Thales Communications EVR718 EVR 716 VHF data radio User Manual OPERATION AND INSTALLATION MANUAL

THALES Communications EVR 716 VHF data radio OPERATION AND INSTALLATION MANUAL

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OPERATION AND INSTALLATION MANUAL

OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR716
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR716 LISTE DES RENVOISATA23-11-02FabricantP/NDate d'édition originale: 2000/02/15Date d'édition révision 2000/02/15
KVJEVR718F0057FIRST ISSUE: 2000/02/15Ref/Doc : 36710392-AAREVISION No.: 23-11-02 TP Page 1/22000/02/15OPERATION AND INSTALLATION MANUALEnhanced VHF RadioVHF Communications TransceiverPN : EVR716-11-0300AEVR716-11-0350A
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 SILL Page 1/22000/02/15SERVICE INFORMATION LETTER LISTSERVICEINFORMATIONLETTERNoINCLUDEDINREVISIONDATEOFINCORPORATION TITLE1 - - Not applicable for P/Ns :EVR716-11-0300A and EVR716-11-0350A.2 First Issue 2000/02/15 To upgrade the currentTransmitter (TX), Receiver (RX),and HIRF boards to industriallevel a re-layout of the printedcircuit.
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 LEP Page 1/22000/02/15LIST OF EFFECTIVE PAGESSUBJECT PAGE DATE SUBJECT PAGE DATETitle Page 1 2000/02/15 System 10-1 2000/02/152 Blank Description 10-2 2000/02/1510-3 2000/02/15Record of 1 2000/02/15 10-4 2000/02/15Revisions 2 Blank 10-5 2000/02/1510-6 2000/02/15Record of 1 2000/02/15Temporary 2 Blank External 20-1 2000/02/15Revisions Interfaces 20-2 2000/02/1520-3 2000/02/15Service 1 2000/02/15 20-4 2000/02/15Bulletin List 2 Blank 20-5 2000/02/1520-6 2000/02/15Service 1 2000/02/15 20-7 2000/02/15Information 2 Blank 20-8 BlankLetter List Installation 30-1 2000/02/15List of 1 2000/02/15 30-2 BlankEffective 2 BlankPages Operating 40-1 2000/02/15Instructions 40-2 2000/02/15Table of 1 2000/02/15 40-3 2000/02/15Contents 2 Blank 40-4 BlankList of 1 2000/02/15Illustrations 2 BlankIntroduction 1 2000/02/152 2000/02/153 2000/02/154BlankR : Revised (to be replaced)D : Deleted (to be removed)N : New (to be incorporated)
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 RR Page 1/22000/02/15REV. ISSUE INSERTEDNo. DATE DATE BYREV. ISSUE INSERTEDNo. DATE DATE BYRECORD OF REVISIONS
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 RTR Page 1/22000/02/15RECORD OF TEMPORARY REVISIONSTEMPORARYREV Nr PAGE NUMBER ISSUE DATE BY DATEREMOVED BY
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 SBL Page 1/22000/02/15SERVICE BULLETIN LISTSERVICEBULLETINNUMBERREVINCLUDEDINREVISIONDATEOFINCORPORATIONTITLE
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 TC Page 1/22000/02/15TABLE OF CONTENTSSUBJECT PAGEINTRODUCTION........................................................................................................................INTRO-11. General.................................................................................................................................INTRO-12. Uncommon Abbreviations /Acronyms..................................................................................INTRO-2SYSTEM DESCRIPTION...................................................................................................................10-11. Function and Composition..........................................................................................................10-12. Mechanical Characteristics (see figures 10-3 and 10-4)............................................................10-43. Electrical Characteristics.............................................................................................................10-4EXTERNAL INTERFACES.................................................................................................................20-11. Interwiring....................................................................................................................................20-12. Electrical Power Supply ......................................................................................................20-7/20-83. ARINC 429 Links.................................................................................................................20-7/20-8INSTALLATION ......................................................................................................................... 30-1/30-21. Environment ........................................................................................................................30-1/30-22. First Installation Check Out.................................................................................................30-1/30-23. Mechanical Installation........................................................................................................30-1/30-24. Interwiring............................................................................................................................30-1/30-2OPERATING INSTRUCTION.............................................................................................................40-11. Energization of the Equipment....................................................................................................40-12. Normal Operating Modes............................................................................................................40-13. Default Operating Instructions ............................................................................................40-3/40-4
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 LI Page 1/22000/02/15LIST OF ILLUSTRATIONSFIGURE PAGE10-1 - GENERAL VIEW........................................................................................................10-210-2 - INTERFACE BLOCK DIAGRAM ...............................................................................10-210-3 - MECHANICAL CHARACTERISTICS........................................................................10-510-4 - MECHANICAL CHARACTERISTICS........................................................................10-6
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Introduction Page 12000/02/15INTRODUCTION1. GeneralThis Operation and Installation Manual includes information related to the operation andinstallation of the THOMSON-CSF COMMUNICATIONS EVR716 Enhanced VHF RadioCommunications Transceiver.The Operation and Installation instructions are presented in the following sections:Introduction.10 - System Description.20 - External Interfaces.30 - Installation.40 - Operating Instruction.CAUTION: THE EQUIPMENT IN THIS MANUAL IS SUBJECT TO CHANGE. BEFOREATTEMPTING ANY OPERATION ON THE EQUIPMENT COVERED IN THISMANUAL, VERIFY THAT YOU HAVE COMPLETE AND UP-TO-DATEPUBLICATIONS BY REFERRING TO THE APPLICABLE PUBLICATIONS,SERVICE BULLETIN, SERVICE BULLETIN LIST, SERVICE INFORMATIONLETTER INDEXES.Refer to the Table of Contents for the page location of applicable sections.An asterisk flagnote *[ ] in place of the page number indicates that no special instructions areprovided since the function can be performed using standard industry practices.A list of uncommon/acronyms abbreviations used in this manual is described in paragraph 2 ofthe INTRODUCTION SECTION. This manual will be revised as necessary to reflect currentinformation.We welcome your comments concerning this manual. Although every effort has been made tokeep it free of errors, some may occurs. When reporting a specific problem, please describe itbriefly and include the manual part number, the paragraph or figure number, and the pagenumber.Send your comments to:SEXTANTAérodrome de VillacoublayB.P.5978 141 VELIZY-VILLACOUBLAY CEDEX
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Introduction Page 22000/02/152. Uncommon Abbreviations /AcronymsABBREVIATIONS/ACRONYMS IDENTIFICATIONACARS Aircraft Communication Addressing and Reporting SystemAMU Audio Management UnitATC Air Traffic ControlBIT Built In TestCFDS Centralized Fault Display SystemCMU Communications Management UnitCSMA Carrier Sense Multiple AccessDFS Data Frequency SystemFM Frequency ModulationHz HertzLED Light Emitting DiodeLF Low FrequencyLO Local OscillatorLRU Line Replaceable UnitMHz MegahertzMU Management UnitOMS On-board Maintenance SystemP/N Part NumberRx ReceiverSDI Source Destination IdentifierSELCAL SELective CALlingSRU Shop Replaceable UnitT/R Transmitter/ReceiverTx Transmitter(Continued)
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Introduction Page 3/42000/02/15ABBREVIATIONS/ACRONYMS IDENTIFICATIONUHF Ultra High FrequencyVAC Voltage Alternative CurrentVDC Voltage Direct CurrentVHF Very High FrequencyVHFCP VHF Control PanelEVR Enhanced VHF Radio
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 10-12000/02/15SYSTEM DESCRIPTION1. Function and CompositionThe Radio communication airborne system (see figure 10-1), known as the EVR716, is a VHFtransceiver operating in the aeronautical band (118 MHz to 137 MHz), used by Air TransportAircraft as a primary equipment for communications with the ground ATC infrastructure (incontinental areas) or for communications between aircrafts (relay, emergency).The EVR716 transceiver includes:− On the rear panel:• an ARINC 600 connector, size 1.− On the front panel:• two attaching lugs,• a handle,• a test pushbutton,• six display LEDs. The EVR716 transceiver is identified by labels stuck on its front panel. The first label mentions:− the equipment name,− the TSO,− the Quality Control,− the serial number (S/N),− the factory clearance date. The second label mentions the service bulletin numbers applied. The third label mentions the commercial reference. The fourth label mentions the QAC. Aboard the aircraft (see figure 10-2), the EVR716 transceiver operates with the items ofequipment below:− a Data Frequency System (DFS) which can be an RCU (Radio Control Unit or control unit)or an RMP (Radio Management Panel) to agree with the aircraft configuration,
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 10-22000/02/15 A0Z-MAA1 General viewFigure 10-1 Interface block diagramFigure 10-2 Handle Attaching lug Test pushbutton Display LEDs ARINC 600 connector Rear panel
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 10-32000/02/15 EVR 716AudioAntenna RF inDiscretAudioSelectorPanel(ASP)Freq inMike in PTTAudio outCMU/MUCommunicationsManagementUnitCMUDataIn/OutARINC429 HSAiborne orPortableData LoaderDiscretARINC429 HSData LoaderEnable DataIn/OutACARSDiscretAudioDataKeyline Data Link,Data InputSELCALor DataOutputAudioDiscretAnalogOthersSDI CodeGround/AirSelf TestMax Trans Cut offVoice/Data SelectReserved for AGCKey EventDiscretsARINC429 LSAudioVHFControlPanel(VHFCP)OMS/CFDSAutomaticTestEquipment(ATE)ARINC429 LS SerialLinePOWER SUPPLY+27.5 VDCGroundMike inSquelch DisableA0Z-SA-A2x
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 10-42000/02/15− an ACARS MU (Management Unit, ARINC 724 or 724A) or a CMU (CommunicationsManagement Unit, ARINC 758),− an Audio Management Unit (AMU), audio control panel (microphone, loudspeakers),− a maintenance computer : OMS (ARINC 624) or CFDS (ARINC 604),− a VHF antenna.2. Mechanical Characteristics (see figures 10-3 and 10-4)DESIGNATION DIMENSIONS (mm) WEIGHT (kg)T/R Unit EVR716 3 MCU to ARINC 600ie 200 x 94 x 387.5 4.450 ± 0.0503. Electrical Characteristics− Frequency range : 117.975 MHz to 137 MHz− Transmitted power : 16 W− Power Supply : 28 VDC− Modes of operation:• Mode OA : Analogue voice transmission, 25 kHz channel spacing• Mode OB : Analogue voice transmission, 8.33 kHz channel spacing• Mode 1A : Data, 25 kHz channel spacing,AM-MSK modulation (2.4 kb/s),external modem, CSMA access,ACARS protocol.
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 10-52000/02/15NOTE: All dimensions are in mm.A0Z-MAA2Mechanical characteristicsFigure 10-3
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 10-62000/02/15 57,3 323 52 92 5 3,6 0,52 53,563,5O 3 194 0-0,1 319,5301313CENTRE OF GRAVITYOUTLET AREA INTLET AREA +-318 5+-BOTTOM VIEWRIGHT VIEWTOP VIEWNOTE : All dimensions are in mm.160 5+-O 3A0Z-MAA2NOTE: All dimensions are in mm. Mechanical characteristicsFigure 10-4
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 20-12000/02/15EXTERNAL INTERFACES1. InterwiringThe inputs/outputs go through the ARINC 600 rear connector and the front panel.The ARINC 600 rear connector has the three parts below:− the 60-way Top Part (TP) with the contacts used for the ATE (TP5A to TP7D),− the 60-way Middle Part (MP) with all the transceiver inputs (discrete, ARINC bus),− the Bottom Part (BP) with the power supply contacts and the antenna coaxial connector(five contacts). The detailed characteristics of inputs/outputs are given in the followings tables. TOP PART OF THE CONNECTOR Pin number Signal name Type I/O To/From TP1A ManufacturerIdentifier TP1B ManufacturerIdentifier TP1C Part number ortype number TP1D Part number ortype number TP2A TP2B TP2C COMMON TP2DTP3A - TP3B - TP3C - TP3DTP4A - TP4B - TP4C - TP4D Not used TP5A SELECTMode ATE Pinprogramming I (Continued)
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 20-22000/02/15 TOP PART OF THE CONNECTOR (continued) Pin number Signal name Type I/O To/From TP5B RS232Transmission Serial bus O ManagementModule TP5C DC Ground TP5D RS232 Reception Serial bus I TP6A LED 1 Discrete O ManagementModule TP6B LED 2 Discrete O ManagementModule TP6C LED 3 Discrete O ManagementModule TP6D LED 4 Discrete O ManagementModule TP7A LED 5 Discrete O ManagementModule TP7B Reserved forAGC O TP7C Future Spare TP7D Flash Writeenable Pin programming I TP8C - TP8D - TP9C - TP9DTP10D - TP11A - TP11B - TP11CTP11D - TP12A - TP12B - TP12CTP12D - TP13A - TP13B - TP13CTP13D - TP14A - TP14B - TP14CTP14D - TP15A - TP15B - TP15CTP15D Future Spare TP8A P5VT TP8B P15VT TP9A Reserved
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 20-32000/02/15 TOP PART OF THE CONNECTOR (continued) Pin number Signal name Type I/O To/From TP9B Reserved TP10A BLOSQLT Discrete O TP10B CANOCT Discrete O TP10C COMP MIDDLE PART OF THE CONNECTOR Pin number Signal name Type I/O To/From MP1A Hi Mike Input I MP1B Lo Mike Input I MP1C PTT Mike Input Discrete I MP1D Key Event Discrete O Management Module MP2A Max TRANSCut-off Discrete I MP2B Mike Input MP2CMP2D Data loaderInput ARINC429 HighSpeed I MP3AMP3BMP3C Optional(RemoteSquelch) I MP3D DC Ground MP4A Self Test Discrete I MP4B Audio Ground (Continued)
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 20-42000/02/15 MIDDLE PART OF THE CONNECTOR (continued) Pin number Signal name Type I/O To/From MP4CMP4D Data LoaderOutput ARINC429 HighSpeed O Management Module MP5AMP5B Data Link InputHIData Link InputLO I MP5C Reserved for716 compatibility MP5D 8.33 kHzprogram for 716compatibility DiscreteGroundedfor T/Rwith8.33 KHz O MP6AMP6B Data fromOMS/CFDS #1Input Port A ARINC429 LowSpeed I MP6CMP6D Data fromOMS/CFDS #2Input Port B ARINC429 LowSpeed I MP7AMP7B Data fromARDU Port B ARINC429 LowSpeed I MP7C Voice/DataSelect Discrete I MP7D Data Key Line Discrete I MP8A Reserved Discrete MP8B Data LoaderEnable Discrete I MP8C Reserved MP8D Data Key LineReturn Ground MP9A SDI Code Input Discrete I
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 20-52000/02/15 MIDDLE PART OF THE CONNECTOR (continued) Pin number Signal name Type I/O To/From MP9B SDI Code Input Discrete I MP9C Ground MP9D Reserved forAGC O MP10A Reserved MP10B InterlockingControl input MP10CMP10D Data to bothCMUsOutput Port ARINC429 HighSpeed O Management Module MP11AMP11B Data fromARCDU Port A ARINC429 LowSpeed I MP11C Reserved I MP11D Data SelectDiscrete Discrete I MP12AMP12B Data from CMU#1 Input Port A ARINC 429High Speed I MP12CMP12D Data from CMU#2 Input Port B ARINC 429High Speed I MP13AMP13B SELCAL Audioand Data Output O Receiver Module MP13C Squelch Disable Discrete I MP13D Squelch Disablereturn MP14A Reserved I MP14B Ground/Air Discrete I (Continued)
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 20-62000/02/15 MIDDLE PART OF THE CONNECTOR (continued) Pin number Signal name Type I/O To/From MP14CMP14D CDS/ARCDU/SCP ARINC 429 LowSpeed O ManagementModule MP15AMP15B Audio/Sidetoneoutput O ReceiverModule MP15C Muting Discrete O ManagementModule MP15D Muting Return(Ground) Ground BOTTOM PART OF THE CONNECTOR Pin number Signal name Type I/O To/From BP1 Antenna RF I/O Antenna /ReceiverModule BP2 Power input+ 27.5 VDC I BP3 Spare BP4 Power InputGround I BP5 Not used
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 20-7/20-82000/02/15 The links with the aircraft environment are distributed as follows:− Antenna Input/Output via a coaxial insert located in the lower part of the rear connector.− Power supply inputs.− Discrete Inputs/Outputs.− Serial ARINC 429 link (four low speed inputs and one output, three high speed inputs andtwo outputs).2. Electrical Power SupplyThe EVR716 transceiver is directly connected to the aircraft 28 VDC primary power supply viathe aircraft switchboard.3. ARINC 429 LinksThe EVR716 transceiver has four links by ARINC 429 bus:− a link with the frequency selection equipment, two low speed inputs (MP7A/B, MP11A/B),− a link with ARINC 615-1 software downloading system, one high speed input and one highspeed output (MP2C/D, MP4C/D),− a link with the OMS/CFDS on-board maintenance systems, two low speed inputs and onelow speed output (MP6A/B, MP6C/D, MP14C/D),− a link with the (C)MUs, two high speed inputs and one high speed output (MP12A/B,MP12C/D, MP10C/D).
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 30-1/30-22000/02/15INSTALLATION1. EnvironmentThe EVR716 transceiver is provided for the following environmental conditions:− Operating temperature : - 40°C to + 70°C (- 40°F to + 158°F)− Storage temperature : - 55°C to + 85°C (- 67°F to + 185°F)− Ventilation : The EVR716 transceiver has an inlet air area on its bottomface and an outlet air area on its top face (see figure10-4).2. First Installation Check OutPrior to install the EVR716 transceiver, check all interwiring for continuity and isolation.Install and connect the EVR716 transceiver (see paragraph 3).Energize the equipment and check that the green LED (PASS) lights on.3. Mechanical InstallationThe EVR716 transceiver is provided to be mounted in a rack in the aircraft. The EVR716transceiver is equipped with two ARINC 600 attaching lugs (see figure 10-1). The mechanicalinstallation complies with requirements as defined by the ARINC 600 specifications.The figures 10-2 and 10-3 show the mechanical characteristics of the EVR716 transceiver.After installation, energize the equipment and check that the green LED (PASS) lights on.4. InterwiringThe interwiring complies with requirements as defined by the ARINC 600 specifications.
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 40-12000/02/15OPERATING INSTRUCTION1. Energization of the EquipmentThe EVR716 transceiver is not provided with an "ON-OFF" switch. The EVR716 transceiverstarts operating as soon as 28 VDC is applied to the connector of the EVR716 unit.2. Normal Operating ModesThe EVR716 transceiver is not provided with operating buttons. It operate via the aircraftcontrols.A. Operational StateThis is the EVR716 transceiver normal operating. A BITE device initializing the cyclic tests allows checking operation of the EVR716 transceiver and indicating failures.B. Modes(1)Operating ModesThe operating modes are the following:(a) Mode 0A− 25 kHz analog voice transmission (ED-23B, DO-186A : receiver class C,transmitter class 3; ARINC 716).− RF modulation : Amplitude modulation with double side bands.− 25 kHz channelling.− Link with the microphone : normal audio input/output.(b) Mode 0B− 8.33 kHz analog voice transmission (ED-23B, DO-186A : receiver class E,transmitter class 5; ARINC 716).− RF modulation : Amplitude modulation with double side bands.− 8.33 kHz channelling.− Link with the microphone : normal audio input/output.(c) Mode 1A− Data transmission with modem outside the transceiver. ACARS protocol(ARINC 716, ARINC 618).− RF modulation : Minimum Shift Keying Amplitude Modulation(MSK-AM).− Channelling : 25 kHz.− Rate : 2.4 kb/s.− Access to the CSMA : non-persistent. NOTE : This modem function is performed by the (C)MU)− Link with the (C)MU : twisted pair analog signal.
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 40-22000/02/15(2) Default ModeAt power up, the default mode is mode 0A, tuned to the fast tuned frequency (before switching off).NOTE: In less than one second, the aircraft control provides the ARINC 429 wordindicating the active frequency use.(3) Change of ModePossible modes are ARINC 716 VOICE (0A or 0B modes) and ARINC 716 data (mode 1A).The selection is determined by:− the Voice/Data discrete ("V" :open state; "D" : grounded state),− the content of the ARINC 429 DFS bus label word,− the activity of the ARINC 429 bus (C)MU ("active" if the EVR716 transceiverreceives the 270 label every second),− the content of the label 270 word which determines if one (C)MU can be declaredprimary.C. Maintenance StatesTwo maintenance states are to be considered:(1) On-Line Maintenance (Aircraft Grounded)In this state, the EVR716 transceiver is in the same environment as in its operational state. This state is activated either by power up or by tests initiated by a pushbutton (TEST) on the front panel (see figure 10-1).During the tests, the equipment is not operational. Initiated tests are also allowed by maintenance software control.The result of the test is displayed on six LEDs on the front panel (see figure 10-3), saved on the NVM (Non Volatile Memory).(2) Off-Line MaintenanceIn this state, the EVR716 transceiver is not in its operational system environment but in a technical environment (test bench, maintenance workshop, etc.). The activation of this state is possible only when pins TP5A and MP14B are grounded. This state allowsthe downloading of the functional and maintenance software. The tests provided in this state allow an investigation at the SRU level.The result of the tests is displayed on six LEDs on the front panel and five LEDs located on the DPU (Digital Processing Unit) module indicating a failure code (SRU level).
OPERATION AND INSTALLATION MANUALKVJEVR718Enhanced VHF RadioEVR71623-11-02 Page 40-3/40-42000/02/153. Default Operating InstructionsThe result of the tests activated either by power up or by the "TEST" pushbutton on thefront panel, is displayed on six LEDs on the front panel (see figure 10-3).The following table presents the different cases :LED LIGHTING CAUSE CORRECTIVE ACTIONS"FAIL LRU" Red comes on when the operatorinitiated tests (init orpushbutton) detect an internalfault on the EVR716transceiver (except on ARINC429 bus or discrete inputs).Replace the EVR716transceiver."FAIL IN" Red comes on when the operatorinitiated tests (init orpushbutton) detect an inputfault on ARINC 429 bus ordiscrete inputs.− Check the interwiring.− Replace the EVR716transceiver"PASS" Green comes on when the operatorinitiated tests (init orpushbutton) do not detect anyfault.Not applicable"VSWR" Red comes on when VSWRmeasured by the EVR716transceiver is higher than 2:1.Not applicable"TX" Green comes on when the EVR716transceiver is in transmitmode.Not applicable"RX" Green comes on when the EVR716transceiver is in receive mode. Not applicable

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