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SM76 - Northern Airborne Technology

1. c AJA v OVL Ol OIN OVL AJA Vd O1 Vd AJA XL 2 4350 Ol c 4450 AJA XL v 4550 Ol OIN v 4 50 AA XE 9 41450 1 OIN 9 8350 ISON LOWY OSIN LOWY AGOW WYON IH JIL SOl XL SOl 0131 Sol XL 621 591 X SOlI XM 6 djMOd XH C eh v 124145 NVWHONIM c djMOd v XH SO LOWY 9 Y4IMOd 9 XM 9 AGOW 8 dOV AJA AHA O1 OIN SHA AJA OVL O1 OIN OVL AJA OT OVL A3M S 9 1 S OVL A3M XL M3Sf O1 M3sn A34 XL M3sn M3Sn XL S M3sn O1 OIN S 3SN AJA NVWHONIM Z M3Sf SIN NVWHONIM Z YSN NWYON 0 850 q 850 J3MOd 850 ASN XM M3MOd dOV XML dOV 123135 NVWHONIM XM XM 123135 NVWHONIM XM S M3MOd S G JGOW VIEW 15 FROM REAR OF AIRFRAME CONNECTOR gQNnOSsO 94 20 84 4 983W3 NOILV IOS TIVO IH c YSN IH LNO ALISOdNOO IH NHd 9 450 IH NHd v s amp 3Sf IH NHd 45 IH XNV IH X XNY XY SIN IH XY 6 AVN IH X4 Vd IH v 9 1 IH XY c OWL IH XY AHA P104 50 PIN
2. s nat Installation and Operation Manual AMU50 001 Audio Management Unit SM76 ISSUE 1 04 Northern Airborne Technology Ltd 1925 Kirschner Road Kelowna BC Canada V1Y 4N7 Telephone 250 763 2232 Facsimile 250 762 3374 Issued on the authority of Northern Airborne Technology Ltd Copyright 2009 K 2 nat AMU50 001 Audio Management Unit SM76 installation and Operation Manual Prepared By Approved By The status of this installation and operation manual is controlled by issue shown on the title page The status of each section is controlled by revision shown in the footer of each page All revisions affecting sections of this manual have been incorporated into the latest issue ISSUE REVISION RECORD Manual Issue Section _ Revision Description Issue Date Number Revision Number 1 04 Section 1 Rev 1 03 Rewritten for MOD 15 May 04 2010 Section 2 Rev 1 04 Minor wording issues 1 03 section 1 Rev 1 02 ACP51 and ACP54 added Apr 16 2010 Section 2 Rev 1 03 WOW details added 1 02 Section 1 Rev 1 01 Rewritten for ETSO Sep 02 2009 section 2 Rev 1 02 1 01 Section 2 Rev 1 01 Text added to 3 caution in 2 4 2 Jul 10 2009 1 00 Section 1 Rev 1 00 Initial release Jun 01 2009 Section 2 Rev 1 00 Section 3 Rev 1 00 Installation and Operation Manual Page ii ENG FORM 820 0115 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD Section T
3. LX gt ol lA ol ol ol cl cA RARRRRRWONNN OB 3 3 13 t AMU50 001 Audio Management Unit SM76 Installation and Operation Manual Table of Contents Title Description Introduction Product Description System Information System Configuration Design Features Specifications Electrical Specifications Physical Specifications Environmental Specifications Product Approval DACS System Equipment Installation Introduction Unpacking and Inspection Warranty Continued Airworthiness Installation Procedures Warnings Cautions Mounting Cabling and Wiring Post Installation Checks Adjustments and Configuration Maintenance Mode DevCs Configurable Settings Accessories Required But Not Supplied Installation Drawings Operation Introduction General Information Control Functionality Audio Control Panels PTT Keys Transmit Priority Aural Alerts Remote Alert Cancel Switch Remote Alert Inhibit Switch Audio Muting EMERG BACKUP Indicator Passenger Intercom Passenger ICS Volume Winchman Select NORM Call High Priority Call ISO Override Other Switches and Indicators Installation and Operation Manual ENG FORM 820 0115 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD Page d LI CO O ZA A NS NS NO X 1x Lx 3 4
4. iii 3 nat AMU50 001 Audio Management Unit SM76 Installation and Operation Manual Section 1 Description 1 1 Introduction Information in this section consists of product description design features and specifications for the 50 001 Audio Management Unit AMUSO derivative product information shall be contained in the applicable manual supplement which may be obtained from Northern Airborne Technology Ltd as required Review all notes warnings and cautions Note This manual contains information applicable to units MOD 12 and above s n 3000 and above For information applicable to units MOD 11 and below s n 2999 and below contact the product support department at Northern Airborne Technology Ltd 1 2 Product Description 1 2 1 System Information The Digital Audio Communication System DACS is a management system that distributes and controls all of the transceiver receiver and warning source audio in an aircraft It enables the transmission of microphone audio to a selected Transceiver and distributes all Inter Communication System ICS audio The primary component of the DACS is the AMU50 Connected to this Line Replaceable Unit LRU are the user headsets the transceivers the receivers and the Audio Control Panels ACP The 50 also has an audio accessory port that enables the connection of a unit for providing ICS audio in the cabin The DACS architecture is a star configuration to prevent th
5. 2 during emergency electrical system conditions the EMERG power input must be connected to an aircraft essential 28 Vdc buss or battery buss 2 4 4 3 Normal and Backup Mode Inputs There are two NORM MODE inputs 1 and ACP2 on the AMUSO one for User 1 one for User 2 When both of these inputs are active the system will be in Normal Mode There are two BACKUP MODE inputs 1 and ACP2 on the AMUSO one for User 1 and one for the User 2 When either of these inputs is active the system will enter Backup Mode When the system is in Backup Mode users 1 and 2 maintain full functionality via backup microphone and headphone amplifiers but all other headsets and ACPs are disabled This mode is to overcome a crew headset amplifier failure or a failure of circuitry used to support passengers that may be adversely affecting the operation of the system When User 1 or User 2 s Normal Mode and Backup Mode inputs become inactive the AMU50 will enter Emergency Mode In Emergency Mode all ACPs are deactivated User 1 and User 2 maintain a limited amount of functionality however In this mode User 1 will be able to listen to COM1 NAV1 Direct1 Direct2 Direct3 and all alerts at a fixed level User 1 will be able to transmit on COM1 In this mode User 2 will be able to listen to COM2 NAV2 Direct1 Direct2 Direct3 and all alerts at a fixed level User 2 will be able to transmit on COM2 User 1 and User 2 will have keyed intercom au
6. 4 4 7 1 Aural Alert Active output ALERT ACTIVE The Aural Alert Active output becomes active when any of the Aural Alert messages are being played This includes the delay between alert repetitions and between overlapping alert messages This output is operational with the AMU50 configured in all modes 2 4 4 7 2 DF Blanking Output The DF Blanking output is operational in Normal and Backup Modes and becomes active when any TX PTT output is active with a maximum delay of 1 ms This output is operational with the AMU50 configured in Normal and Backup modes only 2 4 4 7 3 Emergency Mode Active Output EMERG BACKUP OUT The Emergency Backup Active output becomes active when the system is in Emergency Mode or Backup Mode This output is operational with the AMU50 configured in Backup and Emergency modes only 2 4 4 7 4 Crew Isolation output CREW ISO OUT The Crew Isolation output becomes active and stays active while the crew members are isolated from the passengers While the isolation mode is temporarily deactivated because of an Isolation Override Call the Crew Isolation Output is also deactivated This output is operational with the AMU50 configured in Normal mode only Section 2 Rev 1 04 Issue 1 Page 2 7 ENG FORM 805 0120 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 9 AMU50 001 Audio Management Unit SM76 Installation and Operation Manual 2 4 4 8 Interconnect Audi
7. B Operational Shocks 22 Alternate Test Procedure Crash Safety 22 Alternate Test Procedure Impulse Test Procedure 2 Sustained Unknown or Random orientation in aircraft Vibration Category SBM U2FF1 without shock mounts Rev 1 00 Apr 21 2009 Page 1 of 3 ENG FORM 521 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD nat AMU50 001 Environmental Qualification Form Power input 16 0 Category Z Conditions Explosive Atmosphere Waterproofness Fluids Susceptibility Sand and Dust Fungus Salt Fog Magnetic Effect e The system was tested to DO 160E subparagraph 16 6 1 3 b requirement for equipment with digital circuits The system was tested to DO 160E subparagraph 16 6 1 1 b 3 Emergency Operating Voltage conditions The system was tested to DO 160E subparagraph 16 6 2 2 Low Voltage Conditions 17 0 Category A 18 0 Category Z 19 0 Category ZC Radio Frequency Susceptibility 20 0 Category RR DO 160E subparagraph 20 5 Radiated Voltage Spike Audio Frequency Susceptibility Induced Signal Susceptibility Susceptibility was tested per DO 214 section 2 5 11 and DO 160E Radio Frequency Emission 21 0 Category H 22 0 Category A3J33 Rev 1 00 Apr 21 2009 Page 2 of 3 ENG FORM 521 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD Lightning Induced Transient Susceptibility nat AMU50 0
8. FEMALE DMIN MATING CONNECTOR QNNOYD S3MOd WSON 0 8 NWYON TSONVO 1431 NI TIVO NSON IH 435 IH NHd NVWHONIM Z 8350 IH NHd S s3sn IH NHd lt 235 IH NHd s3Sn IH XY 6 XNV IH XY 40V IH XY AW IH XY AVN IH XY S 9 1 IH OWL IH XJ IH XY AHA 4295 50 PIN FEMALE DMIN MATING CONNECTOR 8 LIMJIV 170 OSI 449 9 Lev JALOV 1441 Y 133 1V 18441 O1 X40 c 100 dnMOv8 9M3W3 LNO ALISODWNOO Xs A3M 5391 9 Y3SN O1 NHd 9 3SN AJA 591 4450 01 NHd 4350 AJA 531 c 4450 01 NHd 6 4 5 O1 LHOIY OISNW QT Xd Xv IH LH9IM OISNW Ol X XAV 01 X4 9 ald 01 YAWN IH 9 UIC 01 XY AVN 01 XJ v ald XY Vd IH Ol XJ 1 Ol O1 XHY IH X4 2 ald Ol X SISSVHO 4 LAdLNO ONIMNV1E 40 S 1441 AJA 0154 LM3IV 5144 NO LHOISM 1 31 Ol YAO 5 521 NVWHONIM Z 4350 01 NHd NVAHONIM Z 351 A3M 591 S 4350 O1 NHd 6 4950 A3M 59 YSN 01 NHd 4350 AJA SOL Y3SN 01 NHd s3sn XJ 1441 5 01 XY c XNV IH XY 1331 OISNW 01 Xs JOV 01 6 MIO 01 X AWC IH S IG O1 XY AVN Ol XY MIO 01 XJ S OVL IH XY MIC Od Xd 1 O1 XY Ol Xa OVI IH XY O1 X8 SHA SISSVHO VIEW 15 FROM REAR OF AIRFRAME CONNECTOR CONFIDENTIAL AND PROPRIETARY
9. FORM 805 0120 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 2 4 2 9 AMU50 001 Audio Management Unit SM76 Installation and Operation Manual Cautions CAUTION Do not bundle any lines from this unit with transmitter coax feed lines Do not bundle any logic audio or DC power lines from this unit with 400 Hz synchro wiring or AC power lines Do not position this unit next to any device with a strong alternating magnetic field such as an inverter motor or blower or significant audio interference will result CAUTION In all installations use shielded cable exactly as shown and ground only as indicated Significant problems may result from not following these guidelines 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 CAUTION Installation Limitations 1 Mounting The AMUS5O must be mounted to an aluminium surface at least 376mm x 333mm x 1 27mm thick 14 8 x 13 1 x 0 050 thick or equivalent for proper heat dissipation Failure to do this may mean that the unit will not meet its minimum performance standard requirements at the operating high temperature defined in the environmental qualification form 2 Approved Configurations The DACS has only been tested to demonstrate compliance with the requirements of TSO C13
10. LN du ue 2 2 MIC EA MIC TAC 2 MIC LO oe LO TAC 2 TAC 2 KEY KEY 5 is des 0 deut 4 MIC es Sy d PA KEY KEY 20 USER 2 MIC HI 20 AWG el HEADSET 2 USER 2 MIC LO T JACK USER 4 MIC HI 22 RE HEADSET 4 USER 4 MIC LO JACK USER 6 MIC HI EE 20 ss HEADSET 6 USER 6 MIC LO 20 AWG JACK USER 2 IX KEY USER 4 TX KEY USER 6 TX KEY 01 MOSI 01 MISO SPARE CHASSIS GND RMO1 CLK HI RMO1 CLK LO RMO1 CS RMO1 PWR RM01 GND ICS TIE TX ICS TIE H ICS TIE ICS TIE LO ICS TIE RX ICS TIE RX RX 2 TX 2 TX TX TX PWR 2 RX 2 RX ACP 2 PWR NORM MODE BACKUP MODE ACP 2 NORM MODE ACP 2 BACKUP MODE ACP 4 TX ACP 4 TX ACP 4 RX ACP 4 RX ACP 4 PWR ACP 6 TX ACP 6 TX ACP 6 RX ACP 6 RX ACP 6 PWR ACP 2 WNCHMAN SELECT CONFIDENTIAL AND PROPRIETARY TO NAT LTD NORTHERN AIRBORNE TECHNOLOGY LTD IDATE 26 07 AUDIO MANAGEMENT UNIT CHECKED oec DTE 4 CAGE CODE PART NO REV SHEET a 5 1 AMUS50 001 1 24 3 6 FILE FILE 403 0 DWG O DWG DWG INTERCONNECT DWG NO AMU50N001M403 2 AMUS0 001 VHF 1 RX HI VHF 1RX LO TAC 1 RX HI 1 RX LO 3 RX HI TAC 5 RX LO TAC 5 RX HI TAC 5 RX LO NAV 1 RX HI NAV
11. Operation Manual 1 3 Design Features The AMUSO is comprised of three subassemblies two of which support two 50 pin D Min connectors each Power distribution radio and headset connections are evenly distributed across the connectors to ensure the loss of one connector does not disable the entire system The Audio Management Unit supports up to six separate ACPs The AMUSO is responsible for providing power to each ACP53 and completing all of the audio processing to and from the ACP53 including MIC and PHN audio user switch selections and level adjustments The maximum Receive Audio input level and the Transmit MIC output level are both adjustable using the DACS DevCs The provides an audio accessory serial data port for connecting a passenger intercom device Support is provided for a Normal ICS Call input a High Priority ICS Call input and an Isolation Override input The Call inputs are used by passengers without ACP to call the crew when they have been isolated When the Isolation Override input becomes active the Isolation Mode is temporarily suspended and the passengers can communicate with the crew members The Voice Operated ICS VOX level for the passengers not assigned to an ACP53 is set in the DACS DevCs The highest VOX level threshold shall act as the keyed mode of operation and the VOX circuit shall not gate the microphone audio In this mode the MIC audio can only be gated using the ICS PTT input When the lowest
12. causes the call indicators on all ACPs to flash and sends a Normal Call tone to all headsets The level of the Normal Call tone is configured for each ACP using the DevCs application This input is operational with the AMU50 configured in Normal mode only Section 2 Rev 1 04 Issue 1 Page 2 5 ENG FORM 805 0120 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD m tat AMU50 001 Audio Management Unit SM76 Installation and Operation Manual 2 4 4 6 3 High Priority Call Input HIGH PRIORITY CALL IN When in ISO mode if the High Priority Call Input is activated the AMUSO causes the call indicators all ACPs to flash at a higher rate and sends a High Priority Call tone to all headsets The level of the High Priority Call tone is configured for each ACP using the DevCs application This input is operational with the AMU50 configured in Normal mode only 2 4 4 6 4 Isolation Override Input ISOLATION OVERRIDE IN When in ISO mode if the Isolation Override Input is activated the AMU50 temporarily deactivates ISO mode so that the cabin members can talk to the crew The level of the ICS heard during ISO override is configured for each ACP using the DevCs application This input is operational with the AMU50 configured in Normal mode only 2 4 4 6 5 Alert Inputs ALERT 1 thru ALERT 8 The AMUSO supports eight discrete Aural Alert inputs each can be configured for Active Hi or Active Lo triggering Th
13. nominal to produce rated headphones output Circuitry Type Single ended Direct Audio Inputs DIR 1 RX thru DIR 6 RX Quantity Six Input Impedance 1000 10 Rated Input 1 to 19 95 Vrms maximum to produce rated headphones output Circuitry Type Differential Receive Audio Inputs Quantity Sixteen 8 transceivers and 8 receivers Input Impedance 1000 10 Rated Input 1 to 19 95 Vrms maximum to produce rated headphones output Circuitry Type Differential Music Inputs MUSIC RIGHT LEFT RX Quantity Two one left one right summed to produce mono Input Impedance 1000 10 Circuitry Type Differential Input Range 1 400 mVrms nominal Input Range 2 2 5 Vrms nominal Discrete Inputs All discrete inputs have the following specifications unless stated otherwise Logic Active LO switched ground no external pull up required Input Active lt 3 Maximum Current lt 10 Input Protection Diode protected to 45 Vdc maximum Transmit Push To Talk USER 1 TX KEY thru USER 7 TX KEY Quantity Seven ICS Push To Talk Inputs USER 1 ICS KEY thru USER 7 ICS KEY Quantity Seven Section 1 Rev 1 03 Issue 1 Page 1 4 ENG FORM 800 0116 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 3 nat AMU50 001 Audio Management Unit SM76 Installation and Operation Manual Passenger ICS Volume Inputs PAX VOL Quantity Two Aural Alert Cancellation Input Alert Cancel Quantity One Aural Alert Inh
14. played correctly The alert playing function will recover when the alert input is de activated CAUTION Do not assign the alert priority as Highest 4 for more than six alerts If more than six alerts with priority assigned as Highest 4 are activated simultaneously the system will not respond to ACP control inputs audio will continue to play corresponding to the last control settings The system can be selected to EMER mode using a Mode Control switch to permit emergency mode functionality or full system control can be re established by reducing the number of active alert inputs to six or below and de selecting then re selecting NORM mode using the ACP Mode Control switch 2 4 4 6 Interconnect Inputs 2 4 4 6 1 Passenger Intercommunication System Volume PAX VOL The AMUSO has two Passenger ICS Volume Inputs for adjusting the ICS Audio Level for all users assigned to the virtual ACP and the digital ICS tieline The PAX VOL switch if installed should be attached to the PAX VOL and PAX VOL pins Each activation of the PAX VOL switch causes one volume level change of 2 dB an increase for the positive pin and a decrease for the negative pin The Passenger power up ICS Level Variable default value is configured using the DevCs application This input is operational with the AMU50 configured in Normal mode only 2 4 4 6 2 Normal Call Input NORM CALL IN When in ISO mode if the Normal Call Input is activated the AMU50
15. repeat for a set number of times up to 5 or can repeat continuously Continuous aural alerts will continue to play until the trigger condition has been resolved otherwise an alert will stop after the set repetition number and will not play again unless the trigger condition is resolved AND the alert is reactivated If two or more alerts become active at the same time the priority of the alert as configured at installation will decide which alert plays first or the sequence in which they repeat If two or more alerts that have been configured as highest priority are triggered at the same time they will play simultaneously User specific aural alerts are defined at installation For full information consult the DevCs manual 3 3 5 Remote Alert Cancel Switch CAUTION It is important to be aware of all possible implications if the Aural Alert Cancel switch is activated At installation any Aural Alert generated by the AMUSO may be configured as cancellable or not cancellable A remote Alert Cancel switch may be installed in the aircraft and if a cancellable alert is playing this switch can be used to cancel the alert even if the trigger condition still exists Even if the alert is cancellable an alert will be played at least once before the cancellation takes effect A new cancellable alerts triggered after the switch is activated will be unaffected 3 3 6 Remote Alert Inhibit Switch CAUTION When an Aural Alert Inhi
16. 0 Socket Crimp Housing 20 21 R50 2 D Sub MIL Spec 50 Pin Crimp Housing 20 11 R50 100 MS Crimp Socket 20 26 901 100 MS Crimp Pin 20 26 891 4 Hoods D Sub Metal 20 28 003 4 Tag Ring Shield Termination 20 30 416 Section 2 Rev 1 04 Issue 1 Page 2 12 ENG FORM 805 0120 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 9 AMU50 001 Audio Management Unit SM76 Installation and Operation Manual 2 7 Installation Drawings DRAWING REV DESCRIPTION TYPE AMU50 001 403 0 1 24 Audio Management Unit Interconnect 6 sheets AMU50 001 405 0 1 00 Audio Management Unit Connector Map AMU50 001 521 0 1 00 Audio Management Unit Environmental Qualification Form AMU50 001 922 0 1 31 Audio Management Unit Mechanical Installation Section 2 ends following the above documents Section 2 Rev 1 04 Issue 1 Page 2 13 ENG FORM 805 0120 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD REVISIONS REV DESCRIPTION DATE FOR PREVIOUS REVISIONS SEE REV 1 23 1 24 ECR10335 NOTE 20 MODIFIED JAN 11 10 AMUS0 001 INSTALLATION NOTES NOTES 1 ALL WIRES SHOULD BE 22 AWG UNLESS OTHERWISE SPECIFIED ALL UNSHIELDED WIRE SHALL BE SELECTED IN ACCORDANCE WITH AC435 15 1B CHANGE 1 PARAGRAPHS 11 76 THROUGH 11 78 WIRE TYPES SHOULD BE MIL W 22759 AS SPECIFIED IN AC4 5 15 1B CHANGE 1 PARAGRAPHS 11 85 11 86 AND LISTED IN TABLE 11 11 ALL SHIELDED WIRE CABLE SHOULD BE IN ACCORDANCE WITH MI
17. 01 Environmental Qualification Form Fire Flammability Other Tests REMARKS Category X no test performed DO 160E Sections 4 to 8 and 15 to 17 tests were conducted at Northern Airborne Technology Ltd in Kelowna BC AMU50 001 DO 160E Sections 18 to 22 tests were conducted at CKC Laboratories in Bothell WA on AMU50 001 Testing was conducted with the AMU50 001 configured as part of the Digital Audio Communication System DACS Where compliance with Minimum Performance Standards is required by DO 160E it was assessed on the system against DO 214 Section 2 5 Testing was performed between June 2008 and March 2009 End of Environmental Qualification Form Rev 1 00 Apr 21 2009 Page 3 of 3 ENG FORM 521 0102 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD OMG 9MQ 0 666 315 3000 39 2 325 ALWN e LVN NAP 5 _ S3HONI NI AD0TONHOSL 3NHOGNIV NHSHLIHON quai oce ocu 1 LYN OL AavL3IHdOSHd IVILN3GIJNOO 0 ZZ6 LOO OSNWV L L 1335 Ada ON NOLLVTIVLSNI LOO OS NV ON Luvd NOILOJ Odd jIONV LN3A3OVNVIN OIGNV ALIAVHO 40 N31N30 4g 99 1 969 ONILVOO NOISM3ANOO HSINIJ WANINMTY VW 67 02 Sd 9v SSVW 9340 GO 319NV C00 0 XXXX O G00 0 4T XXX
18. 1RX LO DME RX HI DME RX LO ADF RX HI ADF RX LO AUX 2 RX HI AUX 2 RX LO USER 1 PHN HI USER 1 PHN LO USER 3 PHN USER 3 PHN LO USER 5 PHN HI USER 5 PHN USER 7 WINCHMAN PHN HI USER 7 WINCHMAN PHN LO USER 1 CVR HI USER 1 CVR LO NORM 28 VDC POWER NORM POWER GROUND CHASSIS GROUND DIR 1 RX HI DIR 1 RX LO DIR 3 RX HI DIR 3 RX LO DIR 5 RX HI DIR 5 RX LO MUSIC LEFT RX HI MUSIC LEFT RX LO USER 1 ICS KEY USER 5 ICS KEY USER 5 ICS KEY USER 7 WINCHMAN ICS KEY ALERT 1 ALERT 5 ALERT 5 ALERT 7 WEIGHT ON WHEELS NORM CALL IN ALERT CANCEL DF BLANKINC OUTPUT CONNECTOR KEY J103 P1035 50 PIN FEMALE DMIN MATING CONNECTOR Ps an LO x RA TAG 4 LO x LO Y A BA RO LO b4 LN RX NAV 1 LO T RX DME LO Y X d ADF LO Y a pe RX I 4 20 AWG Q PHN HEADSET 1 20 AWG LO JACK 20 AWG nd aa PHN HEADSET 3 20 AWG LO JACK 20 AWG Ed S PHN HEADSET 5 JN 20 AWG LO JACK 20 AWG N b PHN HEADSET 7 20 AWG T NW JACK A Y Eus RX n AUDIO BREAKER 20 AWG NORM 28 POWER AN 20 AWG NORM POWER GROUND Ads n gt gt 2 i uM DR 1 a ORES m DIR5 ad pa RX MUSIC LO LEFT IC eles ICS SW 1 EE 5 SW 5 O ics sw 5 C ues I ics sw 7 T ALERT 1 OL
19. 9 and ETSO C50c with the configuration settings listed below Settings other than those listed are not approved DevCs Explorer Data Edit Panel Parameter Panel Item Users User 1 to Mic Headphone 80 Emergency Mode User 1 and 2 Emergency Mode These settings are selected through the DevCs NAT P N 79 04 001 Revision 1 5 0 0 or later Section 2 Rev 1 04 Issue 1 ENG FORM 805 0120 DOT Page 2 2 CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 3 nat AMU50 001 Audio Management Unit SM76 Installation and Operation Manual CAUTION DACS LRU Replacement If a replacement 01 is being installed it is important to be aware that the configuration data from the existing AMU50 will be overwritten by factory default data stored the RMO1 Similarly if a replacement AMUSO is being installed the configuration data in the AMUSO will be overwritten by the data stored in the existing RMO1 if installed Refer to the Northern Airborne Technology DevCs Installation and Operation manual for information on re entering configuration data for a DACS AMU50 Audio Management Unit CAUTION The will start up in Maintenance Mode if the Weight On Wheels input is grounded and the USB port is active when power is applied to the unit 2 4 3 Mounting The AMUSO can be bulkhead mounted in any orientation using four 10 32 screws No shock or vibration isolators are required The AMUS5O must be moun
20. HNOLOGY LTD 9 AMU50 001 Audio Management Unit SM76 Installation and Operation Manual 1 4 2 Physical Specifications Height 56 6 mm 2 23 in maximum Depth 2 9 4 mm 11 00 in maximum Width 190 0 mm 7 48 in maximum Weight 2 kg 4 4 lbs maximum Material and Finish Conversion coated aluminium Connectors Four 50 pin D Sub two male and two female Jack post locking hardware Installation RS 422 Cable 20 0 m 785 9 in maximum RM01 Cable 0 3 m 11 8 in maximum MIC Cable 5 0 m 196 7 in maximum PHN Cable 5 0 m 196 7 in maximum USB Cable See USB 2 0 Specification Mounting Bulkhead Mount Four 10 32 screws 1 4 3 Environmental Specifications The 50 001 has been tested to the environmental conditions listed below Environmental categories for which TSO and ETSO compliance has been demonstrated are listed on the Environmental Qualification Form in Section 2 of this manual Temperature 40 to 70 C Operating 45 and 85 C Short Time Operating 55 to 85 C Ground survival Altitude 50 000 feet max Humidity 95 non condensing Shock Operational Shock 6 g for 11 ms Crash Safety impulse 20 g for 11 ms Crash Safety sustained 20 g for 3 s Vibration RTCA DO 160E category SBM U2FF1 1 4 4 Product Approval 1 4 4 1 FAA TSO C139 When configured as defined in section 1 4 5 DACS System Equipment the Digital Audio Communication System is approved as follows FAA 5 139 RTCA D
21. IDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 9 AMU50 001 Audio Management Unit SM76 Installation and Operation Manual After the configuration settings have been uploaded the USB connection must be removed and 28 Vdc power to the AMUSO cycled to restart it in the operational mode All settings that are essential to aircraft operation must be verified by a system test in both normal and emergency modes e g direct audio audible to crew transmit and receive functions on COM1 and COM operate correctly for crew receive functions on NAV1 and NAV2 operate correctly for crew required intercom functions operate correctly etc 2 5 2 DevCs Configurable Settings The configuration settings available through the DevCs are listed below For full information refer to the DevCs Installation and Operation manual 2 5 2 1 AMU50 The software is used to designate which ACPs are included as crew during Isolation mode selection of call time out and duration the type of ICS tie line and the error messages 2 5 2 2 ACP Profiles There are seven ACP Profiles ACP1 through ACP6 and Virtual ACP which are configured through the DevCs and loaded into the AMUSO Each ACP profile is configured for Transceiver Access Transmitter Access Receiver Access Direct Audio Access Direct Audio Levels ISO CALL Functionality Auto Receive Levels Call Tone Levels Isolation Override ICS Level Audio Muting During Transmit Dir
22. L C 27500 CABLE LENGTH NOT TO EXCEED 0 7 FT 0 2 1 GROUND ONLY ONE WINCHMAN SELECT LINE TO DETERMINE WHICH ACP WILL CONTROL THE USER 7 WINCHMAN POSITION CABLE LENGTH NOT TO EXCEED 1 FT 0 3 M SYSTEM CROSSTALK WILL BE AFFECTED BY STYLE OF HEADSET AND JACK CHECK SPECIFICATIONS AND SYSTEM REQUIREMENTS BEFORE SELECTING AND INSTALLING SAME CABLE LENGTH NOT TO EXCEED 16 4 FT 5 0 M SHIELDS SHOULD BE GROUNDED TO CONNECTOR BACK SHELL METAL TYPE PROVIDE SHORT RETURN TO AIRFRAME GROUND USB AIRFRAME CONNECTOR 15 CUSTOMER SUPPLIED AND INSTALLED TOTAL CABLE LENCTH BETWEEN AMUSO AND COMPUTER NOT TO EXCEED 3 3 FT 1 0 1 CABLE LENGTH NOT TO EXCEED 65 6 FT 20 0 1 gt gt CABLE LENGTH NOT EXCEED 3 3 FT 1 0 M OUTPUT 15 GROUNDED WHEN FUNCTION 15 ACTIVATED OUTPUT IS ABLE TO SINK 1 Amp MAX PROVIDES GROUND TO DF RECEIVER WHEN ANY TRANSCEIVER IS KEYED THE RADIOS DEFINED IN THIS DRAWING ARE AN EXAMPLE OF ONE CONFIGURATION SETUP USING THE AMUSO CONFIGURATION SOFTWARE EACH RT OR RX INPUT CAN BE CONFIGURED TO A SPECIFIC FUNCTION AS REQUIRED DIRECT 1 2 AND 5 ARE MAINTAINED IN EMER MODE DIRECT 6 IS DISABLED WHEN ANALOG ICS TIE IS ENABLED CABLE LENGTH NOT TO EXCEED 16 4 FT 5 0 M gt gt gt WHEN THE ANALOG TIE LINE IS ENABLED TIE LINE LOADING MUST BE EQUIVALENT TO 1000 OHMS SEE SHEET 6 FOR EXAMPLES OF LOADING CONNECTIONS IF ACP2 IS NOT USED PIN 42 OF J102 SHOULD BE GROU
23. NDED ONLY ONE TIE LINE SETTING ANALOG OR DIGITAL CAN BE SELECTED THE REMOTE MEMORY UNIT RM01 WILL ONLY UPLOAD CONFIGURATION DATA THE AMU50 WHEN THE WEIGHT ON WHEELS WOW SWITCH IS ACTIVATED AND THE USB PORT 15 NOT CONNECTED TO LAPTOP PC THE AMUSO WILL START UP IN MAINTENANCE MODE IF THE WEIGHT ON WHEELS WOW SWITCH IS ACTIVATED AND THE USB PORT IS ACTIVE WHEN THE POWER IS APPLIED TO THE AMUSO REFER TO 5 76 50 001 INSTALLATION AND OPERATION MANUAL SECTION 2 4 4 2 FOR CONNECTIONS OF NORM AND EMERG POWER INPUTS gt gt DEFINITIONS NO CONNECTION THE PIN 15 NOT CONNECTED TO ANYTHING INTERNALLY AND THEREFORE SHALL HAVE NO CONNECTION EXTERNALL Y N C SPARE NO CONNECTION INTERNALLY BUT A SPARE WIRE SHALL BE INSTALLED IN THE WIRE HARNESS RESERVED MAY BE CONNECTED AND USED IN THE FUTURE THE CIRCUITRY MAY BE PRESENT OR ADDED TO ACTIVATE THE FUNCTION THE PIN MAY USED FOR TEST PURPOSES THERE 5 NO EXTERNAL CONNECTION RESERVED SPARE RESERVED BUT INSTRUCTIONS SHALL BE FOLLOWED TO ACTIVATE RSV SP THE CIRCUITRY A SPARE WIRE SHALL BE INSTALLED IN THE WIRE HARNESS CONFIDENTIAL AND PROPRIETARY TO NAT LTD NORTHERN AIRBORNE TECHNOLOGY LTD V MWS AUDIO MANAGEMENT UNIT 255 SIZE CAGE CODE PART NO REV SHEET 405 0 DWG DWG TYPE INTERCONNECT DWG NO AMU50 001 403 0 P101 AMU50 001 J101 50 PIN MALE DMIN MATING CONNEC
24. O Og 000 0 06 4 4 d XX 0 1 15 Sod VOBI WG VIA 5 3ONVOSNOOOV NI IOL DONINOISN3NIC oo0o0o0o0o0 00000000000 NO CA 6 OOOO 68 gt 2 T 9 v91 899 v A CO 09 Iv 1209 pies 5 NOILVIN3IHO 1X4l 138 1 053 138V1 GION ALNVYYVM 2 RS AVM SIHL J NOILVLINSIYO 1X4L m lt gt gt lt JD S CA eo UD LET GeO St 616 Zoe SMW 60 70 AON X3L 831934800 888205002004 IEL SMW 80 S0 335 13877 ALNVYYVM 9 053 29203290Q0 0070 SMW 80 7 MdV YO4 2272042008 OL 43338 OC I SMW 20 7 SIIVLAG 60200542200 OL 83534 OLI NOL dINOS3G AY SNOISIASY SALON eoru ei Gc OO s nat m AMU50 001 Audio Management Unit Installation and Operation Manual Section 3 Operation 3 1 Introduction Information in this section consists of the functional and operational
25. O 214 Class Ib RTCA DO 160E RTCA DO 178B Level C Section 1 Rev 1 03 Issue 1 Page 1 8 ENG FORM 800 0116 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 9 AMU50 001 Audio Management Unit SM76 Installation and Operation Manual 1 4 4 2 EASA ETSO C50c When configured as defined in section 1 4 5 DACS System Equipment the Digital Audio Communication System with an AMU50 xxx which has MOD 15 incorporated is approved as follows EASA ETSO C50c RTCA DO 214 Class Ib RTCA DO 160E RTCA DO 178B level C When configured as defined in section 1 4 5 DACS System Equipment the Digital Audio Communication System with an AMU50 xxx which does not have MOD 15 incorporated is approved as follows EASA ETSO C50c RTCA DO 214 Class Ib RTCA DO 160E RTCA DO 178B level D 1 4 5 DACS System Equipment Product approvals listed in section 1 4 4 apply only to DACS systems configured using approved components as shown below 1 4 5 1 Required Equipment Approved System Component Part No Audio Management Unit AMUSO xxx MOD 12 and above Serial No 3000 and above Audio Control Panel 1 and 2 ACP53 xxx MOD 8 and above Serial No 3000 and above ACP54 xxx MOD 2 and above Serial No 3000 and above 1 4 5 2 Optional Equipment Approved System Component Part No Audio Control Panel ACP 3 to ACP 6 51 MOD 2 and above Serial 3000 and above ACP53 xxx MOD 8 a
26. P102 AMUSO 001 90 PIN MALE DMIN AUDIO PRODUCT MATING CONNECTOR ICS TIE HI 26 ICS TIE HI ICS TIE LO 43 ICE TIE LO RESISTOR 2k Ohm 1 2 W CAN BE ADDED AT AMU5O J102 OR AT JUNCTION BOX IF INSTALLED OPTION 45 NO NAT ANALOG AUDIO PRODUCT CONNECTED AMUSO REQUIRES 1k Ohm RESISTIVE LOAD P102 AMUS0 O01 J102 50 PIN MALE DMIN MATING CONNECTOR ICS TIE HI RESISTOR 1k Ohm 1 2 W ICS TIE LO 45 CONFIDENTIAL AND PROPRIETARY TO NAT LTD mat NORTHERN AIRBORNE TECHNOLOGY LTD beum omo ber AIGA 08 nme AUDIO MANAGEMENT UNIT CHECKED NOT 255 SIZE CODE PART NO SHEET ib 3AB01 50 001 124 6 6 FICE FILE 403 0 DWG O DWG DWG INTERCONNECT DWG NO AMU50 001 403 5 102 50 PIN MALE DMIN MATING CONNECTOR E S 50 PIN MALE DMIN MATING CONNECTOR IH OIN AHA IH c OVL IH OVL IH Vd 6 s3sn v 4450 9 450 IH MIO LOWS MIO LIONS QNO LOWY XL doy XL uv Xl v dOV XL xy XL 9 dO V XL 9 dov YMd LOWY IH OIN L AHA IH OIN OVL IH OVI S OVI OIN HASN JASN IH 6 450 OIN NVWHONIM Z 4350 TOA TOA XL XL l XL d V XL iav XL d V Xl S A35 YOLOANNOO AJA 2 AHA OT OIN AHA AJA
27. TO NAT LTD 9 NORTHERN AIRBORNE TECHNOLOGY LTD gt Z S 2 n Q 2 5 gt ou c lt AUDIO MANAGEMENT UNIT NAT 249 CHECKED AMUSO 001 CONNECTOR MAP DWG NO PART NO Ze eas COVE Se S APPROVED NAT P S 405 0 DWG DWG TYPE Ww e sr P e eo 2 O uw D gt lt PGE O ENVIRONMENTAL QUALIFICATION FORM Description Audio Management Unit Document AMU5010011521 0 NAT Part 050 001 TSO C139 Manufacturer s Specification and or Other Applicable Specification RTCA DO 160E RTCA DO 214 Northern Airborne Technology Ltd 1925 Kirschner Rd Kelowna BC Canada V1Y 4 7 Manufacturer Address Temperature and Altitude 4 Category A4 D1 Ground Survival Low Temperature 55 Short Time Operating Low Temp 5 45 C Operating Low Temperature 5 40 C Ground Survival High Temperature 5 1 85 C Short Time Operating High Temp 5 70 Operating High Temperature 25 70 C In flight Loss of Cooling 25 No forced air cooling Altitude 6 50 000 ft 415 240 m Decompression 6 8 000 ft to 50 000 ft 42 438 m to 15 240 m Overpressure 15 000 ft 4 752 m Temperature Variation Category B Humidity Category Operational Shocks and Crash Safety 7 0 Category
28. TOR gt 2 2 EET UM GP ew sj VHF 1 KEY KEY M IRE hc eis e 1 KEY KEY 21 2 as luper prm aT o We 5 KEY 2 p E E TAC 5 KEY KEY USER 1 MIC HI 22 RE x MIC HEADSET 1 USER 1 MIC LO LO JACK USER 5 MIC HI EE 20 AWG x HEADSET 3 USER 3 MIC LO v 20 AWG v JACK USER 5 MIC HI 20 AT x HEADSET 5 USER 5 MIC LO Y v JACK USER 7 WNCHMAN MIC HI i 22 e HEADSET 7 USER 7 WNCHMAN MIC LO JACK A TX SW USER 1 TX KEY USER 5 TX KEY USER 7 WINCHMAN TX KEY PAX VOL PAX VOL USB D USB D USB PWR USB GND 4 1 USER 5 TX KEY O Se ee usa ACP 1 TX 4 Kin pu Ee ACP 1 RX 12 1 TENE 13 oN ACP 1 NORM MODE 14 NORM MODE 3 fom 4 coe RAS A ACP 3 RX 12 ACP 3 RX 13 v ACP 3 PWR ZU AY 1 ACP 5 TX rN 4 5 TX Y 5 ACP 5 RX A 12 5N ACP 5 RX 1 5 5 PWR 1 1 WINCHMAN SELECT 3 WINCHMAN SELECT AA CONNECTOR KEY N C DESIGNED DATE JUN 26 07 JUN 26 07 AUDIO MANAGEMENT UNIT CHECKED NAT 255 D CAGE CODE PART NO REV SHEET 1 AMUS50 001 1 24 2 6 FILE 403 0 DWG O DWG DWG TYPE INTERCONNECT DWG NO AMU50 001 403 1 P102 50 001 102 50 MALE DMIN MATING CONNECTOR gt Ma
29. TT ALERT 5 O 0 T ALERT 5 5 O ALERT 7 WEIGHT ON WHEELS Ads O O T NORM CALL O ALERT CANCEL O DF MUTE Ad N C CONFIDENTIAL AND PROPRIETARY TO NAT LTD en NORTHERN AIRBORNE TECHNOLOGY LTD DESIGNED 2 NATN CAGE SIZE REV SHEET 3AB01 AMU50 001 1 24 4 6 FILE 403 0 DWG O DWG DWG TYPE INTERCONNECT DWG NO AMU50 001 403 3 AUDIO MANAGEMENT UNIT AMUSO0 001 VHF 2 RX HI VHF 2 RX LO TAC 2 RX HI TAC 2 RX LO TAC 4 RX HI TAC 4 RX LO PA RX HI PA RX LO NAV 2 RX HI NAV 2 RX LO MKR RX HI MKR RX LO AUX 1 RX HI AUX 1RX LO AUX 5 RX HI AUX 5 RX LO USER 2 PHN HI USER 2 PHN LO USER 4 PHN HI USER 4 PHN LO USER 6 PHN HI USER 6 PHN LO RX COMPOSITE OUT HI RX COMPOSITE OUT LO USER 2 CVR HI USER 2 CVR LO EMERG 28 VDC POWER EMERG POWER GROUND CHASSIS GROUND DIR 2 RX HI DIR 2 RX LO DIR 4 RX HI DIR 4 RX LO DIR 6 RX HI DIR 6 RX LO MUSIC RIGHT RX HI MUSIC RIGHT RX LO USER 2 ICS KEY USER 4 ICS KEY USER 6 ICS KEY EMERG BACKUP OUT ALERT 2 ALERT 4 ALERT 6 ALERT 8 ALERT INHIBIT HIGH PRIORITY CALL IN ISOLATION OVER RIDE IN CREW ISO OUT ALERT ACTIVE J104 P104 50 PIN FEMALE DMIN MATING CONNECTOR RX 2 2 2 DC 2 522 2 a 2 RX R
30. VOX level is reached the ICS shall still be gated but shall only require a small signal to open the ICS channel The Audio Management Unit supports six Direct Audio inputs to provide audio at a fixed level to the users The Direct Audio inputs heard by each of the users are configurable using the DACS DevCs The AMUSO has an eight channel Aural Alert Generator Each aural alert has a separate key input and the resultant aural alert signals may be either tone voice or tone and voice The Aural Alert inputs are configurable either as active HI or LO using the DACS DevCs The AMUSO provides a Direction Finder DF Blanking output This output deactivates the DF antenna to avoid causing it damage when users transmit on any transceiver Two separate power supplies are provided by AMUSO The primary power supply provides filtering and pre regulation before distributing power to the rest of the AMU The backup power supply provides power to specific sections of circuitry depending upon the currently selected operational mode A USB port is provided on the AMUSO for configuration programming The port is also used for extracting the PBIT and results The system configuration is downloaded into the AMU50 using the USB port and is stored in the Remote Memory enabling the replacement of the AMUSO without the need of downloading a new configuration file The AMUSO has three modes of operation Normal Mode Backup Mode and Emergency Mode
31. When the system is in Back up mode users 1 and 2 maintain full functionality via back up microphone and headphone amplifiers but all other headsets and ACPs are disabled This mode overcomes failures such as a crew headset amplifier failure or a failure of circuitry used to support passengers that may be adversely affecting the operation of the system Section 1 Rev 1 03 Issue 1 Page 1 2 ENG FORM 800 0116 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 3 nat AMU50 001 Audio Management Unit SM76 Installation and Operation Manual In Emergency mode all ACPs are deactivated and only User 1 and User 2 maintain a limited amount of functionality In this mode User 1 will be able to listen to COM1 Direct1 Direct2 Direct3 and all alerts at a fixed level and transmit on User 2 will be able to listen to COM2 NAV2 Direct1 Direct2 Direct3 and all alerts at a fixed level and transmit on 2 Both User 1 and User 2 will have keyed intercom audio at a fixed level Emergency mode disables the Digital Signal Processing software and provides the above functionality via analog technology 1 4 Specifications 1 4 1 Electrical Specifications POWER NORM and EMERG Power Inputs NORM 28 VDC Power EMERG 28 VDC Power Normal Operating Conditions Nominal input voltage 28 0 Vdc Maximum input voltage 30 3 Vdc Minimum input voltage 22 0 Vdc Emergency input voltage 18 0 Vdc Abnormal Operati
32. X RX 20 AWG 55 AWG E PAN HEADSET 2 LO JACK 20 AWG en HEADSET 4 UK HEADSET 6 RECORDER LO RX AUDIO BREAKER EMERG 28 VDC POWER DY EMERG POWER GROUND RX RX M RX E RX MUSIC LO RIGHT l ics sw 2 Q LL ics sw 4 a Su 5 SW 6 gt lt 2 544 2 X oe WEE Bae 2 gt K 20 AWC 20 AWC gt gt 521 2 pe Pd 2 IC 28 N ALERT 2 OL ALERT 4 O 0 T ALERT 6 _ ALERT 8 ALERT INHIBIT E HIGH PRIORITY CALL IN Ur _ ISOLATION OVER RIDE IN o m 28 voc N ap CONFIDENTIAL AND PROPRIETARY TO NAT LTD 28 VDC N sns penat NORTHERN AIRBORNE TECHNOLOGY LID IDATE _ NAT NANTN PART NO SIZE CAGE CODE KEV SHEET rer Gy 3AB01 AMU50 001 1 24 5 6 FILE 403 0 DWG O DWG DWG TYPE INTERCONNECT DWG AMU50N001M403 4 AUDIO MANAGEMENT UNIT OPTION 1 AMUSO CONNECTED TO TWO NAT ANALOG AUDIO PRODUCTS WITH 2k Ohm TIE LINE LOAD NAT ANALOC P102 AMUSO0 001 90 PIN MALE DMIN AUDIO PRODUCT MATING CONNECTOR ICS TIE HI ICE TIE LO NAT ANALOG AUDIO PRODUCT ICS TIE HI ICE TIE LO OPTION 2 AMUSO CONNECTED TO ONE NAT ANALOG AUDIO PRODUCTS WITH 2k Ohm TIE LINE LOAD AND ONE 2k Ohm RESISTIVE LOAD NAT ANALOC
33. Y TO NORTHERN AIRBORNE TECHNOLOGY LTD 9 AMU50 001 Audio Management Unit SM76 Installation and Operation Manual 2 5 2 6 Passenger Intercom Amplifier The software is used to select the passenger intercom volume VOX level music input level mic impedance and gain phone impedance and VOX off time 2 5 2 7 Composite Output The composite audio output components and volumes are selected through the DevCs 2 5 2 8 Transceivers The transceiver is enabled and the transmit mic receive audio and sidetone criteria for each transceiver is selected through the DevCs 2 5 2 9 Receivers The receivers direct inputs and music receiver are enabled and the associated audio input levels are selected through the DevCs 2 5 2 10 WAV Files The WAV files contain the tones chimes and voice alerts that are played when an alert is activated WAV files are loaded into the DevCs 2 5 2 11 Aural Alerts The aural alerts are enabled WAV file selected and priorities configured through the DevCs 2 5 2 12 Emergency Mode The DevCs is used to set up the emergency mode configurations for Users 1 and 2 2 5 2 13 Direct Audio Inputs The direct inputs are enabled and the associated audio input levels are selected through the DevCs 2 6 Accessories Required But Not Supplied Installation kit p n AMU50 IKC is required to complete the installation The kit consists of the following Quantity Description Part No 2 D Sub MIL Spec 5
34. an 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 circuit breaker or fuse fast blow and not attached to any other circuit breaker without additional protection Verify that the selected circuit breaker size and wire gauge are adequate for the installation using the techniques specified in AC43 13 1B Change 1 Paragraphs 11 47 through 11 51 and 11 66 through 11 69 Section 2 Rev 1 04 Issue 1 Page 2 3 ENG FORM 805 0120 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 3 nat AMU50 001 Audio Management Unit SM76 Installation and Operation Manual 2 4 4 1 Interconnect References The Interconnect AMU50 001 403 0 and Connector Map AMU50 001 405 0 show standard signal designations For information on the correlation between these designations and the Transmit Receive signal designations for a specific ACP refer to the Custom Designation Cross Reference List ACP5xVvoo 724 1 in the Installation and Operation section of the relevant ACP Service Manual 2 4 4 2 NORM and EMERG Power Inputs The NORM power input is active when the system is in NORM mode The EMERG power input is active when the system is in BK UP or EMERG modes If 28 Vdc power is lost on both NORM and EMERG power inputs then no audio is provided to any user If audio is required by users 1 and
35. bit switch is activated it is important note that no aural notification will be generated by the AMUSO for any alert situation A remote Alert Inhibit switch may be installed in the aircraft This switch acts as a mute switch for the aural alerts generated by the AMUSO it mutes all aural alert tones and or voice messages to all users Section 3 Rev 1 00 Issue 1 Page 3 2 ENG FORM 806 0113 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOCY LTD Jk nat m AMU50 001 Audio Management Unit Installation and Operation Manual 3 3 7 Audio Muting The can be configured to mute Direct Receive and or intercom audio when a user is transmitting on a transceiver The muting is configured on a per ACP basis using the DevCs Intercom Radio transceiver and receiver Direct and Aural Alert Audio will mute the Music audio When the action that caused the Music to mute has ended the Music progressively returns to the previous level 3 3 8 EMERG BACKUP Indicator An output is supplied to allow an external EMERG BACKUP indicator to be installed The indicator will illuminate if the AMUSO is in Backup or Emergency mode 3 3 9 Passenger Intercom The AMUSO provides an audio accessory serial data port for connecting a passenger intercom device The Voice Operated ICS VOX level for the passengers not assigned to an ACP53 is set in the DACS DevCs The highest VOX level threshold acts as the keyed mode of operation an
36. ced Section 1 Rev 1 03 Issue 1 Page 1 6 ENG FORM 800 0116 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 9 AMU50 001 Audio Management Unit SM76 Installation and Operation Manual Discrete Outputs All the following outputs have these specifications unless stated otherwise Logic Active LO switched ground Output Active lt 2 Q Current 1 A maximum Transmit Push To Talk Outputs Quantity Eight Crew Isolation Output CREW ISO OUT Quantity One Aural Alert Active Output ALERT ACTIVE Quantity One DF Blanking Output DF BLANKING OUTPUT Quantity One Emergency Mode Active Output EMERG BACKUP OUT Quantity One BI DIRECTIONAL PORTS USB Port Quantity One USB 2 0 for programming ICS Tieline The ICS tie line can be configured using DevCs for analog or digital operation Analog Quantity One Output Impedance 2000 10 Rated Level 230 mVrms into 1000 ohms 15 Circuitry Type Balanced Digital Quantity One Specification RS422 Serial Data Protocol SP DIF 1 4 1 1 Audio Performance The AMU50 meets the requirements of FAA TSO C139 EASA ETSO C50c and RTCA DO 214 Class Ib Audio Frequency Response lt 3dB from 300 6000Hz Volume Controls 40dB of adjustment individual receive audio and intercom audio 30dB of adjustment master receive audio Section 1 Rev 1 03 Issue 1 Page 1 7 ENG FORM 800 0116 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TEC
37. d products are warranted for 2 years from date of installation by an authorized dealer to be free of defects in workmanship or performance This warranty covers all materials and labour but is exclusive of any transport to deliver the defective unit to and from Northern Airborne Technology or its designated warranty repair center or any labour to remove or re install the defective unit in the aircraft Contact Northern Airborne Technology for any questions regarding this warranty its applicability to your units and or for return authorization Northern Airborne Technology is the final arbitrator concerning warranty administration Units which have been physically damaged burned immersed in water or otherwise abused beyond the scope of normal use will not be considered for warranty WARRANTY IS VOID UNLESS THE PRODUCT IS INSTALLED BY AN AUTHORIZED Northern Airborne Technology DEALER Product for which a warranty card is not returned shall be warranted from date of manufacture 2 3 Continued Airworthiness Maintenance of the AMU50 001 Audio Management Unit is on condition only Periodic maintenance of this product is not required 2 4 Installation Procedures 2 4 1 Warnings WARNING High volume settings can cause hearing damage Set the headset volume control to the minimum volume setting prior to conducting tests and slowly increase the headset volume to a comfortable listening level Section 2 Rev 1 04 Issue 1 Page 2 1 ENG
38. d the VOX circuit shall not gate the microphone audio In this mode the MIC audio can only be gated using the ICS PTT input When the lowest VOX level is reached the ICS shall still be gated but shall only require a small signal to open the ICS channel 3 3 10 Passenger ICS Volume AMUSO supports two Passenger ICS Volume Inputs for adjusting the passenger ICS Audio Level Activating the positive Passenger ICS Volume Pin increases the volume and activating the negative Passenger ICS Volume Pin decrease the volume The Passenger ICS Level Variable default value is configured using the DevCs application 3 3 11 Winchman Select AMUSO supports three Winchman inputs to allow the winchman to be associated with ACP 1 through If more than one Winchman Input is active the winchman adopts the pre programmed assignment 3 3 12 NORM Call High Priority Call ISO Override Support is provided for a Normal ICS Call input a High Priority ICS Call input and an Isolation Override input These Call inputs are used by passengers without an ACP to call the crew when they have been isolated When the Isolation Override input becomes active the Isolation Mode is temporarily suspended and the passengers can communicate with the crew members Section 3 Rev 1 00 Issue 1 Page 3 3 ENG FORM 806 0113 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD AMU50 001 Audio Management Unit Installati
39. dio at a fixed level Emergency Mode disables the Digital Signal Processing software and provides the above functionality using analog technology 2 4 4 4 Routing of Power Lines RTCA DO 160E Section 22 Lightning Induced Transient Susceptibility testing of the AMUSO cable bundles was conducted with the 28 Vdc power lines bundled with the control signal leads To maintain the equipment lightning protection the power lines must be bundled with the control signal lines in the aircraft installation Section 2 Rev 1 04 Issue 1 Page 2 4 ENG FORM 805 0120 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 9 AMU50 001 Audio Management Unit SM76 Installation and Operation Manual 2 4 4 5 Aural Alerts The AMUSO can provide up to eight supplemental aural alerts Each aural alert consists of one or two audio data files which are played consecutively The priority repetition activation enabled output audio level and audio data files for each Aural Alert can be configured using the DevCs application CAUTION These alerts must not be used for primary aircraft warnings audio for primary aircraft warnings should be generated externally to the and connected to the AMUSO direct audio inputs CAUTION Ensure that at least one valid WAV file is assigned to each alert that is enabled When an enabled alert is activated for which no valid WAV file has been assigned alert audio for all alerts will not be
40. e configured logic active Hi or active Lo triggered for each Aural Alert is configured using the DevCs application This input is operational with the AMU50 configured in all modes 2 4 4 6 6 Aural Alert Inhibit ALERT INHIBIT When the Aural Alert Inhibit input is activated the AMU50 will mute all active Aural Alert messages New aural alerts that become active while the Aural Alert Inhibit input is active will be muted Deactivating the Aural Alert Inhibit input will cause any aural alerts that are still active to play This input is operational with the AMU50 configured in all modes 2 4 4 6 7 Aural Alert Cancel ALERT CANCEL If a cancellable alert is playing activating the Aural Alert Cancel input will cancel the alert even if the trigger condition still exists Even if the alert is cancellable an alert will be played at least once before the cancellation will take effect A new cancellable alert triggered after the Aural Alert Cancel input is activated will be unaffected The DevCs application may be used to configure any Aural Alert generated by the AMU50 as cancellable or not cancellable This input is operational with the AMU50 configured in all modes 2 4 4 6 8 Weight On Wheels Input WEIGHT ON WHEELS The Weight On Wheels input must be open circuit when the aircraft is in flight CAUTION The will start up in Maintenance Mode if the Weight On Wheels input is grounded and the USB port is active when power is appl
41. e connected into the system Note Confirm the specific criteria associated with this installation with your installing agency 3 3 1 Audio Control Panels The Audio Control Panels are the operator interface with the AMU and the digital audio communications system For information on the operation of the ACP refer to the relevant Installation and Operation Manual for example SM75 the ACP53 001 Audio Control Panel Service Manual All the operational and functional criteria for ACPs installed in a DACS are controlled by the AMU50 and configured through the DevCs For full information consult the DevCs manual 3 3 2 PTT Keys The AMUSO supports six TX PTT and seven ICS PTT keys Section 3 Rev 1 00 Issue 1 Page 3 1 ENG FORM 806 0113 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD s nat m AMU50 001 Audio Management Unit Installation and Operation Manual 3 3 3 Transmit Priority Transmit priority is given to the user who first engages the PTT and Transmit PTT is given priority over ICS PTT 3 3 4 Aural Alerts Note The Aural Alerts are configured at installation and cannot be modified selected or changed in any way by the operator or through the ACP This is included for information purposes only Up to eight aural alerts can be configured at installation and can consist of tones voice messages or a combination of both played once only or repeated Repeated aural alerts can be configured to
42. e loss of the entire system due to failure of one connection It provides a redundant power supply redundant amplifiers for the crew microphones MIC and headphones PHN redundant amplifiers for the first three direct audio inputs and multiple modes of operation The Power On Built In Test PBIT function provides fault analysis down to the LRU level while the Continuous Built In Test is a background task that verifies hardware functionality on an ongoing basis 1 2 2 System Configuration The DACS is configurable on a per installation basis using the AMU50 connected via a Universal Serial Bus USB port to a Personal Computer PC running the DACS Device Configuration Software DevCs system configuration is stored the and the Remote Memory The DevCs is a PC application that allows a user to control adjustments and functions of the DACS Digital Audio Communication System equipment including the AMU50 and the ACPs The PC Application provides a graphical user interface for the display and control of the adjustment levels and function behaviour or configuration The configuration can be saved as a file The configuration can be written to and read from the DACS equipment over a serial data communication buss Section 1 Rev 1 03 Issue 1 Page 1 1 ENG FORM 800 0116 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 3 nat AMU50 001 Audio Management Unit SM76 Installation and
43. ect Audios Radio Audio ICS VOX Preset Level Transceiver Receive Audio Level After ACP Failure Transceiver Receive Audio Level Receiver Receive Audio Level After ACP Failure Receiver Receive Audio Level ICS Level After ACP Failure ICS Level VOX Level After ACP Failure and Virtual VOX Level 2 5 2 3 User Profiles The User Profiles are parameters for each of the seven users which are configured through the DevCs and loaded into the AMUSO Each User Profile consists of ACP Assignment see 2 5 2 4 below Music Access Music Level Alert Access Alert Level Microphone Impedance selected from a choice of three values Microphone Gain Headphone Impedance VOX Off Delay Time and Alert Muting During Transmit 2 5 2 4 ACP Assignment User 1 must always be assigned to ACP 1 and User 2 must always be assigned to ACP 2 Users 3 to 7 include the ability for each user to be assigned to an ACP or Virtual ACP ACP Assignment in a User Profile can be a virtual ACP The virtual ACP controls which audio sources the user can listen to and at what level The virtual ACP also controls which radio a user can transmit on what audio is being muted during transmit the level of the call tones and the level of the ICS audio when isolation mode is temporarily suspended ISO Override 2 5 2 5 Cockpit Voice Recorder The output volume level can be selected Section 2 Rev 1 04 Issue 1 Page 2 11 ENG FORM 805 0120 DOT CONFIDENTIAL AND PROPRIETAR
44. ibit Input Alert Inhibit Quantity One Weight On Wheels Input WEIGHT ON WHEELS Quantity One Normal Mode Enable Input ACP 1 NORM MODE and ACP 2 NORM MODE Quantity Two one for User 1 and one for User 2 Backup Mode Enable Input ACP 1 BACKUP MODE and ACP 2 BACKUP MODE Quantity Two one for User 1 and one for User 2 Winchman Select Inputs ACP 1 WINCHMAN SELECT thru ACP 3 WINCHMAN SELECT Quantity Three associated with ACP 1 through ACP 3 Aural Alert Inputs Alert 1 thru Alert 8 Quantity Eight Maximum Current lt 10 mA Input Protection Diode protected to 45 Vdc maximum Active LO Configuration configured through the DevCs application Logic Active LO switched ground no external pull up required Input Active lt 3 Active HI Configuration configured through the DevCs application Logic Active Hl switched power no external pull down required Input Active 2 18 Normal Call Input NORM Call in Quantity One High Priority Call Input High Priority Call in Quantity One Isolation Over ride Input Isolation Over ride in Quantity One OUTPUTS The AMUSO provides the following outputs to the aircraft Audio Outputs Headphone Outputs Three headphone impedances available User 1 and User 2 headphone impedances must be the same User 3 through User 7 headphone impedances are independently configurable Quantity Seven Mono PHN configured through DevCs application Rated Output 2250 mW into rated load C
45. ied to the unit The AMUSO must not be operated in maintenance mode during flight Section 2 Rev 1 04 Issue 1 Page 2 6 ENG FORM 805 0120 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 3 nat AMU50 001 Audio Management Unit SM76 Installation and Operation Manual The will communicate with the 01 to verify and download configuration data from the RMO 1 if the Weight On Wheels input is grounded when power is applied to the unit or the AMUSO mode is changed using the Mode Control switch If the Weight On Wheels input is not grounded the 5 will use internally stored configuration data This is intended to minimise start up delay if power to the AMUSO is cycled in flight or if the AMUSO mode is changed using the Mode Control switch This input is operational with the AMU50 configured in all modes 2 4 4 6 9 Winchman Select ACP 1 WINCHMAN SELECT thru ACP 3 WINCHMAN SELECT The winchman position is User 7 By using an external 4 position rotary switch to ground one of the Winchman Select pins J101 pin 46 or 48 J102 pin 46 the winchman position can be associated with ACP 1 2 or 3 and will adopt all the features associated with that ACP If no winchman input is active or more than one winchman input is active the winchman returns to the pre programmed ACP assignment This input is operational with the AMU50 configured in Normal mode only 2 4 4 7 Interconnect Outputs 2
46. in 9 or 10 for continuity to ground less than 0 5 when the relevant switch is closed Either pin 46 or 48 1 or 3 winchman select for continuity to ground less than 0 50 if installed Check connector P102 for the following a Pins 38 39 and lt 40 gt for continuity to ground less than 0 50 when the relevant switches are closed b Pin 46 2 winchman select for continuity to ground less than 0 5Q if installed Check connector P103 for the following a Pin 16 Norm 28 VDC power for 28 Vdc relative to ground b Pin 17 Norm power ground for continuity to ground less than 0 50 Pins 43 44 45 and 46 ICS for continuity to ground less than 0 50 when the relevant switches are closed d Pin 34 for chassis ground e Pins 47 48 49 and lt 50 gt Alerts for proper connection and operation as per the applicable aircraft installation requirements Note Alerts are configurable as either HI or LO and can be used for various supplemental warning operations f Pins 31 14 and 15 for continuity to ground less than 0 50 when the relevant switches are closed Check connector P104 for the following a Pin 16 Emerg 28 VDC power for 28 Vdc relative to ground Note This pin must be connected to BACK UP 28 Vdc power the Essential Emer DC Power Buss b Pin 17 Emerg power ground for continuity to ground less
47. ircuitry Type Balanced Section 1 Rev 1 03 Issue 1 Page 1 5 ENG FORM 800 0116 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 9 AMU50 001 Audio Management Unit SM76 Installation and Operation Manual Headphone Type One Load Impedance 8 10 Output Impedance 2 25 Q Headphone Type Two Load Impedance 150 10 Output Impedance x20 Headphone Type Three Load Impedance 600 10 Output Impedance lt 60 Transceiver Microphone Outputs Quantity Eight Output Impedance lt 600 Circuitry Balanced and AC coupled Rated Output 250 mVrms into 50 10 Output Range 11 mVrms to 1 1 Vrms 2160 steps logarithmic Composite Audio Output Quantity One Output Impedance 150 Rated Output 2 5 Vrms or 500 mVrms into 600 ohms 10 Circuitry Type Balanced Cockpit Voice Recorder Outputs User 1 CVR and User 2 CVR User 1 CVR is User 1 summed MIC and headphone audio and User 2 CVR is User 2 summed MIC and headphone audio Quantity Two Load Impedance 5 10 Output Impedance 600 across rated frequency range Rated Output 500 mVrms into rated load in normal mode 10 500 mVrms into rated load in emergency mode 50 30 Output Level Configurable through DevCs application providing 40 2 dB of control Output Range Normal Mode 9 mVrms to 900 mVrms 264 steps Emergency Mode 10 mVrms to 900 mVrms 65 steps Circuitry Type Balan
48. nd above Serial No 3000 and above ACP54 xxx MOD 2 and above Serial No 3000 and above Remote Memory RM01 xxx MOD 3 and above Serial No 3000 and above Installation instructions for the Audio Control Panels and Remote Memory are available in the following manuals SM75 ACP53 xxx SM77 01 SM81 ACP51 xxx SM82 ACP54 xxx Refer to section 2 4 2 Cautions Installation Limitations for details of configuration settings required for TSO C139 and ETSO C50c compliance Section 1 ends Section 1 Rev 1 03 Issue 1 Page 1 9 ENG FORM 800 0116 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 3 nat AMU50 001 Audio Management Unit SM76 Installation and Operation Manual Section 2 Installation 2 1 Introduction Information in this section consists of unpacking and inspection procedures installation procedures post installation checks and installation drawings for the AMU50 001 Audio Management Unit AMU50 Review all notes warnings and cautions 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 Check that all items listed below are present before proceeding and report any shortage immediately to your supplier Warranty Card Certificate of Conformity or Release Certification 2 2 1 Warranty All Northern Airborne Technology Lt
49. nect in section 2 7 for example loading connections This output is operational with the AMU50 configured in Normal and Backup modes only 2 4 4 8 5 Music Inputs MUSIC RIGHT LEFT RX The preset music input audio gain level and the ability for each user to access music is configured using the DevCs application These inputs are operational with the AMU50 configured in Normal or Back up modes only 2 4 4 8 6 Cockpit Voice Recorder Outputs CVR1 CVR2 The CVR1 output consists of Phones and continuous live mic Audio from User 1 The CVR2 output consists of Phones and continuous live mic Audio from User 2 These outputs are operational with the configured in all modes Section 2 Rev 1 04 Issue 1 Page 2 8 ENG FORM 805 0120 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 3 nat AMU50 001 Audio Management Unit SM76 Installation and Operation Manual 2 4 4 9 Universal Serial Bus USB AMUSO has one USB 2 0 port which is used for uploading and downloading configuration settings using the DevCs The port is only for use during maintenance and must not be connected during flight 2 4 5 Post Installation Checks 2 4 5 1 Voltage Resistance Checks Do not attach the AMU50 001 until the following conditions are met Check connector P101 for the following a Pins 38 39 40 and 41 for continuity to ground less than 0 50 when the relevant switches are closed b Either p
50. ng Conditions Maximum input voltage 32 2 Vdc Minimum input voltage 20 5 Vdc Maximum Current 2 6 28 0 with 6 ACPs connected and lights at maximum Power Outputs for ACP ACP 1 PWR thru ACP 6 PWR Quantity Six Output Voltage 25 5 Vdc Nominal with 28 0 input to the AMU50 Maximum Current 0 25A 25 5 Power Output RM01 RM01 PWR Quantity One Output Voltage 5 10 Nominal Maximum Current 0 10 A 5 INPUTS Audio Inputs MIC Inputs Three microphone impedances available User 1 and User 2 microphone impedances must be the same User 3 through User 7 microphone impedances are independently configurable Quantity Seven configured through DevCs application Gain Independently adjustable from 9 dB to 6 dB of nominal input level 1dB with 15 steps of adjustment Section 1 Rev 1 03 Issue 1 Page 1 3 ENG FORM 800 0116 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 3 nat AMU50 001 Audio Management Unit SM76 Installation and Operation Manual Microphone Type One dynamic Input impedance 5 30 Rated Input 250 uVrms nominal to produce rated headphones output Circuitry Type Differential Microphone Type Two dynamic Input impedance 75 30 Rated Input 850 uVrms nominal to produce rated headphones output Circuitry Type Differential Microphone Type Three amplified dynamic electret Input Impedance 150 10 Rated Input 250 mVrms
51. o 2 4 4 8 1 Receive Audio Inputs The Receive Audio levels and access to Receive Audio inputs from ACPs are configured using the DevCs application These inputs are fully operational with the AMUSO configured in Normal and Backup modes Only transceivers 1 and 2 and receivers 1 and 2 are operational in Emergency mode 2 4 4 8 2 Direct Audio Inputs DIR 1 RX thru DIR 6 RX The Direct Audio Inputs should be used for aircraft audio warnings The Direct Audio levels and which user headsets include Direct Audio are configured using the DevCs application If the ICS tie line is set to analog the Direct 6 audio input is disabled These inputs are fully operational with the AMU50 configured in Normal and Backup modes Only Direct Inputs 1 2 and 3 are operational in Emergency mode 2 4 4 8 3 Composite Audio output The Composite Audio output with two preset levels is a summation of selected audio inputs It is configured using the DevCs application This output is operational with the AMU50 configured in Normal and Backup modes only 2 4 4 8 4 ICS Tieline The AMUSO can support ICS communications with an external device on either an analog tieline or a digital tieline but not both The analog digital setting is configured using the DevCs application When the tieline is configured as analog the tieline loading must be equivalent to 1000 Ohms The tieline must be set to ANALOG mode when connecting multiple AMUSO units together See the Intercon
52. on and Operation Manual 3 3 13 Other Switches and Indicators Other remote switches and indicators may be installed Section 3 ends Section 3 Rev 1 00 Issue 1 Page 3 4 ENG FORM 806 0113 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD
53. procedures for AMU50 001 Audio Management Unit AMUSO The AMUSO Audio Management Unit has no operator accessible controls If the AMUSO is part of the Northern Airborne Technology Ltd Digital Audio Communications System DACS all modifications to the operating parameters are made through the Device Configuration Software DevCs For full information consult the DevCs manual The AMUSO controls the functionality of all the components of an aircraft s communications system including but not limited to the Audio Control Panels ACPs and external switches The general functionality of these components is outlined in section 3 3 below 3 2 General Information The 5 Audio Management Unit is part of the Digital Audio Communication System DACS a management system that distributes and controls all of the transceiver receiver and warning source audio in an aircraft It enables the transmission of microphone audio to a selected Transceiver and distributes all Inter Communication System ICS audio The primary component of the DACS is the AMUSO Connected to this Line Replaceable Unit LRU are the user headsets transceivers receivers and the ACPs The AMU50 also has an audio accessory port that enables the connection of a unit for providing ICS audio in the cabin 3 3 Control Functionality The be configured to control the functionality of any ACPs and a variety of external switches and indicators that ar
54. ted to a clean metal surface which is electrically bonded to the aircraft ground plane The unit is finished with a coating which prevents corrosion This film is electrically conductive and should not be removed for electrical bonding 2 4 4 Cabling and Wiring All wire shall be selected in accordance with the original aircraft manufacturer s Maintenance Instructions or AC43 13 1B Change 1 Paragraphs 11 76 through 11 78 Unshielded wire types shall qualify to MIL W 22759 as specified in 43 13 1 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 connector map in Section 2 7 as required Allow 3 from the end of the shielded wiring to the shield termination to allow the connector hood to be easily installed Reference the interconnect drawing in Section 2 7 for shield termination details Note that the hood is a clamshell hood and is installed after the wiring is complete Maintain wire segregation and route wiring in accordance with the original aircraft manufacturers Maintenance Instructions Unless otherwise noted all wiring shall be a minimum of 22 AWG except power headphones mic and ACP power lines which shall be a minimum of 20 AWG Reference the Interconnect drawing for additional specifications Check that the ground connection is cle
55. than 0 50 Pin 34 Chassis ground for continuity to ground less than 0 50 Section 2 Rev 1 04 Issue 1 Page 2 9 ENG FORM 805 0120 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 9 AMU50 001 Audio Management Unit SM76 Installation and Operation Manual d Pins 43 44 and 45 ICS for continuity to ground less than 0 50 when the relevant switches are closed e Pins 47 48 49 and lt 50 gt Alerts for proper connection and operation as per the applicable aircraft installation requirements Note Alerts are configurable as either HI or LO and can be used for various supplemental warning operations f Pins 31 14 and 15 for continuity to ground less than 0 50 when the relevant switches are closed 2 4 5 2 Power On Checks Power up the aircraft s systems and confirm normal operation of all functions of the system For a Northern Airborne Technology DACS system refer to Section 3 of this manual and to the Operation section of the applicable audio control panel manual for specific operational details To verify proper operation all functions and levels shall be checked in flight Upon satisfactory completion of all performance checks make all required log book entries electrical load weight and balance amendments and other documentation as required by your local regulatory agency before releasing the aircraft for service 2 5 Adjustmen
56. ts and Configuration 2 5 1 Maintenance Mode The AMUSO has no external adjustments All modifications to the configuration settings of the AMUSO are made in maintenance mode via the USB port using a computer running the Device Configuration Software DevCs application Refer to sections 2 4 4 6 8 Weight On Wheels Input and 2 4 4 9 Universal Serial Bus for additional information Connect a USB cable from the AMUSO USB port on the aircraft to the USB port on the PC running the DevCs Cycle the 28 power to the AMUSO to initiate a restart The AMU50 will start up in maintenance mode which allows configuration settings to be adjusted when the following conditions are satisfied 1 The AMUSO detects a connection to its USB port 2 Weight on wheels input is true pin 31 of J103 is grounded The configuration for the AMU50 can be changed as required using the DevCs For full information consult the DevCs manual Note When new configuration data is written to the AMU50 using the Program AMU50 function of the DevCs the same data should also be written to the RMO1 using the Program RMO1 function of the DevCs If the new configuration data is not written to the RMO1 then the original RM01 configuration data will overwrite the new configuration data stored in the AMU50 when the AMUSO is restarted in operational mode This note applies only if an is installed Section 2 Rev 1 04 Issue 1 Page 2 10 ENG FORM 805 0120 DOT CONF

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