PS Engineering PMA4000 TSO Installation And Operation Manual
Sound Quality. Sound Engineering.
9800 Martel Road
Lenoir City, TN 37772
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PPM
A44000000 TTSS
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Audio Selector Panel
IntelliVox™ Intercom System
Installation and Operation Manual
US Pat. No. 5, 903, 227 6,493,450
Document P/N 200-041-0002
Revision 5, March 2007
Note: Warranty is not valid unless this product is installed by an Authorized PS Engineering or
if a PS Engineering harness is purchased.
PS Engineering, Inc., 9800 Martel Road, Lenoir City, TN 37772. Phone (865) 988-9800.
FAA TSO C50c
Also includes Non-TSO version, P/N 11941
PS Engineering, Inc. ©2007
Copyright Notice
PMA4000 Series Audio Selector Panel and Intercom System
PS Engineering
Installation Manual
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
APPROVAL BASIS – FAA- TSO C50c..................................................................... 1-2
1.4 SPECIFICATIONS.......................................................................................... 1-2
1.5 EQUIPMENT SUPPLIED............................................................................... 1-2
1.6 Optional remote volume control (P/N 250-004-0020) .................................... 1-3
1.7 Optional 2 ¼”mounting plate kit (250-004-0005)........................................... 1-3
1.8 EQUIPMENT REQUIRED BUT NOT SUPPLIED ....................................... 1-3
1.9 LICENSE REQUIREMENTS ......................................................................... 1-3
Section II -Installation ................................................................................................ 2-1
2.1 GENERAL INFORMATION.......................................................................... 2-1
2.1.1 SCOPE ......................................................................................................... 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 Mounting Hole configuration ...................................................................... 2-1
2.3.4 Connector Assembly.................................................................................... 2-2
2.4 Cable Harness Wiring...................................................................................... 2-2
2.4.1 Noise ............................................................................................................ 2-2
2.4.2 Entertainment Input ..................................................................................... 2-3
2.4.3 Radio Push-to-Talk ...................................................................................... 2-3
2.4.4 Power and 28 VDC Dropping Resistor........................................................ 2-4
2.4.5 Backlighting................................................................................................. 2-4
2.4.6 Intercom ....................................................................................................... 2-4
2.4.7 Digital recorder (11941 only) ...................................................................... 2-4
2.5 Adjustments ..................................................................................................... 2-5
2.6 Panel Installation.............................................................................................. 2-5
2.7 Post Installation Checkout ............................................................................... 2-5
2.7.1 Operational Checkout .................................................................................. 2-6
2.8 Final Inspection................................................................................................ 2-6
Section III OPERATION ......................................................................................... 3-1
3.1 SCOPE ............................................................................................................. 3-1
3.2 Audio Selector ................................................................................................. 3-1
3.2.1 Intercom Mode Selector Switch .................................................................. 3-1
3.2.2 Speaker Amplifier........................................................................................ 3-2
3.3 Mic Selector Switch......................................................................................... 3-2
3.3.1 Volume Control ........................................................................................... 3-2
3.3.2 VOX-Squelch Control ................................................................................. 3-2
3.3.3 Intercom Modes ........................................................................................... 3-3
3.3.4 Push to talk intercom mode.......................................................................... 3-4
200-041-0002 Page ii Rev 5, March 2007
PMA4000 Series Audio Selector Panel and Intercom System
PS Engineering
Installation Manual
3.3.5 Internal Recorder System (Part number 11941, only) ................................. 3-4
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- Installation Drawing and Connector Layout....................................... B
Appendix C Unit Connector Wiring ...........................................................................C
Appendix D -Instructions for FAA Form 337 and Continuing Airworthiness .......D
Appendix E RTCA DO160D (EUROCAE ED-14) Environmental Qualification
Form ................................................................................................................................... E
Table of Figures
Figure 1-1 PMA4000 ....................................................................................................... 1-1
Figure 3-1 PMA4000 ....................................................................................................... 3-1
Figure 3-2 Mic Selector ................................................................................................... 3-2
Figure 6-1- Hole Configuration ..........................................................................................A
Figure 6-2 Hole Configuration to avoid rectangular cutouts..............................................A
Figure 6-3 Connector Layout.............................................................................................. B
Figure 6-4 Installation Diagram.......................................................................................... B
Table of Tables
Table 3-1 Mic Muff ™ Part Numbers ............................................................................. 3-3
Table 3-1 Intercom Modes............................................................................................... 3-4
Revision History
Rev. By Date Description of Change
3 Picou January 2006 Updated section 2.4.4 for power
wires, allow smaller gage.
4 Picou March2006 Added information for 11941
5 Picou March2007 Clarified mounting dimensions
200-041-0002 Page iii Rev 5, March 2007
PMA4000 Series Audio Selector Panel and Intercom System
PS Engineering
Installation Manual
Section I GENERAL INFORMATION
1.1 INTRODUCTION
The PMA4000 TSO Audio Selector Panel is a right-sized solution for the audio switching needs of light aircraft. By combining basic audio selector panel, with PS Engineering’s revolutionary IntelliVox® intercom, the aircraft owner can have audio panel functionality without an investment in panel space.
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.
1.2 SCOPE
This manual provides detailed installation and operation instructions for the PS Engineering PMA4000 TSO Audio Selector Panel/Intercom Systems. This includes the following
unit:
Model Description Part Number
PMA4000 TSO Audio Selector Panel 11942
PMA4000-NON TSO Audio Selector Panel w/IRS 11941
1.3 EQUIPMENT DESCRIPTION
The PMA4000-series is a state of the art audio isolation amplifier and audio selector that contains an automatic voice activated (VOX) intercom system. It can switch two transceivers (Com 1, Com 2) and two receivers (Nav 1, Nav 2) In addition, there are four unswitched inputs, for additional audio requirements.
Push buttons select the receiver audio source provided to the headphones. A SPR push-on switch on the
volume control 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. A toggle switch selects one of the two transceivers for the pilot and copilot positions in transmit.
A fail-safe mode connects the pilot headphone and microphone to COM 1 if power is removed for any
reason, or if the Com Selector switch is in the “Off” position.
A 4-station voice activated (IntelliVox™) intercom is included in the PMA4000. Pilot isolate and ALL
modes, a mono music input with "Soft Mute." A dual concentric knob pair controls pilot volume and copilot/passenger intercom volume.
200-041-0002 Page 1-1 Rev 5, March 2007
Figure 1-1 PMA4000
PMA4000 Series Audio Selector Panel and Intercom System
PS Engineering
Installation Manual
APPROVAL BASIS – FAA- TSO C50c
The PMA4000 p/n 11942, Audio Selector Panels are FAA approved under TSO C50c (Audio Amplifiers).
All systems comply with relevant portions of EUROCAE ED-14C/DO-160D (Environmental Conditions and Test Procedures for Airborne Equipment), ED12B/DO-178B (Software Considerations for
Airborne Equipment) and ED- 18/DO-214 (Audio Systems Characteristics and Minimum Operational
Performance Standards for Aircraft Audio Systems).
Operation is subject to the following conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may cause undesired
operation.
The part number 11941 unit is NOT FAA Approved.
1.4 SPECIFICATIONS
ENVIRONMENTAL Qualifications: B1CABSRXXXXXXABBBBTMXXE2XXX
Temperature Range:
Operating:
Storage
Altitude: Up to 25,000 feet in an unpressurized area of the cock-
Audio Selector/Intercom: C50c, Class A
APPLICABLE DOCUMENTS: RTCA/DO-214, RTCA/DO-160D
DIMENSIONS: Height: 1.35 in. (3.4 cm) Width: 2.40 in. (6.1 cm)
WEIGHT (With Connectors): 12.4 oz. (0.35 kg)
Voltage: 11 to 33 VDC (28 Volt w/dropping resistor)
Maximum Current: 0.25 Amp (Externally protected by a 3 Amp circuit
Typical operating current:
Speaker off:
Speaker on, 28V, full radio volume
Audio Selector Specifications
Audio selector panel input impedance:
Input Isolation: -60 dB (min.)
Speaker Muting: -60 dB (min.)
Speaker Output (into 4 Ω) with no clipping
14 VDC:
28 VDC:
Receiver Inputs: 4 (Com 1, Com 2, Nav 1, Nav 2)
Unswitched Inputs: 4 (examples: ADF, DME. GPS WPT, Marker, Autopi-
Transmitter Selections: 2 (Com 1, Com 2)
Speaker Impedance:
Headphone Impedance:
Headphone Output:
Microphone Impedance:
Intercom Specifications
Intercom Positions: 4 places (with individual IntelliVox® circuits)
Music Input: 1 (Monaural)
Music Muting: >-30 dB "Soft Mute"
Distortion:
Mic Freq. Response,±3 dB: 300 Hz - 6000 Hz
Music Freq. Response,± 3 dB: 100 Hz - 18kHz
-20ºC to +55ºC
-40ºC to +85ºC
pit.
Depth: 6.50 in. (16.5 cm) behind panel
breaker.)
100 mA
250 mA
510 Ω
2 Watts (min.)
8 Watts (min.)
lot Disconnect, Altimeter DH)
4 Ω
150 – 1000 Ω
30 mW each headset, with < 10% THD into 150Ω
150 - 600 Ω
<1% THD @ 30 mW into 150Ω
1.5 EQUIPMENT SUPPLIED
A. 1 ea. of the following units:
200-041-0002 Page 1-2 Rev 5, March 2007
PMA4000 Series Audio Selector Panel and Intercom System
PMA4000 TSO 11942
PMA4000 w/IRS 11941
PS Engineering
Installation Manual
Unit Part Number
B. PMA4000 Installation Kit: 250-0041-0001
Part Number Description Quan
575-004-0005 Faceplate (Square) 1
475-632-0006 Mounting Screws6-32X3/8”Phil-Pan Black 2
625-002-0001 Knob, outer 1
625-002-0004
625-010-0002
425-025-0009 Connector Shell Male 1
425-025-0010 Connector Shell Female 1
425-020-5089 Crimp Pin, male 25
425-020-5090 Crimp Socket, female 25
701-015-1501
475-002-0002 Connector Thumbscrews 4
625-025-0001 Connector Hood 2
430-400-0028 Mounting Shim– 0.028 in 1
430-400-0050 Mounting Shim –0.050 in. 1
200-041-0002 Operator's and Installation Manual 1
Knob, inner
Knob insert pointer
Dropping Resistor, 15 Ω, 15 Watt, (required in 28
VDC installation)
1
1
1
1.6 Optional remote volume control (P/N 250-004-0020)
This kit contains:
1 ea. 10KΩ Potentiometer P/N 675-020-0103
1 ea. knob, Black 1/4" Shaft w/Set Screw P/N 625-020-0005
1.7 Optional 2 ¼”mounting plate kit (250-004-0005)
This kit contains:
1 ea. 2 ¼” Mounting plate for instrument hole mounting, P/N 575-004-0001
1 ea. Mounting Shim, 430-400-0090
1.8 EQUIPMENT REQUIRED BUT NOT SUPPLIED
A. Speaker, 4 Ω
B. Headphones, 150 Ω mono, up to 4 as required
C. Microphones, up to 4 as required
D. Interconnect Wiring
E. Contact Crimping Tool, AMP 601966-1 (or MS22520 equiv.), with Positioning Tool
601966-5
F. Headphone Jacks (As Required)
G. Microphone Jacks (As Required)
H. Circuit Breaker: 1 ea. 3 amp.
1.9 LICENSE REQUIREMENTS
None
200-041-0002 Page 1-3 Rev 5, March 2007
PMA4000 Series Audio Selector Panel and Intercom System
PS Engineering
Installation Manual
Section II -Installation
2.1 GENERAL INFORMATION
2.1.1 SCOPE
This section provides detailed installation and interconnect instructions for the PS Engineering PMA4000-TSO Series Audio Selector Panel/Intercom System, and PMA4000
w/IRS.
Please read this manual carefully before beginning any installation to prevent damage
and post installation problems. Installation of this equipment requires special tools and
knowledge. The equipment must be installed by an appropriately rated Certified Aircraft
Repair Station, in accordance with applicable regulations.
2.2 Unpacking and Preliminary Inspection
Use care when unpacking the equipment. Inspect the units and parts supplied for visible
signs of shipping damage. Examine the unit for loose or broken buttons, bent knobs, etc.
Verify the correct quantity of components supplied with the list in Section 1.6 (B). If any
claim is to be made, save the shipping material and contact the freight carrier. Do NOT
return units damaged in shipping to PS Engineering. If the unit or accessories shows 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 PMA4000 is not required. However the unit 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 PMA4000 must be rigidly mounted to the instrument panel of the aircraft structure
and within view and reach of the pilot position(s). Installation must comply with FAA
Advisory Circular AC 43.13-2A. The unit may be mounted in any area where adequate
clearance for the unit and associated wiring bundle exist.
2.3.3 Mounting Hole configuration
For instrument panel mounting, make openings in the panel according to the templates
and drawing supplied. Depending on the instrument panel thickness, you may elect to use
the shim supplied for the best button depth and mechanical contact. See Appendix B for
mounting hole layout.
200-041-0002 Page 2-1 Rev 5, March 2007
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