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Document P/N D201106000060 

June 2011

 

Audio Selector Panel with Marker Beacon Receiver 

High-fidelity Stereo Intercom 

System Installation and Operation Manual

  

FAA-Approved TSO C50c, C35d 

JAA-Approved JTSO C50c, 2C35d 

Patented under one or more of the following; No. 4,941,187; 5,903,277; 

6,160,496 and 6,493,450

 

 

PS Engineering, Inc. 2011 ©

 

Copyright Notice

 

Any reproduction or retransmittal of this publication, or any portion thereof, without the expressed written permission of Honeywell, 
Inc. is strictly prohibited. For further information contact the Publications Manager at Honeywell, Inc., 9800 Martel Road, Lenoir City, 
TN 37772. Phone (865) 988-9800, email [email protected]

.

 

Summary of Contents for KMA 28B

Page 1: ...nder one or more of the following No 4 941 187 5 903 277 6 160 496 and 6 493 450 PS Engineering Inc 2011 Copyright Notice Any reproduction or retransmittal of this publication or any portion thereof without the expressed written permission of Honeywell Inc is strictly prohibited For further information contact the Publications Manager at Honeywell Inc 9800 Martel Road Lenoir City TN 37772 Phone 86...

Page 2: ... DUPLEX TEL FUNCTION FOR CELL PHONES 2 4 2 4 6 TRANSMIT INTERLOCK 2 5 2 4 7 SWAP MODE 2 5 2 4 8 BACKLIGHTING 2 5 2 4 9 UNSWITCHED INPUTS 2 5 2 4 10 PA MUTE J1 PIN 18 2 5 2 4 11 PUBLIC ADDRESS FUNCTION J2 PIN 18 2 5 2 4 12 CONTROL OUTPUT J2 PIN A 2 6 2 4 13 INTERCOM WIRING 2 6 2 4 14 ENTERTAINMENT INPUT 2 6 2 4 15 KMA 28B INTERCOM EXPANSION J2 PINS P S AND C 2 7 2 5 MARKER BEACON INSTALLATION 2 7 2...

Page 3: ...VOX VOX SQUELCH 3 3 3 6 2 INTERCOM VOLUME CONTROL 3 4 3 6 3 INTERCOM MODES 3 4 3 6 4 ENTERTAINMENT INPUT 3 5 3 7 TELEPHONE MODE 3 6 3 8 MARKER BEACON OPERATION 3 6 APPENDIX A KMA 28B INSTALLATION DRAWING A APPENDIX B BOTTOM CONNECTOR INTERCONNECT B APPENDIX C TOP CONNECTOR INTERCONNECT C APPENDIX D INSTRUCTIONS FOR FAA FORM 337 AND CONTINUING AIRWORTHINESS D 7 1 INSTRUCTIONS FOR FAA FORM 337 AUDIO...

Page 4: ...S autopilot disconnect and or radar al timeter warning Push buttons select the receiver audio source provided to the headphones A SPR button allows the user to listen to the receiver s selected on the cabin speaker Except for the unswitched inputs all speaker audio is muted during transmit Push buttons select one of the communication transceivers for the pilot and copilot position and allows radio...

Page 5: ...relevant portions of EUROCAE RTCA MPS WG No 7 70 DO 143 and Marker Beacon Receivers ED 14C DO 160C Environmental Conditions and Test Procedures for Airborne Equipment ED12B DO 178B Software Considerations for Airborne Equipment and ED 18 DO 214 Audio Systems Characteristics and Minimum Operational Performance Standards for Aircraft Audio Systems Operation is subject to the following conditions Thi...

Page 6: ...00 Hz Music Freq Response 3 dB 20 Hz 18kHz MARKER BEACON RECEIVER if equipped Frequency 75 MHz Crystal Controlled Sensitivity Low High Capable of preset at factory for field application 1000 Volts Hard 360 to 570 V soft 200 Volts Hard 130 to 200 V soft Selectivity 6 dB at 10 kHz 40 dB at 120 kHz External Lamp Output 7 5 4 VDC unloaded at maximum brightness VDC positive when active max current 125 ...

Page 7: ...12 6 32 Clip Nut 6 475 630 0002 Parts identification sheet 1 002 250 7028 Pilot s Guide 1 D201106000061 1 7 EQUIPMENT REQUIRED BUT NOT SUPPLIED a Circuit Breaker 1 ea 3 amp PULL TYPE REQUIRED for KMA 28B b Speaker 4 c Headphone Jacks Stereo as Required d Microphone Jacks as Required e Headphones 150 Stereo up to 6 as required f Microphones up to 6 as required g Marker Antenna 75 MHz VSWR 1 1 5 and...

Page 8: ... the shipping mate rial and contact the freight carrier Do NOT return units damaged in shipping to Honeywell If the unit or accessories show any sign of external shipping damage contact Honeywell to arrange for a replacement Under no circumstances attempt to install a damaged unit in an aircraft Equipment returned to Honeywell for any other reason should be shipped in the original Honeywell packag...

Page 9: ...g and installation using the cable clamp 625 001 0002 Secure the ground bar 430 007 0001 if desired using 6 32 nuts 475 632 0003 and 6 32 lock nuts 475 632 0004 Figure 2 1 Audio Panel Tray Assembly Drawing 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 an...

Page 10: ...ted It is very important that you use insulated washers to isolate the ground return path from the airframe to all headphone and microphone jacks Adding a high performance audio control system particularly in conjunction with high performance ac tive noise canceling headsets cannot improve on older avionics that were designed for cabin speaker use Honeywell makes no claim that the audio panel will...

Page 11: ...applies the pilot or copilot microphone to the Com 3 when the appropriate PTT is activated If J2 Pin J is connected to aircraft ground the KMA 28B is forced into Com 3 Duplex mode Copilot and passenger audio as selected by hook switches are provided to the COM 3 output the PTT for Com 3 is inactive and audio from Com 3 is presented to the headset This allows a telephone like audio interface The CO...

Page 12: ... of the unit backlighting is through the aircraft avionics dimmer Connect the dimmer control line to J1 pin D for 14 volt systems and to J1 pin F for 28 volt systems Pin E is light ground If an external dimmer control is not used a constant low level back light illumination can be established for nighttime viewing Pin D or F depending on system voltage must be tied to power J1 pin 20 for the back ...

Page 13: ...Simply call the factory and obtain a wire harness work sheet The harness will be made to your specifications and fully functionally tested All hardware is included 2 4 13 1 Alternate Intercom Mode Bottom connector Pin 14 Units with serial number beginning with J or above If an external switch is installed between pin 14 of the bottom connector and ground the KMA 28B can be placed into Alternate In...

Page 14: ... C The KMA 28B contains a 6 place intercom In applications where more intercom positions are needed Honeywell can provide intercom expansion units such as the IntelliPax part number 11606 11606R etc These can add up to six additional stereo intercom stations plus independent music input Interface to the expansion unit is through J2 pins P audio input from expansion unit S audio output to expansion...

Page 15: ...Split Mode it is recommended that the one VHF communications antenna is lo cated on top of the aircraft while the other communications antenna is installed on the bottom Any an tenna relocation must be accomplished in accordance with AC 43 13 2A aircraft manufacturers recom mendations and FAA approved technical data Warning It is probable that radio interference will occur in the split mode when t...

Page 16: ...all on the Com 3 duplex system The hook switches are not active or required unless the audio panel is in Com 3 Duplex mode with pin J J2 grounded The wireless communication TEL system utilizes an intercom loop Therefore any time the cell phone is in use from the pilot or copilot side pilot and copilot will lose intercom capability In the ALL mode when the passengers activate the cell phone the pil...

Page 17: ...ent 2 In L J2 Top Connector Input Output Pilot Mic Audio Hi In Com 3 Audio Hi Com 1 Audio Hi Com 2 SPKR Load AUX Audio Input Hi Com 1 Spkr Load Com 2 Audio Hi Aircraft Power 11 33 VDC ADF Audio Hi Com 2 SPKR load Unswitched Audio In 1 Unswitched Audio In 2 Com 3 Mic Key Com 1 Mic Key Nav 2 Audio Hi Com 1 Mic Audio Hi Nav 1 Audio Hi Com 2 Mic Audio Hi 28V Lights Hi Light Lo 14 V Light Hi Amber Lamp...

Page 18: ...s 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 the right 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 D...

Page 19: ...d respectively 2 Repeat with the unit in LOW sensitivity with 430 Volts applied 3 Connect the marker antenna and verify proper operation 2 10 3 Receiver Sensitivity Although the receiver meets FAA TSO C35d sensitivity specifications the sensitivity has been adjusted to meet real world requirements 150 V and 430 V soft This will usually eliminate the need for the avi onics shop to reduce the sensit...

Page 20: ...rectly to Com 1 This allows communication capability regardless of unit condition Any time power is removed or turned OFF the audio selector will be placed in the fail safe mode The power switch also controls the audio selector panel functions intercom and marker beacon receiver 3 3 Microphone XMT Selection There are six pushbuttons associated with the communications transceivers The lower buttons...

Page 21: ...sh button backlit switches You will always hear the audio from the transceiver that is selected for transmit The users can identify which receivers are selected by noting which of the green switch LEDs are illumi nated Push buttons labeled Nav 1 Nav 2 MKR Marker ADF DME AUX auxiliary and SPR Speaker are momentary type switches When one of these buttons is pressed be active and the LED will illumin...

Page 22: ...ntelliVox squelch control is necessary There is no field adjustment Through three individual signal processors the ambient noise appearing in all six microphones is constantly being sampled Non voice signals are blocked When someone speaks only their microphone circuit opens placing their voice on the intercom The system is designed to block continuous tones therefore people humming or whistling i...

Page 23: ...he MONO mode on the headset Honeywell modi fies headsets to add stereo capability using high fidelity speakers Contact factory for details 3 6 3 Intercom Modes The lower switch on the left side is a 3 position mode switch that allows the pilot to tailor the intercom function to meet the current cockpit situation best The description of the intercom mode function is valid only when the unit is not ...

Page 24: ...s or if the aircraft radio becomes active the music will automatically mute and then will gradually return to the original listening level when the intercom or radio conversation ceases When in the ALL mode pilot and copilot will hear Entertainment 1 input while all passengers will hear the Entertainment 2 source While in the CREW mode pilot and copilot will hear entertainment input 1 while the pa...

Page 25: ... KMA 28B can serve as a audio control and distribution center Each intercom position has a hook switch The pilot s hook switch is the Com 3 button on the audio panel the others are discrete switches mounted adjacent to the headset jacks When Com 3 is active in the duplex mode the TX button will blink about twice as fast as the normal transmit rate When the intercom is in ALL mode the pilot can spe...

Page 26: ...ton switch To adjust the volume level there is a service adjustment located on the top of the unit A three position switch is used to set the receiver sensitivity and to test the indicator lamps Use HI sen sitivity initially This allows you to hear the outer marker beacon about a mile out Then select the LO sensitivity to give you a more accurate location of the Outer Marker The momentary down swi...

Page 27: ... 6 31in 160 3 mm Cutout size for front mount installation 1 315 in 33 4 mm 6 28 in 159 5 mm 3 00 in 76 2 mm CG Weight 1 5 lb with tray and connectors 68 kg Side View Rear View 6 65 in 167 mm J1 bottom J2 top Z Y X W V U T S R P N M L K J H F E D C B 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 A 1 Connector viewed from the rear Z Y X W V U T S R P N M L K J H F E D C B 22 21 20 19 18 17 ...

Page 28: ...parate and connected to pin 22 4 All Power and Ground wires must be 18 gage wire Lighting 22 AWG other wires minimum 24 AWG 5 Pilot mic and headphone jacks must be isolated from ground 6 Pin 20 connected through a 3 A breaker 7 PA Mute is a TTL level logic output that is pulled low when PTT active 8 Speaker loads may be required on some transceivers Consult transceiver manufacturer s information 9...

Page 29: ...en pin 18 is switched to ground the PA mode is activated placing pilot microphone on speaker output when PTT active See Sect 2 4 10 2 3 B Copilot Phones L Copilot Phones R Copilot Phones Lo Pilot Phones L see bottom connector 12 11 Pass Phones L Pass Phones R Pass Phones Lo Pass 1 Mic Jack Pass Mic Lo Pass Mic Hi Pass 1 PhonesJack 5 E Pass 2 Mic Jack Pass Mic Lo Pass Mic Hi Pass 2 Phones Jack 6 F ...

Page 30: ...raft records All work accomplished listed on Work Order 7 2 Instructions for Continuing Airworthiness Audio System Sample ICA Checklist for Honeywell Audio System Section Item Information 1 Introduction Installation of audio control panel with integrated marker beacon receiver and intercommunications system 2 Description Installation as described in manufacturer s installation manual referenced on...

Page 31: ... Equipment tested to Category A Shock 7 0 Equipment tested to Operational test only Operational 7 2 Equipment tested to Operational test only Crash Safety 7 3 Equipment tested to Operational test only Vibration 8 0 Equipment tested to Category M N Explosion 9 0 Category X not tested Waterproofness 10 0 Category X not tested Fluids Susceptibility 11 0 Category X not tested Sand and Dust 12 0 Catego...

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