PS Engineering PDA360EX Installation Manual

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.
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