Honeywell KMA28 operation manual Approval Basis, TSO Approval

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Bendix/King

KMA28

Audio Amplifier/Intercom/Marker Beacon Receiver

A six-station voice activated (VOX) intercom is included in the KMA 28. This system has the advanced IntelliVox® circuitry that eliminates manual adjustments. The system contains six separate VOX mic circuits, and only opens the microphone channel in use.

The intercom system incorporates pilot isolate and crew modes, two stereo (or mono de- pending on unit) music inputs with "Soft Mute," and LED indicators for swap and trans- mit indications. Intercom control is through front panel-mounted knob and 3 position mode switch. A single volume controls intercom level for the pilot and copilot. Passenger headphone volume is factory set, and adjusted in flight with headset-mounted volume controls. Passenger volume control is further adjustable through screwdriver access in the top of the unit. Intercom squelch is automatic.

A 3-light Marker Beacon receiver is integrated in the KMA 28. This provides the neces- sary Marker Beacon lights and audio indications necessary for an Instrument Landing System (ILS) approach.

1.4APPROVAL BASIS -

TSO Approval.

The KMA 28 Audio Selector Panel is FAA approved under TSO C50c (Audio Amplifi- ers) and TSO C35d (Marker Beacon Receivers). In addition, they are approved by the Joint Airworthiness Authorities under JTSO C50C and JAR-TSO 2C35d. The TSO holder and manufacturer is PS Engineering, Incorporated, Lenoir City Tenn., USA.

The KMA28 complies with relevant portions of EUROCAE RTCA MPS WG No. 7/70, DO-143 and (Marker Beacon Receivers), ED-14C/DO-160C (Environmental Conditions and Test Procedures for Airborne Equipment), ED12B/DO-178B (Software Considera- tions for Airborne Equipment) and ED- 18/DO-214 (Audio Systems Characteristics and Minimum Operational Performance Standards for Aircraft Audio Systems).

Operation is subject to the following conditions: This device may not cause harmful interference.

This device must accept any interference received, including interference that may cause undesired operation.

006-10565-0000

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Rev. 0, Sept. 2000

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Contents BENDIX/KING Table of Contents Cellular Interface Checkout Introduction Section I General InformationScope Equipment DescriptionTSO Approval Approval BasisTSO Compliance SpecificationsEquipment Supplied Intercom SpecificationsLicense Requirements Equipment Required but not SuppliedEquipment Installation Procedures Section II InstallationGeneral Information Unpacking and Preliminary InspectionConnector Assembly Mounting Rack InstallationCable Harness Wiring NoiseExisting PS Engineering PMA6000 installations Existing KMA-24 InstallationPower Communications Push-to-TalkUnswitched inputs Swap ModeIntercom wiring BacklightingPublic Address function Com 3 AudioMarker Installation Wireless telecommunications interface AdjustmentsCommunications Antenna Installation Notes Hook Switches KMA 28 Pin Assignments Operational Checkout Post Installation CheckoutUnit Installation Receiver Sensitivity Marker CheckoutCellular Interface Checkout Final InspectionAudio Selector Section III KMA28 OperationKey click Speaker AmplifierMicrophone Selector Power Switch /Emergency EMG OperationPublic Address PA Function Split Mode Swap Mode Switch from Com 1 to Com 2 remotelySplit Mode ICS Telephone ModeIntelliVox VOX-Squelch Intercom SystemIntercom Modes Volume ControlMono headsets in Stereo Installation Soft Mute and Soft Mute inhibit Telephone Operation if equipped with approved system Marker Beacon OperationWill lose intercom capability when it is in use Appendix a Installation Drawings Connector viewed from the rearTray Dimensions in inches Top View Tray Assembly Drawing Bottom Connector, J1 Appendix B Bottom Connector InterconnectJ2 TOP Connector Appendix C Top Connector InterconnectInstructions for FAA Form Instructions for Continuing AirworthinessConditions Section Conducted Tests