Thales AHV1600 Operation And Installation Manual
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Thales AHV1600 Operation And Installation Manual

Radar altimeter system
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TO:
HOLDERS OF OPERATION AND INSTALLATION MANUAL P/N: 36719226-AB, revision No.
1, dated NOV 25/09 is attached and covers all components held by every operator.
P/N: 36719226-AB.
The OIM revision No. 1, dated NOV 25/09 is attached and covers all components held by
every operator.
FILING INSTRUCTIONS
Revision 1 replaces original issue.
Original issue is deleted.
HIGHLIGHTS:
To correct the OIM P/N: 36719226-AA Original issue.
OPERATION AND INSTALLATION MANUAL
AHV1600 RADAR ALTIMETER SYSTEM
TRANSMITTAL SHEET
TS Page 1
NOV 25/09

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  • Page 1 OPERATION AND INSTALLATION MANUAL AHV1600 RADAR ALTIMETER SYSTEM TRANSMITTAL SHEET HOLDERS OF OPERATION AND INSTALLATION MANUAL P/N: 36719226-AB, revision No. 1, dated NOV 25/09 is attached and covers all components held by every operator. P/N: 36719226-AB. The OIM revision No. 1, dated NOV 25/09 is attached and covers all components held by every operator.
  • Page 2 AHV1600 SYSTEM THIS PAGE INTENTIONALLY LEFT BLANK TS Page 2 NOV 25/09...
  • Page 3 THALES Communications PERATION NSTALLATION ANUAL AHV1600 Radar Altimeter System ORIGINAL ISSUE : July 16/09 : 36719226-AB TP Page 1/2 REVISION No : 01 Nov 25/09...
  • Page 4 AHV1600-SYSTEM THALES Communications TP Page 2/2 July 16/09...
  • Page 5 AHV1600-SYSTEM THALES Communications RECORD OF REVISIONS INSERTION INSERTION REVISION REVISION REVISION REVISION N° DATE DATE N° DATE DATE 2009/11/25 ROR Page 1/2 NOV 25/09...
  • Page 6 AHV1600-SYSTEM THALES Communications ROR Page 2/2 July 16/09...
  • Page 7 AHV1600-SYSTEM THALES Communications RECORD OF TEMPORARY REVISIONS TEMPORARY REVISIONS INSERTED DELETED N° PAGE N° DATE REVISION N° RTR Page 1/2 July 16/09...
  • Page 8 AHV1600-SYSTEM THALES Communications RTR Page 2/2 July 16/09...
  • Page 9 AHV1600-SYSTEM THALES Communications SERVICE BULLETIN LIST SERVICE REVISION REVISION SUBJECT BULLETIN N° N° DATE SBL Page 1/2 July 16/09...
  • Page 10 AHV1600-SYSTEM THALES Communications SBL Page 2/2 July 16/09...
  • Page 11 AHV1600-SYSTEM THALES COMMUNICATIONS LIST OF EFFECTIVE PAGES SUBJECT PAGE DATE SUBJECT PAGE DATE Title Page NOV 25/09 JULY 16/09 BLANK JULY 16/09 JULY 16/09 Record of Revisions NOV 25/09 JULY 16/09 BLANK JULY 16/09 JULY 16/09 Record of Temporary JULY 16/09...
  • Page 12 AHV1600-SYSTEM THALES Communications LEP Page 2/2 July 16/09...

  • Page 13: Table Of Contents

    POWER-UP BUILT IN TEST (PBIT).....................3 INITIATED BUILT IN TEST (IBIT) ......................3 C. CONTINUOUS BUILT IN TEST (CBIT) ....................3 AIRCRAFT INTERFACE ..........................3 PRESENTATION.............................101 AHV1600 RADAR ALTIMETER SYSTEM GENERAL DESCRIPTION..........101 AHV1600 TRANSCEIVER........................102 EXTERNAL CHARACTERISTICS ....................103 INTERNAL SUB-ASSEMBLIES ......................106 C. FUNCTIONAL CHARACTERISTICS ....................106 OPERATIONAL INTERFACES ......................117...
  • Page 14 AHV1600-SYSTEM THALES Communications PAGES FUNCTIONAL CONNECTIONS WITH RELATED EQUIPMENT............205 INTERFACES CONNECTIONS ......................205 GROUNDING AND BONDING......................206 C. COOLING OF THE EQUIPMENT .....................207 D. HANDLING ............................207 EQUIPMENT INPUTS / OUTPUTS ......................207 MAIN CONNECTOR J1 ........................207 RX/TX ANTENNA..........................210 OPERATION..............................301 RADAR ALTIMETER ENERGIZATION ....................301 FUNCTIONNAL TEST ..........................301...
  • Page 15 AHV1600-SYSTEM THALES COMMUNICATIONS TABLE OF FIGURES PAGES Figure 1 – AHV1600 TRANSCEIVER SYSTEM....................4 Figure 101 – AHV1600 RADAR ALTIMETER SYSTEM BLOCK DIAGRAM ..........101 AHV1600 TRANSCEIVER - GENERAL VIEW Figure 102 – .............102 Figure 103 – OVERALL DIMENSIONS .....................103 Figure 104 – MANUFACTURING SERIAL NUMBER LABEL ..............104 Figure 105 –...
  • Page 16 AHV1600-SYSTEM THALES Communications TF Page 2/2 July 16/09...

  • Page 17: Introduction

    AHV1600-SYSTEM THALES COMMUNICATIONS INTRODUCTION 1. GENERAL INFORMATION The manual contains the information for the installation and the operation of the AHV1600 Radar Altimeter P/N: for Aircraft. AHV1600-01-01 00 A 2. BLOCK PAGE NUMBERS FOR SECTIONS Each section has a separate block page number: −...

  • Page 18: Advisories

    AHV1600-SYSTEM THALES Communications 4. ADVISORIES A. SAFETY INSTRUCTIONS / ELECTROSTATIC DISCHARGE PRECAUTIONS This graphic symbol showing a hand on a dark background (to IEC 747-1 standard) means that the equipment on which it appears (assembly or subassembly) contains components sensitive to elec- trostatic discharges.

  • Page 19: Uncommon Abbreviations And Acronyms

    AHV1600-SYSTEM THALES COMMUNICATIONS 5. UNCOMMON ABBREVIATIONS AND ACRONYMS The following abbreviations, acronyms, and symbols are used in this manual: Abbreviation/Acronym Identification Analogical/Digital Above Ground Level Aircraft Installation Delay ANTenna Altimeter Unit Built In Test CBIT Continuous Built In Test Carriage Return...
  • Page 20 AHV1600-SYSTEM THALES Communications Abbreviation/Acronym Identification S.I. International System Saw Tooth Standing Wave Ratio Transmission Upper Significant Bit Voltage Controlled Oscillator INTRO Page 4 July 16/09...
  • Page 21 WEIGHT Length Width Height (kg) ≤ 2 kg Transceiver: AHV1600 190 max 90 max 95 max AHV1600-01-01 00 A Antenna: ANT140A 105.41 max 90.17 max 33 max 12352 0.130 ± 20 g 9599-607- Coaxial cables not provided IS Page 1...
  • Page 22 AHV1600-SYSTEM THALES Communications AHV1600 TRANSCEIVER TECHNICAL CHARACTERISTICS 1- Nominal power supply: 28 Vdc 2- Power consumption: 20 W max (18 W typical) 3- Power input interruption : ≤ 2 ms 4- Connection: MIL C 39012 (TNC / RF connectors), MIL C38999 (main connectors) 5- Performance: −...

  • Page 23: Ahv1600 Radar Altimeter Main Function

    1. AHV1600 RADAR ALTIMETER MAIN FUNCTION The main function of the AHV1600 Radar Altimeter is to provide the height information, via an ARINC 429 digital bus, to the aircraft navigation system, in a range from 0 ft up to 5000 ft.
  • Page 24 AHV1600-SYSTEM THALES Communications The AHV1600 Transceiver performs FM/CW modulation transmissions that are beat against the received reflection. The variable slope modulation allows the beat frequency to be maintained in a given bandwidth (window of 60 kHz to 110 kHz around centre frequency of 80 kHz). The window is then analysed through the equivalent of a 1 kHz bandwidth filter sweeping from 15 kHz to 110 kHz.

  • Page 25: Built In Test Function

    Transceiver upon receipt of the discrete input signal “FCT_TST“. This test is performed in 3s. C. CONTINUOUS BUILT IN TEST (CBIT) The AHV1600 Transceiver is carrying out a continuous test of performance of the system as a back- ground task. Continuous BIT provides coverage to the minimum extent possible without interfering with the normal Transceiver operation.
  • Page 26 Reception 4.2 /4.4 GHz Antenna Mother Board Power supply (Including I/O) HIRF Stage ARINC 429 lines Discretes RF signals I/O Dedicated Height and I/O maintenance RS232 lines status information Figure 1 – AHV1600 RADAR ALTIMETER SYSTEM Page 4 July 16/09...

  • Page 27: Presentation

    THALES COMMUNICATIONS PRESENTATION 1. AHV1600 RADAR ALTIMETER SYSTEM GENERAL DESCRIPTION The Radar Altimeter System, named AHV1600, consists of three LRU (Line Replaceable Unit) and is com- posed of: − one AHV1600 transceiver, − one antenna ANT-140A to transmit radio frequency (RF) signal, −...

  • Page 28: Ahv1600 Transceiver

    Configurable inputs (“AID<2..0>, AID_P and SDI_SEL” signals). 2. AHV1600 TRANSCEIVER The AHV1600 Transceiver is a compact and very light system. It is intended to fit the aircraft. It is fixed on the aircraft structure by means of four M6 screws.

  • Page 29: Figure 103 - Overall Dimensions

    AHV1600-SYSTEM THALES COMMUNICATIONS A. EXTERNAL CHARACTERISTICS (1) PHYSICAL CHARACTERISTICS Dimensions (see figure 103): max. 190 x 90 x 95 mm. The weight of the unit is < 2 kg. Figure 103 – OVERALL DIMENSIONS Note: all dimensions are in mm...

  • Page 30: Figure 104 - Manufacturing Serial Number Label

    Date of manufacturing Inspection stamp Figure 104 – MANUFACTURING SERIAL NUMBER LABEL (b) THALES Identification Label The THALES identification label is stuck on the left side (refer to Figure 102). One field pro- vides the following indication: Field Number Field THALES commercial part number Figure 105 –...

  • Page 31: Figure 106 - Amendment Label

    AHV1600-SYSTEM THALES COMMUNICATIONS (c) Amendment label Figure 106 – AMENDMENT LABEL (d) Specific label The specific label is stuck on the front panel (refer to Figure 102). It is divided into five fields, which provide the following indications: Field Number...
  • Page 32 AHV1600-SYSTEM THALES Communications B. INTERNAL SUB-ASSEMBLIES The AHV1600 Transceiver contains the following sub-assemblies: – The Digital chassis: • • • • Performs the High Intensity Radiated Field (HIRF) protection, internal module interconnection, digital and management processor capacity and power supply distribution, •...
  • Page 33 AHV1600-SYSTEM THALES COMMUNICATIONS when measured to the “M_GND” reference signal. • • • • Frame structure on IRSx TX HI/LO differential output serial line: • six words transmitted in accordance with the following chronological order: 1- Height data word label 164...

  • Page 34: Figure 108 - Organization Of Height Data Word Label "164

    AHV1600-SYSTEM THALES Communications Height data field: Bits<29..13>Height value Height range from 0 ft up to + 5500 ft LSB value 0.125 ft Height value coded in 2 complement on 17 bits (Sign bit<29> - LSB bit<13>) Status Matrix data field (BNR numeric data word): Bits<31..30>...
  • Page 35 AHV1600-SYSTEM THALES COMMUNICATIONS Source Destination Identifier (SDI) data field : Bits<10..9> Discrete input “SDI_SEL” Undefined Discrete grounded Discrete open Not used Aircraft Installation delay (AID) data field : Bits<14..11> AID Value (fte) AID_P AID<2..0> Reserved Configurable input value not authorized...

  • Page 36: Figure 109 - Organization Of Status Data Word Label "271

    AHV1600-SYSTEM THALES Communications Test inhibit data: Bits<18> Discrete input “TST_INH” Discrete grounded Discrete open Status Matrix data field (discrete data word): Bits<31..30> Validity Normal Operation (NO) Not used Not used Failure warning (FW) 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 13 12 11 10 Label «...
  • Page 37 AHV1600-SYSTEM THALES COMMUNICATIONS AHV1600 Transceiver function data field : Bits<18..17> AU Transceiver function” Search Track No function Reserved PBIT / IBIT data : Bits<19> PBIT / IBIT BIT in progress BIT not required AHV1600 Transceiver mode data field: Bits<21..20> AU Transceiver mode...

  • Page 38: Figure 110 - Organization Of Status Data Word Label "272

    AHV1600-SYSTEM THALES Communications Status Matrix data field (discrete data word): Bits<31..30> Validity Normal Operation (NO) Not used Not used Failure warning (FW) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 Label «...

  • Page 39: Figure 112 - Organization Of Intermediate Equipment Identifier Data Word Label "371

    AHV1600-SYSTEM THALES COMMUNICATIONS “Part Number” data field defined as per ten characters. e.g. “61778974AC” “Serial Number” data field defined as all characters from Part Number plus five number char- acters. e.g. “61778974AC11111” 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10...

  • Page 40: Figure 114 - Organization Of Status Data Word Label "377

    AHV1600-SYSTEM THALES Communications (e) Height data word label 377 description Label data field: Bits<8..1> Label value 111 111 11 Source Destination Identifier (SDI) data field : Bits<10..9> Discrete input “SDI_SEL” Undefined Discrete grounded Discrete open Not used Equipment identification data field: Bits<22..11>...
  • Page 41 AHV1600-SYSTEM THALES COMMUNICATIONS (f) Height data word label 165 description Label data field: Bits<8..1> Label value 101 011 10 Source Destination Identifier (SDI) data field : Bits<10..9> Discrete input “SDI_SEL” Undefined Discrete grounded Discrete open Not used Height data field: Bits<29..11>Height value...

  • Page 42: Figure 115 - Organization Of Height Data Word Label "165

    − Built In Test function not initiated when it is set to high level voltage (discrete open). To initiate the internal Built In Test function of the AHV1600 transceiver, the minimum time duration of “FCT_TST” discrete input signal shall be 200ms when measured at 50% level of the electrical changing voltage.
  • Page 43 − Maximum level voltage ≤ +32.2 VDC. when measured to the “M_GND” reference signal. To inhibit the internal Built In Test function of the AHV1600 transceiver, the minimum time du- ration of “TST_INH” discrete input signal shall be 200ms when measured at 50% level of the electrical changing voltage.
  • Page 44 AHV1600-SYSTEM THALES Communications : 0 Vdc ± 0.5 Vdc differential null level voltage differential output impedance : 75 Ω ± 5 Ω (b) When measured to the AID ground reference signal in loaded circuit : between ≥ - 11 Vdc and ≤ - 7.25 Vdc differential low level voltage : between ≥...
  • Page 45 Category F Salt Fog Category S Magnetic effect Category Z Category Z TCF declares that the AHV1600 Transceiver is able to Power input withstand momentary power interruption up to 2ms (Test condition 1 of table 16-3). Voltage spike Category A...
  • Page 46 4. ANTENNA ANT-140A A. GENERALITIES ON ANTENNA ANT-140A The ANT140A antenna is a flat antenna for AHV1600 Radar Altimeter. The complete installation of the Radar Altimeter requires two identical antennae ANT-140A: one for transmission (Tx) and one for reception (Rx). These two antennae must be suitably located and connected by coaxial cables to the transceiver.

  • Page 47: Figure 116 - Ant-140A Inner Side

    AHV1600-SYSTEM THALES COMMUNICATIONS Longitudinal Axle Figure 116 – ANT-140A INNER SIDE The outside bears the inscription “DO NOT PAINT”, as well as an antenna-positioning symbol. Figure 117 – ANT-140A OUTER SIDE A: Antenna-positioning symbol Page 121 July 16/09...
  • Page 48 AHV1600-SYSTEM THALES Communications C. FUNCTIONAL CHARACTERISTICS – Operating frequency band: 4.2 GHz – 4.4 GHz. – Match: • • • • The return loss on 50 ohms complies with the following diagram − Isotropic gain: • • • • ≥ 7 dBi from 4.2 GHz to 4.4 GHz −...
  • Page 49 AHV1600-SYSTEM THALES COMMUNICATIONS (2) AID DEFINITION Installation Delay (AID) is the total electrical length from the transceiver transmitting output port to the aircraft skin, via the transmitting antenna the add to the distance from the antenna to the ground, add to the distance from ground to receive antenna and back to the transceiver receiving output via the receiving antenna.
  • Page 51 (accord- ing to its specifications). D. MOUNTING The AHV1600 Transceiver is fixed on the platform by means of four M6 screws, without any pre- ferred orientation. E. INSTALLATION CONDITIONS The AHV1600 Radar altimeter normal installation conditions are described hereafter: −...
  • Page 52 2.5 milliohm. 2. STEP BY STEP TRANSCEIVER INSTALLATION The AHV1600 Transceiver is fitted with a main MIL-C-38999 series III, 37 contacts connector and two female MIL-C-39012/TNC coaxial connectors. Two antennae ANT140A – transmission and reception – are required for the AHV1600 Transceiver. They are connected by means of two coaxial cables to the AHV1600 Transceiver.
  • Page 53 AHV1600-SYSTEM THALES COMMUNICATIONS A. CHOICE OF ANTENNAE LOCATION − Choose the location of the antennae carefully. On it will depend the operation of the Trans- ceiver in all flight configurations. − Antennae are generally mounted: • Under the fuselage. • Such that the H fields are collinear - this configuration corresponds to maximum decoupling between antennae.

  • Page 54: Figure 201 - Ant-140A - Antennae Separation And Orientation

    AHV1600-SYSTEM THALES Communications Figure 201 – ANT-140A – ANTENNAE SEPARATION AND ORIENTATION B. ANTENNA MOUNTING Antennae must be flush-mounted, from below, in the lower part of the aircraft fuselage. Antennae connectors must imperatively face: − forwards for the front antenna, −...
  • Page 55 Type of connector mounted on antenna: 50 ohm female coaxial type TNC connector conforming to specification MIL-C-39012. 3. VERIFICATION When the AHV1600 Transceiver is installed, a verification of the operation must be done using the PBIT. This verification must be done in operational conditions. A. GROUND TESTS...

  • Page 56: Figure 202 - Surfaces Bonding Contact Outlines

    AHV1600-SYSTEM THALES Communications CONNECTOR CONNECTOR REFERENCE MATING CONNEC- FUNCTION LABEL TOR REFERENCE MT934-T15B35P- Main connector MIL C- 38999 / MS27468 T 15 B-35 PN M112 34MMBX-TNC-50- To Antenna TX MIL C 39012 1/1-2-NE 34MMBX-TNC-50- To Antenna RX MIL C 39012...
  • Page 57 THALES COMMUNICATIONS C. COOLING OF THE EQUIPMENT The AHV1600 on platform installation must take into account that heat dissipation for the Trans- ceiver is partially accomplished through natural convection requiring a minimum space between the Transceiver and the next equipment of 10 mm.
  • Page 58 AHV1600-SYSTEM THALES Communications Socket Contact Input (I) / Installation Require- Signal Name Wire Type Contact Gauge Output (O) ments Reserved Twisted/Shielded see Differential output serial TX429_HI_2 note 2&3 line Twisted/Shielded see Differential output serial TX429_HI_2 note 2&3 line Reserved Simple (as short as...
  • Page 59 AHV1600-SYSTEM THALES COMMUNICATIONS Socket Contact Input (I) / Installation Require- Signal Name Wire Type Contact Gauge Output (O) ments Reserved Reserved Electrical reference E_GND ground Simple (as short as SDI_SEL Configurable input signal possible) see note 4 Reserved Reserved Reserved...
  • Page 60 AHV1600-SYSTEM THALES Communications Note 4 : Simple wire type Note 5: The M_GND reference signal must be connected to the mechanical reference ground of the carrier B. RX/TX ANTENNA Connector Input (I) / Out- Installation Contact Gauge Signal Name Wire Type...

  • Page 61: Figure 203 - Interconnections

    AHV1600-SYSTEM THALES COMMUNICATIONS FCT_TST TST_INH TX429_HI_1 TX429_LO_1 ARINC 429 LINE TX429_HI_2 TX429_LO_2 ARINC 429 LINES AID2 P28V_1 +28Vdc (first) P28V_2 +28Vdc (second) RET28V_2 28Vdc RETURN (second) AID_P AHV1600 TRANSCEIVER AID0 INTERNAL AID1 DEVICES RET28V_1 28Vdc RETURN (first) E_GND SDI_SEL Figure 203 – INTERCONNECTIONS...
  • Page 63 1. RADAR ALTIMETER ENERGIZATION The AHV1600 radar altimeter is not provided with an “ON-OFF” switch. The equipment starts operating as soon as the + 28 VDC power supply is applied by a circuit breaker or other mean located on the helicopter front panel.
  • Page 64 AHV1600-SYSTEM THALES Communications 6. DEFAULT OPERATING INSTRUCTIONS Default Possible cause Corrective action No output data - Radar altimeter not powered - Check circuit breaker - Radar altimeter power supply failure - Change power supply module - wiring - Check wiring...

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