SM19 - Northern Airborne Technology
Contents
1. 38 1 MAX NAVI NAV2 ADF DME MKR AAAA N N 909099 COM COM2 FM1 FM2 AUX 1 90 48 3 4 CENTER OF GRAVITY 5 77 146 6 MAX NOTES 1 DIMENSIONING AND TOLERANCING A ASCER CONFIDENTIAL AND PROPRIETARY TO LTD DIMENSIONS DESIGNED ARE INCHES mm DRAWN OE poi DUAL CHANNEL CHECKED AUDIO CONTROLLER 2 79 Ibs 1 27 Kg MAX SIZE CAGE CODE PART NO REV SHEET CHROMATE CONVERSION FILE 922 0 DWG DWG MECH INSTALLATION DWG NO AMS44 922 0 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual Section 3 0 Operation This section is divided to provide model specific Operational instructions Operation Instructions for the AMS42 can be found in Sections 3 1 to 3 6 Operation Instructions for the AMS44 can be found in Sections 3 7 to 3 12 3 1 AMS42 General Operation RX ON ES RX ON 9 ICS 112200002 UX ICS ZS EMER A Ar VOL AMS42 provides one central controller for all the aircraft audio allowing selection of transmit and receive audio LIVE KEYED or VOX intercom in2. ICS Mode Control set fully counter clockwise into the switch detent LIVE Hot Mic Operation ICS Mode Control set fully clockwise VOX Voice Activated ICS Mode Control set fully clockwise then slowly rotated counter clockwise until the intercom just becomes quiet This setting will vary with ambient noise conditions and the quality and number of microphones connected in the system KEYED operation is inherent to the pilot and copilot microphone circuits only 3 5 2 Passenger ICS Operation Passenger ICS audio is LIVE when the controller is in the LIVE or KEYED mode of ICS operation and are VOX triggered when a VOX setting is selected Note that the passengers are always LIVE unless interrupted by an in line PTT cord or the controller is set for VOX operation Passenger and copilot observer operations can be maximized by using PTT type cord assemblies designed for use with NAT audio controllers CAUTION Ensure that all PTT type cord assemblies have properly shielded mic and phone wiring or crosstalk will occur Nov 21 2003 Page 3 5 ENG FORM 806 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMS42 44 Dual Channel Audio Controller Manual SM19 Rev 4 00 3 6 AMS42 Mode Control The Mode Control switch is a three position locking toggle switch that is used to select between ISO EMER OPER and NORM It is
3. 28 VDC LIGHTS 0 ALO w U XD AMM O WCXS O OC 0m 09 0 wcz 1 4 12 14 16 17 18 19 O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 RECEIVE AUDIO INPUTS FROM RADIOS PHN OUTPUT AMNC ATOM mnmr O lt A AMNC A4rnmr Or 0 amp xU 28 VDC POWER x AMNNC ALO D ic x 0000 CA MIC KEY OUTPUT TO RADIOS 74mnmr NOTE DO GROUND HEADSET COMMONS ROM REAR OF AIRFRAME CONNECTOR CONFIDENTIAL AND PROPRIETARY TO NAT LTD m SK net NORTHERN AIRBORNE TECHNOLOGY LTD DRAWN MWS DATE FEB 22 96 DUAL CHANNEL CHECKED AUDIO CONTROLLER SIZE CAGE CODE PART NO REV SHEET ARPROVED 3ABO1 542 1 01 1 1 FILE 405 0101 DWG DWG TYPE CONNECTOR MAP DWG NO AMS42 405 0 REVISIONS REV DESCRIPTION DATE 1 01 FORMAT CHANGES DRAWING CORRECTIONS MAR 21 96 KEYED LIVE 1 oo D AUX ISO AUX SS MENS Da AS We Confidential and Proprietary to N
4. yk T RIGHT USER JACK gt lt LEFT USER JACK EFT USER MIC HI EFT USER MIC LO 2260 RIGHT USER TX SW RIGHT USER TX KEY RIGHT USER ICS SW HT USER ICS KEY LEFT USER TX SW LEFT USER TX KEY LEFT USER ICS SW EFT USER ICS KEY PAX 1 MIC HI PAX 1 MIC LO PAX 1 PHN PAX 1 PHN PAX 2 MIC PAX 2 MIC PAX 2 PHN PAX 2 PHN PAX 3 MIC PAX 5 3 5 4 4 4 4 5 PAX 5 Li 5 Pee PCE 20 2 P 15 AA20 AA22 25 PA SYSTEM PA K PA MIC PA MIC Le lt e AUDIO BREAKER 28 VDC POWER 28 VDC POWER POWER GROUND A C GROUND CONFIDENTIAL AND PROPRIETARY TO NAT LTD a nat NORTHERN AIRBORNE TECHNOLOGY LTD DATE JUL 27 90 DUAL CHANNEL CHECKED AUDIO CONTROLLER SIZE CAGE CODE PART NO REV SHEET APPROVED 1 42 1 11 2 3 FILE 403 0111 DWG DWG INTERCONNECT DWG NO AMS42 403 1 102 542 4102 3 7 FEMALE DMIN 28 VDC LIGH LIGHTS
5. 1 46 0 03 37 2 0 8 NAVI NAV2 ADF DME COM COM2 FM1 FM2 AUX Z lt NAVI NAV2 ADF DME MKR 9000007 AUX COM COM2 FM 2 N ZZ ICS VOL ASS ote AN ES 1 88 47 8 TOLERANCES UNLESS STATED OTHERWISE 0 X 0 030 0 XX 0 010 0 0 005 0 002 ANGLE 0 5 DEG MATERIAL FINISH 5 75 146 1 WEIGHT 2 66 Lbs 1 2 kg 4 CENTER OF GRAVITY Confidential and Proprietary to NAT DIMENSIONS DESIGNED IN INCHES THIRD ANGLE ROJECTION DATE rer CHECKED DUAL CHANNEL AUDIO CONTROLLER APPROVED AT REV 1 00 AGE CODE 1 544 SHEET 1 1 SIZE C A FILE 922 0100 DWG DWG TYPE MECH INSTALLATION DWG NO AMS44X922 0 REVISIONS DESCRIPTION DATE DOCCRO0934 CHANGED CAUTION LABEL UPDATED FORMAT SEP 14 04 5 02 127 5 MAX _ 0 94 23 9 EST 2 50 63 5 EST DIR AUDIO 2 LEFT USER RIGHT USER RX RX a O UC gt 2 0 ICS ISO CO 4 LEFT USER S T RIGHT USER S T CAUTION LABEL MISC PRODUCT LABEL
6. Manual Amendment ends after the following amended pages Amendment 2 Feb 15 2005 ENG FORM 809 0109 DOT Page 1 CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD INSTALL_OPS MANUAL AMENDMENT The purpose of this amendment is to add the most recent Installation Drawings to the manual Amendment Instructions 1 Replace With Pages 2 i AMS42 403 0 Rev 1 11 AMS42 403 1 Rev 1 11 AMS42 403 2 Rev 1 11 AMS42 405 0 Rev 1 01 AMS44 403 0 Rev 1 03 AMS44 403 1 Rev 1 03 AMS44 403 2 Rev 1 03 AMS44 405 0 Rev 1 02 zs Note Ensure that all drawings are inserted in the order shown on the latest drawing lists 3 Update the Amendment Record sheet at the front of the manual 4 Insert this page into the manual after the Amendment Record sheet page ii Manual Amendment ends after the following amended pages Amendment 1 Jul 30 2004 Page 1 ENG FORM 809 0107 DOT PROPRIETARY AND CONFIDENTIAL TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual Table of Contents Section Title Page 1 0 Description 1 1 Introduction 1 1 1 2 Purpose of Equipment 1 1 1 3 Design Features 1 1 1 3 1 Transmit Functions 1 1 1 3 2 Receive Functions 1 2 1 3 3 ICS Functions 1 2 1 4 Specifications 1 2 1 4 1 Electrical Specifications 1 2 1 4 2 Physical Specifications 1 3 1 4 3 Environmental Specifications 1 3 1 5 Unit Nomenclature 1 4 2 0 Installation
7. INSTALL_OPS MANUAL AMENDMENT The purpose of this amendment is to add the latest drawings to the manual Amendment Instructions 1 Remove Pages Replace With Pages 2 7 Rev 4 00 Amendment 2 2 7 Rev 4 00 Amendment 3 A A 2 Remove Drawings Section 2 Replace or add Drawings Section 2 5421922 0 Rev 1 10 AMS44 905 1 Rev 1 02 AMS44 905 0 Rev 1 03 AMS44 922 0 Rev 1 10 3 Update the Amendment Record sheet at the front of the manual 4 Insert this page into the manual after the Amendment Record sheet page ii Manual Amendment ends after the following amended pages Amendment 3 May 27 2008 Page 1 ENG FORM 809 0109 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD INSTALL OPS MANUAL AMENDMENT Manual SM19 AMS42 44 Amendment 2 Document SM19 Install_Ops 809 0002 Amendment Date Feb 15 2005 The purpose of this amendment is to add a wiring note to the Cautions section of the manual to insert the latest wiring specifications and to add Install Kit information Amendment Instructions 1 Replace with Pages Title section page iii Rev 4 00 Title section page iii Rev 4 00 Amendment 2 2 1 and 2 2 Rev 4 00 2 1 and 2 2 Rev 4 00 Amendment 2 2 7 Rev 4 00 2 7 Rev 4 00 Amendment 2 AAA 2 Update the Amendment Record sheet at the front of the manual 3 Insert this page into the manual after the Amendment Record sheet page ii
8. 2 1 General 2 1 2 2 Unpacking and Inspection 2 1 2 3 Continued Airworthiness 2 1 2 4 Installation Procedures 2 1 2 4 1 Warnings 2 1 2 4 2 Cautions 2 2 2 4 3 Cable and Wiring 2 2 2 5 Adjustments and Connections 2 2 2 5 1 Top panel adjustments 2 3 2 5 2 Right Side Adjustments 2 4 2 5 3 Left Side 2 5 2 5 4 Post Installation Checks 2 6 2 5 5 Accessories Required But Not Supplied 2 6 2 6 Installation Drawings 2 7 ENG FORM 820 0109 DOT Amendment 2 Feb 15 2005 CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual 3 0 Operation 3 1 AMS42 General Operation 3 1 3 2 AMS42 Audio Alerting Functions 3 1 3 3 AMS42 Selection of Transmit Functions 3 2 3 3 1 Transmit Selectors 3 2 3 3 2 Hand Microphone 3 2 3 4 AMS42 Transceiver Receive Functions 3 3 3 4 1 Receive Selection Switches 3 3 3 4 2 Transceiver Selection Examples 3 3 3 4 3 Volume Controls 3 4 3 4 4 Passenger Receive Audio Selection 3 4 3 4 5 Auxiliary Inputs 3 4 3 5 AMS42 Intercom Functions 3 4 3 5 1 ICS Modes of Operation 3 5 3 5 2 Passenger ICS Operation 3 5 3 6 AMS42 Mode Control 3 6 3 6 1 Emergency Operation 3 6 3 6 2 Isolation Operation 3 6 3 7 AMS44 General Operation 3 7 3 8 AMS44 Audio Alerting Functions 3 7 3 9 AMS44 Selection of Transmit Functions 3 8 3 9 1 Transmit Selectors 3 8 3 9 2 Hand Microphone 3 9 3 10 AMS44 Transceiver Receive Functions 3 9 3 10 1 Receive Sel
9. A A ZA TO BE USED FOR EXPANSION OF INTERCOM SYSTEM ONLY REFER TO INSTALLATION MANUAL FOR DETAILS DEFINITIONS N C O CONNECTION THE PIN IS NOT CONNECTED TO ANYTHING TERNALLY AND THEREFORE SHALL HAVE NO CONNECTION EXTERNALLY N C SPARE O CONNECTION INTERNALLY BUT A SPARE WIRE SHALL BE STALLED IN THE WIRE HARNESS RESERVED AY BE CONNECTED AND USED IN THE FUTURE THE CIRCUITRY MAY BE PRESENT OR ADDED TO THE FUNCTION IHE PIN MAY BE USED FOR TEST PURPOSES THERE IS NO EXTERNAL CONNECTION RESERVED SPARE RESERVED BUT INSTRUCTIONS SHALL BE FOLLOWED TO ACTIVATE RSV SP THE CIRCUITRY SPARE WIRE SHALL BE INSTALLED IN THE WIRE HARNESS CONFIDENTIAL AND PROPRIETARY TO NAT LTD arena NORTHERN AIRBORNE TECHNOLOGY LTD DATE DUAL CHANNEL CHECKED AUDIO CONTROLLER SIZE CAGE CODE PART NO REV SHEET APPROVED 3AB01 42 1 11 11 3 FILE 403 0111 DWG DWG INTERCONNECT DWG NO AMS42N403 0 P101 J101 50 PIN FEMALE DMIN MATING CONNECTOR 2 2 2 COM 2 MIC HI COM 2 MIC LO gt al COM 1 KEY COM 1 MIC HI COM 1 MIC LO AUX KEY AUX MIC HI AUX MIC LO FM 1 KEY FM 1 MIC HI FM 1 MIC LO FM 2 KEY FM 2 MIC HI FM 2 MIC LO REAR HAND KEY REAR HAND MIC HI e REAR HAND MIC LO RIGHT USER MIC HI RIGHT USER MIC LO T T t RE t
10. COM 2 RX COM 2 RX COM 2 COM 1 RX COM 1 RX AUX RX AUX RX FM 1 RX FM 1 RX FM 2 RX FM 2 RX L NAV 1 RX H NAV 1 RX NAV 2 RX H 2 RX L ADF 1 RX ADF 1 RX ADF 2 RX ADF 2 RX L AUX 1RX H AUX 1 RX L AUX 2 RX AUX 2 RX AUX 2 DIRECT AUDIO 2 H DIRECT AUDIO 2 ALERT 2 MODULE HI ALERT 1 LO MODULE RECT AUDIO 1 AUDIO 1 L USIC LEFT RX MUSIC LEFT RX MUSIC RIGHT RX MUSIC RIGHT RX L RX L LO MUSIC R RX PLAYER R LO gt kp ko Kb kp kp lo lo lo kb kb Kb Kb kb 3 FS lii 9 il 9 K K E ii RIGHT USER PH PHN RIGHT USER RIGHT USER LO JACK x PX LEFT USER PHN LEFT USER LEFT USER LO JACK A ICS 1 HI ICS ICS TIE LO EXPANSION gt C CONFIDENTIAL AND PROPRIETARY TO NAT LTD mu ly Seb NORTHERN AIRBORNE TECHNOLOGY LTD DATE JUL DUAL CHANNEL CHECKED AUDIO CONTROLLER Y CAGE CODE PART NO SHEET APPROVED 42 Ps P 3 3 FILE 403 0111 DWG DWG TYPE INTERCONNECT DWG NO AMS42N403 2 P102 37 PIN FEMALE DMIN MATING CONNECTOR FEMALE DMIN G CONNECTOR REVISIONS DESCRIPTION DATE ECR 598 REFER TO ECR MAR 18 03
11. FM 2 KEY FM 2 MIC HI FM 2 MIC LO REAR HAND KEY REAR HAND MIC HI REAR HAND MIC LO RIGHT USER MIC HI RIGHT USER MIC LO REAR HAND MIC MIC RIGHT USER LO JACK MIC LEFT USER LO JACK LEFT USER MIC HI LEFT USER MIC LO AE an RIGHT USER RIGHT USER TX KEY RIGHT USER RIGHT USER ICS KEY LEFT USER LEFT USER TX KEY LEFT USER LEFT USER ICS KEY gt gt PAX 1 MIC HI PAX 1 MIC LO PAX 1 PHN PAX 1 PHN PAX 2 MIC PAX 2 MIC Li PAX 2 PHN PAX 2 PHN PAX 3 M PAX 3 MIC PAX 3 PH PAX 3 PHN PAX 4 4 10 4 4 gt 5 5 5 Fr OC DC DC D PA PA M PA MIC PA SYSTEM eco kb eco k l AUDIO BREAKER 28 VDC POWER AT 428 VDC POWER POWER GROUND A C GROUND PROPRIETARY AND CONFIDENTIAL TO NAT LTD DESIGNED DRAWN DATE DUAL CHANNEL NAF PROD AUDIO CONTROLLER 223 1 SIZE CAGE CODE PART NO REV SHEET APPREND 3AB01 AMS44 1 03 2 3 FILE 403 0103 DWG DWG INTERCONNECT DWG NO 544 403 1 102 J102 37 PIN FEMALE DMI
12. except for the RX and ICS volume controls which will have no effect Any selected receive audio is switched to the appropriate user in the emergency mode red mode switch in the EMER position but not to any passengers in the system Level will be lower than NORM operation because the signals are obtained directly from the radios bypassing the electronics in the controller This is provided for failure situations which make operation impossible in the NORM mode i e loss of power or amplifier failure etc 3 6 2 Isolation Operation The mode switch can select an ISO function which prevents the selected user from receiving ICS audio This is useful when passengers are interfering with critical flight operations landing etc It can be preselected at installation to isolate the left or right side Intercom operation for the passengers and copilot is not affected It is normally set for isolation of the right side when the unit is shipped from the factory Page 3 6 Nov 21 2003 ENG FORM 806 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual 3 7 AMS44 General Operation NAV1 ADF DME a NAV1 ADF DM MKR 888538 PELOS COM2 FM1 FM2 AUX 1 FM2 QUO 544 35 nat ICS VOL ISO PA A OPER NORM
13. 24 AWG except power and ground lines which should be at least 20 AWG Ensure that the ground connection is clean and well secured and that it shares no path with any electrically noisy aircraft accessories such as blowers turn and bank instruments or similar loads Power to this unit must be supplied from a separate breaker 1 Amp or fuse 1 Amp fast blow and not attached to any other existing breaker without additional protection Before the unit is mounted make all functional tests and trimpot adjustments Be sure the harness has enough clearance to permit the unit to be dropped down for re adjustment if needed later Make sure that the connector locks are tightened and the unit is securely fastened to the panel before any flight is attempted 2 5 Adjustments and Connections The unit ships from the factory with all internal adjustments set to the normal test levels Once installed in the aircraft it may be desirable to change some of these settings to best suit the local operating environment The internal adjustments are located on the top and sides of the unit and are as follows Page 2 2 Nov 21 2003 ENG FORM 805 0102 DOT Amendment 2 Feb 15 2005 CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMS42 44 Dual Channel Audio Controller Manual 5 19 4 00 2 5 1 Top panel adjustments 2 5 1 1 Receive Selection Switches AMS42 The receive selection switches for the navaids are two banks of rocker switche
14. 420 5 2131415 617 91011 1213 14 15 16 17 18 19 O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20 1212223 24 25 26 27 28 29 50 31 32 33 34 35 36 37 RECEIVE AUDIO INPUTS FROM RADIOS PHN mr P101 N FEMALE DMIN G CONNECTOR gt AMUC ATM AMNC lt A HFA O 0 x gt U O 0 0 gt 28 VDC POWER lt A AMNC HITO NO 54 35 36 37 38 39 40 4 0 0 0 0 0 0 MIC KEY OUTPUT TO RADIOS Twnmr OUZCODO oO ALO wD NOTE DO NOT GROUND HEADSET COMMONS OM REAR OF AIRFRAME CONNECTOR PROPRIETARY AND CONFIDENTIAL TO NAT LTD a ak nat NORTHERN AIRBORNE TECHNOLOGY LTD DATE MAY 16 90 DUAL CHANNEL NAP PROD AUDIO CONTROLLER 105 IF SIZE CAGE CODE PART NO REV SHEET m AMS44 1 02 1 1 FILE 405 0102 DWG DWG CONNECTOR MAP DWG NO AMS44 405 0 DESCRIPTION DATE FORMAT CHANGES DEC 7 95 ENGRAVE LAYER ADDED MAY 1 96 2373 AMS44 TEXT ALIGNED WITH SWITCH LEGENDS FORMAT CHANGES APR 27 06 AMS44 COM1 COM2 FM
15. 44 series are designed to be generic fixed attribute audio controllers For this reason a limited number of models is available Custom dual channel audio controllers based on the AMS42 are renamed AA92H series and units based on the AMS44 are renamed AA94 series The models available are AMS42 5 front panel selectable transceivers 8 internal selectable RX inputs 2 Direct Audio Inputs AMS42F Same as AMS42 with faceplate labeling change from COM2 to AUX1 to match OAS USFS requirements AMS42T 42 in tray mount configuration AMS42FT Combines F and T models AMS44 5 front panel selectable transceivers 5 front panel selectable navaids 2 internal selectable RX inputs 2 Direct Audio Inputs AMS44T 544 in tray mount configuration End of Section 1 0 Page 1 4 Nov 21 2003 ENG FORM 800 0103 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMS42 44 Dual Channel Audio Controller Manual 5 19 Rev 4 00 Section 2 0 Installation 2 1 General Installation information in this section consists of unpacking and inspection procedures installation procedures post installation checks and installation drawings Check all notes and cautions before installation 2 2 Unpacking and Inspection Unpack the equipment carefully and locate the warranty card Inspect the unit visually for damage due to shipping and report all such claims immediately to the carrier involved Note that each comple
16. Pin D min Female Crimp Kit D50SL IKC and 1 37 Pin D min Female Crimp Kit D37SL IKC D50SL IKC consists of Quantity Description NAT Part 1 D min 50 Socket Housing 20 21 050 50 MS Crimp Socket 20 26 901 1 Jack Screw Set 20 27 002 1 Lock Clip Set 20 27 004 1 50 Pin Connector Hood 20 29 051 D37SL IKC consists of Quantity Description NAT Part 1 D min 37 Socket Housing 20 21 037 37 MS Crimp Socket 20 26 901 1 Jack Screw Set 20 27 002 1 Lock Clip Set 20 27 004 1 37 Pin Connector Hood 20 29 038 Use as required 2 6 Installation Drawings DRAWING REV DESCRIPTION TYPE SERIAL No AMS42 AMS42 403 0 1 11 542 Dual Channel Audio Controller Interconnect All AMS42 403 1 111 542 Dual Channel Audio Controller Interconnect All AMS42 403 2 1 11 542 Dual Channel Audio Controller Interconnect All AMS42 405 0 1 01 542 Dual Channel Audio Controller Connector Map All AMS42 905 0 1 01 AMS42 Dual Channel Audio Controller Faceplate All AMS42 922 0 1 00 AMS42 Dual Channel Audio Controller Installation Diagram Up to 2445 AMS42 922 0 1 10 542 Dual Channel Audio Controller Installation Diagram 2446 and up AMS44 AMS44 403 0 1 03 544 Dual Channel Audio Controller Interconnect All AMS44 403 1 1 03 544 Dual Channel Audio Controller Interconnect All AMS44 403 2 1 03 AMS44 Dual Channel Audio Controller Interconnect All AMS44 405 0 1 02 AMS44 Dual Channel Audio Controller Connector Map All AMS44 905 0 1 03 542 Dual Ch
17. The AMS44 provides one central controller for all the aircraft audio allowing selection of transmit and receive audio LIVE PTT Keyed or VOX intercom interface for an additional handheld transmit microphone hand mic and pilot copilot isolation emergency operation Typical definition of the unit has the pilot on the right side of the controller and the copilot and passengers on the left side This can be easily re configured at the time of installation for alternate seating arrangements Individual control over receive and transmit functions are provided for both the pilot and copilot observer and a common control is provided for LIVE PTT and VOX ICS operation An additional control is provided for NORMAL EMERGENCY or ISOLATE pilot cut off from ICS audio operation Sidetone S T level is adjustable internally and Receive RX and Intercom ICS levels are adjustable on the front panel All audio except the S T of the radio IN USE and any Type B DIRECT AUDIO input signals are muted during transmit for clarity ICS operation allows transmit during any ICS mode by using the PTT switch 3 8 AMS44 Audio Alerting Functions No internal audio alerting is provided in the AMS44 Two direct unswitched inputs are provided to allow airframe alerting signals to be routed to the pilot See 3 10 5 Auxiliary Inputs for more information DIR AUD 1 is amplified by the Audio controller and can not be heard when the Mod
18. critical flight operations landing etc It can be preselected at installation to isolate the left or right side Intercom operation for the passengers and copilot is not affected It is normally set for isolation of the right side when the unit is shipped from the factory End of Section 3 0 Nov 21 2003 Page 3 13 ENG FORM 806 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD
19. have to be adjusted for correct balance for the pilot and copilot Adjustment of the individual radio RX levels should be set first then the front panel RX master volume control Unusual buzzes hums or other background audio are symptomatic of multiple grounds or noisy external systems sharing the same wire bundle Note that incorrect jack wiring is a common fault especially for passenger stations and may cause loss of audio a tone on the headset lines or other problems Failure to key or correctly modulate a transceiver may be caused by missing grounds on the radio or audio controller Plug in the hand mic and test for correct operation Note that wiring faults for this accessory may cause peculiar loss of ICS or TX functions because it has over riding priority in the system Plug in the remaining headsets and check for proper operation Note an incorrect drop cord or improper jack wiring may cause a wide range of problems from loss of audio to a tone heard in the headset Check levels and operation of all functions in flight to ensure proper adjustments and settings have been made Page 2 6 Nov 21 2003 ENG FORM 805 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMS42 44 Dual Channel Audio Controller Manual 2 5 5 Accessories Required But Not Supplied SM19 Rev 4 00 Installation kit AA90 IKC Alt part D50S37SL IKC is required to complete the installation The kit consists of 1 50
20. identified with a red cap 59299066986 AMSA2 COM 7 FM2 FM2 gfe NET KEYED LIVE CS VOL Ps e N TX EMER A OPER TX N 8 220 PA NORWN OW Mode Control Switch AUX ISO AUX 3 6 1 Emergency Operation The center EMER OPER position of the mode switch places the controller into the emergency operation mode When switched to the EMER OPER position both pilot and copilot controls are removed from the ICS bus and connected directly to their respective radios This mode should be selected in the event of a box fault or power failure The Emergency function should be tested prior to flight to assure proper operation and allow the radio levels to be set adequately for emergency operation 3 6 1 1 Emergency Mode Effects In the EMER mode all functions are retained by the pilot and copilot except ICS and possibly boom mic operation If the box or airframe fault prevents the TX annunciator from lighting during transmit indicating a failure in the mic keying circuit then the hand mic should be used A power fault of any kind will prevent the TX annunciator from lighting giving an immediate indication of failure If ICS audio is still available then the power to the controller has not failed and loss of the TX light indicates TX switch failure Note that in the EMER mode all switches work exactly as they do during NORM operation
21. the setting of the internal PAX switch accessible through the right side of the controller The passengers will not hear any radio audio when the red mode switch is in the EMER position Page 3 10 Nov 21 2003 ENG FORM 806 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual 3 10 5 Auxiliary Inputs Two Direct Audio inputs are available They are coupled directly to either the left or right side of the controller at the time of installation The Direct Audio inputs are normally selected for the right side of the controller when the unit is shipped from the factory 3 11 AMS44 Intercom Functions All ICS audio is controlled by the front panel ICS volume controls and may be varied to suit conditions There are independent volume controls for the left and right sides of the controller The ICS VOL are the larger aft controls of the dual concentric volume control assemblies See also section 3 10 3 2 If the controller is operated in the emergency mode ICS operation will continue if there is no fault condition between the passengers but not between the pilot and copilot or passengers 3 11 1 ICS Modes of Operation Intercom system ICS audio may be implemented in three modes between users LIVE on constantly VOX voice activated or PTT active only when switched by ICS PTT switch The ICS mode is selected by the control labeled ICS in t
22. 1 FM2 AUX PA EM PT 2 FM2 LIVE 23 E nat ISO ICS VOL AS A OPER 52 ICS VOL NAV1 NAV2 ADF DME NAV1 NAV2 ADF DME MKR ES AUX T FM CONFIDENTIAL AND PROPRIETARY TO NAT LTD m K O NORTHERN AIRBORNE TECHNOLOGY LTD DATE JUN 2 93 DUAL CHANNEL AUDIO CONTROLLER CHECKED FRONT VIEW SIZE CAGE CODE PART NO REV SHEET 552 3AB01 AMS44 1 03 1 3 FILE 905 0 DWG DWG TYPE FACEPLATE DWG NO AMS44N905 0 ENG FORM 905 s AA94 xxx 905 0110 DWT 5 00 127 0mm 2 50 63 5mm 0 94 23 9 DIR AUDIO 2 CAUTION Note LEFT USER RIGHT USER RX RX 5 passenger ction additions O UC gt 2 0 ovs NORTHERN AIRBORNE TECHNOLOGY MODEL SERIAL WEIGHT LTD DATE MADE IN CANADA ICS ISO 3 90 99 1mm S 6 77 172 0mm LEFT USER S T RIGHT USER S T 213 6 mm 1 3mm 0 05 8 41
23. AND ENTERTAINMENT SYSTEM WILL BE REQUIRED FOR MOD 9 UNITS ONLY THESE ARE N C FOR ALL OTHER UNITS gt USED FOR EXPANSION OF INTERCOM SYSTEM ONLY REFER TO INSTALLATION MANUAL FOR DETAILS DEFINITIONS N C CONNECTION THE PIN IS NOT CONNECTED TO ANYTHING INTERNALLY AND THEREFORE SHALL HAVE NO CONNECTION EXTERNALLY N C SPARE CONNECTION INTERNALLY BUT A SPARE WIRE SHALL BE INSTALLED IN THE WIRE HARNESS RESERVED AY BE CONNECTED AND USED IN THE FUTURE HE CIRCUITRY MAY BE PRESENT OR ADDED TO ACTIVATE THE FUNCTION HE Pl AY BE USED FOR TEST PURPOSES HERE 15 NO EXTERNAL CONNECTION RESERVED SPARE RESERVED BUT INSTRUCTIONS SHALL BE FOLLOWED TO ACTIVATE RSV SP THE CIRCUITRY SPARE WIRE SHALL BE INSTALLED IN THE WIRE HARNESS PROPRIETARY AND CONFIDENTIAL TO NAT LTD lt ak nat NORTHERN AIRBORNE TECHNOLOGY LTD DATE DUAL CHANNEL AUDIO CONTROLLER El SIZE CAGE CODE PART NO REV SHEET APPROVED 3AB01 AMS44 1 03 1 3 FILE 403 0103 DWG DWG INTERCONNECT DWG NO AMS44 403 0 P101 50 PIN FEMALE DMIN MATING CONNECTOR 2 2 COM 2 KEY COM 2 MIC HI COM 2 MIC LO y ai COM 1 KEY COM 1 MIC HI COM 1 MIC LO AUX FM KEY AUX FM MIC HI AUX FM MIC LO FM 1 FM 1 MIC HI FM 1 MIC LO ok T LO EY MIC LO KEY MIC LO
24. AT ak nat NORTHERN AIRBORNE TECHNOLOGY LTD DATE DEC 17 90 TITLE DUAL CHANNEL CHECKED A AUDIO CONTROLLER A SIZE CAGE CODE PART NO REV SHEET AMS42 1 01 1 2 FILE 905 0101 DWG DWG TYPE FACEPLATE DWG NO AMS42N905 0 5 00 2 50 127 0mm 63 5mm DIR AUDIO 2 CAUTION Note 5 passenger connection additions LEFT USER RIGHT USER RX RX O UC gt 2 0 odo NORTHERN AIRBORNE MODEL SERIAL WEIGHT TECHNOLOGY vm DATE MADE IN CANADA KELOWNA B C ICS ISO C 99 1mm 3 90 6 172 0mm 6 77 0 i 1 46 0 05 37 2mm20 8mm 47 8mm 1 88 0 94 23 9 LEFT USER S T RIGHT USER S T 8 41 0 05 213 6mm 1 3mm WEIGHT 2 30 16 ENT ER OF GRAVITY Confidential and Proprietary to NAT TOLE
25. COM2 FM2 AUX EN AUX COM COM2 1 2 FM ve ISO PA D 2 544 Transmit Selector at COM2 Volume Controls RX and ICS VOL 3 10 3 Volume Controls The controller features individual master RX and ICS VOL controls on both the left and right sides of the unit which can be adjusted to suit the specific user s requirements 3 10 3 1 RX Volume Control The RX knobs are the smaller topmost controls of the dual concentric volume control assemblies The RX VOL controls provide adjustment of the RX audio selected by the controller from 10 to full As in any audio system it is important to set the individual radio volume controls to a nominal level that is acceptable to both pilots then adjust the respective master RX VOL on the audio controller to suit user preference The RX VOL controls are designd to provide a minimum level even when set fully ccw All receive audio is muted during transmit NORM and ISO mode 3 10 3 2 ICS Volume Control The ICS VOL knobs are the larger bottom controls of the dual concentric volume control assemblies The ICS VOL controls provide adjustment of the ICS audio selected by the controller The ICS volume controls provide adjustment from 0 to full output See also section 3 11 3 10 4 Passenger Receive Audio Selection The passengers normally hear the radio audio as selected on the left side of the controller The passengers can be shifted to the right side by changing
26. CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual 2 9 1 2 DIR AUDIO Inputs These are coupled directly to either the Right User P or Left User C of the controller by jumpers accessible through the top cover and labeled DIR AUDIO 1 or DIR AUDIO 2 The factory setting is for coupling to the Right User Coupled to Right User Coupled to Left User Ov Coupled Right User Y Coupled to Left User Couplings for DIR AUDIO 1 Couplings for DIR AUDIO 2 2 5 1 3 Intercom Isolation ICS ISO The front panel mode switch can be used to isolate either the left copilot or right pilot user by using the jumper labeled ICS ISO which is accessible through the top cover It is normally set for isolation of the right user when the unit is shipped from the factory Coupled to Left User Coupled to Right User 2 5 2 Right Side Adjustments 2 5 2 1 Sidetone LEFT USER S T and RIGHT USER S T The Left User and Right User transmit sidetone S T can be adjusted using the pots accessible through the right side of the case Rotating the pots clockwise increases the sidetone and counterclockwise reduces it 2 5 2 2 ICS TIE LEVEL This factory preset pot may be covered by an adhesive disc to prevent field adjustment Under normal operation this pot does not need to be adjusted Any adjustment should be
27. DENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMS42 44 Dual Channel Audio Controller Manual SM19 Rev 4 00 3 3 42 Selection of Transmit Functions PES RX ON 90000000 COM E FMI rFM2 Owe AUX ISO AUX Cte EMER A OPER N PA Q PA Transmit Left User Co pilot Right User Pilot Transmit Annunciator Transmit Selector Transmit Selector Annunciator 3 3 1 Transmit Selectors The transmit selector controls are six position rotary switches one on each side of the panel to correspond to the user on that side of the aircraft The controls select the transmit function required by the relevant user Each rotary selector switch is completely independent of the other and the pilot and copilot have equal priority during transmit When the PTT is activated all audio selected on the side of the controller that is transmitting is muted except the sidetone of the transceiver in use 3 3 1 1 Automatic Receive Audio Receive audio is automatically selected as a function of the respective rotary selector switch No additional switching is needed to establish external communication 3 3 1 2 Transmit Annunciators During transmit from either the pilot or copilot position the appropriate TX annunciator green will light on the front panel 3 3 1 3 TX Selector Example In the figure above the positions of the rota
28. N N MATING CONNECTOR 28 VDC LIGH LIGHTS COM 2 RX COM 2 RX COM 2 COM 1 RX COM 1 RX Li AUX FM RX AUX FM RX Li FM 1 RX FM 1 RX FM 2 RX FM 2 RX NAV 1 RX NAV 1 RX NAV 2 RX NAV 2 RX L ADF RX ADF RX LO BOUE TEE DIETE N C N C DME RX H DME RX LO MKR RX MKR RX L ALERT 2 MODULE DIRECT AUD DIRECT AUD 02 02 ALERT 1 MODULE DIRECT AUDIO 1 o DIRECT AUDIO 1 MUSIC LEFT RX MUSIC LEFT RX MUSIC RIGHT RX MUSIC RIGHT RX MUSIC PLAYER 2 FEE id RIGHT USER PHN N RIGHT USER RIGHT USER PHN JACK 2 C LEFT USER PHN PHN LEFT USER LEFT USER PHN Li LO JACK do te ICS TIE HI ICS TIE ICS TIE L LO EXPANSION PROPRIETARY AND CONFIDENTIAL LTD DESIGNED DRAWN DATE DUAL CHANNEL 05 AUDIO CONTROLLER r SIZE CAGE CODE PART NO REV SHEET ARPRONED 3AB01 AMS44 1 03 3 3 FILE 403 0103 DWG DWG INTERCONNECT DWG NO AMS44N403 2 REVISIONS DESCRIPTION DATE FORMAT CHANGES DEC 7 95 ECR 598 REFER TO ECR SEP 18 00 P102 57 PIN FEMALE DMIN MATING CONNECTOR 1OMA O 28 VDC LIGHTS nmr Oo ucx 4I9 Oo ocx O DC gt AMNC
29. RANCES UNLESS DIMENSIONS DESIGNED STATED OTHERWISE IN INCHES 0 X 0 030 0 XX 0 010 0 XXX 0 005 O XXXX 0 002 ANGLE 0 5 DEG MATERIAL IRD ANGLE ROJECTION DATE CHECKED FINISH DUAL CHANNEL AUDIO CONTROLLER NA CAGE CODE PART NO APPROVED 3ABO1 AMS42 1 00 1 1 FILE 922 0100 DWG DWG TYPE MECH INSTALLATION DWC NO AMS42N922 0 1 0 kg DESCRIP DOCCRO0934 CHANGED CAUTION LABEL UPDATED FORMAT SEP 14 04 5 02 127 5 MAX 0 94 23 9 EST 2 50 63 5 EST pr pol LEFT USER RIGHT USER RX RX NORTHERN AIRBORNE TECHNOLOGY ER MODELS SERIAL Y WEIGHT DATE 2 O UC gt 2 0 MADE IN CANADA KELOWNA ICS ISO CO 4 CAUTION UNITS WITH MOD 9 ARE NOT HARNESS COMPATIBLE WITH AMS43 5 PASSENGER CONNECTION ADDED LEFT USER S T RIGHT USER S T L CAUTION LABEL MISC PRODUCT LABEL 1 50 38 1 1 VO
30. SM19 AMS42 AMS44 Series Dual Channel Audio Controllers met Ete n AMS42 _ COM gt COM4 FMI FM2 FM2 2 KEYED LIVE os Isc Ics 2 VO 212 Qe e pes 00 NAV1 ADF DME A COM1 COM2 AUX N AUX COMI 2 FM FM2 z FM FM AMS44 PTT LIVE Sao PA ISO PA NORM INSTALLATION AND OPERATION MANUAL REV 4 00 November 21 2003 Northern Airborne Technology Ltd 1925 Kirschner Road Kelowna BC Canada V1Y 4N7 Telephone 250 763 2232 Facsimile 250 762 3374 Copyright 2003 by Northern Airborne Technology CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 Rev 4 00 AMS42 44 Dual Channel Audio Controller Manual Periodically NAT will release manual amendments In order to maintain the most accurate and up to date manual these amendments should be carried out immediately upon receipt and recorded on the following amendment record AMENDMENT RECORD Amendment Amendment Section s Date Entered CARE Ju30 2004 2 Performed at Factory Performed Factory eer wan Insert any Amendment Instruction sheets after this page Nov 21 2003 Page ii ENG FORM 820 0109 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD
31. TARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual 3 12 1 1 Emergency Mode Effects In the EMER mode all functions are retained by the pilot and copilot except ICS and possibly boom mic operation If the box or airframe fault prevents the TX annunciator from lighting during transmit indicating a failure in the mic keying circuit then the hand mic should be used A power fault of any kind will prevent the TX annunciator from lighting giving an immediate indication of failure If ICS audio is still available then the power to the controller has not failed and loss of the TX light indicates TX switch failure Note that in the EMER mode all switches work exactly as they do during NORM operation except for the RX and ICS volume controls which will have no effect Any selected receive audio is switched to the appropriate user in the emergency mode red mode switch in the EMER position but not to any passengers in the system Level will be lower than NORM operation because the signals are obtained directly from the radios bypassing the electronics in the controller This is provided for failure situations which make operation impossible in the NORM mode i e loss of power or amplifier failure etc 3 12 2 Isolation Operation The mode switch can select an ISO function which prevents the selected user from receiving ICS audio This is useful when passengers are interfering with
32. The DIR 1 AUDIO LEVEL can be adjusted using the pot accessible through the right side of the case Rotating the pot clockwise increases sidetone and counterclockwise reduces it 2 5 3 Left Side A red LED can be seen through the aperture marked POWER ON This illuminates to indicate that the power supply is connected to the unit Nov 21 2003 Page 2 5 ENG FORM 805 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual 2 5 4 Post Installation Checks With the controller disconnected from its mating connector check P101 pin lt 17 gt for 28 Vdc relative to ground and check P101 pin lt 34 gt for continuity to ground below 0 5 Q Check P102 pin lt 19 gt for the presence of the lamp dimmer voltage Check all mic phone music and key lines for shorts to ground or adjacent pins Check all key lines for correct operation Do not attach the audio controller until these conditions are met Power up the aircraft s system with the unit installed and turn on the radios and accessories required for the system Refer to Section 3 0 for operation and set up information Start with only the pilot s headset installed Check for correct ICS radio and transmit operation Do not proceed until the radios are functioning correctly The S T sidetone adjustment accessible through the right side of the controller and the transceiver internal adjustment may
33. X ZN 9 FM2 KEYED LIVE 10 1 AUX 150 1 90 48 3 5 77 146 6 NOTES 1 DIMENSIONING AND TOLERANCING IN ACCORDANCE WITH ASME 14 5 1994 CONFIDENTIAL AND PROPRIETARY TO LTD DIMENSIONS DESIGNED ARE INCHES mm BRAWN s DUAL CHANNEL CHECKED AUDIO CONTROLLER 2 42 Ibs 1 10 Kg MAX SIZE CODE PART NO REV SHEET CHROMATE CONVERSION FILE 922 0 DWG DWG MECH INSTALLATION DWG NO AMS42 922 0 REVISIONS DESCRIPTION DATE FORMAT CHANGES DEC 12 95 ECR 1686 SWAPPED NOTES 4 AND 5 JUN 12 00 ECR 598 REFER TO ECR OCT 24 00 AMS44 INSTALLATION NOTE ALL WIRES SHOULD BE 22 AWG UNLESS OTHERWISE USE TEFZEL M27500 OR SPEC44 M81044 SHIELDED WIRE WITH SOLDER SLEEVES gt HEADSET MICROPHONE AND ICS TIE LINES USE TWISTED SHIELDED PAIR CONNECT SHIELDS TOGETHER AND GROUND TO CLEAN AIRCRAFT GROUND GROUND POINT SHOULD BE THE SAME AS AIRCRAFT AUDIO SYSTEM POWER GROUND DO NOT GROUND MICROPHONE OR HEADSET LO CONNECTIONS TO AIRFRAME ADJUSTABLE LEVEL DIRECT AUDIO INPUT AMPLIFIED FIXED LEVEL DIRECT AUDIO INPUT NO ADJUSTMENT DO NOT PARALLEL FROM SINGLE SOURCE AUDIO TO OTHER AUDIO CONTROL PANELS AIRCRAFT ENTERTAINMENT SYSTEM MUSIC MUST BE GROUND REFERENCED IF NOT A FLOATING GROUND ADAPTER BETWEEN THE AUDIO CONTROLLER
34. annel Audio Controller Faceplate All AMS44 922 0 1 00 AMS Series Dual Channel Audio Controller Installation Diagram Up to 2645 AMS44 922 0 1 10 AMS Series Dual Channel Audio Controller Installation Diagram 2646 and up Section 2 0 ends after these drawings Nov 21 2003 Page 2 7 ENG FORM 805 0102 DOT Amendment 3 May 27 2008 CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD REVISIONS DESCRIPTION FOR PREVIOUS REVISIONS REFER TO 403 0101 DWG 403 1110 DWG AND 403 2102 DWG ECR 598 REFER TO ECR MAR 26 03 AMS42 INSTALLATION NOTES LL WIRES SHOULD BE 22 AWG UNLESS OTHERWISE SPECIFIED LL WIRE SHOULD BE IN ACCORDANCE WITH MIL W 22759 ALL IELDED WIRE CABLE SHOULD BE IN ACCORDANCE WITH MIL C 27500 EADSET MICROPHONE AND ICS TIE LINES USE TWISTED IELDED PAIR CONNECT SHIELDS TOGETHER AND GROUND O CLEAN AIRCRAFT GROUND GROUND POINT SHOULD BE E SAME AS AIRCRAFT AUDIO SYSTEM POWER GROUND DO NOT GROUND MICROPHONE OR HEADSET LO CONNECTIONS TO AIRFRAME ADJUSTABLE LEVEL DIRECT AUDIO INPUT AMPLIFIED FIXED LEVEL DIRECT AUDIO INPUT NO ADJUSTMENT DO NOT PARALLEL FROM SINGLE SOURCE AUDIO TO OTHER AUDIO CONTROL PANELS AIRCRAFT ENTERTAINMENT SYSTEM MUSIC MUST BE GROUND REFERENCED IF NOT A FLOATING GROUND ADAPTER BETWEEN THE AUDIO CONTROLLER AND ENTERTAINMENT SYSTEM WILL BE REQUIRED FOR MOD 9 UNITS ONLY THESE ARE N C FOR ALL OTHER UNITS
35. carried out by qualified personnel only 2 5 2 3 ICS GAIN LEVEL This factory preset pot may be covered by an adhesive disc to prevent field adjustment Under normal operation this pot does not need to be adjusted Any adjustment should be carried out by qualified personnel only Page 2 4 Nov 21 2003 ENG FORM 805 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMS42 44 Dual Channel Audio Controller Manual 5 19 4 00 2 5 2 4 Rear Hand Mic MIC and Passenger Headphones PAX R MIC PAX PAX User Right User selected selected Switch Positions Selection Examples Rear Hand Mic R MIC The R MIC rocker switch programs the Rear Hand Mic for functioning through the left or right TX selector switch The position of the switch can be toggled between Left User pressed downwards at the OUTBOARD end or Right User pressed downwards at the INBOARD end It is factory pre set to select the Left user Note The TX annunciator will not light when the hand mic is used Passenger Headphones PAX The PAX rocker switch programs the passenger headphones to the headphone audio selected by either the Left User or the Right User The position of the switch can be toggled between Left User pressed downwards at the OUTBOARD end or Right User pressed downwards at the INBOARD end It is factory pre set to select the Left user 2 5 2 6 DIR 1 AUDIO LEVEL
36. ct audio inputs and rear hand mic operation are also provided 1 3 Design Features The AMS42 and AMS44 can be easily configured at the time of installation for pilot operation from the left or right side of the controller by selection of internal jumpers and switches accessible through the top cover The five passenger positions are also configurable for left or right side operation Both controllers provide independent volume control of S T sidetone ICS intercom and RX receive audio for left and right side users Both controllers utilize active bandpass filtering for RX and ICS operation for maximum audio clarity in high ambient noise conditions 1 3 1 Transmit Functions Both controllers provide equal transmit capability between left and right sides and support the use of a hand microphone The hand mic is internally configured for left or right side operation and is connected directly to the selected radio for use during emergency or equipment failure situations Nov 21 2003 Page 1 1 ENG FORM 800 0103 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMS42 44 Dual Channel Audio Controller Manual SM19 Rev 4 00 During transmit operation the sidetone of the transceiver in use remains enabled while all other audio except DIRECT 2 is muted This function is specific to each side of the audio controller Transceiver interfacing is accomplished through directly switched microphones and ground r
37. e Switch is in the EMER position DIR AUD 2 is not amplified and is audible at all times Nov 21 2003 Page 3 7 ENG FORM 806 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMS42 44 Dual Channel Audio Controller Manual SM19 Rev 4 00 3 9 AMS44 Selection of Transmit Functions NAV1 NAV2 ADF DME NAV2 ADF DME MKR EN fe AAA OFF Ics OFF MAAA COM1 FM2 AUX N AUX 1 2 FMI FM2 2 AMS44 ett uve FM D 34 150 PA nat ICS VOL EN EMER A OPER y Ics VOL ez O S We Transmit Left User Co pilot Right User Pilot Transmit Annunciator Transmit Selector Transmit Selector Annunciator 3 9 1 Transmit Selectors The transmit selector controls are six position rotary switches one on each side of the panel to correspond to the user on that side of the aircraft The controls select the transmit function required by the relevant user Each rotary selector switch is completely independent of the other and the pilot and copilot have equal priority during transmit When the PTT is activated all audio selected on the side of the controller that is transmitting is muted except the sidetone of the transceiver in use 3 9 1 1 Automatic Receive Audio Receive audio is automatically selected as a function of the respective rotary selector switch No additional switching is needed
38. ection Switches 3 9 3 10 2 Transceiver Selection Examples 3 9 3 10 3 Volume Controls 3 10 3 10 4 Passenger Receive Audio Selection 3 10 3 10 5 Auxiliary Inputs 3 11 3 11 AMS44 Intercom Functions 3 11 3 11 1 ICS Modes of Operation 3 11 3 11 2 Passenger ICS Operation 3 12 3 12 AMS44 Mode Control 3 12 3 12 1 Emergency Operation 3 12 3 12 2 Isolation Operation 3 13 ENG FORM 820 0109 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual Section 1 0 Description 1 1 Introduction This manual contains information on the AMS42 and AMS44 Dual Channel Audio Controllers Information in this section consists of purpose of equipment features and specifications 1 2 Purpose of Equipment The AMS42 and AMS44 are dual channel audio controllers that provide central control of all aircraft audio They allow selection of transmit and receive audio emergency operation and provide LIVE KEYED or VOX intercom Support for the pilot copilot and five passengers is provided as well as left or right side pilot configurations The purpose of the AMS42 and AMS44 is to provide centralized control for all audio in the aircraft This is accomplished by providing positions for up to five transceivers and up to eight navaids Other functions such as external PA interface boom mic support for the pilot and copilot seven place intercom emergency and ISO operation two dire
39. eferenced keylines To ensure maximum radio compatibility no diodes or other steering components are used 1 3 2 Receive Functions Selecting a transceiver with the TX transmit rotary selector automatically selects the associated receive audio The RX inputs are also selected by the 3 position center off front panel switches five on each side of the audio controller the up position selects the respective navaid input and the down position selects the repective COM Two Direct Audio inputs are provided and are configurable for left or right side use 1 3 3 ICS Functions LIVE KEYED or variable VOX ICS operation can be selected from a single control The AMS42 and AMS44 use dynamic noise reduction and voice band filtering to provide the clearest possible ICS audio in high ambient noise conditions Transparent ICS for either the pilot or copilot allows immediate transmit operation with no control panel switching Return to ICS operation is automatic upon completion of the TX operation Isolation and Emergency modes of operation are provided to remove the pilot s from the intercom bus without interfering with normal passenger ICS Both controllers provide an ICS Tie line for multiple controller installations 1 4 Specifications 1 4 1 Electrical Specifications Input Power Typically 22 to 32 Vdc at 250 mA Nominal 28 Vdc Lighting 160 mA at 28 Vdc 600 mA at 5 Vdc Microphone Requirement Carbon equivalent 250 mV int
40. elected so the right side can monitor COM1 and FM2 transceivers Note that FM1 is not selected and AUX cannot be selected by the RX switches RX Switches at COM1 and FM2 AMS42 COM 4 COM 2 COM COM FM2 alo 1 2 KEYED LIVE 1 2 Sud AUX ISO AUX nat ICS VOL A 165 VOL 2 N TX Bun a TX 2 N 2 PA NORM IR 7 A I TX Selector at COM2 In the figure below the right side configuration remains the same The left side is set up to receive and transmit on FM1 while monitoring the COM2 transceiver Note that COM1 and FM2 are not selected on the left side RX switch at COM2 RX ON Pies RX ON 9 6 oG e AMS42 COM COM FM1 FM2 CON COM FM1 e B KEYED LIVE u sol O AUX ISO AUX ICS VOL EMER A OPER TX ICS VOL TX Selector at FM1 volume controls RX and ICS VOL Nov 21 2003 Page 3 3 ENG FORM 806 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMS42 44 Dual Channel Audio Controller Manual SM19 Rev 4 00 3 4 3 Volume Controls The controller features individual master RX and ICS VOL controls on both the left and right sides of the unit which can be adjusted to suit the specific user s requirements 3 4 3 1 RX Volume Control The RX knobs are the smaller topmost c
41. engers are always LIVE unless interrupted by an in line PTT cord or the controller is set for VOX operation Passenger and copilot observer operations can be maximized by using PTT type cord assemblies designed for use with NAT audio controllers CAUTION Ensure that all PTT type cord assemblies have properly shielded mic and phone wiring or crosstalk will occur 3 12 AMS44 Mode Control NAV1 NAV2 ADF DME MKR es NAV1 NAV2 ADF DME MKR 9999 O SESS 5 1 COM2 1 COM1 COM2 1 2 Q 2e AMS44 nas PA 150 ICS VOL s EMER EN ICS VOL O NORM O The Mode Control switch is a three position locking toggle switch that is used to select Mode Control Switch between ISO EMER OPER and NORM Itis identified with a red cap 3 12 1 Emergency Operation The center EMER OPER position of the mode switch places the controller into the emergency operation mode When switched to the EMER OPER position both pilot and copilot controls are removed from the ICS bus and connected directly to their respective radios This mode should be selected in the event of a box fault or power failure The Emergency function should be tested prior to flight to assure proper operation and allow the radio levels to be set adequately for emergency operation Page 3 12 Nov 21 2003 ENG FORM 806 0102 DOT CONFIDENTIAL AND PROPRIE
42. he middle of the top switch row It is common to use the LIVE mode during ground operations start up etc and to use VOX or PTT operation if conditions are so noisy that pilot fatigue will result ICS Mode Control VOX NAVI NAV2 ADF DME MKR 52 SA NAVI NAV2 ADF DME MKR lino 1 COM2 FM1 FM2 AUX JAEN AUX 1 FM1 2 ausa4 M pir LIVE 5 150 ICS VOL EMER A OPER EN EN N LY ews 2 The desired ICS mode is selected by the ICS mode control knob PTT ICS KEYED Operation ICS Mode Control set fully counter clockwise into the switch detent LIVE Hot Mic Operation ICS Mode Control set fully clockwise VOX Voice Activated ICS Mode Control set fully clockwise then slowly rotated counter clockwise until the intercom just becomes quiet This setting will vary with ambient noise conditions and the quality and number of microphones connected in the system KEYED operation is inherent to the pilot and copilot microphone circuits only Nov 21 2003 Page 3 11 ENG FORM 806 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMS42 44 Dual Channel Audio Controller Manual SM19 Rev 4 00 3 11 2 Passenger ICS Operation Passenger ICS audio is LIVE when the controller is in the LIVE or PTT mode of ICS operation and are VOX triggered when a VOX setting is selected Note that the pass
43. hipped from the factory 3 5 AMS42 Intercom Functions All ICS audio is controlled by the front panel ICS volume controls and be varied to suit conditions There are independent volume controls for the left and right sides of the controller The ICS VOL are the larger aft controls of the dual concentric volume control assemblies See section 3 4 3 2 If the controller is operated in the emergency mode ICS operation will continue if there is no fault condition between the passengers but not between the pilot and copilot or passengers Page 3 4 Nov 21 2003 ENG FORM 806 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual 3 5 1 ICS Modes of Operation Intercom system ICS audio may be implemented in three modes between users LIVE on constantly VOX voice activated or KEYED active only when switched by ICS PTT switch The ICS mode is selected by the ICS Mode control see below It is common to use the LIVE mode during ground operations start up etc and to use VOX or KEYED operation if conditions are so noisy that pilot fatigue will result ICS Mode Control OOO OE AMS42 COM 2 1 2 AUX ISO AUX KEYED LIVE ICS VO O VOL Z EMER A OPER 2 pA S ICS mode selection is made by positioning the ICS Mode control for the desired operation KEYED ICS PTT Operation
44. hite switch bats are center off type with the up position selecting the respective navaid receiver audio and the down position selecting the respective transceiver audio See section 3 10 3 1 for RX volume control 3 10 2 Transceiver Selection Examples In the figure below the right TX selector is set for transmit and receive operation on the AUX FM The Receive function switches are also selected so the right side can monitor COM1 and 2 transceivers as well as NAV1 and DME navaids Note that PA COM2 FM1 NAV2 ADF and MKR are not selected Receive Switches at Receive Switches Navaids NAV1 and DME monitor COM1 and FM2 M ptt ISO PA AMS44 amp ICS VOL ICS VOL LES MX EMER A OPER x 2 OG Ey NORM 92 e Transmit Selector at AUX FM Nov 21 2003 Page 3 9 ENG FORM 806 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMS42 44 Dual Channel Audio Controller Manual SM19 Rev 4 00 In the figure below the right side configuration remains the same The left side is set up to receive and transmit on COM2 while monitoring COM1 and FM2 transceivers as well as the MKR navaid Note that FM1 AUX FM PA NAV1 NAV2 ADF and DME are not selected on the left side Receive Switches Receive Switch monitor 2 at MKR Om ADF DME MKR OOGA lt gt ES 1
45. ng and shielding and may result in abnormal cross talk hum and ground loop noise Be especially careful with all microphone wiring and Tie Line wiring as these lines carry the lowest level signals in the aircraft All microphone and headset jacks should be electrically isolated from the airframe or significant ground loop noise may result Failure to follow the installation and wiring instructions provided in this manual for power and ground connections including the rating of the circuit breaker may lead to damage in the power input circuitry of the unit 2 4 3 Cable and Wiring All unshielded wire shall be selected in accordance with AC43 13 1B Change 1 Paragraphs 11 76 through 11 78 Wire types should be to MIL W 22759 as specified in AC43 13 1B Change 1 Paragraphs 11 85 11 86 and listed in Table 11 11 For shielded wire applications use Tefzel MIL C 27500 shielded wire with solder sleeves for shield terminations to make the most compact and easily terminated interconnect Follow the wiring diagrams in Section 2 6 as required Allow 3 from the end of the wire to the shield termination to allow the connector hood to be easily installed Note that the hood is a clamshell hood and is installed after the wiring is complete Aircraft harnessing should permit the unit to be lowered from the panel for easy access to all side adjustments Do NOT mount the unit until all adjustments have been carried out All wiring should be at least
46. o 150 min David Clark M1 DC M3 M4 M7 recommended Page 1 2 Nov 21 2003 ENG FORM 800 0103 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 Rev 4 00 1 4 2 1 4 3 Receive Audio Requirement Headset Power Key Logic Cross Talk Bi directional ICS Tie Line Physical Specifications Height Length Width Weight Mounting AMS42 44 Dual Channel Audio Controller Manual 25 mW into 6000 250 mW per channel into 600 Ground seeking for all lines Hard ground outputs to all transceivers TX LED on front panel lights when any transmit key input is low except hand mic De selected inputs 50 dB min below full output 340 mVrms for full output 1 6 input impedance 1 88 47 8 mm max 6 77 172 0 mm max from back of mounting surface and excluding mating connectors 5 75 146 1 mm max front panel 5 00 127 0 mm max rear enclosure 2 3 Ibs 1 04 Kg Standard Dzus Mounting four fasteners Optional Tray Mount Environmental Specifications Temperature Altitude Humidity Shock Vibration Nov 21 2003 ENG FORM 800 0103 DOT 20 to 55 C ambient 55 to 85 C survival 25 000 feet max 95 Non condensing 12g any axis Conforms to DO 160B category P Page 1 3 CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMS42 44 Dual Channel Audio Controller Manual SM19 Rev 4 00 1 5 Unit Nomenclature The AMS42
47. ontrols of the dual concentric volume control assemblies The RX VOL controls provide adjustment of the RX audio selected by the controller As in any audio system it is important to set the individual radio volume controls to a nominal level that is acceptable to both pilots then adjust the respective master RX VOL on the audio controller to suit user preference The RX VOL controls are designd to provide a minimum level even when set fully ccw All receive audio is muted during transmit NORM and ISO mode 3 4 3 2 ICS Volume Control The ICS VOL knobs are the larger bottom controls of the dual concentric volume control assemblies The ICS VOL controls provide adjustment of the ICS audio selected by the controller The ICS volume controls provide adjustment from 0 to full output See also section 3 5 3 4 4 Passenger Receive Audio Selection The passengers normally hear the radio audio as selected on the left side of the controller The passengers can be shifted to the right side by changing the setting of the internal PAX switch accessible through the right side of the controller The passengers will not hear any radio audio when the red mode switch is in the EMER position 3 4 5 Auxiliary Inputs Two Direct Audio inputs are available They are coupled directly to either the left or right side of the controller at the time of installation The Direct Audio inputs are normally selected for the right side of the controller when the unit is s
48. ry selector switches indicate that the right side of the controller is set for transmit and receive operation on the COM2 transceiver while the left side of the controller is set for transmit and receive operation on the FM1 transceiver 3 3 2 Hand Microphone The hand mic functions without power and will work in emergency or equipment failure situations The hand mic normally functions on the left side of the controller but can be connected to the right side at the time of installation by changing an internal switch When the hand mic or transmit PTT switch is activated the mic involved will be coupled to the radio or PA selected The TX annunciator will not light when the hand mic is used Page 3 2 Nov 21 2003 ENG FORM 806 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual 3 4 AMS42 Transceiver Receive Functions 3 4 1 Receive Selection Switches The receive audio is selected by switching any of the RX switches white switch bats UP to connect the indicated radio to the headphone bus The AUX position does not have a separate RX switch and is connected to the headphone bus by rotating the TX selector to the AUX position See section 3 4 3 1 for RX volume control 3 4 2 Transceiver Selection Examples In the figure below the right side TX selector is set for transmit and receive operation on 2 The Receive function switches are also s
49. s accessible through the top cover The right side of the controller responds to the switches labeled RIGHT USER RX and the left side responds to the switches labeled LEFT USER RX Each switch can be individually selected or deselected by toggling the position of the switch To select on press the switch downwards at the end nearest the front of the unit numbered 1 8 and to select off press downwards at the end nearest the back of the unit marked OPEN When viewed from the front of the unit the switches toggle the navaids on or off from left to right as follows Switch TAPE TAPE AUX2 AUX1 ADF1 NAV2 NAV1 Right Left Function Note These inputs are normally selected OFF OPEN when the unit is shipped from the factory AMS44 The receive selection switches are two pairs of rocker switches accessible through the top cover The right side of the controller responds to the switches labeled RIGHT USER RX and the left side responds to the switches labeled LEFT USER RX TAPE position is selected on or off by these switches Each switch can be individually selected or deselected by toggling the position of the switch between on pressed downwards at the end nearest the front of the unit and off pressed downwards at the end nearest the back of the unit LEFT USER RIGHT USER RX RX TAPE Right TAPELeft TAPE Right TAPE Left Nov 21 2003 Page 2 3 ENG FORM 805 0102 DOT
50. te unit should have the following Warranty Card Certificate of Conformity AMS42 or AMS44 Dual Channel Audio Controller Operator s Manual Verify that all items are present before proceeding and report any shortage immediately to your supplier Complete the warranty card information and send it to NAT when the installation is complete If you fail to complete the warranty card the warranty will be subsequently activated on the date of shipment from NAT 2 3 Continued Airworthiness Maintenance of the AMS42 or AMS44 Dual Channel Audio Controller is on condition only Periodic maintenance of this product is not required 2 4 Installation Procedures 2 4 1 Warnings MPORTANT Do not bundle any lines from this unit with transmitter coax lines Do not bundle any lines from this unit with 400 Hz synchro wiring or AC power lines Failure to observe these limitations may result in incorrect or intermittent operation or severe audio interference on received and transmitted signals 2 4 2 Cautions In all installations use shielded cable exactly as shown and ground as indicated Significant problems may result from not following these guidelines Nov 21 2003 Page 2 1 ENG FORM 805 0102 DOT Amendment 2 Feb 15 2005 CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual All audio installations can be seriously degraded by incorrect wiri
51. terface for an additional handheld transmit microphone hand mic and pilot copilot isolation emergency operation Typical definition of the unit has the pilot on the right side of the controller and the copilot and passengers on the left side This can be easily re configured at the time of installation for alternate seating arrangements Individual control over receive and transmit functions is provided for both the pilot and copilot observer and a common control is provided for LIVE KEYED and VOX ICS operation An additional control is provided for NORMAL EMERGENCY or ISOLATE pilot cut off from ICS audio operation Sidetone S T level is adjustable internally and Receive RX and Intercom ICS levels are adjustable on the front panel All audio except the S T of the radio in use and any Type B DIRECT AUDIO input signals are muted during transmit for clarity ICS operation allows transmit during any ICS mode by using the PTT switch 3 2 542 Audio Alerting Functions No internal audio alerting is provided in the AMS42 Two direct unswitched inputs are provided to allow airframe alerting signals to be routed to the pilot See Section 3 4 5 Auxiliary Inputs for more information DIR AUD 1 is amplified by the Audio controller and can not be heard when the Mode Switch is in the EMER position DIR AUD Z2 is not amplified and is audible at all times Nov 21 2003 Page 3 1 ENG FORM 806 0102 DOT CONFI
52. to establish external communication 3 9 1 2 Transmit Annunciator During transmit from either the pilot or copilot position the appropriate TX annunciator green will light on the front panel 3 9 1 3 TX Selector Example In the figure that follows the positions of the rotary selector switches indicate that the left and right sides of the controller are set for transmit operation on the AUX FM transceiver NAVI NAV2 ADF DME S ps pa E MKR OFF Cy AH DU XS 2 COM1 COM2 FM 2 2 2 Wea gt Be ISO nee ICS VOL ICS VOL Both Transmit Selectors at AUX FM Page 3 8 Nov 21 2003 ENG FORM 806 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 5 19 4 00 AMS42 44 Dual Channel Audio Controller Manual 3 9 2 Hand Microphone The hand mic functions without power and will work in emergency or equipment failure situations The hand mic normally functions on the left side of the controller but can be connected to the right side at the time of installation by changing an internal switch When the hand mic or transmit PTT switch is activated the mic involved will be coupled to the radio or PA selected The TX annunciator will not light when the hand mic is used 3 10 AMS44 Transceiver Receive Functions 3 10 1 Receive Selection Switches The Receive Audio select switches w
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