Page 1
9800 Martel Road
Lenoir City, TN 37772
www.ps-engineering.com
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A88000000
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P33
Document P/N 200-890-0600
Rev. 6, October 2010
Audio Selector Panel with Marker Beacon Receiver
High-fidelity Stereo Intercom with Internal MP3 Player
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. 2010 ©
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 (865) 988-9800, email contact@ps-engineering.com.
In certified aircraft, warranty is not valid unless this product is installed by an
Authorized PS Engineering dealer.
Page 2
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 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 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 ............................................................................. 2-4
2.4.7 TRANSMIT INTERLOCK .............................................................................................................. 2-4
2.4.8 "SWAP" MODE .......................................................................................................................... 2-5
2.4.9 BACKLIGHTING ......................................................................................................................... 2-5
2.4.10 UNSWITCHED INPUTS............................................................................................................... 2-5
2.4.11 PUBLIC ADDRESS MODE .......................................................................................................... 2-6
2.4.12 PA MUTE (J2, PIN 12) ............................................................................................................. 2-6
2.4.13 MISCELLANEOUS LOGIC OUTPUT (J2, PIN 18) ........................................................................... 2-6
2.5 INTERCOM WIRING....................................................................................................................................... 2-6
2.5.1 ENTERTAINMENT INPUTS ........................................................................................................... 2-6
2.5.2 ENTERTAINMENT MUTING.......................................................................................................... 2-7
2.5.3 CONFIGURING MUSIC INPUT WITH FUNCTION KEYS .................................................................... 2-7
2.5.4 PLAYBACK BUTTON INSTALLATION ............................................................................................ 2-8
2.6 MARKER BEACON INSTALLATION................................................................................................................. 2-8
2.6.1 MARKER ANTENNA INSTALLATION ............................................................................................ 2-8
2.6.2 EXTERNAL MARKER LIGHTS ...................................................................................................... 2-8
2.6.3 MIDDLE MARKER SENSE............................................................................................................ 2-8
2.7 ADJUSTMENTS ............................................................................................................................................. 2-8
2.8 COMMUNICATIONS ANTENNA INSTALLATION NOTES ................................................................................... 2-10
2.8.1 AUDIO ACTIVE OUTPUT........................................................................................................... 2-10
2.9 PMA8000B-MP3 PIN ASSIGNMENTS.......................................................................................................... 2-11
2.10 POST INSTALLATION CHECKOUT .............................................................................................................. 2-12
2.11 UNIT INSTALLATION................................................................................................................................. 2-12
2.12 OPERATIONAL CHECKOUT....................................................................................................................... 2-12
2.12.1 REQUIRED TEST EQUIPMENT.................................................................................................. 2-12
2.12.2 AUDIO PANEL TEST............................................................................................................... 2-12
2.12.3 MARKER CHECKOUT ............................................................................................................. 2-13
2.12.4 TEL CHECKOUT.................................................................................................................... 2-13
2.12.5 INTERNAL RECORDER CHECKOUT .......................................................................................... 2-13
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PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page ii Rev. 6, Oct. 2010
2.12.6 FUNCTION BUTTON CHECKOUT.............................................................................................. 2-13
2.12.7 MP3 PLAYER CHECKOUT....................................................................................................... 2-13
2.13 FINAL INSPECTION................................................................................................................................... 2-14
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 TELEPHONE (TEL) (9)................................................................................................................................. 3-2
3.4.1 CELLULAR TELEPHONE SIDETONE............................................................................................... 3-3
3.5 SPEAKER AMPLIFIER (5) .............................................................................................................................. 3-3
3.6 MARKER BEACON OPERATION (10).............................................................................................................. 3-3
3.7 INTERCOM OPERATION ................................................................................................................................ 3-4
3.7.1 INTELLIVOX® VOX-SQUELCH.................................................................................................... 3-4
3.7.2 INTERCOM VOLUME CONTROL (7).............................................................................................. 3-4
3.7.3 INTERCOM MODES (8) ............................................................................................................... 3-5
3.7.4 SPLIT MODE INTERCOM............................................................................................................. 3-5
3.8 MUSIC MUTING (6) ...................................................................................................................................... 3-5
3.8.1 MUSIC IN PILOT ISO MODE ........................................................................................................ 3-6
3.9 TELEPHONE MODE (9)................................................................................................................................. 3-6
3.10 UTILITY JACK............................................................................................................................................ 3-7
3.10.1 CELLULAR PHONE ................................................................................................................... 3-7
3.10.2 AUDIO ADVISORY INPUT ......................................................................................................... 3-7
3.10.3 MUSIC INPUT .......................................................................................................................... 3-7
3.10.4 SMART FUNCTION KEYS (SFK)................................................................................................ 3-7
3.10.5 FUNCTION “A” (ALTERNATE INTERCOM MODE) ....................................................................... 3-8
3.10.6 FUNCTION “B” (MONITOR MODE)............................................................................................ 3-8
3.10.7 FUNCTION “C” (MUSIC DISTRIBUTION) .................................................................................... 3-9
3.11 MP3 MUSIC CONTROLS........................................................................................................................... 3-10
3.12 MP3 PLAYER OPERATION ....................................................................................................................... 3-10
3.13 MUSIC 1 & MP3 VOLUME (H & I) ............................................................................................................ 3-10
3.14 FILE TRANSFER ....................................................................................................................................... 3-11
3.14.1 LAPTOP TRANSFER ................................................................................................................ 3-11
3.14.2 TRANSFER USING USB DRIVE ................................................................................................ 3-12
3.15 INTERNAL RECORDER.............................................................................................................................. 3-13
3.15.1 PLAYBACK........................................................................................................................ 3-13
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 Connector 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
New
7/7/08
Created for PMA8000B-MP3 MP3 version
1
8/7/08
Updated transfer instructions
2
8/20/08
Update music mute modes
3
3/4/09
Changed to show cell phone sidetone shipped as disabled
4
10/1/09
Updated Split Mode Intercom Operation Instructions (§3.7.3) and added TEL Sidetone control (§3.4.1)
5
2/11/10
Added MON and Pilot ISO music (above serial number E10251)
6
10/14/2010
Clarified the Music 1 all headsets function §3.11.3
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PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 1-1 Rev. 6, Oct. 2010
Section I – GENERAL INFORMATION
1.1 INTRODUCTION
The PMA8000B-MP3 represents another evolutionary step in cockpit audio control and intercommunications utility. Using our patented IntelliVox® design, front panel utility jack, and pilot programmable configurations, and internal MP3 player, this marks the next level of audio control. 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 PMA8000B-MP3.
1.2 SCOPE
This manual provides detailed installation and operation instruction s for the PS Engineering PMA8000BMP3-series of Audio Selector Panel/Intercom Systems. This includes the following units:
Model
Description
Part Number
PMA8000B-MP3
Stereo Audio Selector Panel with Marker Beacon, includes
utility jack and Internal Recorder System with internal 1G
MP3 player
050-890-0602
1.3 EQUIPMENT DESCRIPTION
The PMA8000B-MP3 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 two
transceivers (Com 1, Com 2) and six receivers (Nav 1, Nav 2, ADF, DME, MKR and AUX).
The PMA8000B-MP3 version (050-890-0602) incorporates an internal MP3 Player with one gigabyte of
memory. This is controlled through secondary functions on the front panel.
A full duplex TEL mode allows the PMA8000B-MP3 to act as an audio interface between aircraft headphone and microphones and specific aircraft approved (FAA/FCC) cellular telephone equipment, through
the front mounted jack.
Warning: Use of non-aviation approved cellular telephone equipment may be prohibited by regulation.
PS Engineering is not responsible for unauthorized airborne use of cellular telephones.
For airborne use, the PMA8000B-MP3 must be interfaced with an approved system.
There are five unswitched inputs, available for traffic or EGPWS, autopilot disconnect, and/or radar a ltimeter warning, with the fifth unswitched input through a front-mounted utility jack, when configured to
act as a fifth unswitched input.
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 for the pilot and copilot position , and
allows radio transmission. In "Split Mode" the PMA8000B-MP3 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. Unswitched input #1 is also provided to the pilot headphone in fail-safe
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PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 1-2 Rev. 6, Oct. 2010
A six-station voice activated (VOX) intercom is included in the PMA8000B-MP3. 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
controls the passenger intercom volume. Intercom squelch is automatic.
A 3-light, 75 MHz Marker Beacon receiver is integrated in the PMA8000B-MP3. 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.
1.4 APPROVAL BASIS
FAA TSO Approval.
The PMA8000B-MP3-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.
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
PMA8000B-MP3 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)
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PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 1-3 Rev. 6, Oct. 2010
Audio Selector Specifications
Audio selector panel input impe dance:
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, TEL, Nav 1, Nav 2, ADF, DME,
MKR, AUX)
Unswitched Inputs:
5 (including front jack)
Transmitter Selections:
4 (Com 1, Com 2, TEL
Com1/2)
Speaker Impedance:
4
Headphone Impedance:
150 – 1000
Headphone Output:
38 mW each headset, no clipping <1% THD typical
Microphone Impedance:
150 - 600
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
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)
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PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 1-4 Rev. 6, Oct. 2010
1.6 EQUIPMENT SUPPLIED
1 ea. of the following units:
Model
Description
Part Number
PMA8000B-MP3
PMA8000B-MP3 Audio Panel with Marker Beacon and Stereo
intercom, includes internal 1G MP3 Player
050-890-0602
PMA8000B- Installation Kit: 250-890-0000
Description
Quantity
Part
Number
PMA8000B-MP3 installation rack assembly
1
430-890-0040
PMA8000B-MP3 Rack back plate
1
430-890-0050
44-pin connector kit
2
120-891-2045-
Backshell, connector
2
625-025-2465
Backshell Retainer
2
431-881-0100
4 40 X 7/16 screw w/nylon patch
4
475-440-0007
4 40 X 3/8 screw w/lock washer
4
475-440-1038
4-40 Lock Nut
1
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
Included with PMA8000B-MP3:
Cable, USB to 2.5 mm 4-conductor, PS Part Number 425-921-3983
USB-to-USB adapter PS Part number 425-003-1454
1.7 EQUIPMENT REQUIRED BUT NOT SUPPLIED
a. Circuit Breaker: 1 ea; 5 amp PULL TYPE REQUIRED for PMA8000B-MP3
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. Cell Phone Patch Cord, 2.5mm to 2.5mm, PS Part Number 425-006-7026
b. Music Patch Cord, 3.5mm to 5.5mm, PS Part Number 425-006-2535
1.9 LICENSE REQUIREMENTS
None
Note: The PMA8000B-MP3 only supports Wave (.wav), unprotected Windows Media Files (.wma)
and MP3 (.mp3) file types. It does not support iTunes format files.
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PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 2-1 Rev. 6, Oct. 2010
Section II - INSTALLATION
2.1 GENERAL INFORMATION
2.1.1 SCOPE
This section provides detailed installation and interconne ction instructions for the PS Engineering
PMA8000B-MP3 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 PMA8000B-MP3 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 (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 PMA8000B-MP3 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 PMA8000B-MP3 must be rigidly mounted to the instrument panel of the aircraft structure, within
view and reach of the pilot position(s). Installation must comply with FAA Advisory Circular AC 43.13 2B. 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. Carefully slide the unit free of the tray. Set
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PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 2-2 Rev. 6, Oct. 2010
the unit aside in a safe location until needed. Install the tray using six 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 connectors mate with two 44-pin connectors in the PMA8000B-MP3. The connectors are a subminiature 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 (475-440-1038), from the inside of the tray and the
mounting block, 431-891-0100. 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 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 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 PMA8000B-MP3 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 PMA8000B-MP3 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 PMA8000B-MP3 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.
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PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 2-3 Rev. 6, Oct. 2010
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
PMA8000B-MP3 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 si gnal and ground connections are made directly to the dedicated music signal and ground inputs on the
PMA8000B-MP3. The power for IFE and audio panel should be a common bus.
If a music jack is installed for Music 1 or 2, we strongly recommend isolating the jack from airframe
ground, by using an insulated mounting plate.
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 necessary as long as the existing installation meets
the requirements. All existing functions of the GMA340 as well as all of the new capabilities afforded by
the PMA8000B-MP3 will become instantly available. Be advised, the PMA8000B-MP3 does not support 3
VHF Coms, however. The PMA8000B-MP3 handles two COM transceivers and a full-duplex cellular/satellite telephone.
Added capabilities include, IntelliVox®, DuTel™ duplex telephone, internal MP3 player, with improved
music fidelity and Soft Mute™ and Karaoke™ muting modes, improved and more flexible music distribution control, internal recorder function, and add itional unswitched audio inputs.
2.4.3 Power
The PMA8000B-MP3 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. 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
PMA8000B-MP3 is in the OFF/EMG mode.
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 PMA8000B-MP3 is designed to interface with standard aircraft avionics, and presents 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.
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Installation and Operator’s Manual
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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 PMA8000B-MP3 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 PMA8000BMP3 (J1 27 WRT 28). The speaker load is 16 , 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 pr esented to the headset. This allows a full-duplex telephone-like audio interface.
The TEL mode in the PMA8000B-MP3 is also compatible with many cellular telephones with hands -free
headset interfaces. The front panel 3/32” utility jack can be used as the interface to the Cell Phone, or a
3/32” jack can be installed somewhere on the aircraft panel. The wired interface jack is connected with
the PMA8000B-MP3 as shown: A patch cord (3/32” to 3/32”) is available from PS Engineering under
P/N 425-006-7026.
3/32" Cellular Jack
COM 3 Mic Input
Com 3 Audio
Audio Lo
Cellular Plug (typical)
Tip= Microphone out
Ring= Speaker audio
Base=Ground
This is a typical interconnect
PS Engineering does not guarantee
compatability in all cases.
Cellular Phone
Interconnect
Figure 2-1 Cellular telephone interface for rear connector, if an additional jack is desired
2.4.6.1 Cell phone Sidetone
As shipped from PS Engineering, the PMA8000B-MP3 does not provide cellular telephone sidetone (the
user’s voice fed back to the headset). Some cell phones do not provide sidetone. For units with serial number E10251 and above, telephone sidetone can be enabled by pressing the TEL and ADF buttons at the
same time, for more than one second. This setting will be remembered by the unit. In units with serial
numbers E10250 and below, an internal modification can be made that will allow the PMA8000B -MP3 to
provide this sidetone. Contact PS Engineering for more information.
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. 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 ma nual.
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PMA8000B-MP3 Audio Selector Panel and Intercom System
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2.4.8 "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 ha ving 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 PMA8000B-MP3 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 nigh ttime 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.
2.4.10 Unswitched inputs
J1, pins 31, 29 and J2 pin 15 are unswitched, unmuted (by transmitter keying), inputs # 1, 3 and 4, r espectively. 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, plus to the crew headphones, and is available to the pilot in fail -safe (off) mode.
Unswitched 3 and 4 inputs are always presented to the crew headphones and to the aircraft speaker.
Unswitched
Input
Hear in
Fail Safe
Hear in
Crew Headset
SPR button
Select
Gain
1
Yes
Yes
No
1:1(fixed)
2
No
Yes
Yes
1:1(fixed)
3
No
Yes
No
Adjustable
4
No
Yes
No
1:1(fixed)
5 (jack)
No
Yes
No
1:1(fixed)
Table 2-2 Unswitched input table
Unswitched #2, J1 pin 44 is unswitched is always connected to the Pilot’s headphone. However, this
unswitched audio is only presented to the aircraft speaker when the SPR push button has been selected.
This input would be suitable for air-to-ground (Flitefone) telephone ringer. This input is not related to the
cellular telephone interface.
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.
Unswitched #1 is presented to the pilot headphone in fail-safe (off) mode.
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 un it. This control allows you to control the volume level of that unswitched input from 50% to 200% of the input level. 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 headset, and not muted.
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PMA8000B-MP3 Audio Selector Panel and Intercom System
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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.
2.4.11 Public Address Mode
By pressing the Mute and SPR pushbuttons at the same time, the PMA8000B-MP3 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.
To enable the PA Digital 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. Contact
PS Engineering for details on changing this configuration jumper.
When this Digital 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.
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 if the AUX is going to be used to switch DME or auxiliary audio.
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.
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 specifications and
fully functionally tested. Harness can be ordered with jack, or without the intercom jacks installed, for
easier wire routing through the aircraft.
2.5.1 Entertainment Inputs
In addition to the internal MP3 player, the PMA8000B-MP3 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 r espect to 28. Refer to Section 3.11.3 for more information.
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PMA8000B-MP3 Audio Selector Panel and Intercom System
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NOTE
Us e the low level ou tput of any a ddition a l enter t a i n m en t dev i ce t o con n e ct to t h e audio p a n el. Ma x i m um sig n a l l eve l is 3 VA C p-p. D O NOT u s e a sp e aker -l eve l outp u t ,
this wi ll cau s e inter n al d a m a ge in t h e a udio p a n el.
2.5.2 Entertainment muting
The PMA8000B-MP3-system incorporates a "Soft Mute™" system. This will mute the Music 1 entertainment sources during conversations on the intercom, radio, or both, depending on the mute mode.
Any signal appearing in the hard wired 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 ha ving the radios in the foreground. This eliminates
the constant interruption of the music while still having the radios a priority. Succeeding pushes of the
Mute button will limited the muting to intercom, but not radio, and radio, but not intercom.
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 a dverse effect within the aircraft systems. If any unusual operation is noted in flight, immediately sw itch off
the entertainment devices.
All additional entertainment devices must be switched off for both takeoff and landing.
2.5.2.1 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.
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).
2.5.3 Configuring Music Input with Function Keys
The two music inputs can be configured by the user from the front panel (see section 3.10). There are
three configurations available, independent, ICS mode dependent, and single input.
If the inputs are independent, Input #1 (and the front jack) is provided to the pilot and copilot. Muting
(SoftMute™) is controlled by the front panel “mute” button.
If the inputs are intercom mode dependent, input 1 goes to the pilot, copilot and all pass engers 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 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, except in ISO, when only the pilot can
hear the annunciations. If the customer wants to exclude IRS and function key annunciation playback
from the copilot position, contact PS Engineering for more information.
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PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 2-8 Rev. 6, Oct. 2010
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 to remotely activate the Recording System playback. This
switch can be located anywhere in cockpit convenient to the pilot's reach. The switch should be connected
to pin 22 of J2 of the PMA8000B-MP3, and ground.
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 +9 VDC 1.5 VDC unloaded, at MAX
brightness) when active. Maximum source current per lamp is 125 mA. Voltage varies with photocell
dimming.
2.6.3 Middle Marker Sense
A Middle Marker Sense output signal is available from the 8000 to flight control systems. This fun ction
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.
2.7 Adjustments
The PMA8000B-MP3 is factory adjusted to accommodate the typical requirements for most aircraft co nfigurations. There are three adjustments in the top cover that allow the installer to tailor the specific fun ctions.
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PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 2-9 Rev. 6, Oct. 2010
Figure 2-2- PMA8000B-MP3 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
removed).
Figure 2-3 – 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
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PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 2-10 Rev. 6, Oct. 2010
2.8 Communications Antenna Installation Notes
For best results using the in Split Mode, it is recommended that the one VHF communications a ntenna 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 ai rcraft radios are adjacent, and/or the antennas are physically close together. PS Engineering makes
no expressed or implied warranties regarding the suitability of the PMA8000B-MP3 in Split
Mode.
2.8.1 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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2.9 PMA8000B-MP3 Pin assignments
J1
Function
J2
Function
1
Mkr Ant
1
Pilot Phones Low
2
Mkr Ant Low
2
Copilot Phones Low
3
Telephone Audio in
3
Copilot Phones (L)
4
Telephone Low
4
Copilot Phones (R)
5
Telephone Mic Audio
5
Lights Low
6
Telephone Mic Key
6
14/28 V Lights
7
ADF Audio In
7
14/28 V Lights
8
ADF Audio Low
8
Aircraft Power
9
Com 1 Audio
9
Aircraft Power
10
Com 1 Audio Low
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 Low
14
Mute Inhibit Low
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 Low
18
Misc (AUX) logic output
19
Nav 2 Audio
19
PA Enable Output
20
Nav 2 Audio Low
20
Swap
21
DME Audio
21
Swap Low
22
DME Audio Low
22
IRS Playback
23
Auxiliary Audio Input
23
Music 1 (L)
24
CNX80 Inhibit
24
Music 1 (R)
25
No connect
25
Music 1 Low
26
No connect
26
Music 2 (L)
27
Com 2 Speaker Load
27
Music 2 (R)
28
Com 2 Speaker Load
28
Music 2 Low
29
Unswitched Audio 3
29
No Connect
30
Com 2 Mic Key
30
No Connect
31
Unswitched # 1
31
Pilot Phones (R)
32
Unswitched #1 Low
32
Copilot Mic Audio
33
Pilot Mic Audio
33
Copilot Mic PTT
34
Pilot Mic PTT
34
Copilot Mic Low
35
Pilot Mic Low
35
Pass 1 Mic Audio
36
Ext IM MKR
36
Pass 1 Mic Audio Low
37
Ext OM MKR
37
Pass 2 Mic Audio
38
Ext MM MKR
38
Pass 2 Mic Audio Low
39
MM Sense
39
Pass 3 Mic Audio
40
Pass HP (L)
40
Pass 3 Mic Audio Low
41
Pass HP (R)
41
Pass 4 Mic Audio
42
Pass HP Low
42
Pass 4 Mic Audio Low
43
Unswitched #2 Low
43
Speaker Low
44
Unswitched #2 Audio
44
Speaker Output
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PMA8000B-MP3 Audio Selector Panel and Intercom System
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200-890-0600 Page 2-12 Rev. 6, Oct. 2010
2.10 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.
2.11 Unit Installation
To install the PMA8000B-MP3, 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.
2.12 Operational Checkout
2.12.1 Required Test Equipment
In order to return an aircraft to service after installation of the PMA8000B-MP3, 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 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 microphone 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 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.
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.
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.
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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 ALL, 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 sys-
tematically switching the unit on and off, while monitoring the other avionics and electrical equi pment 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 sens i-
tivity, verify that a 160 V, 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) 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 LOW sensitivity, with 430 Volts applied.
3. Connect the marker antenna and verify proper operation.
2.12.4 TEL Checkout
Press the TEL button. Verify that the pilot headset is connected to the cellular telephone system (if i nstalled). 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 place 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.
Press the Com receiver pushbutton that corresponds to the selected radio transmitter and Hold for approximately one second. This action will then automatically play back t he last recorded message. Press
and HOLD both buttons again to stop the play back, and then momentarily press again to play prior me ssages.
This audio should appear in the pilot and copilot headsets, and only be incoming transmissions from the
transceiver selected in the mic select switch. Depress the audio panel or yoke mounted playback switch,
and verify that messages play, in the order received. Repeat for COM 2. 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.
2.12.6 Function Button Checkout
While listening to the pilot’s headset, press and hold the “TEL” button. Press the AUX, MUTE and SPR
buttons, verifying that the annunciations play back in pilot headset. See operation section for information.
Incoming audio on selected com will stop the audio.
2.12.7 MP3 Player Checkout
Refer to Section 3.11 of this manual for detailed instructions on MP3 operation. A quick test can be conducted using the initial welcome message stored at the factory. Press and hold the TEL button, and press
the NAV 1 button. MP3 Power ON will be heard in the headset. The welcome message should begin to
play automatically.
If it does not, verify that the intercom is in “ALL” mode, and that the TEL is deselected (no green LED).
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PMA8000B-MP3 Audio Selector Panel and Intercom System
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200-890-0600 Page 2-14 Rev. 6, Oct. 2010
2.13 Final Inspection
Verify that the wiring is bundled away from all controls and no part of the installation interferes with ai rcraft 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 acco rdance 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 ba lance 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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200-890-0600 Page 3-1 Rev. 6, Oct. 2010
Section III OPERATION
3.1 SCOPE
This section provides detailed operating instructions for the PS Engineering PMA8000B-MP3, 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 five sections covering the basic operating areas of the PMA8000B-MP3 systems. They are Communications Transceiver Selection, Audio Selector, Intercom, Marker Beacon Receiver, and special functions.
Figure 3-1 PMA8000B-MP3 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 as well as unswitched input #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.
The power switch controls all audio selector panel functions, intercom and marker beacon receiver. All
pushbutton selections and function modes will be remembered and return to the last state when turned on.
3.2 Communications Transmit (XMT) Selection (2)
There are two pushbuttons associated with the transmitter selection. The two 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 PMA8000B-MP3-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 transmitter by pressing the COM 2 transmitter selector pushbutton. See
that the associated Com 2 receive pushbutton indicator light that is located immediately above the Com 2
transmitter pushbutton turns green. This guarantees that the pilot will always hear the audio from the
transceiver selected for transmit.
The PMA8000B-MP3 “remembers” the receiver selection, so that when switching transmitters from COM
1 to COM 2, if COM 2 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 while Com 2 was not previously selected, COM 1 audio will be
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switched off. In essence, switching the mic selector will not override prior selection of COM receiver audio.
In normal (not split) modes, the PMA8000B-MP3 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.
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 co ntinue. (See Section 3.4 —TEL—for more details)
The copilot will also be able to transmit on the other selected radio with his PTT as wel l.
3.2.1.1 Monitor Mode
The PMA8000B 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.
3.2.1.2 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.
When the split mode is activated, the intercom between the pilot and copilot is inhibited, although the
passengers can still talk among themselves. The crew intercom can be reactivated if desired by pressing
the “Mute” button. The indicator LED in the Mute button will be green when the intercom is off (muted),
and turn off to indicate that the intercom is not muted, and the crew can speak to each other. See § 3.4.7
for information.
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 aircraft conditions.
3.2.1.3 Swap Mode (Switch from Com 1 to Com 2 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.
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, MKR (Marker), 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.
In SPLIT mode, only the pilot will hear selected navigation audio.
3.4 Telephone (TEL) (9)
The TEL mode serves as a full duplex interface and distribution for telephone systems such as AirCell or
portable cellular phones with earpiece jacks. Pressing the TEL button activates the telephone mode.
This connects the telephone to the users as follows:
In ALL intercom mode, all crew and passengers will be heard on the phone when they speak. Com and
other selected radio audio is also heard in the headsets. If the pilot or copilot pushes the radio PTT, their
mic will be transferred to the selected Com radio. The telephone party will not hear ATC communic a-
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tions, and vice versa.
In CREW mode, only the pilot and copilot are connected to the telephone. Passengers will not hear the
telephone. The pilot and copilot will also have tran smit capability on the other selected transceiver.
In ISO intercom mode, when the PMA8000B-MP3 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 to the pilot.
NOTE
Because the cell-phone uses an intercom circuit, all stations on that circuit will lose intercom capabi lity
when the cell phone is in use.
3.4.1 Cellular telephone sidetone
As shipped from PS Engineering, the PMA8000B-MP3 does not provide cellular telephone sidetone (the
user’s voice fed back to the headset). Some cell phones do not provide sidetone. For units with serial number E10251 and above, telephone sidetone can be enabled by pressing the TEL and ADF buttons at the
same time, for more than one second. In units with serial numbers E10250 and below, an internal modification can be made that will allow the PMA8000B-MP3 to provide this sidetone. Contact PS Engineering
for more information.
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 (if enabled)
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 heard
over the speaker. During Public Address, the Mute and SPR buttons will
flash. To exit PA mode, push Mute and SPR again.
3.6 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 m inute.
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 mute the marker audio.
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Use "HI" sensitivity initially. This allows you to hear t he outer marker beacon about a mile out. Then
touch the smaller MKR button to switch into Low Sensitivity mode. “LO” sensitivity gives you a more
accurate location of the Outer Marker. 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 e xternal) are in working order. TST does not activate MM autopilot sense output. Releasing the button r eturns to the last sensitivity.
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.
Table 3-1 Mic Muff ™ Part Numbers
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
3.7.2 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.
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Adjust the radios and intercom volume for a comfortable listening level. Most gener al aviation headsets
today have built-in volume controls; therefore, volume also can be further adjusted at the individual headset.
3.7.2.1 Mono headsets in Stereo Installation
The pilot and copilot positions work with stereo or mono headsets. All passenger headsets are connected
in parallel. Therefore, if a monaural headset is plugged in to a PMA8000B-MP3 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.
3.7.3 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 Mute 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.
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 if provided by the radios during transmissions). Copilot will
hear passengers’ intercom and entertainment, while passengers will hear copilot intercom and entertai nment. Neither will hear aircraft radio receptions or pilot tran smissions. The pilot can listen to music 1 in
ISO mode. See §3.8.1 for more information.
ALL: All parties will hear the aircraft radio and intercom. Crew and passengers will hear selected ente rtainment. During any radio or intercom communications, the music volume automatically decrea ses. 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. They may also listen to Entertai nment 1. Passengers can continue to communicate with themselves
without interrupting the Crew and may listen to entertainment as configured.
3.7.4 Split Mode Intercom
When the PMA8000B enters the Split Mode (pilot on Com 1, copilot on Com 2) the intercom for the crew
is muted. Intercom communication can be restored, if desired, by pressing the Mute button on the audio
panel. The LED indicator in the MUTE button will indicate when the intercom is muted.
3.8 Music Muting (6)
There are two SoftMute™ muting circuits. The front panel "Mute" button has four music mute 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 intercom,
or 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 a nnunciations 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."
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♫ 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 an external switch installed either in the panel, or
connected to the AUX button logic output pin on the PMA8000B MP3.
3.8.1 Music in Pilot ISO mode
[Units above serial number E10251 only] If desired, the pilot can elect to hear Music #1, I 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 it will mute in accordance with the Mute mode as described in §3.8.
3.9 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
PMA8000B-MP3 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 pil ot 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 PMA8000B-MP3 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.
As shipped from PS Engineering, the PMA8000B-MP3 does not provide cellular telephone sidetone (the
user’s voice fed back to the headset), because this is often provided by the telephone itself.
Some cell phones do not provide sidetone. In PMA8000B MP3 Avidyne audio panels above serial number
D10251, telephone sidetone can be enabled by pressing the TEL and ADF buttons for more than one second. For units with serial number D10250 and below, an internal modification can be made that will a llow the PMA8000B-MP3 to provide this sidetone. Contact PS Engineering for more information.
NOTE
Because the cell phone uses an intercom circuit, all stations on that circuit will lose intercom capabi lity
when the cell phone is in use, unless the cellular phone provides it’s own sidetone.
PS Engineering does not guarantee compatibility with personal cellular telephones.
Visit www.ps-engineering.com for a list of phones that have been tested.
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Crew
3.10 Utility Jack
The 2.5-millimeter (3/32”) jack on the front of the PMA8000B-MP3 has three distinct functions:
Cell phone input
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.
3.10.1 Cellular phone
When a cellular telephone is connected to this jack using a 2.5 mm
to 2.5 mm adapter cord (PS Part Number 425-006-7026), the
PMA8000B-MP3 audio panel will connect the intercom to the cell
phone when the “TEL button is pressed (9), and behave as
described in section 3.7. The telephone ringer, if present, will be heard unless the input is muted by other
radio or intercom.
3.10.2 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.
3.10.2.1 Smart Jack Function
When the PMA8000B-MP3 has a signal on music
#1 input coming in from the rear connector (or
MP3 internal playing), the front panel jack
automatically becomes a Priority Advisory input,
and is heard in the crew headphones.
We’ve built some intelligence into the PMA8000B-MP3, too. If you have Music 1 connected to the rear
pins, and there is music playing, the PMA8000B-MP3 “knows” that what you put into the front jack must
be a priority. So the unit will automatically switch the jack to the priority mode.
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.
3.10.3 Music Input
When used as a music input, the front panel jack is treated as Music #1. However, thanks to the function
controls, it can be distributed to all users, depending on the intercom 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).
3.10.4 Smart Function Keys (SFK)
With Virtual Tech Support, the configuration process is self-directed. Once you’ve set up your system, you
don’t need to change it again, unless you want to. The unit will always remember your settings.
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 transmit (software level BPBC and above).
.Table 3-2 - SFK Functions, PMA8000B-MP3
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Figure 3-2 Smart Function Keys
Function A
AUX
Function B
MUTE
Function C
SPR
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”
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 PMA8000B-MP3 from doing its main
job.
Looking at the front panel you’ll notice that the TEL, Aux, Mute and SPR buttons have “Function” a ssignments.
To use these function keys A, B, C – press and hold “F” and then press the desired key, “A” “B” or “C”.
There are three special functions. Function Button “A” allows the front panel jack to be distributed to all
headsets..
Function Buttons “B” controls a monitor function (S/N E10251 and up) or B and “C” control how music
is distributed in your airplane (S/N E10250 and below).
There are two music sources available to the PMA8000B-MP3. Music 1 input can be either on 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)
3.10.5 Function “A” (Alternate Intercom Mode)
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 Function A 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.
3.10.6 Function “B” (Monitor Mode)
Pressing Function “B” 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.
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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 TEL and SPR, the audio will announce “Monitor on,” when activated, 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.
Note: In units below S/N E10250, Function B is Music 1, all headsets (see § 3.10.7 below).
3.10.7 Function “C” (Music Distribution)
Function Button “C” allows you either send the music 1 input to all intercom stations, 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.
Function “C” 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 Function “C,” again, you will 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.
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 pilot 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.”
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.
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PMA8000B-MP3 Audio Selector Panel and Intercom System
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Music Distribution Mode
Standard Music
Distribution
Alternate Music
Distribution
Music 1
All Headsets
Music
Source
ICS Mode
All
Crew
ISO
All
Crew
ISO
All
Crew
ISO
Front Panel
Jack
Crew
Crew
Copilot*
Crew
&
Pass
Crew
Copilot*
& Pass
Crew
Crew
Copilot*
Music 1 Input
Crew
Crew
Copilot*
Crew
&
Pass.
Crew
Copilot*
& Pass.
Crew
&
Pass.
Crew
&
Pass.
Copilot*&
Pass.
Music 2 Input
Pass.
Pass.
Pass.
Pass.
3.11 MP3 Music Controls
Above the top row of buttons are icons that relate to the MP3 player operation. Below the Shift/Function
legends, you’ll see a row of blue legends that refer to MP3 files and volume controls.
To activate these controls, you hold the Shift/Hold function, and press the desired button.
3.12 MP3 Player Operation
Turn MP3 on and off- Press Shift Key (TEL) (f) and MP3-ON/OFF (Nav1) (a). Audio annunciation will
be "MP3 on" or "MP3 off." The audio panel will always power up with the MP3 player switched off.
To toggle sequential and random play mode, Press Shift Key (TEL) and press Nav 2 (b). The audio annunciation will be “random,” or “sequential.”
To skip (c) to the next song, press Shift Key (TEL) and MKR.
To pause (d) MP3 play, press Shift Key (TEL) and ADF.
3.13 Music 1 & MP3 Volume (h & i)
The Music 1 and the MP3 volume PMA8000B-MP3 can be adjusted from the front panel, if desired, by
pressing the combinations of keys listed.
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Press Hold Function (TEL) and Vol Down (MUTE) (h) for more than one second to decrease music 1 or
MP3 volume. If the buttons are held down continuously, it will decrease the volume three steps per second
Press Hold Function (TEL) and Vol UP (SPR) (i) for more than one second to increase music 1 or MP3
volume. If the buttons are held down continuously, it will increase the volume three steps per second.
Note: Since it is possible to turn the volume completely off, you may need to turn th e 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.
3.14 File Transfer
The PMA8000B MP3 has 1 GB of internal storage. The program inside the unit will recognize and upload any compatible audio files (.wav, .mp3, unprotected .wma) from an external source, through the USB
cable.
3.14.1 Laptop transfer
Due to the transfer rate advantages, we recommend that you transfer files from a laptop to the PMA8000B
MP3 if possible. Direct USB device transfer requires 35-40 minutes to transfer 1G of songs; Laptops typically require 4-6 minutes for the same amount of data with USB 2 port.
PS Engineering recommends Microsoft XP operating system or later.
1. Using the supplied 2.5 mm-to-USB cable, along with the supplied USB-to-USB adapter cord (PS Part
number 425-003-1454), connect this set of cables from the PMA8000B MP3 front panel jack to a PC
USB port.
2. With the audio panel turned off, push and hold the ”Transfer” (AUX) while powering the PMA8000B
MP3 on Hold the button until the laptop recognizes the unit as an external drive, and opens a dialog
box.
3. When windows recognizes the PMA8000B MP3 as a removable drive, select “Open folder to view
files using Windows Explorer”
4. Create a subfolder (name it whatever you wish, like “PlaneMusic”) on your audio panel to contain the
specific music files you will want on the airplane.
5. Copy the desired music into this folder.
6. After transfer is complete, turn the audio panel off to return to normal operation.
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PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 3-12 Rev. 6, Oct. 2010
3.14.2 Transfer using USB Drive
For best results, the following procedure should be used for a USB device when used with the PMA8000B
MP3. The USB drive should be reformatted before being used with the PMA8000B MP3 and only music
files should be stored, in a single subfolder on the USB Device.
1. Connect the USB Drive to your PC
2. From “Start” select “My Computer” and select the external drive.
3. Right Click on the device, and select “Format. . .”
4. Select “FAT” as File system, and “Start” WARNING, this will erase all files on this device.
5. After formatting is complete, right click in the drive, and select “New. . . Folder” and create a new
folder for your music that you will put on your PMA8000B MP3
6. Transfer your music files into the new music folder.
We recommend having 1G or less files on the audio panel, to ensure that all the desired songs are played.
Because of the Microsoft file protocol, we cannot predict which files will be omitted.
To upload from a USB memory device, connect the USB drive to the unit, using the supplied 2.5 mm to
USB cable.
Press and hold the Hold Function (TEL) and Transfer (AUX) buttons until that unit announces
“Transferring.” The annunciation will also give status reports approximately as each 20% of the data is
transferred, for transfers lasting more than one minute..
After the music transfer is complete, the PMA8000B MP3 will automatically reset to store the files and
create the new play list. Therefore it is not advisable to upload files in flight or when the audio panel is
otherwise in use.
Different types of files, and music file programs may result in variation in the volume level of the music.
The maximum transfer rate will decrease by about 1% each time the unit is uploaded, therefore fr equent
music upload is not advised.
Notes:
1. The PMA8000B-MP3 only supports Wave (.wav), unprotected Windows Media Files (.wma) and
MP3 (.mp3) file types. It does not support iTunes format files. Different types of files, and
different music file programs may result in variation in the volume level of the stored music.
2. PS Engineering recommends using only first quality USB Flash drives, for consistent file transfer
results.
Page 34
PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 3-13 Rev. 6, Oct. 2010
3.15 Internal Recorder
The Intercom Recording System is a digital recording system allowing automatic storage
and playback of aircraft radio traffic.
Operating as a continuous loop recorder, (last message received will be the first heard),
the recorder has 40 seconds of recording time, or up to 8 messages. With its own built in
voice-activation circuit, there are no buttons to press to start recording. The system
automatically begins to record the instant the radio becomes active. Only the com radio
selected for transmit is recorded, and only the pilot and copilot will hear the playback
audio. If the radio becomes active during playback, the playback will stop, and it will not
record this communication.
3.15.1 PLAYBACK
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. The recorded audio will begin to play. You can either wait for the message to
finish playing before accessing the prior message, or cancel the playback. To cancel the
playback, press and hold the playback button for two seconds. The next time the button is
pressed for one (1) second, the prior message will be heard.
The playback will stop whenever there is more incoming selected com audio, and the
message you were hearing can be replayed from the beginning by pressing the Com
receive button again.
All messages are erased when you change the selected transmitter.
A remote playback button may be installed.
Figure 3-3 Playback Controls
Page 35
PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Page 4-1 Rev. 6, Oct. 2010
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, the unit must be returned to PS Engineering,
Inc., or an authorized warranty service facility, for no-cost repair.
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 cons equential 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 wa rranty 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 (865) 988-9800 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
(865) 988-9800 FAX (865) 988-6619
Email: support@ps-engineering.com
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.
Page 36
PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Appendix A Rev. 6, Oct. 2010
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 tran smissions.
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 c opilot.
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 oper ation.
Below are some examples of typical modifications. Contact the PTT manufacturer for more details if ne cessary.
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
Page 37
PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Rev. 6, Oct. 2010
Appendix B – PMA 8000 Installation Drawings
475-013-0001 Lock nut (4 ea)
44-pin connector (2 ea)
Rack back plate
430-890-0050
475-440-0004 (4 ea)
475-440-0007 (4 ea)
Rack
430-890-0040
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)
0.37 in
3.87 in
5.53 in
6.04 in
0.36 in
0.96 in
1.28 in
6.31 in
1.28 in
Caution: Apply stea d y pr e ssure t o the b ezel while s cr ewi n g t h e unit i n t o the tray to
ensu r e eve n seati n g of t h e u n i t and co n n ecto r s.
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PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Rev. 6, Oct. 2010
Appendix C – J1 Connector Interconnect
Co m 1 Aud io H i
Co m 1 Mic K ey
Co m 1 Lo
Communications
Transceiver #1
Communications
Transceiver #2
Na v 1 A ud io Hi
Na v 1 A ud io Lo
VHF Nav 1
Na v 2 Aud io H i
Na v 2 Aud io Lo
VHF Nav 2
DM E A ud io Hi
DM E A ud io Lo
DME Receiver
Com 2 SPR Load
Un switch ed Inpu t #1 Hi
Un switch ed Aud io L o
Unswitched Audio #1
Un switch ed Inpu t #2 Hi
Un switch ed Aud io L o
Unswitched Audio #2
Pil ot M ic Au dio H i
Pilot Mic PTT
Pil ot M ic Lo
36
37
38
39
MKR Ant.
1
2
RG -58 A/U Coa x
9
10
11
12
Co m 1 Mic A udi o Hi
Co m 2 Aud io H i
Co m 2 Mic K ey
Co m 2 Lo
13
14
15
30
Co m 2 Mic A udi o Hi
17
18
19
20
21
22
Co m 2 Spr Loa d
Co m 2 Spr Loa d
27
28
31
32
44
43
33
34
35
Telephone
3
4
5
TE L A udio Hi
TE L M ic Au dio Hi
TE L A udio Lo
AD F A udi o Hi
AD F A udi o Lo
ADF Receiver
7
8
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.
COM 2 Speaker load is the only one provided in the PMA8000.
5. All shielded wires must be MIL 22750 or 27500.
6. Unswitched inputs 1, is always presented to speaker
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.
8. No connection to pins 25, and 26
9. DME audio is passed when AUX button is pressed
10. Unswitched #3 is adjustable
11. Unswitched #2 is selectable over the speaker
Pilot PTT
See Note 4
PMA8000B MP3 Connector, J1 (Sub-D 44-pin, male on tray)
Un switch ed Inpu t #3 Hi
Un switch ed Aud io L o
Unswitched Audio #3
29
See Note 6, 10 & 11
AT/AGT.01, AT/AGT.02, ACM2000
TE L A udio Hi
TE L M ic Au dio Hi
TEL Lo
3
4
5
M
B
L
K
Guardian 1000
Co m 3 Mic K ey - No C on nect
23
11
24
25
AirCell
Interconnect
Pa ss. P hone s (R )
Pa ss P hon es (L )
Pa ss. P hone s L o
Pa ss. 1 Pho ne sJack
Pa ss. 4 Pho ne s Jack
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
Ext. Marker Annunciator
Pa ss. 3 Pho ne s Jack
Pa ss. 2 Pho ne s Jack
24
COM Active Output
3/32" Cellular Jack
TEL Mic Input
TEL Audio
TEL Audio Lo
Ce llula r Plug (typ ical)
Tip= Microphone out
Ri ng= S pe ake r a udio
Ba se= Grou nd
Cellular Phone
Interconnect
TE L A udio Hi
TE L M ic Au dio Hi
TEL Lo
See Note 7
3
4
5
PMA8000- J1
PMA8000- J1
AU X A udio Hi
AU X A udio Lo
AUX Receiver
23
41
40
42
Page 39
PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Appendix D Rev. 6, Oct. 2010
Appendix D – J2 Connector Interconnect
22
20
31
16
1
35
36
24
23
25
4
3
2
Copilot Phones (R)
Copilot Phones (L)
Copilot Phones Lo
Pass. 1 Mic Jack
Pass. Mic Lo
Pass. Mic Hi
37
38
Pass. 2 Mic Jack
Pass. Mic Lo
Pass. Mic Hi
39
40
Pass. 3 Mic Jack
Pass. Mic Lo
Pass. Mic Hi
41
42
Pass. 4 Mic Jack
Pass. Mic Lo
Pass. Mic Hi
32
33
34
Copilot Mic Audio
Copilot PTT
Copilot Mic Lo
Copilot PTT
Copilot Mic Jack
14
13
Ent. #2 Mute
12
Playback
PMA8000B MP3 J2 CONNECTOR
(Sub-D 44-pin male on tray)
Ent. #2 Input
27
26
28
Ent. #2 Audio (R)
Ent. #2 Audio (L)
Ent. #2 Audio Lo
19
________
PA Active
Note 8
Notes:
Ent. #1 Audio (R)
Ent. #1 Audio (L)
Ent. #1 Audio Lo
Ent. #1 Input
5
6
7
Copilot PhonesJack
Pilot Phones (R)
Pilot Phones (L)
Pilot Phones Lo
Pilot PhonesJack
Backlighting
See Sect. 2.4.2
8
9
Ground Lug
Airframe Ground
11-33 VDC
See Note 4
PA Mute
18
29
30
Speaker Hi
Speaker Lo
44
43
Swap
Switch
Swap
10
11
Cockpit Speaker
1. All Power, and Ground wires must be #22 gage wire
Lighting #22 AWG, other wires minimum #24 AWG.
2. All shields should be grounded at audio panel only,
other end remains floating
3. Pins 8 and 9 connected through a 5 A breaker.
4. PA Mute is a TTL level logic output that is pulled
low when PTT active.
5. All shielded wires must be MIL 22750 or 27500.
6. Optional switch to remotely activate playback
7. For music distribution information, see Section 2.5.1.
8. 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.
9. AUX enable goes low when AUX button is on. May be used for
passenger mute inhibit by connection to pin 13
or PA mode when connected to Pin 19. Should NOT be
used when DME is installed and played through AUX
10. Reserved
11. No connection to Pin 17
12. 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.
13. Unswitched 4 audio low connected where
convenient, but should NOT go to music low
Unswitched Input #4 Hi
Unswitched Audio Lo
Unswitched Audio #4
15
See Note 9
7
6
5
28 V Lights Hi
28-Volt lights low
7
6
5
14 V Lights Hi
14-Volt lights low
AUX Enable
See Note 9
5A Breaker
See Note 3
Note 6
Note 12
Note 13
Backlighting
See Sect. 2.4.2
Page 40
PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Appendix E Rev. 6, Oct. 2010
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 PMA8000B-MP3, you may use the following text as a guide.
Installed audio selector and 6-place intercom, PS Engineering PMA8000B-MP3, part number 050-890(XXXX) in ( location ) at station . Installed per AC43.13-2B, Chapter 2. Installed per PS Engineering In-
stallation 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 AC43.13-2B, 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 PMA8000B-MP3
added.
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 .
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 (865) 988 -9800 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
Page 41
PS Engineering
PMA8000B-MP3 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0600 Appendix F Rev. 6, Oct. 2010
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
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
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