircraft radio traffic.

Operating as a continuous loop recorder, (first message received will be the last heard), the recorder has
one minute of recording time or up to 16 messages. With its own built in VOX circuit, there are no buttons
to press to start recording. The system automatically begins to record the instant the radio becomes active.
Only aircraft radio audio in pilot’s headset is recorded and only the pilot will hear the playback audio.

3.10 Operation

Recording is automatic. To play back the last recorded message, simply press the switch associated with
the IRS. Each additional press of the button will play the preceding recorded message. You must wait for
the message to finish playing before accessing the prior message. To cancel the playback, press and hold
the playback button for two seconds. The next time the button is pressed, the next earlier message will be
heard.

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PMA8000 Audio Selector Panel and Intercom System

Installation and Operator’s Manual

PS Engineering

200-890-0000 Page 3-7 Revsion 10, September 2005

PMA8000 Audio Selector Panel and Intercom System

Installation and Operator’s Manual

PS Engineering

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 installation as recorded in aircraft logbook and/or on FAA Form 337

During the first twelve (12) months of the three-year warranty period, PS Engineering, Inc., at its option,

will send a replacement unit

tion with a factory technician. For the remaining twenty-four (24) months of the three-year warranty pe-

riod, the unit must be returned to PS Engineering
cost repair.

All transportation charges for returning the defective units are the responsibility of the purchaser
mestic 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.

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

, Inc., or an authorized warranty service facility, for no-

. All do-

.

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.

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PMA8000 Audio Selector Panel and Intercom System

Installation and Operator’s Manual

PS Engineering

Appendix A External PTT Hook Up

Part of the installation includes the installation of PTT (Push To Talk) switches that allow the use of your
aircraft radio for communications transmissions.

There are three possible configurations ; you must select the case that best fits your installation. NOTE:
Only the person who presses their PTT switch will be heard over the radio.

CASE I

The PTT is built into the pilot and copilot yokes

Simply install the plugs from the headset into the aircraft headphone jacks. Then use the yoke mounted
PTT to transmit. No other action is required.

CASE II

Built in PTT only on the pilot side only

This configuration requires a modified external PTT switch plugged into the copilot's mic jack. (See De­tails Below) When the copilot's PTT is depressed, this activates an internal relay that switches the mic au­dio to the aircraft radio from the pilot to the copilot.

Case III

No built in PTT switch at all.

Two built-in PTT must be installed, or two external, modified PTT switches will be required for both the
pilot and copilot. Modifications to the PTT are required. (See details below)

Push To Talk Modifications

When received from the manufacturer, an after-market PTT switch opens the mic audio path to the "ring"
connection of the PTT mic plug until the button is pressed. When the PTT is between the intercom and the
headset, the intercom function will not work unless the PTT switch is depressed. A simple modification
can be performed to allow proper intercom operation. NOTE: This mod does not alter normal operation.

Below are some examples of typical modifications. Contact the PTT manufacturer for more details if nec­essary.

Procedures For David Clark PTT

Unscrew the round black plastic cover from the jack.
Connect the joined black wires to the red wire.
Replace the round black plastic cover.

Procedures for Telex PT-200

Unscrew the round black plastic cover from the jack.
Cut the red wire in the middle of the wire.
Strip both ends of the insulation.
Solder the two ends to the ground lug to the PTT jack.
Replace the round black plastic cover.

Procedures for Telex PT-300

Unscrew the round black plastic cover from the plug jack.
Remove the heat shrink material from the joined black wires.
Solder these two wires to the lug that has a white wire already soldered to it.
Replace the round black plastic cover

200-890-0000 Appendix A Revsion 10, September 2005

PMA8000 Audio Selector Panel and Intercom System

PS Engineering

Installation and Operator’s Manual

Appendix B – PMA 8000 Installation Drawings

475-013-0001 Lock nut (4 ea)

44-pin connector (2 ea)

475-440-0004 (4 ea)

475-440-0007 (4 ea)

Rack
430-890-0040

Rack back plate
430-890-0050

J2 J1

Viewed from Back

15
30
44

1
16
31

15
30
44

1
16
31

Solder Lug (mount as convenient)

Rear plate detail (not to scale)

6.31in

1.28in

1.28 in

0.96in

0.36in

0.37in

3.87in

5.53in

6.04in

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

ensure even seating of the unit and connectors.

200-890-0000 Appendix B Revsion 10, September 2005

PMA8000 Audio Selector Panel and Intercom System

PS Engineering

Installation and Operator’s Manual

Appendix C, J1 Interconnect

Com 1 Audio Hi

Communications
Transceiver #1

Communications
Transceiver #2

See Note 4

Com 2 SPR Load

Telephone

Com 1 Lo

Com 1 Mic Audio Hi

Com 1 Mic Key

Com 2 Audio Hi

Com 2 Lo

Com 2 Mic Audio Hi

Com 2 Mic Key

Com 2 Spr Load

Com 2 Spr Load

TEL Audio Hi

TEL Audio Lo

TEL Mic Audio Hi

PMA8000 Connector, J1 (Sub-D 44-pin, male on tray)

Notes:

1. All shields should be grounded at audio panel only.
Other end remains floating.

2. All Power, and Ground wires shall be #22 gage wire
Lighting #22 AWG, other wires minimum #24 AWG

3. All mic and headphone jacks must be isolated from ground.

4. Speaker loads may be required on some older transceivers.
Consult manufacturer's information.

13

COM 2 Speaker load is the only one provided in the PMA8000.

14

5. All shielded wires must be MIL 22750 or 27500.

15

6. Unswitched inputs 1, 3, 4 are always presented to speaker

30

and crew headphones, regardless of SPR switch or PTT.

7. COM active output provides a logic low when there
is activity on COMs or other selected audio. This is used to prioritze
audio warnings in some systems.

3

8. No connection to pins 25, and 26

4

9. DME audio is passed when AUX button is pressed

5

VHF Nav 1

VHF Nav 2

ADF Receiver
DME Receiver

AUX Receiver

Unswitched Audio #1

Unswitched Audio #2

See Note 6

Unswitched Audio #3

Pilot PTT

Cellular Phone
Interconnect

MKR Ant.

Cellular Plug (typical)
Tip= Microphone out
Ring= Speaker audio
Base=Ground

RG-58A/U Coax

3/32" Cellular Jack

Nav 1 Audio Hi
Nav 1 Audio Lo

Nav 2 Audio Hi
Nav 2 Audio Lo

ADF Audio Hi
ADF Audio Lo

DME Audio Hi
DME Audio Lo

AUX Audio Hi
AUX Audio Lo

Unswitched Input #1 Hi

Unswitched Audio Lo

Unswitched Input #2 Hi

Unswitched Audio Lo

Unswitched Input #3 Hi

Unswitched Audio Lo

Pilot Mic Audio Hi

Pilot Mic PTT

Pilot Mic Lo

17
18

19
20

31
32

44
43

24
1

2

AirCell
Interconnect

AT/AGT.01, AT/AGT.02, ACM2000

M
B
L

TEL Audio Hi

TEL Lo

TEL Mic Audio Hi

K

Guardian 1000

23
11
24

TEL Audio Hi

TEL Lo

TEL Mic Audio Hi

PMA8000- J1

25

Com 3 Mic Key - No Connect

See Note 7

PMA8000- J1

3
4
5

3
4
5

TEL Audio
TEL Mic Input
TEL Audio Lo

200-890-0000 Appendix B Revsion 10, September 2005

PMA8000 Audio Selector Panel and Intercom System

PS Engineering

Installation and Operator’s Manual

Appendix D, J2 Connector Interconnect

PMA8000 J2 CONNECTOR
(Sub-D 44-pin male on tray)

Unswitched Audio #4

Copilot Mic Jack

Ent. #1 Input

Ent. #2 Input

Unswitched Input #4 Hi

Unswitched Audio Lo

Copilot Mic Audio

Copilot PTT

Copilot Mic Lo

Ent. #1 Audio (R)

Ent. #1 Audio (L)

Ent. #1 Audio Lo

Ent. #2 Audio (R)

Ent. #2 Audio (L)

Ent. #2 Audio Lo

Pass. Mic Hi

Pass. Mic Lo

Pass. Mic Hi

Pass. Mic Lo

Pass. Mic Hi

Pass. Mic Lo

Pass. Mic Hi

Pass. Mic Lo

Ground Lug

44
43

Speaker Hi
Speaker Lo

Notes:

1. All Power, and Ground wires must be #18 gage wire

15

Lighting #22 AWG, other wires minimum #24 AWG.

2. All shields should be grounded at audio panel only,

35

other end remains floating

36

3. Pins 8 and 9 connected through a 5 A breaker.

4. PA Mute is a TTL level logic output that is pulled

37

low when PTT active.

38

5. All shielded wires must be MIL 22750 or 27500.

6. Reserved

39

7. Music inputs are independent.

40

Connect together to use a single source
for both inputs. For music distribution information, see Section 2.4.14.1.

41

8. When pin 19 is switched to ground, the PA mode is activated,

42

placing pilot microphone on speaker output when PTT active.
See Sect 2.5.13.

9. AUX enable goes low when AUX button is on. May be used for
passenger mute inhibit by connection to pin 13. Should NOT be
used when DME is installed and played through AUX

10. Connections for Future System

11. No connection to Pin 17

24
23
25

27
26

24
23
25

28

27
26

28

See Note 10

7
6
5

See Note 9

14 V Lights Hi

7
6
5

18
29
30

5
6

Ent. #2 Mute

PA Mute

28 V Lights Hi

AUX Enable
Remote Enable
IR Data Out

See Note 9

See Note 4

7

28-Volt lights lo

14-Volt lights lo

200-890-0000 Appendix D Revsion 10, September 2005

PMA8000 Audio Selector Panel and Intercom System

Installation and Operator’s Manual

PS Engineering

Appendix E- Instructions for FAA Form 337 and continuing airworthiness

9.1 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 PMA8000, you may use the following text as a guide.

Installed audio selector and 6-place intercom, PS Engineering PMA8000, part number 050-890-(X) 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

Aircraft equipment list, weights and balance amended. Compass compensation checked. A copy of the opera­tion instructions, contained in PS Engineering document 200-080-( ), revision ( ), dated ( ), is placed in the air­craft records. All work accomplished listed on Work Order .

% of the electrical system capacity with the PMA8000 added.

),

9.2 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 informa-

tion

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

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:

while applying slight pressure to the edges of the bezel. Do not over tighten!

Engage the locking screw at the back. Turn the locking screw CW,

200-890-0000 Appendix E Revsion 10, September 2005

PMA8000 Audio Selector Panel and Intercom System

Installation and Operator’s Manual

PS Engineering

Appendix F 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

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
Lightning Direct Effects 23.0 Category X, not tested
Icing 24.0 Category X, not tested
ESD 25.0 Category X, not tested

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

22.0 Equipment tested to Category XXE2

200-890-0000 Appendix G Revsion 10, September 2005