Nat AA38-3 Series Installation And Operation Manual
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Nat AA38-3 Series Installation And Operation Manual

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Installation and Operation Manual
AA38-3xx Series
Local ICS Loop
SM37
ISSUE 4.11
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 2004
The document reference is online, please check the correspondence between the online documentation and the printed version.

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Summary of Contents for Nat AA38-3 Series

  • Page 1 Installation and Operation Manual AA38-3xx Series Local ICS Loop SM37 ISSUE 4.11 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 2004 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 2 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 3 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 4 The document reference is online, please check the correspondence between the online documentation and the printed version.

  • Page 5: Table Of Contents

    AA38-3xx Series Local ICS Loop SM37 Installation and Operation Manual Table of Contents Section Title Page Description Introduction Product Description Design Features Specifications 1.4.1 Electrical Specifications 1.4.2 Physical Specifications 1.4.3 Environmental Specifications 1.4.4 Product Approval Unit Nomenclature Installation Introduction Unpacking and Inspection 2.2.1 Warranty Continued Airworthiness...
  • Page 6 The document reference is online, please check the correspondence between the online documentation and the printed version.

  • Page 7: Description

    The AA38-300 Local ICS Loop provides intercom functions for eight users with operation in HOT MIC or VOX mode. A switch-selectable NAT or Andrea tie line allows connection to multi-unit systems and radio or music can be connected at the AUX input.
  • Page 8 (AA38-301) 2 ICS tie channels 2 Aux input channels Audio Level 250 mVrms for mic inputs 0.34 Vrms for NAT ICS tie input 2.8 Vrms for Andrea ICS tie input 2.5 Vrms for Aux input Impedance 10% for mic inputs 1.6k...

  • Page 9: Physical Specifications

    Note: Applicable to AA38-300 and AA38-301 units serial number 3000 and up. Unit Nomenclature AA38-300 Intercom functions for eight users Selectable NAT ICS or Andrea Tie Line ICS volume, AUX volume and VOX controls Live and VOX Intercom modes VOX operation LED and 28 Vdc Power LED Section 1 Rev: 1.00...
  • Page 10 AA38-3xx Series Local ICS Loop SM37 Installation and Operation Manual AA38-301 Intercom functions for sixteen users Selectable NAT ICS or Andrea Tie Lines ICS volume, AUX volume and VOX controls Live and VOX Intercom modes VOX operation LED and 28 Vdc Power LED Section 1 ends Section 1 Rev: 1.00...

  • Page 11: Installation

    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.

  • Page 12: Installation Procedures

    2.4.3 Installation Options The AA38-300 can be configured for up to three NAT Tie Lines, or one Andrea Tie Line and each ‘section’ of the AA38-301 can be configured separately for these options. The switches that determine the installation configuration are ICS GAIN switches 1, 2, 3, and 4, and ICS MODE switches C1/C2 and C3/C4, accessible through the left hand side of the unit.
  • Page 13 ICS MODE opening(s) in the side of the unit. The diagrams below show one set of rocker switches for the AA38-300 and two for the AA38-301. Figure 2: ICS MODE Switch positions for Figure 3: ICS MODE Switch Positions 1, 2, or 3 NAT ICS Tie Lines for ANDREA Tie Lines Mode Switch Positions...

  • Page 14: Post-Installation Checks

    AA38-3xx Series Local ICS Loop SM37 Installation and Operation Manual 2.4.4 Post-Installation Checks 2.4.4.1 Voltage/Resistance Checks Do not attach the AA38-3xx until the following conditions are met. Check the following for the AA38-300: a) Check P101 pin 1 for +28 Vdc relative to ground. b) Check P101 pin 20 for continuity to ground (less than 0.5 ).

  • Page 15: Accessories Required But Not Supplied

    SM37 Installation and Operation Manual Accessories Required But Not Supplied Installation kit p/n AA38-IKC (crimp) is required to complete the installation. AA38-IKC consists of Quantity Description NAT Part No. D-min 37 Socket Housing 20-21-037 MS Crimp Socket 20-26-901 Jack Screw Set...
  • Page 16 &RQI L GHQW L DO DQG 3U RSU L HW DU \W R 1$7 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 17 &RQI L GHQW L DO DQG 3U RSU L HW DU \W R 1$7 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 18 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 19 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 20 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 21 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 22 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 23 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 24 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 25 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 26 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 27 The document reference is online, please check the correspondence between the online documentation and the printed version.
  • Page 28 The document reference is online, please check the correspondence between the online documentation and the printed version.

  • Page 29: Operation

    The AA38-300 provides intercom functions for eight users (sixteen for the AA38-301) with operation in HOT MIC or VOX mode. A switch-selectable NAT or Andrea tie line allows connection to multi-unit systems and an AUX input allows radio or music to be connected to the AA38.
  • Page 30 The document reference is online, please check the correspondence between the online documentation and the printed version.

This manual is also suitable for:

Aa38-300Aa38-301

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