9800 Martel Road
Lenoir City, TN 37772
www.ps-engineering.com
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Document P/N 200-760-0000
Revision 12, January 2014
Audio Selector Panel with VHF Communications Transceiver and
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. 2014 ©
Copyright Notice
Any reproduction or retransmittal of this publication, or any portion thereof, without the expressed written permission of PS Engineering, Inc. is strictly prohibited. For further information contact the Publications Manager at PS Engineering, Inc., 9800 Martel
Road, Lenoir City, TN 37772. Phone (865) 988-9800, email contact@ps-engineering.com.
For use in Experimental/LSA/Non-certified aircraft ONLY
Not intended for installation in aircraft with standard airworthiness certification
The product warranty is not valid unless this product is installed by an
Authorized PS Eng
i
neering 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.................................................................. 1-3
1.8 LICENSE REQUIREMENTS ................................................................................................... 1-4
Section II - INSTALLATION ........................................2-1
2.1 GENERAL INFORMATION.................................................................................................... 2-1
2.1.1 SCOPE........................................................................................................................ 2-1
2.1.2 CERTIFICATION REQUIREMENTS................................................................................... 2-1
2.2 UNPACKING AND PRELIMINARY INSPECTION............................................................................... 2-1
2.3 EQUIPMENT INSTALLATION PROCEDURES ................................................................................... 2-1
2.3.1 COOLING REQUIREMENTS............................................................................................ 2-1
2.3.2 MOUNTING REQUIREMENTS......................................................................................... 2-1
2.3.3 MICRO AIR M760REM MOUNTING REQUIREMENTS ..................................................... 2-1
2.3.4 AUDIO PANEL MOUNTING RACK INSTALLATION........................................................... 2-2
2.4 CABLE HARNESS WIRING ............................................................................................................ 2-2
2.4.1 NOISE.......................................................................................................................... 2-2
2.4.2 AUDIO PANEL TRAY AND CONNECTOR ASSEMBLY....................................................... 2-3
2.4.3 INPUT POWER (+12VDC)................................................................................... 2-3
2.4.4 COMMUNICATIONS PUSH-TO-TALK.............................................................................. 2-4
2.4.5 AUDIO PANEL INTERFACE ............................................................................................ 2-4
2.5 M760REM VHF COM INTERFACE ............................................................................................ 2-4
2.5.1 M760REM CONNECTOR.............................................................................................. 2-4
2.5.2 INTERFACING THE M760REM AS SINGLE, COM 1 OR COM 2...................................... 2-4
2.5.3 R760REM ANTENNA CONNECTION.............................................................................. 2-5
2.6 TELEPHONE (DUPLEX) FUNCTION FOR BLUETOOTH ® CAPABLE CELL PHONES...................... 2-6
2.6.1 PARING SEPARATE MUSIC AND TELEPHONE DEVICES .................................................... 2-7
2.6.2 TELEPHONE SIDETONE ................................................................................................. 2-7
2.6.3 "SWAP" MODE............................................................................................................. 2-7
2.6.4 BACKLIGHTING............................................................................................................ 2-7
2.6.5 UNSWITCHED INPUTS ................................................................................................... 2-8
2.7 INTERCOM WIRING ...................................................................................................................... 2-8
2.7.1 ENTERTAINMENT INPUTS............................................................................................. 2-9
2.7.2 ENTERTAINMENT MUTING............................................................................................ 2-9
2.8 DISASSEMBLY.............................................................................................................................. 2-9
2.9 CONVERSION TO 12V ELECTRICAL SYSTEM. .............................................................................. 2-10
2.10 ADJUSTMENTS ......................................................................................................................... 2-12
2.11 MICROPHONE GAIN REDUCTION .............................................................................................. 2-13
2.12 REASSEMBLY........................................................................................................................... 2-15
2.13 COMMUNICATIONS ANTENNA INSTALLATION NOTES .............................................................. 2-16
2.13.1 METAL SKIN AIRCRAFT............................................................................................ 2-16
2.13.2 NON-METAL SKIN AIRFRAMES......................................................................... 2-16
2.13.3 ANTENNA LOCATION ............................................................................................... 2-17
2.14 M760REM ADJUSTMENTS ...................................................................................................... 2-17
2.14.1 INSTALLATION OF FERRITE CORE SUPPRESSOR. ....................................................... 2-18
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page ii Rev. 12, Jan. 2014
2.15 PAR100EX PIN ASSIGNMENTS ................................................................................................ 2-19
2.16 POST INSTALLATION CHECKOUT............................................................................................. 2-20
2.17 UNIT INSTALLATION................................................................................................................ 2-20
2.18 OPERATIONAL CHECKOUT ...................................................................................................... 2-20
2.18.1 M760REM CHECKOUT............................................................................................ 2-21
2.18.2 TELEPHONE CHECKOUT ....................................................................................... 2-21
2.19 FINAL INSPECTION................................................................................................................... 2-21
Section III OPERATION............................................ 3-1
3.1 SCOPE ....................................................................................................................................... 3-1
3.2 POWER AND FAIL SAFE (1)........................................................................................................... 3-1
3.2.1 ICS AND MUSIC VOLUME CONTROLS (1) ..................................................................... 3-1
3.2.2 M760REM RADIO POWER (AS COM 1)........................................................................ 3-1
3.3 COMMUNICATIONS TRANSMIT (XMT) SELECTION (2) ................................................................ 3-2
3.4 COM AUDIO SELECTOR (3) ........................................................................................................ 3-2
3.5 NAVAID AUDIO SELECTION (4)..................................................................................................... 3-2
3.6 VHF TRANSCEIVER CONTROL (5)................................................................................................ 3-3
3.6.1 FREQUENCY SELECTION (6)......................................................................................... 3-3
3.6.2 RADIO VOLUME AND RADIO SQUELCH (7).................................................................... 3-3
3.6.3 MONITOR MODE (COM 1 OR STAND ALONE ONLY) ...................................................... 3-3
3.7 INTERCOM OPERATION (8) .......................................................................................................... 3-4
3.7.1 INTELLIVOX® VOX-SQUELCH...................................................................................... 3-4
3.7.2 MONO HEADSETS IN STEREO INSTALLATION ................................................................ 3-5
3.7.3 INTERCOM MODES (8) ................................................................................................. 3-5
3.8 TELEPHONE MODE...................................................................................................................... 3-5
3.8.1 BLUETOOTH TELEPHONE CONNECTION........................................................................ 3-5
3.8.2 TELEPHONE (TEL) OPERATION.................................................................................... 3-6
3.9 ENTERTAINMENT INPUTS ............................................................................................................ 3-6
3.10 MUSIC MUTING (9).................................................................................................................... 3-7
3.10.1 MUSIC 2 MUTE CONTROL .......................................................................................... 3-7
3.10.2 LIQUID CRYSTAL DISPLAY CONTROL......................................................................... 3-7
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 – PAR100EX Installation Drawings ........................................................ B
Appendix C – J1 Connector Interconnect ................................................................. C
Appendix D – J2 Connector Interconnect ................................................................. D
Rev Date Change
1 3/28/2011 Initial release
2 May 2011 First production release
3 June 2011 Clarified radio operating voltage
4 July 2011 Added RFI filter information
5 August 2011 Changed as shipped voltage from 12 to 28V and added conversion instructions
6 January 2012 Corrected typos §2.9 & Appendix C
7 June 2012 Updated requirement for ferrite core RFI suppression §2.14.1
8 October 2012 Corrected §2.6.1, Cell Phone Sidetone
9 December 2012 Clarified Music 1 & Music 2, Muting, and Bluetooth operation.
10 December 2012 Corrections and clean-up
11 February 2013 Revised §2.10 for new cover with adjustment locations
12 January 2014 Revised § 2.5.2 for clarity
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 1-1 Rev. 12, Jan. 2014
Section I – GENERAL INFORMATION
1.1 INTRODUCTION
The PAR100EX represents another evolutionary step in cockpit audio control and intercommunications
utility. Using our patented IntelliVox® design and pilot programmable configurations, this marks the next
level of audio control. The unit is designed for outstanding ergonomics and visually defined mode annunciation and selection.
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 PAR100EX.
1.2 SCOPE
This manual provides detailed installation and operation instructions for the PS Engineering PAR100EXseries of Audio Selector Panel/Intercom Systems. This includes the following unit:
Model Description PS Engineering
Part Number
PAR100EX Stereo Audio Selector Panel with control for VHF Commu-
nications radio. Includes stereo intercom, with Bluetooth
Interface
050-760-0100
M760REM VHF Communications Transceiver 050-760-6476
1.3 EQUIPMENT DESCRIPTION
The PAR100EX is a state-of-the-art audio isolation amplifier and audio selector that contains an automatic voice activated (VOX) intercom system and serial data control/indication for a MiroAir VHF communications receiver. It can switch two transceivers (Com 1, Com 2) and two receivers (Nav 1, Nav 2).
A Bluetooth ® TELEPHONE mode allows the PAR100EX to act as an audio interface between aircraft
headphone and microphones and Bluetooth enabled cellular telephone equipment. .
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 PAR100EX must be interfaced with an approved system.
There are four unswitched inputs, available for traffic or EGPWS, autopilot disconnect tones, and/or radar
altimeter warning.
Pushbutton switches select one of the communication transceivers for the pilot and copilot position, and
allows radio transmission. In "Split Mode" the PAR100EX 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 (Failsafe) position. Unswitched input #1 is also provided to the pilot headphone in fail-safe
A four-station voice activated (VOX) intercom is included in the PAR100EX. 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.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 1-2 Rev. 12, Jan. 2014
1.4 APPROVAL BASIS — NONE
The PAR100EX is not intended, or approved for installation on US Registered Civilian Aircraft with
normal airworthiness certificates.
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
PAR100EX Unit
Rack with connectors
1.34 lb. (0.61 kg)
0.51 lb. (0.24 kg)
AUDIO PANEL POWER REQUIREMENTS (Including Internal Lighting):
Voltage:
12 VDC *The audio panel and Microair
M760REM operate from +12VDC Only If installed in 28V Aircraft, damage will result.
Contact PS Engineering if you wish to install
in 24V system.
Maximum Current: 2.5 Amp (Externally protected by a 3A pull-type
breaker)
Audio Selector Specifications
Audio selector panel input impedance:
510
Input Isolation: -60 dB (min.)
Receiver Inputs: 4 (Com 1, Com 2, Aux 1, Aux 2)
Unswitched Inputs: 4
Transmitter Selections: 3 (Com 1, Com 2,
Com1/2)
Headphone Impedance:
150 – 1000
Headphone Output: 38 mW each headset, no clipping <1% THD typi-
cal into 150
Microphone Impedance:
150 - 600
Intercom Specifications
Intercom Positions: 4 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
M760REM VHF Transceiver Specifications
Radio Type
Amplitude Modulation (AM) Aircraft Transceiver
Channels (Transmit & receive)
760 channels, 25KHz spacing
118.000 – 136.975MHz
Frequency Selection
On PAR100EX Audio Panel
Frequency Display
Alpha/numeric LCD display (with backlighting) on
PAR100EX
Frequency control
PLL frequency synthesis, which is microprocessor
controlled Memory is store in non-volatile EPROM
Power consumption Receive (no signal)
Transmit
140 mA (no backlighting)
1.9 A
Input Voltage
Provided by PAR100EX from a second 3A Circuit
Breaker.
Power output
5 watts (nominal) VSWR Tolerance < 2:1 for best
operation (5:1 without damage)
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 1-3 Rev. 12, Jan. 2014
Receiver sensitivity
-12dB SINAD @ 0.3µV (1KHz audio with 70%
modulation)
Receiver Selectivity
-70dB
Squelch Range
0.5 - 10.0µV
Data Interface
RS232
Speaker volume output
Nominal 4 watts output to 4 ohms
Headset volume output
Nominal 100 milliwatts output to 600 Ω
Temperature range
-20 to +55 degrees Celsius
Stability
< +/- 4.00 ppm
Dimensions
W-3.4” x H-2.5” x D-4.7” (plus 1.5” for harness)
W-87mm xH-64mm x D-119mm (plus 35mm for
harness)
Weight
13.0 ounces
338 grams
FCC ID:
QNEM760REM
1.6 EQUIPMENT SUPPLIED
1 ea. of the following items:
Model Description Part Number
PAR100EX PAR100EX Audio Panel with intercom and radio function control 050-760-0100
M760REM VHF Communications Transceiver 050-760-6476
Installation Kit: 250-890-0000, containing:
Description Quantity Part Number
PAR100EX installation rack assembly 1 430-890-0040
PAR100EX Rack back plate 1 430-890-0050
44-pin connector kit 2 120-891-2045-
Backshell, connector 2 625-025-2465
Backshell Retainer 2 431-891-0100
4 40 X 7/16 screw w/nylon patch 4 475-440-0007
4 40 X 3/8 screw w/lock washer 4 475-440-1038
4 40 X 1/8 screw w/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
Installation Kit 250-760-6476, Containing:
Description Quantity Part Number
DB 15 Connector , Solder type 1 425-016-0001
DB 15 Connector back shell 1 425-015-0003
Ferrite RFI suppressor 1 507-000-0065
1.7 EQUIPMENT REQUIRED BUT NOT SUPPLIED
a. Circuit Breaker: 1 ea; 3 amp PULL TYPE REQUIRED for PAR100EX
b. Circuit Breaker: 1 ea; 3 amp PULL TYPE REQUIRED for transceiver power (to PAR100EX)
c. Headphone Jacks (up to 4 Stereo, as Required)
d. Microphone Jacks (up to 4 as Required)
e. Headphones, 150 (Stereo), up to 4 as required
f. Microphones, up to 4 as required
g. VHF Communication antenna 118-137 MHz, VSWR <2:1 (FAA-TSO approved is recommended)
h. BNC Connector for M760REM, Amphenol 31-2 or equivalent (PS PN 425-262-0312)
i. Mounting hardware for M760REM, as appropriate
j. Interconnect Wiring, coaxial cable
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 1-4 Rev. 12, Jan. 2014
1.8 LICENSE REQUIREMENTS
In some localities other than the United States, an Aircraft Radio Station license may be required. In the
United States, you do not need a license to operate a two-way VHF radio aboard aircraft operating domestically. Aircraft operating domestically do not land in a foreign country or communicate via radio with
foreign ground stations. Flying in international or foreign airspace is permitted, so long as the previous
conditions are met. If you travel to a foreign destination, however, (e.g., Canada, Mexico, Bahamas, British Virgin Islands) a license is required. Visit http://wireless.fcc.gov for more information.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-1 Rev. 12, Jan. 2014
Section II - INSTALLATION
2.1 GENERAL INFORMATION
2.1.1 SCOPE
This section provides detailed installation and interconnection instructions for the PS Engineering
PAR100EX Audio Selector Panel/Intercom/ with VHF communication radio controls.
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 PAR100EX is not approved for installation in aircraft with a standard airworthiness certificate.
The M760REM is not intended for use where a FAA-Approved VHF Communications transceiver is required by operating rule.
2.2 Unpacking and Preliminary Inspection
Use care when unpacking the equipment. Inspect the units and parts supplied for visible signs of shipping
damage. Examine the unit for loose or broken buttons, bent knobs, etc. Verify the correct quantity of
components supplied with the list in Section 1.6 (B). If any claim is to be made, save the shipping material and contact the freight carrier. Do NOT return units damaged in shipping to PS Engineering. If the
unit or accessories show any sign of external shipping damage, contact PS Engineering to arrange for a
replacement. Under no circumstances attempt to install a damaged unit in an aircraft. Equipment returned
to PS Engineering for any other reason should be shipped in the original PS Engineering packaging, or
other UPS approved packaging.
2.3 Equipment Installation Procedures
2.3.1 Cooling Requirements
Forced air-cooling of the PAR100EX 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 PAR100EX 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 Micro Air M760REM mounting requirements
The M760REM remote VHF Communications radio is mounted to the aircraft structure with 4 ea #6-32
(not supplied) screws through the mounting flange. Guidance can be found in AC 43.13-2B, Chapter 2.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-2 Rev. 12, Jan. 2014
Figure 2-1 M760REM VHF Transceiver (Remote Mount)
2.3.4 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.
2.4 Cable Harness Wiring
Referring to the appropriate Appendix, assemble a wiring harness as required for the installation. All
wires must be MIL-SPEC in accordance with current regulations. Two- and three-conductor shielded wire
must be used where indicated, and be MIL-C-27500 or equivalent specification. Proper stripping, shielding and soldering technique must be used at all times. It is imperative that correct wire be used.
Refer to FAA Advisory Circular 43.13-2B for more information. Failure to use correct techniques may
result in improper operation, electrical noise or unit failure. Damage caused by improper installation will
void the PS Engineering warranty.
2.4.1 Noise
Due to the variety and the high power of radio equipment often found in today's general aviation aircraft,
there is a potential for both radiated and conducted noise interference.
The PAR100EX power supply is specifically designed to reduce conducted electrical noise on the aircraft
power bus by at least 50dB. Although this is a large amount of attenuation, it may not eliminate all noise,
particularly if the amplitude of noise is very high. There must be at least 13.8 VDC present at the connector, J2 pins 8 & 9, of the PAR100EX for the power supply to work in its designed regulation. Otherwise, it
cannot adequately attenuate power line noise. Shielding can reduce or prevent radiated noise (i.e., beacon,
electric gyros, switching power supplies, etc.) However, installation combinations can occur where interference is possible. The PAR100EX was designed in a RFI hardened chassis and has internal Electromagnetic Interference (EMI) filters on all inputs and outputs.
Ground loop noise occurs when there are two or more ground paths for the same signal (i.e., airframe and
ground return wire). Large cyclic loads such as strobes, inverters, etc., can inject noise signals onto the
airframe that are detected by the audio system. Follow the wiring diagram very carefully to help ensure a
minimum of ground loop potential. Use only Mil Spec shielded wires (MIL-C-275000, or better). Under
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-3 Rev. 12, Jan. 2014
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 center
of the back plate.
Radiated signals can be a factor when low level microphone signals are "bundled" with current carrying
power wires. Keep these cables physically separated. It is very important that you use insulated washers to
isolate the ground return path from the airframe to all headphone and microphone jacks.
2.4.1.1 Music Inputs and Noise
PAR100EX units utilize differential music inputs 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
PAR100EX. The power for IFE and audio panel should be a common bus.
If a music jack is installed for Music 1 or 2, we strongly recommend isolating the jack from airframe
ground, by using an insulated mounting plate.
NOTE
Adding a high-performance audio control system, particularly in conjunction with high-performance active noise canceling headsets, cannot improve on older avionics that were designed for cabin-speaker use.
PS Engineering makes no claim that the audio panel will provide a noise-free audio quality under all installation conditions, particularly with older avionics.
2.4.2 Audio Panel Tray and Connector Assembly
The rack connectors mate with two 44-pin connectors in the PAR100EX. The connectors are a subminiature crimp-type, and require the use a hand crimp tool, from table below (or equiv.). The connectors
are mounted to the tray back plate with #4-40 screws (475-440-1038), from the inside of the tray and the
mounting block, 431-891-0100. Ensure that proper strain relief and chafing precautions are made during
wiring and installation, using the cable clamp (625-001-0002).
Manufacturer Crimping Tool Positioner Extraction tool
AMP 601966-1 601966-6 91067-1
Daniels AFM8 K42 M24308-1
ITT-Cannon 995-0001-584 995-0001-739 91067-1
Table 2-1 PAR100EX Connector Pin crimping tools
2.4.3 Input Power (+12VDC)
As shipped from PS Engineering, the PAR100EX is compatible with 28 Volt DC systems.
If 12-volt system operation is desired, see section 2.9.
NOTE:
If the PAR100EX/M760REM is installed in 28V aircraft without properly configuring the unit,
the M760REM will be damaged. See §2.9.
A three (3) 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.
The PAR100EX internal regulator supplies DC power to the M760REM VHF transceiver (12 VDC), and
has a dedicated three (3) amp circuit breaker from aircraft bus input into J2, Pin 44 for this supply.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-4 Rev. 12, Jan. 2014
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
PAR100EX 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 PAR100EX 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.
Inputs A1 and A2 can be used to control navigation receiver audio, J1 Pins 17 WRT 18 and J1 19 WRT
20, respectively.
Some avionics do not provide a separate audio low, and may introduce additional electrical noise into the
system. For best results, connect the audio low from the audio panel to the radio ground, using one conductor of the twisted-shielded cable.
2.5 M760REM VHF COM Interface
2.5.1 M760REM Connector
The M760REM has a 15-pin solder type connector.
1 Mic Audio Hi
2 RS232 TX (data out)
3 No Connect
4 No Connect
5 RS232RX (data in)
6 No Connect
7 PTT
8 No Connect
9 Radio Power
10 No Connect
11 Aircraft Ground
12 No Connect
13 No Connect
14 COM audio Output Hi
15 No Connect
2.5.2 Interfacing the M760REM as Single, COM 1 or COM 2
The PAR100EX/ Microair M760REM can be configured to be a stand-alone COM, or as COM 1 or COM
2 in a multiple radio installation.
PS Engineering recommends that the PAR100EX/M760REM be used as COM 2. In the event of a failure,
the PAR100EX will be in fail-safe, and COM 1 can be used.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-5 Rev. 12, Jan. 2014
If the M760REM is used as COM 1, the PAR100EX can fail-safe to it, because it is divided internally as
audio panel and COM control. In addition, the M760REM power supply is provided by an independent
circuit breaker and power supply in the PAR100EX. See § 3.2 for operational information.
As shipped from the factory, the PAR100EX is configured to use the M760REM as COM 2. The
PAR100EX must be reconfigured at installation to be used as COM 2, by removing the top cover, and
placing the DIP switches as shown.
COM 1 OFF
J4 Switch 6
COM 2 ON
Table 2-2 Radio Selection
Figure 2-2 DIP Switch Locations Figure 2-3 Switch J4, SW 6 location
Refer to § 2.8 for disassembly instructions.
When properly selected, the PAR100EX LCD display will read either COM 1, or COM 2.
2.5.3 R760REM Antenna connection
The VHF Com radio uses a solder/crimp BNC connector, Amphenol 31-2. Assemble the RF connector as
shown:
SW 6
J4 Location
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-6 Rev. 12, Jan. 2014
Step 1 Place nut, washer and gasket over cable and strip jacket to 5/16” (7.9 mm).
3/32”
Step 2 Comb out braid and fold out. Trim insulation off center conductor to 3/32” (2.4 mm). Tin center
conductor.
Step 3 Pull braid wires forward and taper toward center conductor. Place clamp over braid and push back
against cable jacket.
Step 4 Fold back braid wires as shown, trim to proper length [approximately .1/8” (3.2mm) long] and
form over clamp as shown. Braid wire should not extend beyond step of braid clamp. Solder contact to
center conductor, sliding the bushing first (when supplied) over center conductor.
Step 5 Insert cable and parts into connector body. Make sure sharp edge of clamp seats properly in gasket. Tighten nut to approximately 15 inch pounds.
2.6 TELEPHONE (Duplex) Function for Bluetooth ® capable Cell Phones
The TELEPHONE mode in the PAR100EX is also compatible with cellular telephones with Bluetooth®.
hands-free headset interface. There is no wiring required, all functions are handled in the Bluetooth telephone.
The PAR100EX Bluetooth® interface is always “discoverable”, so you just need to search for the
PAR100EX from your Bluetooth-equipped phone or music source. The default access code is 0000, if
needed. Once the PAR100EX has been “paired” with your Bluetooth device.
The telephone is distribution as dictated by the ISO, ALL, CREW.
ISO mode - only the Pilot is on the telephone.
CREW mode - only the Pilot and Copilot are on the telephone.
ALL mode - everyone is on the telephone.
You can answer a call when you hear the “telephone ringing” in your headset. To answer the phone call
will require you to have access to your phone and selecting the answer function of that telephone. There is
no front panel button that will allow you to answer the phone.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-7 Rev. 12, Jan. 2014
2.6.1 Paring separate music and telephone devices
It is possible to use a different music source (iPad, iPod with Bluetooth adapter, Bluetooth enabled laptop,
etc) and telephone. However, the music source must be paired first, before the telephone, if the telephone
also has music streaming capability. Otherwise, the Smartphone will also take over the music streaming.
Only one can be a phone. If the telephone can provide both telephone and streaming music, when the
phone is connected, it will automatically disconnect the music device. If it is possible to turn off the music
streaming function on the telephone, then both the telephone and a separate Bluetooth® enabled music
device can be use at the same time.
If Bluetooth connections become unreliable or do not connect, you may need to reset the PAR100EX.
Turn the unit off, and hold the A1 & A2 buttons while turning the unit the unit back on. You should hear
a chime to indicate a successful Bluetooth reset.
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 flight, and takes
no responsibility for the user’s action. PS Engineering does not guarantee compatibility with personal
cellular telephones. For a list of phones that have been tested, visit www.ps-engineering.com.
2.6.2 Telephone sidetone
The PAR1000EX will provide cell phone sidetone (your side of the telephone conversation) in the factory
configuration. Some telephones do provide sidetone the PAR100EX can be configured to remove this sidetone by placing the DIP switch in the proper configuration. See Figure 2-2 for locations.
Cell phone sidetone created by
audio panel
OFF J5 Switch 6
No cell phone sidetone ON
Table 2-3 Telephone sidetone switch
2.6.3 "Swap" Mode
When a momentary, normally open, push-button switch is connected between pin 20 on the J2 connector
and aircraft ground, the user can switch between Com 1 and 2 by depressing this switch without having to
turn the mic selector switch. This yoke-mounted switch eliminates the need to remove your hands from
the yoke to change transceivers.
2.6.4 Backlighting
The PAR100EX has an automatic dimming of the pushbutton annunciation LEDs controlled by a photocell. Control of the unit backlighting is through the aircraft avionics dimmer. For 12-Volt aircraft, connect
J2 Pins 6 and 7 to the aircraft dimmer bus, and pin 5 to ground.
As shipped from PS Engineering, the PAR100EX is ONLY compatible with 12 Volt DC systems. Contact
PS Engineering at 1.865.988.9800 or contact@ps-engineering.com if 24V operation is desired. For 24-
volt backlighting systems, connect pin 7 to the aircraft dimmer, and pins 5 and 6 to ground.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-8 Rev. 12, Jan. 2014
NOTE:
If the PAR100EX/M760REM is installed in 28V aircraft without properly configuring the unit,
the M760REM radio will be damaged. See § 2.9
The LCD display backlighting is controlled by the automatic photocell dimming. In addition, the text inverts for nighttime mode when the ambient light is low.
If an external dimmer control is not used, a constant back light illumination can be established for nighttime viewing. Pin 6 or 7 (depending on system voltage) must be tied to power (J2, pin 8 or 9) for the back
lighting system to work. The photocell mounted in the unit face will automatically adjust the intensity of
the push-button annunciation LEDs.
2.6.5 Unswitched inputs
J1, pins 31, 29 and J2 pin 15 are unswitched, unmuted (by transmitter keying), inputs # 1, 3 and 4, respectively. These inputs are presented to the pilot and copilot regardless of the audio configuration, and
will mute the entertainment inputs based on the mode. 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 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.
Unswitched
Input
Hear in
Fail Safe
Hear in
Crew Headset
Gain
1 Yes Yes 1:1(fixed)
2 No Yes 1:1(fixed)
3 No Yes Adjustable
4 No Yes 1:1(fixed)
Table 2-4 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 entertainment inputs. These 510Ω inputs can be used for altimeter DH audio, GPS waypoint audio, autopilot
disconnect tones, or any other critical audio signal.
The audio low for unswitched #4 (J2, pin 15) should be connected to a convenient audio low. However,
this should NOT be connected to Music Low.
Unswitched #1 is presented to the pilot headphone in fail-safe (off) mode.
NOTE
Inputs 1, 2 and 4 are fixed (1:1), and any audio level adjustments must be made at the input source. Unswitched #3
has a variable adjustment control located on the bottom side of the 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.
2.7 Intercom wiring
See Appendix C and D for intercom connection configurations. It is critical to the proper operation of this
system to have this connector wiring made in accordance with these diagrams. Use 2- and 3-conductor,
MIL-spec cable as shown. Connect the shields at the audio panel end only, and tie to the audio low inputs
as shown.
NOTE
The system 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 Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-9 Rev. 12, Jan. 2014
2.7.1 Entertainment Inputs
The PAR100EX has two INDEPENDENT inputs wired into the rear connectors, in addition to the Bluetooth® music streaming (which is presented as Music 1). Entertainment input number 1 is J2 pins 23 (left
channel) and 24 (right channel), with respect to pin 25, and Entertainment number 2 is connected to 26
(left channel), 27 (right channel), with respect to 28.
Music #1 is available to the pilot and copilot positions, only, in normal configuration. Music 1 can be hear
by all aircraft occupants, if Music 1 all headsets is activated. See §2.7.1.1
Music 2 is only heard by the passengers.
See § 3.9 for music distribution information.
NO T E
Us e th e low l evel ou tp ut of an y a ddi tion al en ter tai nme n t d ev i ce to con nec t to th e a udi o pan el . M axi m um si gn a l l ev e l is 3 VAC p-p . DO NOT use a s p ea ker -l ev e l ou t put ,
th is w i ll ca use i nt er na l d a mag e in th e au d io p an el.
2.7.1.1 Music 1 all headsets (J2, Pin 22)
If J2, Pin 22 is connected to aircraft ground, Music 1 will also be heard in the passengers’ headsets. Music
2 will be disabled when J2, Pin 22 is grounded.
2.7.2 Entertainment muting
The PAR100EX-system incorporates a "Soft Mute™" system. This will mute the entertainment devices
during intercom conversation or radio reception. The four muting modes are controlled by the front panel
“Mute” button. See §3.9 for more information.
CAUTION
Local oscillators and internal signals from entertainment equipment can cause undesired interference with
other aircraft systems. Before takeoff, operate the entertainment devices to determine if there is any adverse effect within the aircraft systems. If any unusual operation is noted in flight, immediately switch off
the entertainment devices.
All entertainment devices must be switched off for both takeoff and landing.
2.7.2.1 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.
2.8 Disassembly
Remove the top cover, by removing four (4) or five (5) Phillips head screws from the PAR100EX top.
NOTE: THE SCREW IN THE REAR OF THE PANEL (if present) IS A DIFFERENT LENGTH
THAN THE OTHER FOUR. YOU MUST PUT THIS SHORTER LENGTH SCREW BACK IN
THE SAME LOCATION OR DAMAGE WILL OCCUR. See Figure #2-2.
There is a spacer on the screw on the front right corner that will fall out. Save and retain for later.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-10 Rev. 12, Jan. 2014
Figure 2-4 Screw Location and disassembly
2.9 Conversion to 12V electrical system.
As shipped from PS Engineering, the PAR100EX is configured to operate in 24 aircraft. This protects the
M760REM from damage if installed in 24 volt aircraft.
If operation in a 12-volt aircraft is desired, internal jumpers must be changed to allow operation of the
M760REM. Disassemble the unit as described in §2.8.
1. The operating voltage is configured with selection jumpers located in the back corner near the
left sub-D connector. See Figure #2.
Long screws
Short screw
(if pr
e
sent)
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-11 Rev. 12, Jan. 2014
Figure #2
Jumpers in 24V location
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-12 Rev. 12, Jan. 2014
2. Relocate the red jumpers so it matches the picture below.
Jumpers set for 12 V Operation Jumpers set for 24V operation
Jumpers set for 12V operation Jumpers set for 24V operation
2.10 Adjustments
The PAR100EX is factory adjusted to accommodate the typical requirements for most aircraft configurations. There are three adjustments accessible through the top cover (see §2.8) that allow the installer to
fine tune the specific functions.
Unswitched Input 3 Volume (US3), adjust from 50% to 200% of input value. Turn counterclock-
wise to increase gain.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-13 Rev. 12, Jan. 2014
TEL VOL- The received telephone volume. The unit is set at the factory for 75% of volume. Turn
Clockwise to increase the TEL receive volume.
LCD CST: adjusts display contrast to suit individual preferences and ambient light.
Figure 2-5 PAR100EX Cover adjustment locations
2.11 Microphone gain reduction
For installations in very noisy aircraft, a reduction in the intercom microphone input gain may be desirable. The PAR100EX has two DIP switches located on the main board that can switch the inputs to a
lower gain setting.
Remove the top cover (see §2.8), and locate the two DIP switches near the mounting rod at the rear of the
unit.
Unswitched 3
LCD Contrast
TEL VOL
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-14 Rev. 12, Jan. 2014
Figure 2-6 – PAR100EX DIP Switches
Figure 2-7 DIP switches
Change the settings as shown in the table below.
Switch Noisy Cockpit Normal Cockpit Switch Bank
Pilot Microphone
1 OFF ON
2 ON OFF
Copilot Microphone
3 OFF ON
J5
4 ON OFF
Passenger 1 Microphone
1 OFF ON
2 ON OFF
Passenger 2 Microphone
3 OFF ON
J4
4 ON OFF
Table 2-5 Microphone gain settings
1
2
3
4
5
6
ON
OFF
ON
OFF
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
DIP Switches
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-15 Rev. 12, Jan. 2014
Carefully reassemble the unit.
2.12 Reassembly
3. Using the nylon spacer removed in step 2, compress the spacer so it becomes ob-
long.
Figure #3
a. Install one long screw through the top lid, near the front edge on the power
supply board side, and add then add the nylon spacer from § 2.8.
Figure #4
4. Place the lid back on the unit aligning holes.
5. Install qty. 3 more long thread screws into the lid.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-16 Rev. 12, Jan. 2014
6. Install qty. 1 short thread screw to the rear of the unit.
2.13 Communications Antenna Installation Notes
2.13.1 Metal Skin Aircraft
For metal skin aircraft a ¼ wave whip is the easiest antenna to fit. Ensure that the antenna base and the
coax shield are firmly grounded to the skin of the airframe, on the inside of the aircraft. Ensure that any
anti-corrosion product, which may be used to seal the exterior surface, does not isolate the antenna base
from the airframe. For best performance, the whip should be straight and vertical, when mounted
on the airframe.
Refer to the Microair Avionics website www.microair.com.au for more detail on antennas suitable for
metal skin airframes.
2.13.2 NON-METAL SKIN AIRFRAMES
For non-metal airframes, a ¼ wave whip may still be used, but a ground plane must be installed, on the
inside face of the aircraft skin. The ground plane should ideally be circular, and as a minimum, have a
diameter of half the height of the whip. The ground plane should be fabricated from a lightweight metal,
eg thin aluminum sheet. For best performance, the whip element should be as vertical as possible. An alternative antenna for non-metal airframes is the Ground Plane independent dipole. This antenna is physically similar to the ¼ wave whip, but has a small flexible stub antenna pointing downwards from the antenna base. The stub section of the antenna takes the place of the ground plane, and simplifies installation.
Avoid mounting locations which position the antenna parallel to nearby metallic airframe structures such
as tube framing, brackets, ribs, or frames. Metal objects which are close and parallel to the antenna will
adversely affect performance. If the installation has two radios, the two antennas should be separated horizontally by at least the length of the antenna. In the case of airband antennas this should be approx 1m
(3ft). The further apart the better.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-17 Rev. 12, Jan. 2014
Beware of fabric surfaces with silver dope finishes. The silver dope is a conductive surface, and will
screen antennas which are mounted internally. Refer to the Microair Avionics website
www.microair.com.au for more detail on antennas suitable for non-metal skin aircraft.
2.13.3 Antenna Location
For best results while in Split Mode, we recommend that the one VHF communications antenna is located
on top of the aircraft while the other communications antenna is installed on the bottom. Any antenna
relocation must be accomplished in accordance with AC 43.13-2B, aircraft manufacturers’ recommendations, and other FAA-approved technical data.
WARNING
It is probable that radio interference will occur in the split mode when the frequencies of the two aircraft radios are adjacent, and/or the antennas are physically close together. PS Engineering makes
no expressed or implied warranties regarding the suitability of the PAR100EX in Split Mode.
2.14 M760REM Adjustments
The microphone gain and sidetone are adjustable via the trim pot(s) which can be accessed
via the small hole(s) in the side of the chassis.
Figure 2-8 Radio Adjustment Locations
Figure 2-9 Sidetone adjustment range
The radio receive audio level is adjusted at the rear of the case.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-18 Rev. 12, Jan. 2014
Figure 2-10 Radio Output Level Adjustment
2.14.1 Installation of Ferrite Core Suppressor.
The RFI suppressor must be installed on the audio/data cable as shown to prevent RFI.
These devices are fitted over wiring harnesses to “attenuate” the RF noise signals passing along the wires.
Symptoms may include:
1. Squelch light stays illuminated (without any transmit or receive).
2. Excessive noise heard in the headset (in transmit or receive),
3. Garbled or otherwise poor transmit audio, particularly when engine is running or revving higher.
In addition, if symptoms occur, check all ground connections (do a visual and physical check) to ensure
that they are making proper contact (if any are even slightly suspect rework them); this includes any circuit breakers, batteries etc.
Figure 2-11 Ferrite Installation
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-19 Rev. 12, Jan. 2014
2.15 PAR100EX Pin assignments
J1 Function J2 Function
1 No Connect 1 Pilot Phones Lo
2 No Connect 2 Copilot Phones Lo
3 No Connect 3 Copilot Phones (L)
4 No Connect 4 Copilot Phones (R)
5 No Connect 5 Lights lo
6 No Connect 6 12/28 V Lights
7 No Connect 7 12/28 V Lights
8 No Connect 8 Aircraft Power (12 VDC)
9 Com 1 Audio 9 Aircraft Power(12 VDC)
10 Com 1 Audio Lo 10 Aircraft Ground
11 Com 1 Mic 11 Aircraft Ground
12 Com 1 Mic Key 12 No Connect
13 Com 2 Audio 13 Music 2 Mute Inhibit
14 Com 2 Audio Lo 14 Music 2 Mute Inhibit Lo
15 Com 2 Mic 15 Unswitched #4
16 No connect 16 Pilot Phones (L)
17 Aux 1 Audio 17 RS232 RXD
18 Aux 1 Audio Lo 18 No connect
19 Aux 2 Audio 19 No connect
20 Aux 2 Audio Lo 20 Swap
21 No Connect 21 Swap Low
22 Unswitched #3 Lo 22 Music 1 All Headsets
23 No Connect 23 Music 1 (L)
24 No Connect 24 Music 1 (R)
25 No Connect 25 Music 1 Lo
26 No Connect 26 Music 2 (L)
27 No Connect 27 Music 2 (R)
28 No Connect 28 Music 2 Lo
29 Unswitched #3 29 RS232 TX
30 Com 2 Mic Key 30 +12 VDC Radio Out
31 Unswitched Audio 1 31 Pilot Phones (Rt)
32 Unswitched Lo 32 Copilot Mic Audio
33 Pilot Mic Audio 33 Copilot Mic PTT
34 Pilot Mic PTT 34 Copilot Mic Lo
35 Pilot Mic Lo 35 Pass 1 Mic Audio
36 No Connect 36 Pass 1 Mic Audio Lo
37 No Connect 37 Pass 2 Mic Audio
38 No Connect 38 Pass 2 Mic Audio Lo
39 No Connect 39 No Connect
40 Pass HP (L) 40 Unswitched #4 Lo
41 Pass HP (R) 41 No Connect
42 Pass HP Lo 42 +12 VDC Radio Lo
43 Unswitched 2 Lo 43 Radio Power Ground
44 Unswitched 2 Audio 44 Radio power
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-20 Rev. 12, Jan. 2014
2.16 Post Installation Checkout
After wiring is complete, verify power is ONLY on pins 8, 9 and 44 of the J2 and airframe ground on
connector pins 10, 11 and 43. Failure to do so will cause serious internal damage and void PS Engineering's warranty.
2.17 Unit Installation
To install the PAR100EX, 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.
2.18 Operational Checkout
NOTE
The IntelliVox® is designed for ambient noise levels of 80 dB or above. Therefore some clipping may occur in a quiet cabin, such as without the engine running, in a hangar. This is normal.
1. Apply power to the aircraft and avionics.
2. Plug headsets into the pilot, copilot, and occupied passenger positions.
3. Verify fail-safe operation by receiving and transmitting on com 1 from the pilot position, with the
audio panel power off. The Com audio will be present in one ear cup only.
4. Switch on the unit by pressing the volume (VOL) knob.
5. Check intercom operation.
6. Push the Com 1 Xmt select button (lower row).
7. Verify that both of the Com 1 buttons light. Verify that transmit button LED (Light Emitting Diode)
near the mic selector is not blinking. If the LED is blinking, stop testing and troubleshoot the microphone PTT installation.
8. Verify proper transmit and receive operation from the copilot position, noting that the copilot PTT
switch allows proper transmission on the selected transceiver. Verify that the Com 1 Xmt button
blinks when transmitting.
9. Verify that pushing the COM 2 button causes the button to illuminate, and the Com 2 receiver to be
heard. Verify operation on Com 1 from the pilot position.
10. Repeat for Com 2
11. Press and hold the Com 1 Xmt button. While holding the Com 1 button, press the Com 2 Xmt button.
This places the unit in “Split Mode;” Verify that the pilot can transmit and receive on Com 1, while
the copilot transmits and receives on Com 2.
12. Verify proper operation of all receiver sources by selecting them using the appropriate means. The A1
and A2 indicators illuminate to show which navigation audio source is in use.
13. Verify that the appropriate LED in the lower button row blinks when either push to talk is keyed.
14. Verify proper Intercom system operation in the ALL, ISO and CREW modes (see Table 3-1).
15. Verify that the audio selector panel system does not adversely affect any other aircraft system by sys-
tematically switching the unit on and off, while monitoring the other avionics and electrical equipment on the aircraft.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 2-21 Rev. 12, Jan. 2014
2.18.1 M760REM Checkout
2.18.1.1 Ground check:
1. Connect an in-line type watt meter and verify that the antenna VSWR does not exceed 2:1 across
the frequency band from 118.000 to 137.975 MHz.
2. Select the frequency of a local communications facility and verify that the receiver output is clear
and intelligible.
3. Establish communication with a local facility and verify that the transmission is reliable, and
quality is clear and intelligible. Verify that sidetone is present for the appropriate crewmembers
and passengers (depending on intercom mode).
2.18.1.2 Flight check:
1. Maintain at least 1500 feet AGL, and establish reliable contact with a facility at least 25 nm
away.
2. Contact a facility within five nm and verify reliable contact.
3. Open the radio squelch by pushing the right knob for more than 2 seconds (or until the volume
and squelch bars appear), and listen for any unusual electrical noise that might reduce the communications receiver sensitivity.
4. Verify operation at both high and low end of the frequency band (118.000 to 136.975 MHz) if
possible.
2.18.2 TELEPHONE Checkout
Activate the TELEPHONE mode using the Bluetooth device. 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.
2.19 Final Inspection
Verify that the wiring is bundled away from all controls and no part of the installation interferes with aircraft control operation. Move all controls through their full range while examining the installation to see
that no mechanical interference exists. Verify that the cables are secured to the aircraft structure in accordance with good practices, with adequate strain relief. Ensure that there are no kinks or sharp bends in the
cables and coaxial cables. Verify that the cables are not exposed to any sharp edges or rough surfaces, and
that all contact points are protected from abrasion.
Return completed warranty registration application to PS Engineering, or complete online at www.psengineering.com.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 3-1 Rev. 12, Jan. 2014
Section III OPERATION
3.1 SCOPE
This section provides detailed operating instructions for the PS Engineering PAR100EX, Audio Selector
Panel/Intercom/VHF Communication Control 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 PAR100EX systems. They
are Communications Transceiver Selection, Audio Selector, Intercom, VHF COM, entertainment, telephone, and display.
Figure 3-1 PAR100EX 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 portion will revert to fail-safe mode.
The power switch controls all audio selector panel functions and the intercom. All pushbutton selections
and menu modes (except Bluetooth telephone association) will be remembered and return to the last state
when turned on.
3.2.1 ICS and Music Volume Controls (1)
The inner knob (ICS) controls the volume of the intercom audio. It does not affect the radio, telephone, or
music volume.
The outer knob (♫) controls the volume of the Music 1 input (and Bluetooth music). It has no effect on the
radio, intercom, telephone, or Music 2 input for the passengers.
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.
3.2.2 M760REM Radio power (as COM 1)
The power supply for the M760REM communication transceiver is separate from the audio panel power
and control. When the M760REM is installed as COM 1, or as a stand-alone COM, it can be controlled
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
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separately in the event of a problem in the audio panel portion, or audio panel power.
If the audio panel is turned off by the left knob (or the audio panel breaker is opened), the display will
indicate “Push radio knob within 6 (countdown”) seconds to keep radio on” If the knob is not pushed, the
com radio will also turn off, but if the data knob is pushed within, the radio display, volume and frequency
control will remain active.
3.3 Communications Transmit (XMT) Selection (2)
The two buttons C1 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 PAR100EX-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 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 PAR100EX “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 PAR100EX 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.
NO T E
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.
3.4 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 (A1 & A2).
3.5 Navaid Audio selection (4)
VHF Navigation receiver audio is selected through two momentary, push-button, backlit switches.
The users can identify which receivers are selected by noting which green LEDs are lit above the button.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 3-3 Rev. 12, Jan. 2014
Navigation aid audio push buttons are labeled A1, A2.
The MKR (Marker), ADF AUX (auxiliary) and DME audio is available is interfaced through an
unswitched input.
3.6 VHF Transceiver control (5)
The right side of the PAR100EX is dedicated to control of the VHF communications transceiver. Frequency selection is always directed to the STANDBY side of the display.
3.6.1 Frequency Selection (6)
Turn the large (outer) knob to change the frequency whole MHz, and the smaller, inner knob to change
the .100 MHz frequency.
Push the small knob momentarily to transfer standby frequency to the active frequency.
3.6.2 Radio Volume and Radio Squelch (7)
To change the radio volume, or defeat the automatic radio squelch, push and hold the frequency-select
knob for one second, until the display changes to the menu.
Turn the large knob to turn the radio squelch on or off (to listen for weak signals), and the small knob to
adjust the radio receive audio level. You can push the knob again to return to the frequency display, or the
display will revert automatically after five seconds without any activity.
3.6.3 Monitor Mode (COM 1 or stand alone only)
If the M760REM is interface as a stand alone COM or as COM 1, the radio’s standby frequency monitor
can be used. To activate the monitor mode, press and hold the C2 RCV button until “MON” appears in
the display.
Push/hold for
>1 sec.
Push momentarily
to transfer.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 3-4 Rev. 12, Jan. 2014
When MON is active, the receiver is tuned to the Standby frequency and passes received audio on that
channel. When the Active frequency receives a signal, the signal from the active frequency is automatically provided to the audio.
Both active and standby frequencies are monitored at the same time for a signal. A signal can be received
on either the active or the standby frequency.
While receiving a signal on the active frequency - the standby channel is NOT monitored.
While receiving a signal on the standby frequency - the active channel is periodically monitored. If a sig-
nal is found on the active frequency the M760REM will revert to the active frequency. After a signal has
been received, the M760REM will return to monitoring both frequencies.
It will be important to remember which frequency is active and which is standby, to avoid answering a
transmission on the standby frequency by transmitting a response on the active frequency.
NOTE:
Although the M760REM can select and receive on the VHF NAV frequencies (108.00 to 117.95 MHz),
transmission is inhibited.
3.7 Intercom Operation (8)
3.7.1 IntelliVox® VOX-Squelch
No manual adjustment of the IntelliVox® squelch control is possible. Through individual signal processors, the ambient noise appearing in all four microphones is constantly being sampled. Non-voice signals
are blocked. When someone speaks, only their microphone circuit opens, placing their voice on the intercom. The intercom can be configured for high noise environment by internal switching. See § 2.10 for
more information.
The system is designed to block continuous tones; therefore people humming or whistling in monotone
may be blocked after a few moments.
For consistent performance, any headset microphone must be placed within ¼-inch of your lips, preferably against them. (ref: RTCA/DO-214, 1.3.1.1 (a)).
NOTE
It is also a good idea to keep the microphone out of a direct wind path. Moving your head through a vent
air stream may cause the IntelliVox® to open momentarily. This is normal.
The IntelliVox® is designed to work with normal aircraft cabin noise levels (70 dB and above). It loves
airplane noise! Therefore, it may not recognize speech and clip syllables in a quiet cabin, such as in the
hangar, or without the engine running. This is normal.
For optimum microphone performance, PS Engineering recommends installation of a Microphone Muff
Kit from Oregon Aero (1-800-888-6910). This will not only optimize VOX performance, but will improve
the overall clarity of all your communications.
Table 3-1 Mic Muff ™ Part Numbers
Manufacturer Model Mic Muff™ Part Number
Bose Dynamic
Electret
M87 Dynamic
90010
90015
90020
David Clark H10-30
H10-20, H10-40
H10-13.4
90010
90015
90015
Lightspeed All 90015
Peltor 7003
7004
90010
90015
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 3-5 Rev. 12, Jan. 2014
Manufacturer Model Mic Muff™ Part Number
Pilot 11-20 & 11-90 90015
Sennheiser 90015
Telex Airman 750, Echelon
AIR3000
90015
90010
3.7.1.1
3.7.2 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 PAR100EX Stereo installation, one channel will be shorted. Although no damage to the unit will occur, passengers with stereo headsets will only
hear in one ear, unless they switch to the “MONO” mode on their headset.
3.7.3 Intercom Modes (8)
The “ICS” pushbutton switch on the left side of the panel provides the selection
of the three intercom modes.
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 entertainment. Neither will hear aircraft radio receptions or pilot transmissions.
When the audio panel is put into the “Split Mode” (pilot on COM 1, copilot on COM 2), the intercom
automatically enters the ISO mode to prevent confusion with two intercom conversations. The intercom
can be changed to the CRW or ALL mode if desired.
ALL: All parties will hear the aircraft radio and intercom. Crew and passengers will hear selected entertainment. During any radio or intercom communications, the music volume automatically decreases. The
music volume increases gradually back to the original level after communications have been completed.
CREW: Pilot and copilot are connected on one intercom channel and have exclusive access to the aircraft
radios. 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 Telephone Mode
3.8.1 Bluetooth Telephone Connection
Before the PAR100EX can be used in TELEPHONE mode with a
wireless Bluetooth connection, the unit must be associated with a
specific phone.
Activate the “seek device” function on the cell phone, and then enter the access code “0000” when the
phone detects the “PAR100EX” on the list of available devices.
When the PAR100EX is paired with the Bluetooth device, the letters “BT” appears in the display.
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 PAR100EX at the same time,
only the first phone will transfer audio to the panel.
If the Bluetooth connection fails to reconnect, or becomes unreliable for any reason, you can reset all
connections by turning off the PAR100EX, holding the A1 and A2 buttons down, and turning the unit
back on. This clears out all paired devices.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 3-6 Rev. 12, Jan. 2014
3.8.2 Telephone (TEL) Operation
When the Bluetooth-enabled phone receives an incoming call, the PAR100EX will play a ring tone.
Answer the call from your telephone handset. The PAR100EX 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 communications, 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 PAR100EX 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 capability
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
a fine.
3.9 Entertainment Inputs
The PAR100EX has two independent music inputs at the rear connector. The PAR1000EX also has the
ability to receive streaming music from a Bluetooth-enabled device. If both inputs are active, both will be
heard in the headset at the same time, there is not any prioritization.
Music #1 will be normally heard by the pilot and copilot positions ONLY. Music 2 is ONLY available to
the two passenger positions.
Music #1 can also be distributed to the passengers using the rear connector control (See § 2.7.1.1). The
streamed music in the PAR100EX is also Music 1.
Music Distribution
Mode
Standard Music
Distribution
Music 1
All Headsets
Music Source
ICS Mode
All Crew ISO All Crew ISO
Music 1 & (Blue-
tooth) Input
Crew Crew Copilot Crew
& Pass.
Crew &
Pass.
Copilot&
Pass.
Music 2 Input Pass. Pass. Pass.
NONE NONE NONE
Figure 3-2 Music distribution
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 3-7 Rev. 12, Jan. 2014
NOTE:
All music devices should be turned off for take off, landing, or any critical phase of flight. FAA Regulation 14 CFR
91.21 restricts the use of portable electronic devices.
§91.21 “(a) Except as provided in paragraph (b) of this section, no person may operate, nor may any operator or pilot
in command of an aircraft allow the operation of, any portable electronic device on any of the following U.S.registered civil aircraft. . .
“(b)(5) Any other portable electronic device that the operator of the aircraft has determined will not cause interference with the navigation or communication system of the aircraft on which it is to be used.”
You can refer to Advisory Circular 91.21-1A for more information, at http://www.faa.gov
3.10 Music Muting (9)
There are two SoftMute™ muting circuits. The front panel "Mute" button has four modes, and
controls the Mute function for music 1. Music 2 muting is controlled by an external switch, and
has two modes, mute on and mute off.
The SoftMute™ circuit will cut the music out whenever there is conversation on the radio, the
intercom, or both, depending on the “Mute” mode selected. When that conversation stops, the
music returns to the previous level comfortably, over a second or so.
The Music 1 mute mode functions are controlled through sequential pushes of the Mute button, and include LED indication of the mode selected.
MUTE ON - music will mute with either intercom or radio – MUTE ON button is lit.
RADIO MUTE – Intercom will not mute music, radio will mute music. RAD LED indicator is on
INTERCOM MUTE - Radio will not mute music, intercom will mute music - MUTE ICS LED is ON.
MUTE OFF - “Karaoke” mode - music will not mute except during outgoing transmissions.- All Indi-
cators off.
♫ Music
Intercom Radio LED INDICATOR
Mute ON Muted Muted ON
Mute OFF ♫ ♫ None
Radio Mute ♫ Muted RAD
ICS Mute Muted ♫ ICS
The passenger’s intercom also has a SoftMute™ circuit. If the passengers hear the radio, or talk on the
intercom, the music will mute. If the audio panel is in CREW mode, then the radio reception will not affect the passenger music.
3.10.1 Music 2 Mute Control
Passengers also have a Karaoke Mode. If the passengers are listening to the music 2 input, their Karaoke
Mode is activated by an external switch. See § 2.7.2.1
If the passengers are listening to the Music 1 input, their Karaoke Mode is controlled by the front panel
“Mute” button.
3.10.2 Liquid Crystal Display Control
The contrast on the LCD display can be controlled by using a service adjustment located inside of the unit.
See § 2.10 for adjustment information.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Page 4-1 Rev. 12, Jan. 2014
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 PS Engineering authorized dealer, or 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 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.
All transportation charges for returning the defective units are the responsibility of the purchaser. All domestic transportation charges for returning the exchange or repaired unit to the purchaser will be borne by
PS Engineering, Inc. The risk of loss or damage to the product is borne by the party making the shipment,
unless the purchaser requests a specific method of shipment. In this case, the purchaser assumes the risk
of loss.
This warranty is not transferable. Any implied warranties expire at the expiration date of this warranty.
PS Engineering SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES.
This warranty does not cover a defect that has resulted from improper handling, storage or preservation,
or unreasonable use or maintenance as determined by us. This warranty is void if there is any attempt to
dissemble this product without factory authorization. This warranty gives you specific legal rights, and
you may also have other rights, which may vary from state to state. Some states do not allow the exclusion
of limitation of incidental or consequential damages, so the above limitation or exclusions may not apply
to you.
All items repaired or replaced under this warranty are warranted for the remainder of the original warranty period. PS Engineering, Inc. reserves the rights to make modifications or improvements to the product without obligation to perform like modifications or improvements to previously manufactured products.
4.2 Factory Service
The units are covered by a two-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 Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Appendix A Rev. 12, Jan. 2014
Appendix A – External PTT Hook Up
Part of the installation includes the installation of PTT (Push To Talk) switches that allow the use of your
aircraft radio for communications transmissions.
There are three possible configurations ; you must select the case that best fits your installation.
NOTE: Only the person who presses their PTT switch will be heard over the radio.
CASE I
The PTT is built into the pilot and copilot yokes
Simply install the plugs from the headset into the aircraft headphone jacks. Then use the yoke mounted
PTT to transmit. No other action is required.
CASE II
Built in PTT only on the pilot side only
This configuration requires a modified external PTT switch plugged into the copilot's mic jack. (See Details Below) When the copilot's PTT is depressed, this activates an internal relay that switches the mic
audio to the aircraft radio from the pilot to the copilot.
Case III
No built in PTT switch at all.
Two built-in PTT must be installed, or two external, modified PTT switches will be required for both the
pilot and copilot. Modifications to the PTT are required. (See details below)
Push To Talk Modifications
When received from the manufacturer, an after-market PTT switch opens the mic audio path to the "ring"
connection of the PTT mic plug until the button is pressed. When the PTT is between the intercom and
the headset, the intercom function will not work unless the PTT switch is depressed. A simple modification can be performed to allow proper intercom operation. NOTE: This mod does not alter normal operation.
Below are some examples of typical modifications. Contact the PTT manufacturer for more details if necessary.
Procedures For David Clark PTT
Unscrew the round black plastic cover from the jack.
Connect the joined black wires to the red wire.
Replace the round black plastic cover.
Procedures for Telex PT-200
Unscrew the round black plastic cover from the jack.
Cut the red wire in the middle of the wire.
Strip both ends of the insulation.
Solder the two ends to the ground lug to the PTT jack.
Replace the round black plastic cover.
Procedures for Telex PT-300
Unscrew the round black plastic cover from the plug jack.
Remove the heat shrink material from the joined black wires.
Solder these two wires to the lug that has a white wire already soldered to it.
Replace the round black plastic cover
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Appendix B Rev. 12, Jan. 2014
Appendix B – PAR100EX Installation Drawings
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 as sy
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
6.31in
1.28in
Caut i on : A p pl y st ea dy pr e s su re to t he b e z el wh ile sc r ewin g t he u ni t i n to th e t ra y to
en s ur e e v e n s e ati n g o f th e u nit an d c o n ne c t or s.
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Appendix B Rev. 12, Jan. 2014
M760REM Radio Installation Drawings
3.40 in
4.60 in
2.99 in
3.70 in
.160 x .400 in
4 places
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Appendix C Rev. 12, Jan. 2014
Appendix C – J1 Connector Interconnect
Com 1 Audio Hi
Com 1 Mic Key
Com 1 Audio Lo
Primary
Communications
Transceiver
Secondary
Communications
Transceiver
(R760)
Nav 1 Audio Hi
Nav 1 Audio Lo
VHF Nav 1
Nav 2 Audio Hi
Nav 2 Audio Lo
VHF Nav 2
Unswitched Input #1 Hi
Unswitched Audio Lo
Unswitched Audio #1
Unswitched Input #2 Hi
Unswitched Audio Lo
Unswitched Audio #2
Pilot Mic Audio Hi
Pilot Mic PTT
Pilot Mic Lo
9
10
11
12
Com 1 Mic Audio Hi
Com 2 Audio Hi
Com 2 Mic Key
Com 2 Audio Lo
13
14
15
30
Com 2 Mic Audio Hi
17
18
19
20
29
17
31
32
44
43
33
34
35
30
42
11
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. All shielded wires must be MIL 22750 or 27500.
5. Unswitched inputs are always presented to
crew headphones, regardless of SPR switch or PTT.
Unswitched #3 is adjustable
6. All connections for R760 Radio shown for convenience.
Shown as COM 2. Can be connected as COM 1. See 2.5.2.
7. Ferrite RFI Supressor, 507-000-0065 must be installed
on radio audio and data lines. See Sect. 2.14.1
Pilot PTT
PAR100EX Connector, J1 (Sub-D 44-pin, male on tray)
Unswitched Input #3 Hi
Unswitched Audio Lo
Unswitched Audio #3
29
See Note 5
Pass. Phones (R)
Pass Phones (L)
Pass. Phones Lo
Pass. 1 PhonesJack
Pass. 2 Phones Jack
22
41
40
42
RS232 TX
RS232 RX
14
12
1
7
2
5
Radio Power
Radio Ground
9
11
J2
See Note 6
Ferrite RFI Supressor
(507-000-0065) see Note 7
PS Engineering Inc. ®
PAR100EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-760-0000 Appendix D Rev. 12, Jan. 2014
Appendix D – J2 Connector Interconnect
20
31
16
1
35
36
24
23
25
4
3
2
Copilot Phon es (R)
Copilot Phon es (L)
Copilot Phon es Lo
Pass. 1 Mic Jack
Pass. Mic Lo
Pass. Mic Hi
37
38
Pass. 2 Mic Jack
Pass. Mic Lo
Pass. Mic Hi
32
33
34
Copilot Mic Audi o
Copilot PTT
Copilot Mic Lo
Copilot PTT
Copilot Mic Jack
14
13
Ent. #2 Mute
PAR100EX 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
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
29
17
Radio Pow er
44
Swap
Switch
Swap
10
11
43
1. All Power, and Ground wires must be #22 gage wire
Lighting #22 AW G, other wires minimum #24 AW G.
2. All shields should be grounded at audio panel only,
other end remains floating
3. Pins 8 and 9 connected through a 3 A break er to aircraft power
for the audio panel.
Pin 44 is connected through a SEPARATE 3A breaker to aircraft
power for communication radio.
Breakers mus t be pull-type.
4. All shielded wires must be MIL 22750 or 27500.
5. For music distribution information, see Section 2.5.1.
6. 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 nois e.
7. This system shipped configured for 24VDC .
See section 2.9 for 12V operation.
Unswitched Input #4 Hi
Unswitched Au dio Lo
Unswitched Audio #4
15
40
7
6
5
12 V Lights Hi
12-Volt lights lo
3A Breaker
See Note 3, 7
Note 6
Backlighting
See Sect. 2.6.3
3A Breaker
See Note 3 & 7
RS232 TXD
RS232 RXD
Communications
Transceiver
(R760)
2
5
9
11
30
42
Radio Power
Radio Ground
Audio Panel Power
(Shipped for 24V)
Music 1 All headsets
22
CAUTION
TO P RE VENT DAMAGE TO THE
M760REM, THE PAR100EX MUST
BE PROPE RLY CONFIGURE D FOR 12
OR 24 OR 24 VDC OP ERATI ON.
PASS Music
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