SM56 - Northern Airborne Technology
Contents
1. RESERVED RESERVED RSV SP AUDIO HI RSV SP AUDIO LO AUD RSV SP LO DPLR AUDIO HI DPLR AUDIO LO AUD DPLR LO DIRECT AUDIO HI DIRECT AUDIO LO FP P ff n LY XX o LY MUSIC L AUDIO H MUSIC L AUDIO LO MUSIC R AUDIO H MUSIC R AUDIO LO HI LO MUSIC HI LO 2 555 2 DOCTOR H S DOCTOR H S H S DOCTOR LO JACK gt lt SE NURSE H S H S NURSE NURSE H S LO JACK 2 AA9X OR 54 5 TIE 16 ICS TIE HI ICS TIE L 55 ICS TIE LO 3 lt 274 EC gt C D D 20 e e z gt ESIGNED DRAWN DATE AUDIO CONTROLLER CHECKED gt SIZE CODE PART NO REV SHEET APERTE 95 729 1 01 3 3 FILE 405 2101 DWG DWG INTERCONNECT DWG NO AA95N729M403 2 REVISIONS DESCRIPTION DATE ECR 600 FORMAT CHANGES DRAWING CORRECTIONS OCT 18 96 ECR 779 PINS 26 43 WERE LABELED ATND 1 MAY 8 97 P102 28 VDC LIGHTS IN FEMALE DMIN NG CONNECTOR OM lt ADMMMA QI 2mm r lt 718 10 12 15 14 15 16 17 118 19 ala 9 11 AUDIO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 AUDIO COMMON2. 1 97 402 1411173 FILE 905 0 DWG DWG TYPE FACEPLATE DWG NO AA97N402N905 0 0110 DWT 2 50 63 5 1 03 26 0 EST 7 00 177 9 MAX MISC PRODUCT LABEL gt lt co CN s 5 B 6666660009 _ Z VHF VHF4 TAC TAC NAV2 DME 2 Rx VOL 1 1 2 5 x KE ISO EMR TX PA Ak ANICS VOL 6 8 08 MON VHF1 Y 3p LIVE Mj CENTER OF GRAVITY 3 02 76 7 77 146 T 5 77 146 6 MAX 1 DIMENSIONING AND TOLERANCING Ma usss CONFIDENTIAL PROPRIETARY TO LTD P INCHES n nat NORTHERN AIRBORNE TECHNOLOGY LTD ARE INCHES mm BRAWN ME THIRD ANGLE E DATE JUL 26 02 LX E X om AUDIO CONTROLLER MASS 220 241 sas TA SIZE CAGE CODE PART NO REV SHEET ME AA97 402 1 00 1 1 FILE 922 0100 DWG DWG TYPE MECH INSTALLATION DWG NO AA97N402N922 0 a C AA9x Series Single Channel Audio Controller SM56 Ins
3. O AA96 SJ TOWER 001 VOL 5 CONFIDENTIAL PROPRIETARY LTD k nat NORTHERN AIRBORNE TECHNOLOGY LTD DESIGNED DRAWN DATE JAN AUDIO CONTROLLER NAT PROS CHECKED FRONT VIEW F SIZE CAGE CODE PART NO REV SHEET 96 001 1 11 1 3 FILE 905 0 DWG DWG TYPE FACEPLATE DWG NO AA96N001N905 0 REVISIONS DESCRIP TION DATE ECR 41185 FORMAT CHANGES JUNE 2 98 AA96 400 INSTALLATION NOTES NOTES A ALL WIRES SHOULD BE 22 AWG UNLESS OTHERWISE NOTED USE TEFZEL M27500 OR 5 44 81044 SHIELDED WIRE WITH SOLDER SLEEVES A 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 A DO NOT GROUND MICROPHONE OR HEADSET LO CONNECTIONS TO AIRFRAME DEFINITIONS 0 CONNECTION THE PIN 15 CONNECTED TO ANYTHING TERNALLY AND THEREFORE SHALL HAVE NO CONNECTION EXTERNALLY 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 CIRCUITRY MAY BE PRESENT OR ADDED TO ACTIVATE THE FUNCTION THE PI AY BE USED FOR TEST PURPOSES IHERE IS NO EXTERNAL CONNECTI
4. lt gt NORMAL LIVE CONFIDENTIAL AND PROPRIETARY TO NAT LTD DESIGNED KV T SEAIN TCN Anat NORTHERN AIRBORNE TECHNOLOGY LTD DATE MAR 1 95 AUDIO CHECKED CONTROLLER 5 SIZE CAGE CODE PART NO REV SHEET APEROVED 3AB01 95 728 1 02 1 2 FILE 905 0 DWG DWG TYPE FACEPLATE DWG NO AA95N728N905 0 ENG FORM 905 s AA95 xxx 905 0110 DWT 95 729 INSTALLATION NOTES NOTES A ALL WIRES SHOULD BE 22 AWG UNLESS OTHERWISE NOTED USE TEFZEL M27500 OR SPEC44 M81044 SHIELDED WIRE WITH SOLDER SLEEVES A 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 A DO NOT GROUND MICROPHONE OR HEADSET LO CONNECTIONS TO AIRFRAME gt ADJUSTABLE LEVEL DIRECT AUDIO INPUT AMPLIFIED A AIRCRAFT ENTERTAINMENT SYSTEM MUSIC MUST BE GROUND REFERENCED IF NOT A FLOATING GROUND ADAPTER BETWEEN THE AUDIO CONTROLLER AND ENTERTAINMENT SYSTEM WILL BE REQUIRED DEFINITIONS 76 CONNECTION THE PIN 15 NOT CONNECTED TO ANYTHING INTERNALLY AND THEREFORE SHALL HAVE NO CONNECTION EXTERNALLY C SPARE O CONNECTION INTERNALLY BUT A SPARE WIRE SHALL BE INSTALLED IN THE WIRE HARNESS RESERVED AY BE CONNECTED AND USED IN THE FUTURE THE CIRCUITRY MAY BE PRESENT OR ADDED TO ACTIVATE THE FUNCTION THE PIN
5. 3k nat Installation and Operation Manual 9 Series Single Channel Audio Controller AA96 TOWER 001 FAN ICS TIE sum uve VHF 2 TACI T T TAC4 JN n n n I di A di HF vHF4 TAC 111213 EMR T n i M ES C L T HF LIVE KEY ISSUE 4 01 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 2002 a C AA9x Series Single Channel Audio Controller SM56 Installation and Operation Manual IMPORTANT INFORMATION This manual has been produced to provide information unique to the AA9x Series Single Channel Audio Controller Some of this information has been published previously in the SM01 Service manual AA90 AMS40 Series Audio Controllers The information presented in this manual is for reference purposes only and is intended to provide general information that can be used by the installer technician to gain a fundamental understanding of the respective product It is not intended to cover all variations of the AA9x Series audio controllers Drawing packages for specific AA95 AA96 and AA97 units can be requested from NAT by contacting the Product Support Department Earlier versions of the AA9x Series prior to Serial number 6
6. C AA9x Series Single Channel Audio Controller SM56 Installation and Operation Manual Bi directional Signals Quantity 1 ICS tie channel Audio level 0 34 Vrms for NAT ICS tie Impedance 1 8 10 for NAT ICS tie input Circuitry Type Single ended Miscellaneous Annunciators Green LED will light for transmit operation 1 4 2 Physical Specifications AA95 AA96 AA97 Height 1 90 48 3 mm 1 90 48 3 mm 3 00 76 2 mm Depth 6 82 173 2 mm 6 82 173 2 mm 6 82 173 1 mm Width 5 00 127 0 mm 5 00 127 0 mm 5 75 146 1 mm Weight 2 1 Ibs 955 g 2 1 Ibs 955 g 2 5 Ibs 1 14 kg Mounting Dzus rail Faceplate Engraved acrylic edge lit panel Material Finish Chassis amp cover are 5052 H32 brushed aluminum with chromate conversion finish Connectors Male 50 pin amp 37 pin D submin connectors with slide locks 1 4 3 Environmental Specifications Temperature 20 to 55 C ambient 55 to 85 C survival Altitude 25 000 feet max Humidity 9596 Non condensing Vibration Shock Conforms to DO 160C Cat N 1 5 Unit Nomenclature AA95 512 VHF 1 VHF 2 RT1 RT2 RT3 RT4 XCVRs NAV AUX switched Nav Aids 2 unswitched alerts provided RX and ICS level controls ICS Call LED from rear controller ICS Tie Split switch AA95 728 Full pilot and co pilot support 2 Comm 2 FM and AUX XCVR positions 5 Nav Aids plus music input KEYED LIVE VOX ICS with front panel control 3 leve
7. 1 1437Y 13431 L S 1 NORTHERN E E Model No BORNE TECHNOLOGY Serial No Weight Power Date 3 65 92 7mm 1427 0 03 28 5mmz 0 8mm ISO EMR 5 75 146 1mm TOLERANCES UNLESS STATED OTHERWISE 0 X 0 030 0 XX 0 010 0 XXX 0 005 0 XXXX 0 002 ANGLE 0 5 DEG MATERIAL FINISH DIMENSIONS DESIGNED IN INCHES THIRD ANGLE ROJECTION DATE gt NAT NAT SIZE B FILE 922 0101 DWG DWG TYPE MECH INSTALLATION DWG NO AMS43N922 0 wk AUDIO ALERT 1 2 TONE RATE RATE AUDIO ALERT 3 TONE TIME DIR AUD LEVEL 8 07 0 05 205 0mm 1 3mm a CENTER OF GRAVITY WEIGHT 2 1 lbs 1 0 kg PROPRIETARY AND CONFIDENTIAL TO NAT LTD APPROVED JAN 27 94 nn F nat NORTHERN AIRBORN CAGE CODE 5 1 AUDIO CONTROLLER PART NO 545 E TECHNOLOGY LTD REV SHEET 1 01 1 1 REVISIONS
8. Anat NORTHERN AIRBORNE TECHNOLOGY LTD sal AUDIO CONTROLLER CHECKED SIZE CODE PART NO REV SHEET 96 400 1 01 1 1 FILE 405 0101 DWG DWG TYPE CONNECTOR MAP DWG NO AA96N400M405 0 DESCRIP TION DATE FORMAT CHANGES ONLY MAR 2 95 ECR 4 1185 UPDATED RX ADDED TO KNOB MAY 29 98 1693 G HOLE WAS 0 375 DIA WITH COUNTERSINK DIA OF 0 60 APR 17 01 DOCCRO2060 ADDED SHEET 3 3 UPDATED CURRENT STANDARDS MAY 14 07 Q 96 TOWER ICS ICS TX LIVE CONFIDENTIAL AND PROPRIETARY TO NAT LTD srt NORTHERN AIRBORNE TECHNOLOGY LTD DATE AUDIO CONTROLLER CHECKED FRONT VIEW SIZE CODE PART NO REV SHEET CN A 1 96 400 1 11 1 3 FILE 905 0 DWG DWG TYPE FACEPLATE DWG NO AA96N400N905 0 REV DESCRIPTION DATE BY 1 01 EXTERNAL CONECTIONS TO RESERVED PINS REMOVED FROM SHEET 3 FEB 20 96 MWS 1 02 UPDATED TO CURRENT NAT STANDARDS MAY 31 00 TAT AA97 402 INSTALLATION NOT LL WIRES SHOULD BE 22 AWG UNLESS OTHERWISE NOTED SE TEFZEL M27500 OR 5 44 81044 IELDED WIRE WITH SOLDER SLEEVES HEADPHONE MICROPHONE AND ICS LINES USE TWISTED SHIELDED PAIR CONNECT SHIELDS TOGETHER AND GROUND TO CLEAN AIRCRAFT GR
9. Information in this section consists of product description design features and specifications for the AA9x Series Single Channel Audio Controller All derivative product information shall be contained in the applicable manual supplement which may be obtained from NAT as required Review all notes warnings and cautions 1 2 Product Description The AA9x series provide control for all aircraft audio allowing selection of transmit and receive audio LIVE KEYED or VOX intercom interface for an additional hand held transmit microphone hand mic and pilot isolation emergency operation Transmit and PA functions are controlled with a single rotary switch Receive audio ICS operations and tape audio are controlled with toggle switches Receive volume ICS volume and ICS VOX squelch are individually adjusted with rotary controls Sidetone S T level is adjustable internally and the AA97 also has an individual RX level control for each transceiver 1 3 Design Features The AA9x series Dzus rail mounted units with lighted faceplates Transceiver interfacing is accomplished through directly switched microphones To ensure maximum radio compatibility it has a ground referenced keyline that incorporates no diodes or other steering components Independent control is provided for each audio channel within the controller allowing sidetone ICS audio and RX audio to be independently set Boom mic support is provided for the
10. PAX 4 PAX 4 PAX 4 PH PAX 4 PH 20 DO DC DC DC 5C DC DC PA PA D lt D lt gt lt D 5 gt lt D lt OX gt lt gt ICS CALL PILOT ISO AUDIO BREAKER 20 AWG 28 VDC POWER GU AWC P 28VDC POWER POWER GROUND A C GROUND PROPRIETARY AND CONFIDENTIAL TO NAT LTD E TECHNOLOGY LTD DESIGNED DRAWN DATE AUDIO CONTROLLER CHECKED u SIZE CAGE CODE PART NO REV SHEET AA96 400 1 01 2 3 FILE 403 1101 DWG DWC TYPE INTERCONNECT DWG NO AA96 400 403 1 REVISIONS DESCRIP TION DATE 1185 FORMAT CHANGES JUNE 3 98 AA96 400 P102 57 PIN FEMALE DMIN MATING CONNECTOR 28 LIGHTS RX VHF 1 LO RX LO RX LO RX LO RX LO RX LO RX LO RX LO RX LO RX LO RX LO JUMPMASTER PH JUMP JUMPMASTER PH MASTER OBSERVER PH PHN OBSERVER OBSERVER PH LO HI ICS TIE LO EXPANSION M TO BE USED FOR EXPANSION OF INTERCOM SYSTEM ONLY REFER TO INSTALLATION MANUAL FOR DETAILS PROPRIETARY AND CONFIDENTIAL TO NAT LT
11. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20 21 22 23 24 25126 27 28 29 30 31 32 33 54 55 36 57 RECEIVE AUDIO INPUTS FROM RADIOS H S OUTPUT P101 P IN FEMALE DMIN NG CONNECTOR Z0O 40O0U 28V PWR IN A L E R T P 1 R 6 17 L lila alt s s z a 9101112 13 14 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 18 19 20 21 22 23 24 25 26 27 28V 294 3031 32 33 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PAT 34 55 56 57 58 59 40 41 42 43 44 45 74481449450 ON OFF 4 6 AUDIO COMMON EE 5 MINE 112 3 PWR MIC KEY OUTPUT MIC KEY REAR 5 REAR ICS GND TO RADIOS INPUTS MIC INPUT H S OUTPUTS RESERVED NOTE DO NOI GROUND HEADSET COMMONS ROM REAR OF AIRFRAME Confidential and Proprietary to NAT Anat NORTHERN AIRBORNE TECHNOLOGY LTD ESIGNED DRAWN TGM DATE MAR 30 95 NAT PROD AUDIO CONTROLLER CHECKED 5 SIZE CAGE CODE PART NO REV SHEE T 3AB01 95 729 1 02 1 4 LE 405 0102 DWG DWG CONNECTOR MAP DWG NO 95 729 405 0 REVISIONS DESCRIP TION DATE FORMAT CHANGES SHEET 2 ENGRAVE LAYER ADDED OCT 15 96 DOCCRO2024 UPDATED TEMPLATE APR 3 07 RXon musc an AA
12. AA96 001 405 0 1 00 Audio Controller Connector Map AA96 001 905 0 1411 A Audio Controller Faceplate Section 2 Rev 1 00 ENG FORM 805 0115 DOT Issue 4 Page 2 7 CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD nat 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual DOCUMENT REV DESCRIPTION TYPE AA96 400 AA96M00M03 0 1 01 Audio Controller Interconnect 96 400 403 1 1 01 Audio Controller Interconnect AA96 400 403 2 1 01 Audio Controller Interconnect 96 400 405 0 AA96 400 905 0 AA97 402 97 402 403 0 97 402 403 1 AA97 402 403 2 AA97 402 405 0 97 402 905 0 AA97 402 922 0 1 01 1 11 1 02 1 02 1 02 1 01 1 11 1 00 Audio Controller Audio Controller Audio Controller Audio Controller Audio Controller Audio Controller Audio Controller Audio Controller Connector Map Faceplate Interconnect Interconnect Interconnect Connector Map Faceplate Mechanical Installation Section 2 ends following the above documents Section 2 Rev 1 00 ENG FORM 805 0115 DOT Issue 4 Page 2 8 CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD 1 99 126 7mm 2 55 64 8mm REVISIONS REV DESCRIPTION DATE BY 1 01 787 DRAWING WAS 910 0100 DWG FORMAT CHANGES MAR 9 99 6 81 173 0mm NO H3MOd
13. DESCRIP TION DATE UPDATED TO CURRENT NAT STANDARDS JUL 7 00 AA95 728 INSTALLATION NOTES ALL WIRES SHOULD BE 22 AWG UNLESS OTHERWISE NOTED USE TEFZEL M27500 OR 5 44 M81044 SHIELDED WIRE WITH SOLDER SLEEVES 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 GROUND MICROPHONE OR HEADSET LO CONNECTIONS AIRFRAME ADJUSTABLE LEVEL DIRECT AUDIO INPUT AMPLIFIED AIRCRAFT ENTERTAINMENT SYSTEM MUSIC MUST BE GROUND REFERENCED IF NOT FLOATING GROUND ADAPTER BEIWEEN THE AUDIO CONTROLLER AND ENTERTAINMENT SYSIEM WILL BE REQUIRED TO BE USED FOR EXPANSION OF INTERCOM SYSTEM ONLY REFER TO INSTALLATION MANUAL FOR DETAILS DEFINITIONS ZG O CONNECTION THE PIN 15 NOT CONNECTED TO TERNALLY AND THEREFORE SHALL HAVE NO CONNECTION EXTERNALLY C SPARE O CONNECTION INTERNALLY BUT A SPARE WIRE SHALL BE STALLED IN THE WIRE HARNESS RESERVED AY BE CONNECTED AND USED THE FUTURE THE CIRCUITRY MAY BE PRESENT OR ADDED TO ACTIVATE THE FUNCTION THE PIN MAY BE USED FOR TEST PURPOSES IHERE 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 PROPRIETARY
14. LTD a C AA9x Series Single Channel Audio Controller SM56 Installation and Operation Manual D37SL IKC consists of Quantity Description NAT Part No 1 D min 50 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 7 Installation Drawings Note There are multiple versions of the AA95 96 and 97 For this reason the documents listed below are supplied for reference only for units with Serial numbers 6000 and above If specific model information is required please contact the Product Support Department at NAT DOCUMENT REV DESCRIPTION TYPE AA95 and AA96 All versions 543 922 0 1 01 Audio Controller Mechanical Installation AA95 728 AA95V28M03 0 1 01 Audio Controller Interconnect 95 728 403 1 1 01 Audio Controller Interconnect 95 728 403 2 1 01 Audio Controller Interconnect AA95V28M05 0 1 01 Audio Controller Connector Map AA95 728 905 0 1 02 Audio Controller Faceplate AA95 729 AA95V29M03 0 1 00 Audio Controller Interconnect 95 729 403 1 1 02 Audio Controller Interconnect AA95V29M03 2 1 01 Audio Controller Interconnect AA95V29M05 0 1 02 Audio Controller Connector Map AA95 729 905 0 1 02 Audio Controller Faceplate AA96 001 AA96 001 403 0 1 00 Audio Controller Interconnect 96 001 403 1 1 00 Audio Controller Interconnect AA96 001 403 2 1 00 Audio Controller Interconnect
15. Pilot co pilot boom mic support with pilot priority 4 PAX ICS only supported Front panel RX and ICS level controls Section 1 ends Section 1 Rev 1 00 Issue 4 Page 1 4 ENG FORM 800 0113 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a 9 Series Single Channel Audio Controller SM56 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 AA9x Series Single Channel Audio Controller Note The AA95 AA96 and 97 series single channel audio controllers are customized units and may have unique operational features that are different to the options described or are not covered in this manual Any questions should be directed to the NAT Product Support Department 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 Operators Manual Certificate of Conformity or Release Certification 2 2 1 Warranty All Northern Airborne Technology Ltd products are warranted f
16. TAC 4 RX HI 1 4 Rx LO 20 LO RESERVED 14 RESERVED 33 RESERVED 15 RESERVED 34 PILOT PHN HI 18 ia A PHN PILOT PILOT PHN LO 37 L PHN 1013 m T o JACK COPILOT PHN HI 17 E PHN COPILOT COPILOT PHN LO 36 wp ee LO JACK ICS TIE HI 16 29 ICS ICS 10 55 m m LO EXPANSION A Je eile PROPRIETARY AND CONFIDENTIAL TO NAT LTD DESIGNED DRAWN DATE CHECKED AUDIO CONTROLLER APPROVED SIZE CAGE CODE NO REV SHEET 3ABO1 AA97 402 1 02 5 3 FILE 403 0102 DWG DWG INTERCONNECT DWG NO AA97 402 403 2 REVISIONS REV DESCRIPTION DATE BY 1 01 UPDATED TO CURRENT NAT STANDARDS MAY 26 00 TIVIVITITITININIALILAIDIAIDIRIRI I CIP A HIHIAJAJAJATAID UI MI UI I E E C O X EIXIRISISISIPIL LIO 4 11 2 112 3 112 1 2 CIRIRITIT T 0 102 THE 37 PIN FEMALE DMIN P N ee een MATING CONNECTOR 21514151617 10 11112 15 114115 16117 18 19 RX HI o O OO OO OUO UO OOOvooooooo HI RX LO LO 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 1 37 RECEIVE AUDIO INPUTS FROM RA
17. conducting tests and slowly increase the headset volume to a comfortable listening level 2 4 2 Cautions CAUTION 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 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 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 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 and ground lines which shall be a minimum of 20 AWG Reference t
18. gt lt N C N C N C m AUDIO BREAKER 20 AWG 1A 28 VDC POWER POWER GROUND 28 VDC POWER gt GROUND PROPRIETARY AND CONFIDENTIAL TO NAT LTD DESIGNED DRAWN Anat NORTHERN AIRBORNE TECHNOLOGY LTD DATE APR 21 98 TITLE AUDIO CONTROLLER Q5 n 7 NAT SIZE CAGE CODE PART NO REV SHEET 4 1 96 001 1 00 2 3 FILE 405 1100 DWG DWG TYPE INTERCONNECT DWG NO AA96 001 403 1 AUDIO CONTROLLER J102 P102 57 PIN FEMALE DMIN MATING CONNECTOR 28 VDC LIGHTS 19 28 VDC LIGHTS TX 1 RX H RX 1 RX LO LO TX 1 TX 2 RX H RX RX LO LO TX 2 RX H RX RX LO LO TX 3 RX LO TX 4 BA LO NAV 1 RX NAV 1 LO NAV 1 NAV 2 RX NAV 2 LO ADF 1 RX ADF 1 LO ADF 2 RX ADF 2 LO AUX 1 RX AUX 1 LO AUX 2 RX RX AUX 2 RX LO LO N C N C N C RVED RVED RVED RVED 2 PILOT PH PILOT PH PILOT JACK F COPILOT PH COPILOT PH PHN COPILOT LO JACK NAT ICS ICS TIE HI CS TIE LO Dex Ics ICS Cc Gel E Ss PROPRIETARY AND CONFIDENTIAL TO NAT LTD DESIGNED DRAWN DATE AUDIO CONTROLLER DN A XN SIZE CAGE CODE PAR
19. pilot and co pilot with both ICS and XMIT functions via cyclic or yoke switching In some models a third transmit capable boom mic is added Live Hot Mic and VOX ICS are also provided with a transparent function allowing immediate transmission via this mode without further control panel switching and immediate return to ICS operation on completion The ICS intercom function is achieved using dynamic noise reduction and active filtering This provides the clearest possible ICS audio under high ambient noise conditions by rejecting airframe and wind noise and passing only voiceband information All audio except the S T of the radio in use and certain DIRECT AUDIO input signals is muted during transmit for clarity ICS operation allows transmit during any ICS mode by using the transmit PTT switch All switches relay contacts and external connections are gold plated for maximum reliability Switches and relays are sealed G10 FR flame retardant circuit boards are postcoated for maximum moisture resistance and corrosion prevention Relays are sealed high vibration rated 500 shock dry nitrogen filled units Section 1 Rev 1 00 Issue 4 Page 1 1 ENG FORM 800 0113 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual Output Signals Quantity Headphone Direct Audio 1 Direct Audio 2 Alert Circ
20. switches white switch bats are two position switches When set to the up position the respective transceiver receive audio is selected on When set to the down position the respective transceiver receive audio is selected off The NAV receive audio select switches blue switch bats are typically three position switches When set to the up or down position the respective NAV receive audio is selected on When set to the center off position the respective NAV receive audio is selected off The master receive volume control RX VOL adjusts all receive audio concurrently from 1 to full It is important to set the individual radio volume controls to a nominal level and then use the master receive volume on the audio controller to adjust for changing flight conditions When the red mode switch is set to NORMAL AA95 and AA97 s only the passengers will hear the radio audio as selected on the controller The passengers will not hear any radio audio when the red mode switch is in the ISO EMR position Section 3 Rev 1 00 Issue 4 Page 3 2 ENG FORM 806 0111 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a C AA9x Series Single Channel Audio Controller SM56 Installation and Operation Manual 3 3 2 Transmit Selector Switch TX 1 T TX 4 T 7 5 gt 2 SS TT E OL 25 f wW p H we ty aon a Te X opu 087 Pi TX Indicator Trans
21. varied to suit conditions The ICS VOL control provides adjustment from approximately 1 to full output In the AA95 and AA97 models the mode switch red switch bat is used to select between NORMAL and PILOT ISO EMR modes In the NORMAL position down all operations of the ICS are functional as described above When the switch is in the pilot isolate emergency position PILOT ISO EMR the pilot is isolated from the rest of the passengers If the controller is operated in the ISO EMR mode ICS operation will continue if there is no fault condition between the passengers and copilot but will exclude the pilot See Section 3 5 for further details 3 4 Optional Features Some of the more common optional features can be seen on the AA95 728 shown in Figure 4 section 3 3 3 and Figure 5 below A E BN WS F AUX ADF LR OFF L 25 bes IC I i EMR T Ab y L AL LIVE KEY Figure 5 AA95 729 Section 3 Rev 1 00 Issue 4 Page 3 4 ENG FORM 806 0111 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a m 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual 3 4 1 ICS ISO and or PLT ISO Annunciators ICS ISO and or PLT ISO annunciators indicate that the intercom connection to the other audio controllers typically the pilot s has been switched off 3 4 2 ICS CALL Annunciator ICS CALL annunciator indic
22. 000 may not be covered by the information in this manual Please refer to 5 01 or contact the Product Support Department at NAT Ltd Page ii Installation and Operation Manual ENG FORM 820 0115 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual Prepared g AT Checked By Approved By 226 255 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 N A Initial Issue Oct 23 2002 N A Split Manual Nov 10 2003 Section 1 Rev 1 00 Update to current templates Sept 05 2008 Section 2 Rev 1 00 Section 3 Rev 1 00 Installation and Operation Manual Page iii ENG FORM 820 0115 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD Section Ai di LIE LE LX O N ORR gt gt 2 1 2 2 1 2 3 2 4 2 4 1 2 4 2 2 4 3 2 4 4 2 4 5 2 5 1 2 5 2 2 7 a C AA9x Series Single Channel Audio Controller SM56 Installation and Operatio
23. 95 COM FM24 AUX ADF DPLR OFF 729 d PLT ISO se ICS nac ISO EMR TX CALL ICS VOL B Q NORMAL LIVE CONFIDENTIAL AND PROPRIETARY TO NAT LTD DESIGNED DRAWN AUDIO CONTROLLER FRONT VIEW SIZE CAGE CODE PART NO REV SHEET S A 3ABO1 AA95 729 1 02 1 3 FILE 905 0 DWG DWG TYPE FACEPLATE DWG NO AA95N729N905 0 905 s AA95 xxx 905 0120 DWT AA96 001 INSTALLATION NOTES LL WIRES SHOULD BE 22 AWG UNLESS OTHERWISE NOTED SE TEFZEL M27500 OR SPEC44 M81044 HIELDED WIRE WITH SOLDER SLEEVES EADPHONE MICROPHONE AND ICS TIE LINES USE TWISTED HIELDED 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 HEADPHONE LO CONNECTIONS TO AIRFRAME DEFINITIONS C CONNECTION THE PIN 15 NOT CONNECTED TO ANYTHING TERNALLY AND THEREFORE SHALL HAVE NO CONNECTION EXTERNALLY C SPARE O CONNECTION INTERNALLY BUT A SPARE WIRE SHALL BE STALLED IN THE WIRE HARNESS RESERVED AY BE CONNECTED AND USED THE FUTURE THE CIRCUITRY MAY BE PRESENT OR ADDED TO ACTIVATE THE FUNCTION IHE PIN MAY BE USED FOR TEST PURPOSES HERE 15 NO EXTERNAL CONNECTION RESERVED SPARE RESERVED BUT INSTRUCTIONS SHALL BE FOLLOWED TO ACTIVATE RSV SP CIRCUITRY A SPARE WIRE SHALL BE INSTALLED IN THE WIRE HARN
24. AND CONFIDENTIAL TO NAT LTD ESIGNED DRAWN DATE AUDIO CHECKED NM CONTROLLER 3 SIZE CAGE CODE PART NO REV SHEET 95 728 1 01 1 3 FILE 403 0101 DWG DWG TYPE INTERCONNECT DWG NO AA95 728 403 0 P101 50 PIN FEMALE DMIN MATING CONNECTOR COM CO co co co AU AUX AUX REAR HA REAR HAND REAR HAND PILOT PILOT EY REAR C HAND LO MIC C PILOT LO JACK COPILOT COPILOT C COPILOT LO JACK 1 aie sad id PILO PILOT PILOT PILOT COPILO COPILO COPILOT COPILOT PAX 1 PAX 1 PAX 1 P PAX 1 P PAX 2 PAX 2 PAX PH PAX 2 P PAX 5 PAX 3 PAX 3 PH PAX 3 PH PAX 4 PAX 4 PAX 4 P PAX 4 P PA PA PA SYSTEM C OC Ce e OE DC Sa Mee eT re re ish ICS CALL ALERT 2 ALERT 3 EXISTING ALERT BREAKER ALERT POWER 28 VDC POWER AUDIO BREAKER 28 VDC POWER WX 28 VDC POWER POWER GROUND A C GROUND PROPRIETARY AND CONFIDENTIAL TO NAT LTD ESIGNED KV Rm BERN Nat NORTHERN AIRBORNE TECH
25. CS operation will allow transmit during any ICS mode by using the PTT switch 3 3 Controls and Indicators In all AA9x controllers transmit and PA functions are controlled with a single rotary selector switch or in some configurations with the TX PA Select switch The main receive volume ICS volume and 5 VOX squelch are individually adjusted with rotary controls The ICS operations and receive audios are selected using color coded toggle switches In the AA95 and AA97 controllers individual receive audio is selected with color coded toggle switches In the AA96 and AA97 controllers individual receive volumes are adjusted using rotary controls Section 3 Rev 1 00 Issue 4 Page 3 1 ENG FORM 806 0111 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a m 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual 3 3 1 Receive Audio Select Switches Radio Specific Volume Controls AA97 only 7 2719 ff N Receive pP Audio Switches Transceiver AA9 avi ADF Receive gt uos ZL ZL ZE HF HF TAC TAC TAC TAC NAV2 ME X VOL SUUS T Ay 121 cp Receive ps Volume EMR TX VOX VOL Control CH NORMAL T Y LIVE KEY Mode Switch TX PA Select Switch Figure 2 Receive Audio Select Switches The transceiver receive audio select
26. D DESIGNED KV oe Y eM Anat NORTHERN AIRBORNE TECHNOLOGY LTD DATE AUDIO CONTROLLER CHECKED SIZE CODE PART NO REV SHEET DRESD 96 400 1 01 3 3 FILE 403 2101 DWG DWC DWG NO AA96N400N403 2 REVISIONS DESCRIPTIO DATE 1185 FORMAT CHANGES JUNE 2 98 CE N N AE G8 PTOZ 57 PIN FEMALE DMIN MATING CONNECTOR AM lt AMMNWO U 28 VDC LIGHTS AMMAN LS U pale 9 bI 1 5 7 12 15 i ns vo 17 18 19 RX HY 0 RX LOL OO OO OO OO QW 7 20 21 22 25 24 25 26 27128 29 30 31 32 35 34 55 36 57 RECEIVE AUDIO INPUTS FROM RADIOS P101 N FEMALE DMIN G CONNECTOR GZT Ss AUA lt D a C AM lt AMMWO ACHAP VAC xa AM lt DMMNWO Na VDC POWER C MIC HI 184194 2042142242524 4 254264274284 29A 350A 31 MIC LO j POWER MIC KEY OUTPUT GROUND TO RADIOS AM lt AMMWO AM u OPzuxcc NOTE DO NOT GROUND HEADSET COMMONS ROM REAR OF AIRFRAME CONNECTOR PROPRIETARY AND CONFIDENTIAL TO NAT LTD DESIGNE KV oe SEEN
27. DIOS PHN OUTPUT VIVITITITI TIPICIPICIA A JA PI PIA HIH 110 I IO L L LIA A L I CICICILIPILIPIEI ELIE E 01 I O IIRIRIRIM M R ilwu vtr PTT Lb Ce TIT LET 14243 P P101 X C H Lio TIS 50 PIN FEMALE DMIN X C E MATING CONNECTOR 5 R o VDC POWER 1 2 3144 KEY 0 0 0 0 18 19 20 21 MIC HI 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PHN HI 341 55436457 L MIC LO 0 0 0 0 0 0 PHN LO 11 2 31411121514 MIC KEY OUTPUT 0 L P W TO RADIOS O PAX PAX E TL R 2 G R U D NOTE DO NOT GROUND HEADSET COMMONS VIEW IS FROM REAR OF AIRFRAME CONNECTOR PROPRIETARY AND CONFIDENTIAL TO NAT LTD IN 22 CHECKED AUDIO CONTROLLER APPROVED FILE 405 0101 DWG DWG TYPE REV SHEET 1 01 1 1 DWG NO 97 402 405 0 CONNECTOR MAP SIZE CAGE CODE PART NO SABO1 AA97 402 REVISIONS DESCRIP TION DATE FOR PREVIOUS REVISIONS SEE REV 1 10 DOCCRO1695 UPDATED WITH LATEST TEMPLATE JUN 26 06 9 10 0 10 10 5 60690003909 VHF TA TAG TAG TA NAV2 DME RX VOL 5 e 6 6 6 NORMAL LIVE KEY ENG FORM 905 s AA97 xxx 905 CONFIDENTIAL AND PROPRIETARY TO NAT LTD NORTHERN AIRBORNE TECHNOLOGY LTD DATE STE AUDIO CONTROLLER FRONT VIEW SIZE CAGE CODE PART NO REV SHEET APRROVED
28. ESS PROPRIETARY AND CONFIDENTIAL TO NAT LTD ML sk Nat NORTHERN AIRBORNE TECHNOLOGY LTD DATE APR 21 98 TITLE AUDIO CONTROLLER 105 _ CAGE CODE PART NO SHEET SEER rs AOE 3AB01 96 001 1 00 1 3 FILE 403 0100 DWG DWG TYPE INTERCONNECT DWG NO AA96 001 403 0 P101 AUDIO CONTROLLER J101 50 PIN FEMALE DMIN MATING CONNECTOR 1 KEY TX AMIC Hi 18 l TX 1MIC LO 35 TX 2 KEY 2 TX 2 MIC HI 19 TX 2 MIC LO 36 TX 3 KEY 3 TX 3 MIC HI 20 TX 3 MIC LO 37 TX 4 KEY 4 TX 4 MIC HI 21 TX 4 MIC LO 38 TX 5 KEY 5 TX 5 MIC HI 22 TX 5 MIC LO 39 REAR HAND KEY 6 HAND REAR HAND MIC 23 MIC REAR HAND MIC LO 40 n zz gt k PILOT MIC HI 24 PILOT MIC LO 41 PILOT JACK gt lt COPILOT MIC HI 25 COPILOT MIC LO 42 C COPILOT JACK PILOT TX KEY N C COPILOT TX KEY N C PAX 1 MIC H PAX 1 MIC LO PAX 1 PHN H PAX 1 PHN LO PAX 2 MIC PAX 2 MIC PAX 2 PHN PAX 2 PHN 3 MIC PAX 3 MIC PAX 3 PHN PAX 3 PH PAX 4 MIC PAX 4 MIC PAX 4 PH PAX 4 PH PA SYSTEM DC DG DO OG DC OG lt D lt
29. MAY BE USED FOR TEST PURPOSES HERE IS 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 REVISION DATE NORTHERN AIRBORNE TECHNOLOGY LTD 1 00 FEB 3 95 DESIGNED BY DESCRIPTION K VEITCH AUDIO CONTROLLER DRAWN BY PART NUMBER DRAWING TYPE SHEET T MASTERS 95 729 INTERCONNECT 1 3 APPROVED BY DRAWING NUMBER FILE NUMBER oro AA95N729N403 0 AA95N729N403 0100 REVISIONS DESCRIP TION DATE ECR 4600 FORMAT CHANGES DRAWING CORRECTIONS OCT 17 96 779 PINS 26 45 WERE LABELED ATND 1 MAY 7 97 AUDIO CON P101 50 PIN FEMALE DMIN EXTERNAL MATING CONNECTOR CONNECTIONS EY COM 1 C EY COM 2 K 2 2 AUX K AUX AUX RES RES DOCTOR C DOCTOR DOCTOR LO JACK FEE PFE EP PrP ERE 2 DC NURSE NURSE M C NURSE LO JACK C DOCTOR T x SW DOCTOR TX KEYLI DOCTOR ICS SW DOCTOR ICS KEYLI NURSE TX SW NURSE TX KEYLI NURSE ICS SW NURSE ICS KEYL ATND 1 K ATND 1 MIC ATND 1 MIC k ATND 1 H S ATND 1 H S L
30. ND PROPRIETARY AND CONFIDENTIAL TO NAT LTD RAWN DATE PPROVED HECKED AUDIO CONTROLLER CAGE CODE PART NO 402 1 02 2 5 FILE 403 0102 DWG DWG TYPE INTERCONNECT DWG NO 97 402 403 1 P102 97 402 J102 37 PIN FEMALE DMIN 5 28 VDC LIGHTS 19 28 VDC LIGHTS VHF 1 RX HI 2 RX VHF 1 VHF 10 21 pc E VHF 2 RX HI 3 RX VHF 2 VHF 2 Rx LO 22 VL o HI 4 RX TAC 1 TAC 1 10 23 S 2 RX HI 5 RX TAC 2 TAC 2 Rx LO 24 EL h AC 3 RX HI 6 RX TAC 3 TAC 3 RX LO 25 gt MERE AV 1 RX Hil 7 RX NAV 1 AV 1 RX 10 26 FN AV 2 RX HI 8 RX NAV 2 NAV 2 Rx LO 27 no ADF RX HI 9 RX ADF ADF RX 10 28 AUX 1 RX HI 10 RX AUX 1 AUX 1 RX 10 29 LY Z o DME RX HI 11 RX DME DME Rx 10 gt eat du AUX 2 RX HI 12 RX AUX 2 AUX 2 Rx LO H V JLo a DIRECT AUDIO HI 13 HI ALERT DIRECT AUDIO 10 32 gt M MODULE
31. NOLOGY LTD DATE AUDIO CHECKED CONTROLLER 5 SIZE CAGE CODE PART NO REV SHEET 3AB01 A95 728 1 01 2 3 FILE 403 0101 DWG DWG TYPE INTERCONNECT DWG NO AA95 728 403 1 P102 95 728 4102 37 PIN FEMALE DMIN MATING CONNECTOR 28VDC LIGHT 28VDC LIGHTS COM 1 RX COM 1 RX RX COM 1 LO COM 2 RX COM 2 RX RX LO FM 1 RX FM 1 RX FM 2 RX FM 2 RX AUX RX AUX RX NAV 1 RX NAV 1 RX NAV 2 RX NAV 2 RX ADF RX ADF RX L cb lp kb kb kb kb kb k 11222277 RESERVED RESERVED DME RX HI DME RX LO MKR RX HI MKR RX LO DIRECT AUDIO HI DIRECT AUDIO LO ALERT MODULE Kb kb kb 2 MUSIC LEFT RX MUSIC LEFT RX MUSIC RIGHT RX MUSIC RIGHT RX RX LO MUSIC RX PLAYER LO 2 2 PEP PHN PILOT LO JACK gt lt 20 PHN COPILOT LO JACK gt lt 2 5 TIE HI 5 TIE ICS TIE L LO EXPANSION lt gt C PROPRIETARY AND CONFIDENTIAL TO NAT LTD E NORTHERN AIRBORNE TECHNOLOGY LTD DATE FEB 3 95 TITLE AUDIO CHECKED NM CONTROLLER SIZE CAGE CODE PART NO REV SHEET 3AB01 A95 728 1 01 3 3 LE 403 0101 DWG DWG INTERCONNECT DWG N
32. NTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual 3 3 3 1 LIVE Hot Mic Operation ICS mode switch orange switch bat set to the up VOX position and the VOX squelch control set to the full counter clockwise position 3 3 3 2 KEYED ICS PTT Operation ICS toggle switch orange switch bat set to the down KEY position In some models of AA9x audio controllers set the VOX squelch control to the full clockwise position Keyed ICS is inherent to the pilot and copilot microphone circuits only Passenger microphone circuits will be LIVE with this mode selected 3 3 3 3 VOX Voice Activated ICS toggle switch orange switch bat set to the up VOX position Set the 5 VOX Squelch control fully counter clockwise and then slowly rotate 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 3 3 3 4 General ICS Functions Passenger ICS audio is LIVE when the controller is in the LIVE or KEYED mode of ICS operation In the KEYED mode of operation the passenger microphones are LIVE Utilize drop cord assemblies incorporating microphone circuit interrupt switches for keyed ICS operation Passenger ICS is VOX triggered when VOX mode is selected All ICS audio is controlled by the front panel ICS volume control and may be
33. O PAX PAX 1 PAX 1 PAX 1 PAX 2 PAX 42 MIC L PAX 42 H S PAX 42 H S LO PAX 3 PAX 5 MIC LO PAX 3 JACK LO PAX 3 H S H PAX 3 H S LO P A MIC H P A MIC LO 20 22 5 5 up qu C i D K D lt D lt DC gt lt DX D lt gt ICS CALL gt PLT ISO gt ALERT 5 gt EXISTING ALERT BREAKER A ALERT PWR 28VDC AUDIO BREAKER A 1A A C GROUND 28V PWR POWER GROUND 28VDC ESIGNED DRAWN DATE AUDIO CONTROLLER CHECKED SIZE CODE PART NO REV SHEET AM 95 729 1 02 2 3 LE 405 1102 DWG DWG INTERCONNECT DWG NO AA95 729 403 1 REVISIONS DESCRIP TION DATE ECR 4600 FORMAT CHANGES DRAWING CORRECTIONS OCT 17 96 AUDIO CONTROLLER EXTERNAL J102 DC 37S P102 MATING CONNECTOR CONNECTIONS 28 VDC LIGHT em 28 VDC LIGHTS COM 1 AU COM 1 AUD AUD COM 1 LO COM 2 AU COM 2 AUD AU LO 1 AU 1 AUD AU LO 2 AU 2 AUD AU LO AUX AUDIO AUX AUDIO AU LO d k b k k 2124 70 RESERVED RESERVED RESERVED RESERVED ADF AUDIO HI ADF AUDIO LO
34. O AA95 728 403 2 REVISIONS DESCRIP TION DATE UPDATED TO CURRENT NAT STANDARDS JUN 21 00 P102 57 PIN FEMAI MATING CONN Qr 2mc3b rog AMM Oo ocx ALTO DAD O0o ocx NADO TF lt ON 2 3 4 5 6 7 8 9 10 1 12 15 14 t5 16 17 18 19 OO OO OUO OO OO 20 21 22 125 24 25 26 27 28 29 30 314 52 33 34 35 36 37 RECEIVE AUDIO INPUTS FROM RADIOS PHN OUTPUT LO Anam x Z gt gt T lt A 4QoOr UOO Zmzxou lt AN POWER MIC KEY OUTPUT GROUND TO RADIOS NOTE D HEADSET COMMONS EW IS FROM REAR OF AIRFRAME CONNECTOR PROPRIETARY AND CONFIDENTIAL TO NAT LTD DESIGNED DRAWN DATE AUDIO CHECKED QA CONTROLLER 5 SIZE CAGE CODE PART NO REV SHEET APEROVED 3 3AB01 95 728 1 01 1 1 FILE 405 0101 DWG DWG TYPE CONNECTOR MAP DWG NO 95 728 405 0 DESCRIPTION DATE ADDED SHEET 2 FORMAT CHANGES JUL 15 96 DOCCRO1074 UPDATED TO CURRENT STANDARDS FEB 7 05 RXON T NAV1 DME ADF AA95 COM COM FM1 FM2 AUX NAV2 MKR MUSIC 2 1 2 ISO EMR TX 99
35. ON RESERVED SPARE RESERVED BUT INSTRUCTIONS SHALL BE FOLLOWED TO ACTIVATE RSV SP CIRCUITRY SPARE WIRE SHALL BE INSTALLED IN IHE WIRE HARNESS PROPRIETARY AND CONFIDENTIAL TO NAT LTD DESIGNED KV oe Anat NORTHERN AIRBORNE TECHNOLOGY LTD DATE AUDIO CONTROLLER CHECKED SIZE ICAGE CODE PART NO REV SHEET RROVEB e 1 96 400 1 01 1 3 LE 403 0101 DWG DWG TYPE INTERCONNECT DWG NO AA96N400N403 0 REVISIONS DESCRIP TION DATE 1185 FORMAT CHANGES JUNE 2 98 96 400 P101 50 PIN FEMALE DMIN MATING CONNECTOR lt gt lt D lt 4 65 lt I lt m lt o REAR HA REAR HA REAR HA Ax m 4 1 D p D E nado JUMPMASTER JUMPMASTER OBSERVER HI OBSERVER LO eee nn RE dA cer ee JUMPMASTER TX SW JUMPMASTER TX KEY JUMPMASTER ICS SW JUMPMASTER ICS KEY OBSERVER TX SW OBSERVER TX KEY OBSERVER ICS SW OBSERVER ICS KEY D PAX 1 C PAX 1 MIC PAX 1 PH PAX 1 PH PAX 2 PAX 2 MIC PAX 2 PH PAX 2 PH PAX 5 PAX 5 PAX 3 PH PAX 3 PH
36. OUND GROUND POINT SHOULD BE THE SAME AS AIRCRAFT AUDIO SYSTEM POWER GROUND DO NOT GROUND MICROPHONE OR HEADPHONE LO CONNECTIONS TO AIRFRAME ADJUST ABLE LEVEL DIRECT AUDIO INPUT AMPLIFIED TO BE USED FOR EXPANSI REFER TO INSTALLATION ON OF INTERCOM SYSTEM ONLY ANUAL 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 ACTIVATE THE FUNCTION THE PIN MAY BE 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 IHE WIRE HARNESS PROPRIETARY AND CONFIDENTIAL TO NAT LTD DESIGNED DRAWN DATE AUDIO CONTROLLER SIZE CAGE CODE PART NO REV SHEET A SABO1 AA97 402 1 02 1 3 FILE 403 0102 DWG DWG TYPE INTERCONNECT DWG AA97 402 403 0 CHECKED APPROVED AA97 402 PILOT M PILOT M COPILOT MIC H COPILOT MIC LO PILOT TX KEY PILOT ICS KEY COPILOT T
37. T NO REV SHEET 1 AA96 001 1 00 3 3 LE 403 2100 bwG bwc TYPE INTERCONNECT DWG NO AA96N001N403 2 37 PIN FEMALE DMIN MATING CONNECTOR 28 VDC LIGHTS Q Qrnm 20rm5mct rn zu lt r2 Za cOT 9 0x Ze AAO 1121314151617 819 10 11112113 114115116 17 18 19 RX Hi O O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 HI RX LOY O O O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 LO 20 21 22 23 24 25 26 27 28 29 30 31 32 155 34 35 36 37 RECEIVE AUDIO INPUTS FROM RADIOS 101 N FEMALE DMIN G CONNECTOR OZPIN DEMI lt A AOr TVTOO VDC POWER PWR OUTPUT MIC KEY GND TO RADIOS INPUTS NOTE DO NOT GROUND HEADSET COMMONS ROM REAR OF AIRFRAME CONNECTO PROPRIETARY AND CONFIDENTIAL TO NAT LTD DESIGNED DRAWN Anat NORTHERN AIRBORNE TECHNOLOGY LTD DATE APR 27 98 TITLE NAT PROD CHECKED 105 C E SIZE CAGE CODE PART NO REV SHEET 3ABO1 96 001 1 00 1 4 FILE 405 0100 DWG DWG TYPE CONNECTOR MAP DWG NO AA96 001 405 0 AUDIO CONTROLLER DESCRIPTION DATE FORMAT CHANGES ONLY APR 14 98 1693 G HOLE WAS 0 375 DIA WITH COUNTERSINK DIA OF 0 60 APR 17 01 DOCCRO1847 UPDATED TO CURRENT STANDARDS NOV 14 06
38. X KEY COPILOT ICS KEY PAX 1 MIC H PAX 1 MIC LO PAX 1 PHN H PAX 1 PHN LO PAX 2 MIC H PAX 2 MIC LO PAX 2 PHN H PAX 2 PHN LO PAX 3 MIC PAX 5 MIC LO PAX 3 PHN H PAX 3 PHN LO PAX 4 PAX 4 M 4 PHN H PAX 4 PHN LO PA MIC H PA MIC LO ALERT ALERT 2 ALERT 3 ALERT POWER 28 POWER POWER GROUND 26 43 30 27 44 48 28 45 32 49 29 46 33 50 P101 50 PIN FEMALE DMIN MATING CONNECTOR 2 2 EY T VHF 1 LO EY yk IC VHF 2 EY k MIC TAC 1 T IC TAC 2 T 3 bk MIC TAC 4 gt lt PILOT A LO JACK MIC COPILOT ape Q Dc ME is LO JACK 20 AWG 28 VDC POWER PILOT sw Om ics sw o COPILOT TX sw ics sw N X C Y LO PAX 1 A CN MIC T n LO PAX 2 JACK CA PHN x aN C CJ LO PAX 3 n JACK I e MIC eo PAX 4 s rox JACK I lt A H PA LO SYSTEM YA i EXISTING ALERT BREAKER 77 FOr ae PONR AUDIO BREAKER lL A 20 AWG 1 ESIGNED GROU
39. and a momentary push button switch for the Transmit functions Both switches provide a mic interrupt function The 3 position ICS switch will allow the user to change the switch settings to match the operational intercom mode that has been selected at the AA9x series e g LIVE KEYED or VOX The cable should have 6 conductors with the and PHONE pairs shielded MIC wires must be shielded as a minimum To ensure proper shielding the shield s should be terminated to the MIC LO connection at the airframe connector of the PTT cordset See Figure 1 below for details ICS Slide Switch ICS KEY 4 OFF ICS LIVE VOX Momentary Locking XMIT Push button Switch ICS KEY XMIT KEY MIC HI MIC LO PHONE LO Black Figure 1 PTT Cord for Use with NAT Audio Controllers XMIT and ICS To avoid complications in the aircraft it is recommended that the same type of PTT cordsets be used for all headset locations in the aircraft It is not good practice to create a situation where a specific cordset is needed for the copilot which might cause operational errors if moved to a passenger location Although in line PTT cordsets can be used to conveniently address a number of requirements for microphone and PTT control they can also be a source of trouble if incorrectly configured or improperly shielded Many in line PTT cordsets use the PHONE LO connection as the ground reference for the ICS and TX PTT keylines The PHONE LO co
40. are shown in Figure 2 and Figure 3 2 5 1 Left Side Panel Adjustments The trimpots on the left side panel shown in Figure 2 are used to adjust the levels of audio in the user s headphones Rotating the trimpots clockwise cw increases the level and counter clockwise ccw reduces it I ALERT LEVEL S T LEVEL VOX LEVEL POWER ON Figure 2 Left Side Panel Adjustments 2 5 1 1 ALERT LEVEL The ALERT LEVEL trimpot is used to adjust the level for the internally generated Alert signals Other parameters relating to these signals are adjusted from the right side panel 2 5 1 2 S T LEVEL The S T LEVEL trimpot adjusts the overall sidetone level of all selected transceivers from the front panel 2 5 1 3 VOX LEVEL The VOX LEVEL trimpot sets the sensitivity level for the front panel VOX control the level of audio required to activate microphones 2 5 1 4 POWER ON The POWER ON LED will illuminate to indicate that the unit is connected to the power supply Section 2 Rev 1 00 Issue 4 Page 2 5 ENG FORM 805 0115 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a m 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual 2 5 2 Right Side Panel Adjustments A variety of different signals can be selected to trigger the internal Alert signals The trimpots on the right side panel shown in Figure 3 are used to adjust the characteristics of the a
41. ates that an ICS CALL switch is active and that the intercom connection between the audio controllers needs to be restored 3 4 3 ICS CALL Switch ICS CALL switch used to signal other audio controllers typically the pilot s that an isolated station needs to communicate with the pilot s The output from the switch is normally used to activate a CALL annunciator and or a CALL tone 3 4 4 PAT ON OFF Switch PAT ON OFF Patient Headphone Audio Select switch allows the crew to select the patient audio ON or OFF 3 4 5 ICS TIE SPLIT Switch ICS TIE SPLIT switch allows for local selection of the intercom connection to other audio controllers in the aircraft intercom system In the TIE position intercom audio is shared with all other audio controllers In the SPLIT position intercom audio to from all other audio controllers is deselected 3 5 Emergency Operation AA95 and AA97 models only When the red PILOT ISO EMR NORMAL mode switch is set to the ISO EMR position the pilot is removed from the ICS bus and connected directly to the selected radios This mode should be selected in the event of a box fault or power failure In the ISO EMR mode all functions are retained by the pilot 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 th
42. e 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 In the ISO EMR mode all switches work exactly as they do during NORMAL operation except for the RX and ICS volume controls which have no effect The ISO EMR function should be tested prior to flight to ensure proper operation and allow the radio levels to be set adequately for emergency operation Any selected receive audio is switched to the primary user pilot in the emergency mode but not to any passengers in the system Audio level will be lower than in NORMAL operation because the signals are obtained directly from the radios bypassing the electronics in the controller This is provided for failure situations that make operation impossible in the NORMAL mode i e loss of power or amplifier failure etc Section 3 Rev 1 00 Issue 4 Page 3 5 ENG FORM 806 0111 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual 3 6 Audio Alerting Functions AA95 and AA97 models only Two types of audio alerting are supported Direct Audio and Internal Alerting The use of these alerting features should be determined defined and recorded so that the operator has an opportunity to use these features as they wer
43. e intended for their specific installation 3 6 1 Direct Audio Direct Audio is when an audio signal from an existing warning system is connected directly into the audio system and is not front panel selectable There are usually two Direct Audio inputs on the AA95 and AA97 Typically Direct Audio 1 is an amplified adjustable input and Direct Audio 2 input connects directly to the pilot s headset output 3 6 2 Internal Alerting Internal Alerting is provided by up to three separate internal tone generators that are coupled to the headset output These tones are a function of the AA95 or AA97 itself and can be used to supplement existing warning tones Low Rotor Engine Out warnings in a Bell 206 or provide unique alerting capability for functions such as ICS Call Rad Alt DH warning etc The internal alerts are configuration specific and how they will be used is determined at the time of installation The Internal alerts are not front panel selectable Section 3 ends Section 3 Rev 1 00 Issue 4 Page 3 6 ENG FORM 806 0111 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD
44. he Interconnect drawing for additional specifications Check 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 2 4 4 In line PTT Cordsets In line push to talk PTT cordsets also known as drop cords can be used to create provide PTT capability for the user headsets that do not have yoke or cyclic mounted PTT switches For headsets connected to the PILOT or COPILOT inputs outputs of the AA9x series ICS and TX keylines are needed to properly activate the associated PTT circuitry inside the AA9x series For headsets connected to the PASSENGER inputs outputs of the AA9x series a method of controlling the microphone on the headset is needed because of the hot mic circuitry This is best accomplished with a mic interrupt switch in the PTT cordset Section 2 Rev 1 00 Issue 4 Page 2 2 ENG FORM 805 0115 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual There are numerous manufacturers of in line PTT cordsets offering many electrical variations to accomplish different functions To meet the operational requirements for headset stations supported by the AA9x series NAT recommend the dual switch type a 3 position momentary center off locking slider switch for the ICS functions
45. l alerting ICS CALL annunciator Illuminated TX selector knob 1 Direct Audio input Section 1 Rev 1 00 ENG FORM 800 0113 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD Issue 4 Page 1 3 AA95 729 AA96 001 AA96 400 AA97 402 a 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual Full support for Doctor Nurse and Attendant ICS only for 2 positions plus patient 2 Comm 2 FM and AUX XCVR positions ADF Doppler and music inputs 1 Direct input ICS CALL switch PLT ISO annunciator 5 Nav Aids plus music input KEYED LIVE VOX ICS with front panel control Illuminated TX selector knob TX 1 TX 2 TX 3 TX 4 TX 5 and XCVRs 2 NAV and 2 ADF unswitched RX inputs No internal alerting VOX LIVE ICS with squelch adjustment Pilot Co pilot boom mic support with pilot priority 4 PAX ICS only support Front panel master RX and ICS level controls Full support for Jumpmaster and observer VHF 1 VHF 2 FM1 FM2 INT and PA XCVRs 2 NAV and 2 ADF unswitched RX inputs KEYED LIVE ICS operation 4 PAX ICS only supported Front panel RX and ICS level controls PIL ISO annunciator and ICS CALL pushbutton VHF 1 VHF 2 TAC1 TAC2 TAC3 TAC4 XCVRs and PA Each XCVR has independent RX level adjustment NAV1 NAV2 ADF1 and DME switched Nav Aids 1 Direct Audio input 3 Audio alerts installed TX PA and locking ISO EMR switches No hand mic connection
46. mit Selector Switch Figure 3 Transmit Select Switch The transmit selector switch is a six position switch used to select the desired transceiver For the AA95 and AA96 this switch typically selects the PA function when rotated fully clockwise When the hand mic or transmit PTT switch is activated the mic will be coupled to the radio or PA selected The pilot has priority over the copilot during transmit operations Receive audio for the transceiver selected is automatically activated as a function of the rotary selector switch and no additional switching is needed to establish outside communication During transmit all audio selected is muted except the sidetone of the transceiver in use In the AA95 and AA97 s Direct Audio 2 also remains un muted during transmit The front panel TX indicator will illuminate green when either the pilot or co pilot transmits It will not light when the hand mic if installed is used 3 3 3 ICS Functions Intercom audio may be implemented in three modes LIVE on constantly VOX voice activated or KEYED active only when switched by ICS PTT switch 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 LIVE Mode Switch VOX Squelch ICS Mode Switch ICS Volume Control Control Figure 4 ICS Switches Section 3 Rev 1 00 Issue 4 Page 3 3 ENG FORM 806 0111 DOT CONFIDE
47. n Manual Table of Contents Title Description Introduction Product Description Design Features Specifications Electrical Specifications Physical Specifications Environmental Specifications Unit Nomenclature Installation Introduction Unpacking and Inspection Warranty Continued Airworthiness Installation Procedures Warnings Cautions Cabling and Wiring In line PTT Cordsets Post Installation Checks Adjustments and Connections Left Side Panel Adjustments Right Side Panel Adjustments Accessories Required But Not Supplied Installation Drawings Operation Introduction General Information Controls and Indicators Receive Audio Select Switches Transmit Selector Switch ICS Functions Optional Features ICS ISO and or PLT ISO Annunciators ICS CALL Annunciator ICS CALL Switch PAT ON OFF Switch ICS TIE SPLIT Switch Emergency Operation AA95 and AA97 models only Audio Alerting Functions AA95 and AA97 models only Direct Audio Internal Alerting Installation and Operation Manual ENG FORM 820 0115 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD Page QO N O h t t N G CO CO CO CO CO CO Page iv a 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual Section 1 Description 1 1 Introduction
48. nnection in the AA9x series is floating which will lead to incorrect keying of the intercom and radio systems if this type of cordset is used Section 2 Rev 1 00 Issue 4 Page 2 3 ENG FORM 805 0115 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual In line PTT cordsets can be a source for crosstalk if the MIC wire pair in the cordset is not shielded The source of the crosstalk is the high level Phones audio being coupled on to the MIC HI LO pair in the in line PTT cordset because of the lack of shielding for this wire pair Once the mic line is contaminated the undesired audio can be sent into the audio system as mic audio then processed and distributed to all other audio controllers via the ICS Tie Line 2 4 5 Post Installation Checks 2 4 5 1 Voltage Resistance Checks Do not attach the AA9x Series until the following conditions are met Check the following a Check P101 pins 16 and 17 for 28 Vdc relative to ground Check P101 pin lt 34 gt for continuity to ground less than 0 50 Check P102 pin 19 for lights buss voltage Check all Mic phone music and key lines for shorts to ground or adjacent pins O O O 2 4 5 2 Power On Checks Power up the aircraft s systems and confirm normal operation of all functions of the AA9x Series Refer to Section 3 Operation for specific opera
49. or 2 years from date of installation by an authorized NAT 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 NAT or its designated warranty repair center or any labour to remove or re install the defective unit in the aircraft Contact NAT for any questions regarding this warranty its applicability to your units and or for return authorization NAT 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 NAT DEALER Product for which a warranty card is not returned shall be warranted from date of manufacture 2 3 Continued Airworthiness Maintenance of the AA9x Series Single Channel Audio Controller is condition only Periodic maintenance of this product is not required Section 2 Rev 1 00 Issue 4 Page 2 1 ENG FORM 805 0115 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a m 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual 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
50. t operation in all modes Hand mic activation does not illuminate the TX light 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 0 Plug in any remaining headsets and check for correct ICS operation Note that an incorrect cordset drop cord or improper jack wiring may cause a wide range of problems from loss of audio to a tone heard in the headset For further information see section 2 4 4 above i To verify proper operation all functions and levels shall be checked in flight j Check preset adjustments are completed before aircraft departure Section 2 Rev 1 00 Issue 4 Page 2 4 ENG FORM 805 0115 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a 9 Series Single Channel Audio Controller SM56 Installation and Operation Manual 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 Adjustments and Connections The unit is shipped 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 sides of the unit and
51. tallation and Operation Manual Section 3 Operation 3 1 Introduction Information in this section consists of functional and operational procedures for the AA9x Series Single Channel Audio Controller Note The AA95 AA96 and AA97 series single channel audio controllers are customized units and may have unique operational features that are different to the options described or are not covered in this manual Any questions should be directed to the NAT Product Support Department 3 2 General Information HET TA AN AN gt AA F iz HF TA TA J T C NAV2 DME Rx voL 5 2 4 T A LZ L I AL T HF LIVE KEY Figure 1 AA9x Operator Accessible Controls The AA9x provides control for all aircraft audio allowing selection of transmit and receive audio LIVE KEYED or VOX intercom and interface for an additional hand held transmit microphone hand mic The AA95 and AA97 series of audio controllers allow selection of pilot isolation emergency operation Sidetone level is adjustable internally while receive RX and intercom ICS levels are adjustable on the front panel In most AA9x configurations all audio except the sidetone of the radio in use is muted during transmit for clarity In the AA95 and AA97 series of controllers the directly connected DIRECT AUDIO 2 input signal see Section 3 6 1 remains un muted during transmit I
52. tional details a Begin with only the Pilot s headset installed no hand mic Confirm correct radio operation both receive and transmit Check yoke or cyclic switch action Check radio audio inputs and selection of same b Ifthere is a music source in the system turn it on and verify that music is muted in the CREW mode and removed in the PLT ISO mode Check for proper mute operation Do not proceed until the radios are functioning correctly The S T sidetone trimpot accessible through the left side of the controller and the transceiver internal trimpot may have to be adjusted for correct balance for the pilot Adjustment of the individual radio RX levels should be set first with the AA9x series in Pilot ISO mode then adjust the AA9x series front panel RX master volume control level in NORMAL mode c Unusual buzzes hums or other background audio are symptomatic of multiple grounds or noisy external systems such as blowers or pumps sharing wiring with the audio system Failure to key or correctly modulate a transmitter is often the result of forgetting to connect all required grounds to the radio or external audio system d Check the ICS Modes ALL CREW PLT ISO and the manual Fail safe operation e Plug in the Co pilot s headset Check for correct ICS and SPLIT transmit operation Check that the Co pilot loses transmit capability during PLT ISO Check yoke switch functions f Plug in the hand mic if installed and test for correc
53. udible signals that the user will hear AUDIO ALERT 3 AUDIO ALERT 1 2 DIR AUD LEVEL TIME TONE RATE TONE RATE Figure 3 Right Side Panel Adjustments 2 5 2 1 DIR AUD LEVEL The DIR AUD LEVEL trimpot is used to adjust the audio level of the devices connected to the DIR AUD 1 input 2 5 2 2 AUDIO ALERTS AUDIO ALERT 1 is a single tone signal and AUDIO ALERTS 2 and 3 are two tone signals 2 5 2 3 TIME The duration of AUDIO ALERT 3 can be adjusted from one to three seconds using the TIME trimpot 2 5 2 4 TONE The pitch of the signals can be adjusted using the relevant TONE trimpot 2 5 2 5 RATE The cycling rate of the two tone signals can be adjusted using the RATE trimpots Note The number and type of adjustments is dependent on the features specific to the particular AA95 AA96 or AA97 configuration 2 6 Accessories Required But Not Supplied Installation kit p n AA90 IKC crimp NAT Part No D50S37SL IKC is required to complete the installation The kit consists of one 50 D min Female Crimp Kit D50SL IKC and one 37 Pin D min Female Crimp Kit D37SL IKC D50SL IKC consists of Quantity Description NAT Part No 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 Section 2 Rev 1 00 Issue 4 Page 2 6 ENG FORM 805 0115 DOT CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY
54. uitry Type Distortion Audio Noise Level Coupling Output Regulation Section 1 Rev 1 00 ENG FORM 800 0113 DOT 1 4 Specifications 1 4 1 Electrical Specifications Input Power Nominal 27 5 Nominal 0 50 A Max Lighting 27 5 160 mA Alert Power 27 5 Vdc Nominal 150 mA Max Input Signals Quantity 13 receive channels 7 mic channels 1 ICS tie channel 1 or 2 direct channels Audio level 2 5 Vrms for receiver inputs 0 25 Vrms for mic inputs 2 5 Vrms for direct audio inputs Impedance 1 10 for receive inputs 1 10 for mic inputs 1 6 10 for ICS tie input 1 3 10 for Direct Audio1 input 100 10 for Direct Audio 2 input Circuit Type All are single ended inputs Coupling 40 dB Keylines Pilot amp copilot transmit PTT Rear hand mic transmit PTT Pilot amp copilot ICS PTT 3 Alerts active low 6 Headphone outputs Up to 7 Transmitter mic outputs incl PA Up to 7 Transmitter keyline outputs incl PA 7 7 Vrms or 100 mW 20 dBm into 600 nominal 10 mW 10 dBm into 600 nominal 0 1mW 10 dBm 0 25 Vrms into 600 nominal 90 mVrms 10 into 600 nominal Headphones are balanced Mic and ICS Tie are single ended 1096 THD nominal power output gt 50 dB down from rated output no signal lt 40dB lt 10 distortion 3 dB max of rated output power at 400 and 75 of rated load Issue 4 Page 1 2 CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD a
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