9800 Martel Road
Lenoir City, TN 37772
www.ps-engineering.com
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Document P/N 200-920-0000
Rev. 9, January 2011
Audio Selector Panel with Marker Beacon Receiver
High-fidelity Stereo Intercom
System Installation and Operation Manual
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. 2011 ©
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.
For use in Experimental/Non-certified aircraft ONLY
Not intended for installation in certified aircraft
The product warranty is not valid unless this product is installed by an
Authorized PS Engineering dealer.
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 — NONE................................................................................................... 1-2
1.5 SPECIFICATIONS.................................................................................................................... 1-2
1.6 EQUIPMENT SUPPLIED......................................................................................................... 1-3
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...................................................................... 2-1
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 TELEPHONE (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 ........................................................................................................... 2-7
2.5.2 ENTERTAINMENT MUTING.......................................................................................................... 2-7
2.5.3 CONFIGURING MUSIC INPUT WITH DATA ENTRY KNOB ............................................................... 2-7
2.5.4 PLAYBACK BUTTON INSTALLATION ............................................................................................ 2-7
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 .................................................................. 2-9
2.8.1 AUDIO ACTIVE OUTPUT............................................................................................................. 2-9
2.9 PMA9000EX PIN ASSIGNMENTS................................................................................................ 2-10
2.10 POST INSTALLATION CHECKOUT............................................................................................. 2-11
2.11 UNIT INSTALLATION ................................................................................................................ 2-11
2.12 OPERATIONAL CHECKOUT ...................................................................................................... 2-11
2.12.1 REQUIRED TEST EQUIPMENT.................................................................................................. 2-11
2.12.2 AUDIO PANEL TEST............................................................................................................... 2-11
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page ii Rev. 9, Jan. 2011
2.12.3 MARKER CHECKOUT ............................................................................................................. 2-12
2.12.4 TELEPHONE CHECKOUT..................................................................................................... 2-12
2.12.5 INTERNAL RECORDER CHECKOUT .......................................................................................... 2-12
2.13 FINAL INSPECTION................................................................................................................... 2-12
Section III OPERATION.................................................................................................................. 3-1
3.1 SCOPE ....................................................................................................................................... 3-1
3.2 POWER AND FAIL SAFE (1)........................................................................................................... 3-1
3.3 COMMUNICATIONS TRANSMIT (XMT) SELECTION (2) ................................................................ 3-1
3.3.2 INTERNAL RECORDER................................................................................................................ 3-2
3.4 COM AUDIO SELECTOR (3) ........................................................................................................ 3-1
3.5 NAVAID AUDIO SELECTION (4)..................................................................................................... 3-1
3.6 MARKER BEACON OPERATION (5)............................................................................................... 3-1
3.7 INTERCOM OPERATION (6) .......................................................................................................... 3-1
3.7.1 INTELLIVOX® VOX-SQUELCH.................................................................................................... 3-1
3.7.2 INTERCOM VOLUME CONTROL (7).............................................................................................. 3-2
3.7.3 INTERCOM MODES .................................................................................................................... 3-3
3.8 ENCODER AND PUSH-PUSH SWITCH - ECAPS (8)........................................................................ 3-3
3.8.1 SPEAKER AMPLIFIER.................................................................................................................. 3-4
3.8.2 ALTERNATE INTERCOM FUNCTION MODE................................................................................... 3-4
3.8.3 MUSIC SOURCE/DISTRIBUTION................................................................................................... 3-5
3.8.4 MUSIC VOLUME ........................................................................................................................ 3-6
3.8.5 MUSIC MUTE CONTROL ............................................................................................................. 3-7
3.8.6 MP3 CONTROLS........................................................................................................................ 3-7
3.8.7 MP3 UPLOAD............................................................................................................................ 3-9
3.9 UTILITY JACK (9) ...................................................................................................................... 3-10
3.9.1 CELLULAR PHONE (WIRED) ...................................................................................................... 3-10
3.9.2 MUSIC INPUT .......................................................................................................................... 3-10
3.9.3 AUDIO ADVISORY INPUT.......................................................................................................... 3-10
3.10 TELEPHONE MODE .................................................................................................................. 3-11
3.10.1 BLUETOOTH TELEPHONE CONNECTION .................................................................................. 3-11
3.10.2 TELEPHONE (TEL) OPERATION .............................................................................................. 3-11
3.11 LIQUID CRYSTAL DISPLAY CONTROL ...................................................................................... 3-12
3.12 SECONDARY NAVAID SELECTION (ADF, DME, AUX) ............................................................. 3-12
3.13 PUBLIC ADDRESS FUNCTION.................................................................................................... 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 – PMA9000EX Installation Drawings ..............................................................................B
Appendix C – J1 Connector Interconnect.............................................................................................C
Appendix D – J2 Connector Interconnect.............................................................................................D
Rev
Date
Change
1
Sept. 2007
Added more operation details, general clean up
2
Oct. 2007
Updated user interface
3
Nov. 2007
Updated functionality of encoder knobs.
4
March 2008
Increased MP3 memory to 1 GB
5
May 2008
Changed to show cell sidetone enabled at factory
6
June 2008
Removed extra incorrect references
7
August 2008
Updated file transfer information
8
Sept. 2008
Changed TEL sidetone to disable at factory
9
Jan. 2011
Improved fround lug installation Appendix B
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 1-1 Rev. 9, Jan. 2011
Section I – GENERAL INFORMATION
1.1 INTRODUCTION
The PMA9000EX represents another evolutionary step in cockpit audio control and intercommunications
utility. Using our patented IntelliVox® design, front panel utility jack, and pilot programmable configur ations, this marks the next level of audio control. The unit is designed for outstanding ergonomics and
visually defined mode annunciation and selection.
For use in Experimental/Non-certified aircraft ONLY
This unit is not intended for installation in certified aircraft
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 PMA9000EX.
1.2 SCOPE
This manual provides detailed installation and operation instructions for the PS Eng ineering
PMA9000EX-series of Audio Selector Panel/Intercom Systems. This includes the following unit:
Model
Description
Part Number
PMA9000EX
Stereo Audio Selector Panel with Marker Beacon, Bluetooth
Interface and MP3 capability, includes utility jack and I nternal Recorder System
050-920-0202
1.3 EQUIPMENT DESCRIPTION
The PMA9000EX is a state-of-the-art audio isolation amplifier and audio selector that contains an aut omatic 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).
A full duplex TELEPHONE mode allows the PMA9000EX 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 PMA9000EX must be interfaced with an approved system.
There are five unswitched inputs, available for traffic or EGPWS, autopilot disconnect tones, and/or radar
altimeter 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 PMA9000EX 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
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 1-2 Rev. 9, Jan. 2011
A six-station voice activated (VOX) intercom is included in the PMA9000EX. 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 concentric rotary data input knob on the right side of the unit controls less essential functions and configurations.
An internal MP3 section allows the user to upload digital music files, while a Bluetooth section allows
connection with Bluetooth-enabled telephones.
A 3-light, 75 MHz Marker Beacon receiver is integrated in the PMA9000EX. 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 — NONE
The PMA9000EX is not approved for installation on US Registered Civilian Aircraft with normal
airworthiness certificates.
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
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
PMA9000EX 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)
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 1-3 Rev. 9, Jan. 2011
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, TELEPHONE, 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)
1.6 EQUIPMENT SUPPLIED
1 ea. of the following items:
Model
Description
Part Number
PMA9000EX
PMA9000EX Audio Panel with Marker Beacon and Stereo intercom.
050-920-0202
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 1-4 Rev. 9, Jan. 2011
Installation Kit: 250-890-0000, containing:
Description
Quantity
Part
Number
Installation rack assembly
1
430-890-0040
Rack back plate
1
430-890-0050
44-pin connector kit
2
120-891-2045
Backshell, connector
2
625-025-2465
Backshell 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/nylon patch
4
475-440-1038
4-40 x ¼” screw with lock washer
2
475-440-0001
Solder Lug
2
475-009-0001
Cable Clamp
1
625-001-0002
#6-32 x ½” Flat head Philips screw
6
475-632-0012
#6-32 Clip Nut
6
475-630-0002
Parts ID Sheet
1
002-890-0404
Cable, USB to 2.5 mm 4-conductor, PS Part Number 425-921-3983
Cable, USB-to-USB PC 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 PMA9000EX
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 1.5:1, and appropriate for the ai rspeed)
h. Interconnect Wiring
1.8 OPTIONAL ITEMS
a. Cell Phone Patch Cord, 2.5 mm to 2.5 mm, PS Part Number 425-006-7026
b. Music Patch Cord, 3.5 mm to 5.5 mm, PS Part Number 425-006-2535
c. Phone patch cord for iPhone or Blackberry 3.5 mm 4-conductor to 2.5 mm
(Phone only, no music) 425-006-0354
1.9 LICENSE REQUIREMENTS
None
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-1 Rev. 9, Jan. 2011
Section II - INSTALLATION
2.1 GENERAL INFORMATION
2.1.1 SCOPE
This section provides detailed installation and interconnection instructions for the PS Engineering
PMA9000EX Audio Selector Panel/Intercom/ with internal Marker Beacon.
Please read this manual carefully before beginning any installation to prevent damage and postinstallation problems. Installation of this equipment requires special tools and knowledge.
2.1.2 Certification Requirements
NOTE
The PMA9000EX is not approved for installation in certified aircr aft.
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 mat erial 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 PMA9000EX 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 PMA9000EX must be rigidly mounted to the instrument panel of the aircraft structure, within view
and reach of the pilot position(s). 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
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 PMA9000EX. The connectors are a subminiature crimp-type, and require the use a hand crimp tool, from table below (or equiv.). The connectors
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-2 Rev. 9, Jan. 2011
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).
Two grounding lugs are provided, which may be attached to the rear mounting plate with 2 ea #4 -40 x ¼”
screws with captivated lock washers. These provide a convenient location to connect the shield ground
terminations.
Manufacturer
Crimping Tool
Positioner
Extraction tool
AMP
601966-1
601966-6
91067-1
Daniels
AFM8
K42
M24308-1
ITT-Cannon
995-0001-584
995-0001-739
91067-1
Table 2-1 Connector Pin crimping tools
2.4 Cable Harness Wiring
Referring to the appropriate Appendix, assemble a wiring harness as required for the installation. All
wires must be MIL-SPEC in accordance with current regulations. Two- and three-conductor shielded wire
must be used where indicated, and be MIL-C-27500 or equivalent specification. Proper stripping, shielding and soldering technique must be used at all times. It is imperative that correct wire be used.
Refer to FAA Advisory Circular 43.13-2A for more information. Failure to use correct techniques may
result in improper operation, electrical noise or unit failure. Damage caused by improper installation will
void the PS Engineering warranty.
2.4.1 Noise
Due to the variety and the high power of radio equipment often found in today's general aviation aircraft,
there is a potential for both radiated and conducted noise interference.
The PMA9000EX 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 eli minate 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 PMA9000EX for the power supply to work in its designed regulation.
Otherwise, it cannot adequately attenu ate 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 PMA9000EX was designed in a RFI hardened chassis and has internal Electromagnetic Interference (EMI) filters on all inputs and ou tputs.
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 the ground lugs mounted on the back
plate shown in Appendix B.
Radiated signals can be a factor when low level microphone signals are "bundled" with current carrying
power wires. Keep these cables physically separated. It is very important that you use insulated washers to
isolate the ground return path from the airframe to all headphone and microphone jacks.
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-3 Rev. 9, Jan. 2011
2.4.1.1 Music Inputs and Noise
PMA9000EX units utilize a differential input to help prevent noise from entering the music system. This
feature is usually transparent to the installer, however, it is important that the appropriate music signal
and ground connections are made directly to the dedicated music signal and ground inputs on the
PMA9000EX. 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 ai rframe
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 PMA9000EX will become instantly available. Be advised, the PMA9000EX does not support 3 VHF
Coms, however. The PMA9000EX handles two COM transceivers and a full-duplex cellular/satellite telephone.
Added capabilities include, IntelliVox®, DuTel™ duplex telephone, improved music fidelity and Soft
Mute™ and Karaoke™ muting modes, improved and more flexible music distribution control, internal
recorder function, and additional unswitched audio inputs.
2.4.3 Power
The PMA9000EX 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
PMA9000EX 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 PMA9000EX is designed to interface with standard aircraft avionics, and presents a 500 receiver
impedance. For best results, a twisted-shielded cable is recommended from the avionics audio source to
the audio panel, with the shield grounded at the audio panel end.
Some avionics do not provide a separate audio low, and may introduce additional electrical noise into the
system. For best results, connect the audio low from the audio panel to the radio ground, using one conductor of the twisted-shielded cable.
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-4 Rev. 9, Jan. 2011
2.4.5.1 Speaker Load
The PMA9000EX 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 PMA9000EX (J1
27 WRT 28). The speaker load is 16 , 3W.
2.4.6 TELEPHONE (Duplex) Function for Cell Phones
The TELEPHONE mode in the PMA9000EX is also compatible with many cellular telephones with
hands-free headset interfaces, including Bluetooth®.
If a wired connection is desired, 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 pa nel. The wired interface jack is connected with the PMA9000EX 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
TEL Mic Input
TEL 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 PMA9000EX does not provide cellular telephone sidetone (the
user’s voice fed back to the headset). Some cell phones do not have sidetone, which may result in loud or
distorted sidetone. If sidetone is desired, an internal modification can be made that will allow the
PMA9000EX to provide this sidetone. Contact PS Engineering for more information.
NOTE
FCC Regulations (47 CFR 22.925) prohibit airborne operation of cellular phones;
Cellular telephones installed in or carried aboard airplanes, balloons or any other type of aircraft must not
be operated while such aircraft are airborne (not touching the ground). When any aircraft leaves the
ground, all cellular telephones on board that aircraft must be turned off. The use of cellular telephones
while aircraft is on the ground is subject to FAA regulations.
FAA Regulation 14 CFR 91.21(5) allows for use of portable electronic devices that the operator of the
aircraft has determined will not cause interference with the navigation or communication system of the
aircraft on which it is to be used.
PS Engineering, Inc. does not endorse using unapproved cellular telephone equipment in flig ht, 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.
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-5 Rev. 9, Jan. 2011
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 PMA9000EX 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 Volt 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.
The LCD display has backlighting that is controlled by the automatic photocell dimming. In addition, the
text inverts for nighttime mode when the ambient light is low. As the light decreases to a dim sunlight,
the LCD backlighting will turn on, and you may notice a brightening of the LCD under some conditions.
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 510 Ω 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
J1, pins 31, 29 and J2 pin 15 are unswitched, unmuted inputs # 1, 3 and 4, respectively. These inputs are
presented to the pilot and copilot regardless of the audio configuration, and will always mute the ente rtainment inputs. These 510Ω inputs can be used for altimeter DH audio, GPS waypoint audio, autopilot
disconnect tones, or any other critical audio signal. Unswitched #1 is always presented to the speaker.
Unswitched 3 and 4 inputs are always presented to the crew headphones and to the aircraft speaker.
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 mode 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.
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-6 Rev. 9, Jan. 2011
NOTE
Inputs 1, 2 and 4 are fixed (1:1), and any audio level adjustments must be made at the input source. Unswitched #3
has a variable adjustment control located on the bottom side of the unit. This control allows you to 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.
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
Using the ECAPS data control, the PMA9000EX can be placed into Public Address (PA) mode. In this
mode, the pilot will be talking over the cockpit speaker when he presses his PTT switch. Copilot will still
continue on the selected COM radio.
When the Public Address is active, C1 and C2 indicators flash to indicate that th e pilot’s microphone is
tied to the PA.
2.4.11.1 PA Control Output (J2, Pin 19)
When PA Control Output is enabled, J2 Pin 19 will go low when in PA mode, providing a logic level that
can be used to incorporate a speaker-switching scheme. This 50 mA circuit (10Ω Z) can control a switching means such as a relay that would transfer the speaker output amplifier from the cockpit speaker to
drive another cabin speaker. If the PA mode is used with a microphone in proximity to an active cockpit
speaker, feedback might result.
To enable the PA discrete Output located at the rear connector, the internal configuration jumper, J4,
MUST be placed across both pins in the header. This jumper is shipped as open from the factory. Contact
PS Engineering for details on changing this configuration jumper.
2.4.12 PA Mute (J2, Pin 12)
Pin 12 of J2 is a TTL logic output that is pulled low during radio 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 mode is activated. 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.
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 th e 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.
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-7 Rev. 9, Jan. 2011
2.5.1 Entertainment Inputs
The PMA9000EX has three music sources. Two INDEPENDENT inputs wired into the rear connectors,
PLUS a front mounted jack that is connected to Entertainment 1, and an internal MP3 player that can
store 1 Gigabyte (512 MB before serial number B01094) of digital music files.
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.
NOTE
Us e the low lev el ou t put of any a ddition a l enter t a i n m e n 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 i s 3 VA C p-p. D O NOT u s e a sp e a ker -l eve l outp u t ,
this wi l l 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 PMA9000EX-system incorporates a "Soft Mute™" system. This will mute the entertainment devices
during ICS or radio conversation.
The Karaoke mode (disabling crew SoftMute™) is controlled through the data selector on the primary
display. 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 prio rity.
CAUTION
Local oscillators and internal signals from entertainment equipment can cause und esired interference with
other aircraft systems. Before takeoff, operate the entertainment devi ces to determine if there is any adverse effect within the aircraft systems. If any unusual operation is noted in flight, immediately switch off
the entertainment devices.
All additional entertainment devices must be switched off for both takeoff and landi ng.
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 mode control 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 Data Entry Knob
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 th e pilot and copilot. Muting
(SoftMute™) is controlled by the front panel “mute” selection on the primary display.
If the inputs are intercom mode dependent, input 1 goes to the pilot, copilot and all passengers when the
intercom is in the “ALL” mode. In “ISO” mode, the copilot and passengers will hear music input 1. Music
2 is ONLY active in CREW mode, and then provided only to the passengers. The passenger SoftMute™
control becomes active in CREW.
If the single-source mode is activated through the data input, 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.
2.5.4 Playback button Installation
Internal Recorder can be played back from the front panel by pressing the com radio selected for transmit
(C1 or C2) for 1 second.
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-8 Rev. 9, Jan. 2011
A remote momentary, normally open (NO) push button switch may be installed if desired to activate the
Recording System playback remotely. 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 PMA9000EX, 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 AC43.13-2A (or later
revision), Chapter 3, for information on proper antenna installation techniques. The marker beacon antenna must be mounted on the bottom of the ai rcraft.
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 PMA9000EX to flight control systems. This
function will not operate during the test mode. This output will go to +4.5 VDC ( 1.0 VDC) when a valid
Middle Marker signal is received. This output is J1, pin 39.
2.7 Adjustments
The PMA9000EX is factory adjusted to accommodate the typical requirements for most aircraft configur ations. There are three adjustments in the top cover that allow the installer to tailor the specific functions.
Figure 2-2- PMA9000EX Adjustments, top cover
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
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-9 Rev. 9, Jan. 2011
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).
LCD CST: adjusts display contrast.
Figure 2-3 – Unswitched 3 Audio Level (bottom cover removed)
2.8 Communications Antenna Installation Notes
For best results while in Split Mode, it is recommended that the one VHF communications antenna is located on top of the aircraft while the other communications antenna is installed on the bottom. Any antenna relocation must be accomplished in accordance with AC 43.13 -2A, 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 PMA9000EX 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.
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-10 Rev. 9, Jan. 2011
2.9 PMA9000EX 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
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-11 Rev. 9, Jan. 2011
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 PMA9000EX, 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 PMA9000EX, 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 t he 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.
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-12 Rev. 9, Jan. 2011
12. Verify proper operation of all receiver sources by selecting them using the appropriate means. The N1
and N2 indicators illuminates to show which source is in use, ADF, DME AUX and MKR are indicated in the display.
13. Activate the SPR mode. 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 uni t under test in HI sensi-
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 (MKR) has been selected. 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 TELEPHONE Checkout
Activate the TELEPHONE mode. Verify that the pilot headset is connected to the cellular telephone system (if installed). Verify that by using the pilot side PTT, the pilot can transmit on the other selected radio
(Com 1 or Com 2). The telephone function will 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. NOTE: Due to the
continuous nature of AWOS information broadcasts, these will not be properly stored, and should not be
used for testing purposes.
Press the Com XMT pushbutton that corresponds to the selected radio transmitter and hold for approximately one second. This action will then automatically play back the last recorded message. Press and
HOLD both buttons again to stop the play back, and then momentarily press again to play prior messages.
This audio should appear in the pilot and copilot headsets, and only be incoming transmissions from the
transceiver selected in the mic select switch.
If installed, check the audio panel or yoke mounted playback switch, and verify that messages play, in the
order received. Repeat for COM 2.
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.
Return completed warranty registration app lication to PS Engineering, or complete online at www.psengineering.com.
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 3-1 Rev. 9, Jan. 2011
Section III OPERATION
3.1 SCOPE
This section provides detailed operating instructions for the PS Engineering PMA9000EX, Audio Selector
Panel/Marker Beacon Receiver/Intercom Systems. Please read it carefully before using the equipment so
that you can take full advantage of its capabilities.
This section is divided into sections covering the basic operating areas of the PMA9000EX systems. They
are Communications Transceiver Selection, Audio Selector, Intercom, Marker Beacon Receiver, entertainment, telephone, and display/data controlled functions.
Figure 3-1 PMA9000EX Operating controls
3.2 Power and Fail Safe (1)
Unit power is turned on and off by pushing the volume (left) 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 menu modes (except Bluetooth telephone association) will be remembered and
return to the last state when turned on.
3.3 Communications Transmit (XMT) Selection (2)
The two buttons C2 and C2 (# 2) in the XMT section control which communications radio 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. A green LED above the button illuminates to indicate that the audio is
selected.
The PMA9000EX-Series has an automatic com receiver 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
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 3-2 Rev. 9, Jan. 2011
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 PMA9000EX “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
switched off. In essence, switching the mic selector will not override prior selection of COM receiver audio.
In normal (not split) modes, the PMA9000EX gives priority to the pilot’s radio Push-To-Talk (PTT). If
the copilot it transmitting, and the pilot presses his PTT, the pilot’s microphone will be heard over the
selected com transmitter.
3.3.1.1 Split Mode
The split mode can be activated at any time by pressing the C1 and C2 XMT buttons at the same time.
This places the pilot on COM 1 and the Copilot on COM 2.
Pilot on COM 2 and Copilot on COM 1 is not possible.
NOTE
Due to the nature of VHF communications signals, and the size constraints in general aviation aircraft, it
is probable that there will be some bleed-over in the Split mode, particularly on adjacent frequencies. PS
Engineering makes no warranty about the suitability of Split Mode in all aircraft conditions.
3.3.1.2 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.
3.3.2 Internal Recorder
The PMA9000EX comes equipped with an internal recorder. This digital system stores the last incoming
audio from the radio you have selected for transmit. It can store as many of 16 incoming messages, and up
to 30 seconds of audio. The pilot and copilot hear the playback. It is also possible to modify the unit to
exclude the copilot from the playback, and annunciation playback. Contact PS Engineering, for more d etails.
3.3.2.1 Playback
Recording is automatic. To play back the message, press and hold the XMT button for the communications radio that is selected for transmit for about 1 second or until the message plays back.
To stop the, hold the same button until the playback stops, about 2 seconds. Then the next 1-second press
will play the next earlier message stored.
The playback will stop automatically when the selected com audio becomes active again. Press the button
again to start the message again. The audio received during playback is NOT stored.
Figure 3-2 Playback Controls
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 3-1 Rev. 9, Jan. 2011
3.4 COM Audio Selector (3)
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.
In SPLIT mode, only the pilot will hear selected navigation audio.
3.5 Navaid Audio selection (4)
VHF Navigation receiver audio is selected through two momentary, pushbutton, backlit switches.
The users can identify which receivers are selected by noting which green
LEDs are lit above the button. Navigation aid audio push buttons are labeled N1, N2.
The MKR (Marker), ADF AUX (auxiliary) and DME audio is available when selected through the
ECAPS graphical and data control system.
3.6 Marker Beacon Operation (5)
The Marker Beacon Receiver uses visual and audio indicators to alert
you when the aircraft passes over a 75 MHz transmitter.
The Blue lamp, labeled “O”, is the Outer Marker lamp and has an
associated 400-Hertz 'dash' tone. The lamp and tone will be keyed at
a rate of two tones/flashes per second when the aircraft is in the range of the Outer Marker Beacon.
The Amber lamp, labeled “M”, is the Middle Marker lamp and is coupled with a 1300 Hertz tone. It is
keyed alternately with short 'dot' and long 'dash' bursts at 95 combinations per minute.
The White lamp, labeled “I”, is the Inner marker and has a 3000 Hertz 'dot' tone. The lamp and tone will
be keyed at a rate of six times per second.
The MKR button controls audio selection, marker sensitivity, and audio muting, and lamp test.
MKR button press of < 1 second: toggles between high and low receiver sense
MKR button press between 1 and 2 seconds: Activates audio mute, and marker lamp test acti-
vated. The next beacon received will re-activate the audio.
MKR button press > 2 seconds: toggle marker audio on/off. The marker audio can also be se-
lected from the display menu
To adjust the volume level, there is a service adjustment located on the top of the unit.
Use "HI" sensitivity initially. This allows you to hear the 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 two seconds activates marker test lamp, which illuminates all three lamps
simultaneously to assure the lamps (internal and external) are in working order. TST does not act ivate
MM autopilot sense output. Releasing the button returns to the last sensitivity.
3.7 Intercom Operation (6)
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.
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PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 3-2 Rev. 9, Jan. 2011
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 ca bin, 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 smaller, 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 larger, outer volume control knob controls intercom volume or the
passengers. It has no effect on radio or music levels.
Adjust the radios and intercom volume for a comfortable listening level.
Most general aviation headsets today have built-in volume controls;
therefore, volume also can be further adjusted at the individual headset.
3.7.2.1 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 PMA9000EX Stereo installation, one
channel will be shorted. Although no damage to the unit will occur, all passengers will lose one cha nnel,
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.
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PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 3-3 Rev. 9, Jan. 2011
3.7.3 Intercom Modes
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.
This button cycles through the intercom modes, from left to right, then right to left as: ISO, ALL CRW
and CRW, ALL, ISO. An LED behind the text 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 during radio transmissions). Copilot will hear passengers’
intercom and entertainment, while passengers will hear copilot intercom and ente rtainment. Neither will
hear aircraft radio receptions or pilot transmissions.
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 decreases. The
music volume increases gradually back to the original level after communications have been completed.
In the Alternate Intercom Mode, selected from the submenu (section 3.8.1), the passengers will not hear
the aircraft radios. In addition, when the radio audio is active, the passenger microphones will not be
heard by the pilot and copilot, although the passengers will hear themselves and the crew.
CREW: Pilot and copilot are connected on one intercom channel and have exclusive access to the aircraft
radios. They may also listen to Entertainment 1. Passengers can continue to communicate with themselves
without interrupting the Crew and may listen to entertainment as configured.
3.8 EnCoder And Push-Push Switch - ECAPS (8)
ECAPS is a system that consists of an encoding knob and a push-push
switched integral into the knob. By pressing the knob, it activates the
selection and by turning the knob, a function can be accessed. Functions
will always come up on the display with most recently used function first.
By turning the larger knob of the concentric control the various functions
will be displayed. When the desired function is displayed, turning the
smaller knob will turn that function on or off, as desired. . Then the small
knob can be pushed to accept the change, or the change will be accepted
automatically five seconds after the last change. The display returns to the
primary display after the unit a ccepts the change.
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Installation and Operator’s Manual
200-920-0000 Page 3-4 Rev. 9, Jan. 2011
3.8.1 Speaker Amplifier
The speaker (SPR) can be turned on or off in the same manner as the selected secondary navaids. This
control 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.
3.8.2 Alternate Intercom Function Mode
Alternate Intercom Function is a mode that allows everybody to talk on the intercom, but the passengers
do NOT here the aircraft radios. In addition, when the aircraft radios are active, the crew does not hear
the passengers’ microphones, although passengers continue to hear each other.
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Installation and Operator’s Manual
200-920-0000 Page 3-5 Rev. 9, Jan. 2011
3.8.3 Music Source/Distribution
The PMA9000EX user has two music channels, which can use any of three sources. One music channel is
provided to the crew, and can be distributed to the passengers. Another music input is dedicated to the
Passengers stations. The three sources, Music 1, Music 2 and MP3 can be directed via the ECAPS to the
Crew and passenger channels.
NOTE: If the expected music is not heard, check which source has been selected for the crew.
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3.8.4 Music Volume
The smaller data knob serves as the main music volume control for Music 1, and the internal MP3 play
when it is playing files.
In addition, the volume of the music input #2 can be adjusted independently. Hold the push button in for
2 seconds to activate the Music Volume submenu, select the source to change and use the small knob to
change the volume level. NOTE: The MP3 volume is also controllable, and these two will interact, d epending on which music source is using the MP3 player.
All music volume controls are 0-31 steps.
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3.8.5 Music Mute Control
ECAPS controls the music muting allowing the user to tailor the SoftMute® to their taste and situation.
There are two SoftMute muting circuits, one for pilot and copilot, and another independent circuit for the
passengers. The Soft Mute circuit will cut the music almost completely out whenever there is conversation
on the radio or intercom. When that conversation stops, the music returns to the previous level comfortably, over a second or so.
The pilot and copilot SoftMute is controlled from the primary display. Activate the cursor by pressing the
small knob. Rotate the underline cursor under Mute, and press to toggle the SoftMute on and off. The
passenger’s music is controlled by an external switch.
3.8.6 MP3 Controls
The internal MP3 player can be turned on and off and have player functions controlled through the
ECAPS system.
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3.8.7 MP3 Upload
The PMA9000EX has 1 GB of internal storage (512 MB before S/N B01094). Due to the transfer rate
advantages, we recommend that you transfer files from a laptop to the PMA9000EX 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.
The PMA9000EX is not compatible with iTunes formats.
3.8.7.1 Laptop transfer
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 PMA9000EX front panel jack to a PC
USB port.
2. With the PMA9000EX turned off, push and hold the small data knob while powering the
PMA9000EX on. Wait until the audio panel displays "USB drive mode" before releasing.
3. When windows recognizes the PMA9000EX 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 PMA9000EX 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, and back on to return to normal operation.
3.8.7.2 Direct USB Device Transfer
The program inside the unit will recognize and import any compatible audio files (.wav, .mp3, unpr otected .wma) from an external source, through the USB cable.
For best results, the following procedure should be used for a USB flash memory device when used with
the PMA9000EX. The USB drive should be reformatted before being used with the PMA9000EX 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.
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Crew
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 PMA9000EX
6. Transfer your music files into the new music folder.
We recommend having no more than 1G of music files in this folder (512MB before Serial Number
B01094). Because of the Microsoft file protocol, we cannot predict which files will be omitted.
To upload from a USB memory device, select the “Music Transfer” function on the submenu. Follow the
onscreen instructions; connect the memory device to the 2.5 mm to USB cable, and then plug the cable
into the front of the PMA9000EX when prompted.
After the music transfer is complete, the PMA9000EX 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.
Note: For best results, use quality name-brand USB devices.
Different types of files, and music file programs may result in variation in the volume level of the stored
music.
The maximum transfer rate will decrease by about 1% each time the unit is uploaded, therefore frequent
music upload is not advised.
3.9 Utility Jack (9)
The 2.5-millimeter (3/32”) jack on the front of the PMA9000EX has three distinct functions:
Wired Cell phone input
Music input
Advisory audio input
3.9.1 Cellular phone (wired)
When a wired 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 PMA9000EX audio panel will connect
the intercom to the cell phone when the “TELEPHONE
mode is activated, 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..
3.9.2 Music Input
When used as a music input, the front panel jack is treated as Music #1. However, thanks to the
PMA9000EX controls, it can be distributed to all users, regardless of the intercom mode. A patch cord is
available with 2.5 mm to 3.5 mm (3/32 to 1/8”) adapter co rd (PS Part Number 425-006-2535).
There are three music sources available to the PMA9000EX, MP3, Music 1, and Music 2. 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)
If you plug a telephone into the jack, it will function as full duplex phone when the “TELEPHONE” button is pressed
We’ve built some intelligence into the PMA9000EX, too. If you have Music 1 connected to the rear pins,
and there is music playing, the PMA9000EX “knows” that what you put into the front jack must be a pr iority. So the unit will automatically switch the jack to the priority mode.
3.9.3 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
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intercom from muting this input, disable the “Mute” function.
3.9.3.1 Smart Jack Function
When the PMA9000EX has a signal on music #1 input coming in from the rear connector, the front panel
jack automatically becomes a Priority Advisory input, and is heard in the crew headphones.
NOTE
The front jack is no substitute for the certified installation of alerts such as the GPS waypoint or autopilot
tones. These still must be hard wired into the back by your installer.
3.10 Telephone Mode
3.10.1 Bluetooth Telephone Connection
Before the PMA9000EX can be used in TELEPHONE mode with a wireless Bluetooth connection, the
unit must be associated with a specific phone. This must be done after each power cycle of the
PMA89000EX.
Activate the “seek device” function on the cell phone, and then enter the access code “0000” when the
phone detects the “PMA9000EX” on the list of available devices.
This process will be necessary for any phone to be used, and only one cell phone can be associated with
the audio panel at a time. If the additional phones are associated with the PMA9000EX at the same time,
only the first phone will transfer audio to the panel.
3.10.2 Telephone (TEL) Operation
The TEL mode serves as a full duplex interface and distribution for tel ephone systems such as AirCell or
portable cellular phones with earpiece jacks. Select TEL -> ON to activate the telephone mode.
From the main display, select TEL to ON to make an outgoing call.
When the Bluetooth-enabled phone receives an incoming call, the PMA9000EX display will show
“Telephone Ringing” and play a ring tone. Pressing the encoder knob will connect the call, if desired. The
PMA9000EX exits the telephone mode automatically when the cellular phone hangs up.
In TELEPHONE mode, the pilot microphone and headphones are connected to the cell phone. The pilot
PTT will switch the pilot mic to the selected com transceiver, and allow continued aircraft
communications to continue.
The copilot will also be able to transmit on the other selected radio with his PTT as well.
Entering the TEL mode 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 ations, 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 transmit capability on the other selected transceiver.
In ISO intercom mode, when the PMA9000EX 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.
WARNING
Federal Communications Commission regulation 47 CFR 22.925 prohibits the use of 800MHz Cellular
handsets in any aircraft that is airborne. Violation of this rule could result in suspension of service and/or
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a fine.
3.11 Liquid Crystal Display Control
The contrast on the LCD display can be controlled for individual preference. The contrast has 10 steps,
with higher numbers being less contrast.
NOTE: Optimum Contrast is usually at level 3 or 4.
3.12 Secondary Navaid Selection (ADF, DME, AUX)
The Marker Beacon Audio is controlled from either the MKR button, or on the primary display screen.
Press the small knob to display the underline cursor, select MKR with large knob, and press the small
knob to toggle the audio on or off. See Section 3.6 for more detailed information.
The other secondary navigation audio (ADF, DME, and Auxiliary) is controlled through the data knob on
the submenu. Press and hold the small knob for 2 seconds to activate the submenu, rotate the large knob to
find the ADF or DME page. Rotate the small knob to turn the desired source on or off.
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When the ADF or DME are selected, the letter A, or D will appear on the ON line of the display, and can
be turned off from the primary display.
3.13 Public Address Function
The Public Address (PA) can be activated through the ECAPS interface. 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.
The C1 and C2 indicator LEDs will blink to indicate that the pilot is on the PA, and not on the intercom
or radio.
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Section IV – Warranty and Service
4.1 Warranty
In order for the factory warranty to be valid, the installations must be accomplished under the supervision
of an 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 two (2) years from the date of sale. During the first twelve (12) months of the two-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 twelve (12)
months of the two-year warranty period, the shipping costs for the exchange unit will be borne by the
customer.
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 warranty period. PS Engineering, Inc. reserves the rights to make modifications or improvements to the pro duct without obligation to perform like modifications or improvements to previously manufactured pro ducts.
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.
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Appendix A Rev. 9, Jan. 2011
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
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200-920-0000 Rev. 9, Jan. 2011
Appendix B – PMA9000EX 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
Ground Lug
Ground Lug
475-440-0001 (x2)
Back plate assy
475-009-0001
ground lug (x2)
475-440-0001 (x2)
Screw w/washer
Ground lug detail
Rear plate detail (not to scale)
0.37 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
Caut ion: A pply stea d y pr e s sure t o the b ezel wh ile s c r ewi n g t h e unit i n t o th e 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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Installation and Operator’s Manual
200-920-0000 Appendix C Rev. 9, Jan. 2011
Appendix C – J1 Connector Interconnect
Co m 1 Aud io H i
Co m 1 Mic Key
Co m 1 Lo
Communications
Transceiver #1
Communications
Transceiver #2
Na v 1 A ud io Hi
Na v 1 A ud io L o
VHF Nav 1
Na v 2 Au dio H i
Na v 2 Au dio L o
VHF Nav 2
DM E A udi o Hi
DM E A udi o Lo
DME Receiver
Com 2 SPR Load
Un swi tch ed Inpu t #1 Hi
Un swi tch ed Aud io Lo
Unswitched Audio #1
Un swi tch ed Inpu t #2 Hi
Un swi tch ed Aud io Lo
Unswitched Audio #2
Pilo t Mi c Au dio Hi
Pilot Mic PTT
Pilo t Mi c Lo
36
37
38
39
MKR Ant.
1
2
RG-58A/U Coax
9
10
11
12
Co m 1 Mic Audi o H i
Co m 2 Aud io H i
Co m 2 Mic Key
Co m 2 Lo
13
14
15
30
Co m 2 Mic Audi o H i
17
18
19
20
21
22
Co m 2 Spr Load
Co m 2 Spr Load
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 udio Hi
AD F A udio 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 PMA9000.
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. Reserved
10. Unswitched #3 is adjustable
11. Unswitched #2 is selectable over the speaker
Pilot PTT
See Note 4
PMA9000EX Connector, J1 (Sub-D 44-pin, male on tray)
Un swi tch ed Inpu t #3 Hi
Un swi tch ed Aud io Lo
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 Key - No Con ne ct
23
11
24
25
AirCell
Interconnect
Pa ss. Pho nes (R)
Pa ss P ho nes (L)
Pa ss. Pho nes Lo
Pa ss. 1 Ph one sJa ck
Pa ss. 4 Ph one s Ja ck
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 Ph one s Ja ck
Pa ss. 2 Ph one s Ja ck
24
COM Active Output
3/32" Cellular Jack
TEL Mic Input
TEL Audio
TEL Audio Lo
Cellular Plug (typical)
Tip= Microphone out
Ring= Speaker audio
Base=Ground
Cellular Phone
Interconnect
TE L A udio Hi
TE L M ic Au dio Hi
TEL Lo
See Note 7
3
4
5
PMA9000- J1
PMA9000- J1
AU X Au dio Hi
AU X Au dio Lo
AUX Receiver
23
41
40
42
Audio Panel
J1 Connector
PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Appendix F Rev. 9, Jan. 2011
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
PMA9000EX 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
No Connection
No Connection
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 lo
7
6
5
14 V Lights Hi
14-Volt lights lo
AUX Enable
See Note 9
5A Breaker
See Note 3
Note 6
Note 12
Note 13
Backlighting
See Sect. 2.4.2
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