Leonardo S p a TRA100B Part 87 Aircraft Licensed Transmitter operating at 1090MHz User Manual tman 1124 02x

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TRA-100B Mode S Transponder (TRA-100B)

Honeywell

Component Maintenance Manual (CMM)

MAN-1124/01 T

Issue No. 02

Date 02-08-2016

Leonardo Finmeccanica S.p.A.

Piazza Montegrappa, 4

00195 - Roma

ITALY

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Revision List

Date of Issue Issue Number Revision History

18-12-2015 01 First Issue

02-08-2016 02 Updated to include Honeywell comments

This document is composed of 112 pages.

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TABLE OF CONTENTS

1GENERAL........................................................................................................................................................9

1.1TRA‐100BMODESTRANSPONDER‐LISTOFABBREVIATIONS..........................................................................................9

1.2TRA‐100BMODESTRANSPONDER–CONFIGURATION................................................................................................10

1.3TRA‐100BMODESTRANSPONDER–INTRODUCTION..................................................................................................12

1.4TRA‐100BMODESTRANSPONDER‐SCHEMATICDIAGRAM..........................................................................................13

1.5TRA‐100BMODESTRANSPONDER–GENERALWARNINGSANDCAUTIONSANDRELATEDSAFETYDATA................................14

1.5.1GeneralSafety..........................................................................................................................................14

1.5.2ListofWarningsandCautions..................................................................................................................14

1.6TRA‐100BMODESTRANSPONDER–SUPPORTEQUIPMENTANDTOOLS........................................................................16

1.6.1StandardAGEandTools...........................................................................................................................16

1.6.2Software...................................................................................................................................................16

1.6.3Consumables,MaterialandExpendables................................................................................................16

1.7TRA‐100BMODESTRANSPONDER–PACKAGING,HANDLING,STORAGEANDTRANSPORTATION.......................................17

1.7.1Packaging‐General.................................................................................................................................17

1.7.1.1PackagingProcedure.......................................................................................................................................17

1.7.1.2IdentificationLabel..........................................................................................................................................17

1.7.1.3ReshipmentPackagingProcedure...................................................................................................................17

1.7.1.4OriginalPackaging...........................................................................................................................................18

1.7.1.5InstructionofReshipment...............................................................................................................................18

1.7.2Handling...................................................................................................................................................18

1.7.3Storage.....................................................................................................................................................18

1.7.3.1StorageData....................................................................................................................................................18

1.7.4Transportation.........................................................................................................................................18

1.7.5ESDHandlingProcedure...........................................................................................................................19

1.7.6HazardousMaterials................................................................................................................................19

2DESCRIPTION................................................................................................................................................20

2.1TRA‐100BMODESTRANPONDER–DESCRIPTIONOFHOWITISMADEANDITSFUNCTION..................................................20

3TECHNICALDATA..........................................................................................................................................24

3.1TRA‐100BMODESTRANSPONDER–TECHNICALDATA.............................................................................................24

3.1.1GeneralTechnicalData............................................................................................................................24

3.1.2LabelsData...............................................................................................................................................26

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3.1.3EnvironmentalCertificationandCharacteristics......................................................................................28

3.1.4ConnectorsData.......................................................................................................................................34

4OPERATION..................................................................................................................................................40

4.1TRA‐100BMODESTRANSPONDER–MODESOPERATION............................................................................................40

4.1.1ATCRBSSystemOperation.......................................................................................................................42

4.1.2ATCRBSTransmissionOverview...............................................................................................................43

4.1.3OVERVIEWOFMODES.............................................................................................................................45

4.1.3.1SignalCharacteristics.......................................................................................................................................45

4.1.3.2InterrogationProcess......................................................................................................................................46

5INSTALLATION..............................................................................................................................................49

5.1TRA‐100BMODESTRANSPONDER–REPLACEPROCEDURES.........................................................................................49

6FAULTISOLATION.........................................................................................................................................51

6.1GENERAL............................................................................................................................................................51

6.2FAILUREDATASTRUCTURE................................................................................................................................51

6.2.1FlightInformationHeader........................................................................................................................51

6.2.2FaultRecordformat.................................................................................................................................53

6.3FAILURELOCATIONONAIRCRAFT......................................................................................................................56

6.3.1ONA/CTroubleshootingprocedure.........................................................................................................57

6.3.2NVMDownloadprocedure.......................................................................................................................60

6.3.2.1TechsatNetLoaderprocedure:.......................................................................................................................60

6.3.3NVMData.................................................................................................................................................64

6.4FAILURELOCATIONOFFAIRCRAFT....................................................................................................................66

6.4.1STTEDescription.......................................................................................................................................66

6.4.2OFFA/CTroubleshootingprocedure........................................................................................................69

6.4.3Connectionprocedure..............................................................................................................................71

6.4.4FaultFinding.............................................................................................................................................71

6.4.5Checkoutprocedure.................................................................................................................................72

6.4.5.1Checkoflightningprotectiondevicespresence..............................................................................................72

6.4.5.2Testofhardware/softwareperformancesinnormaluse................................................................................77

7MAINTENANCE.............................................................................................................................................90

7.1TRA‐100BMODESTRANSPONDER–FIRSTLEVELMAINTENANCE................................................................................90

7.1.1OnAircraftMaintenance(Scheduled)......................................................................................................90

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7.1.2OnAircraftMaintenance(Unscheduled)..................................................................................................90

7.1.3Servicing...................................................................................................................................................90

7.2TRA‐100BMODESTRANSPONDER–CLEANING........................................................................................................91

7.3TRA‐100BMODESTRANSPONDER–INSPECTION......................................................................................................93

7.4TRA‐100BMODESTRANSPONDER–SECONDLEVELMAINTENANCE..............................................................................95

7.4.1TRA‐100B,DataProcessorandI/O–Replaceprocedure.........................................................................95

7.4.2TRA‐100B,RFSubassembly–Replaceprocedure.....................................................................................99

7.4.3TRA‐100B,ACPowerSupply(ACPS)–Replaceprocedure......................................................................102

7.4.4TRA‐100B,DCPowerSupply(DCPS)–Replaceprocedure.....................................................................106

7.4.5TRA‐100B,WiredChassis(WC)–Replaceprocedure..............................................................................110

8ILLUSTRATEDPARTSDATA..........................................................................................................................112

8.1TRA‐100BMODESTRANSPONDER‐ILLUSTRATEDPARTSDATA....................................................................................112

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LIST OF ILLUSTRATIONS

FIGURE 1-1 – TRA-100B MODE S TRANSPONDER - CONFIGURATION .................................................................. 11

FIGURE 1-2 – TRA-100B MODE S TRANSPONDER - SCHEMATIC DIAGRAM ........................................................... 13

FIGURE 2-1 – TRA-100B MODE S TRANSPONDER - DESCRIPTION OF HOW IT IS MADE .......................................... 20

FIGURE 2-2 – TRA-100B MODE S TRANSPONDER – FUNCTIONAL DIAGRAM ........................................................ 23

FIGURE 3-1 – TRA-100B MODE S TRANSPONDER – TECHNICAL DATA ............................................................... 25

FIGURE 3-1 – TRA-100B MODE S TRANSPONDER – LABELS LAYOUT .................................................................. 27

FIGURE 3-3 – TRA-100B MODE S TRANSPONDER – CONNECTORS ..................................................................... 34

FIGURE 4-1 – ATCRBS SYSTEM ........................................................................................................................ 42

FIGURE 4-2 – ATCRBS INTERROGATION WITHOUT SIDE LOBE SUPPRESSION (SLS) ............................................ 44

FIGURE 4-3 – ATCRBS INTERROGATION WITH SIDE LOBE SUPPRESSION ............................................................ 44

FIGURE 4-4 – INTERMODE (MODE A/C AND S) INTERROGATION ........................................................................... 47

FIGURE 4-5 – MODE S INTERROGATION PULSE SEQUENCE ................................................................................. 47

FIGURE 4-6 – MODE S REPLY ............................................................................................................................ 48

FIGURE 5-1 – TRA-100B MODE S TRANSPONDER - REPLACE PROCEDURES ....................................................... 50

FIGURE 6-1 – TRA-100B STTE (FRONT AND RIGHT VIEWS) ................................................................................ 67

FIGURE 6-2 – TRA-100B STTE (REAR AND LEFT VIEWS) .................................................................................... 68

FIGURE 6-3 – TRA-100B - FRONT PANEL LED ................................................................................................... 69

FIGURE 6-4 – TRA-100B – OFF A/C TROUBLESHOOTING STTE NVM INTERFACE .............................................. 84

FIGURE 6-5 – TRA-100B – OFF A/C TROUBLESHOOTING – DIAGNOSTIC PROPERTIES (1) ................................... 85

FIGURE 6-6 – TRA-100B – OFF A/C TROUBLESHOOTING – DIAGNOSTIC PROPERTIES (2) ................................... 86

FIGURE 6-4 – TRA-100B – OFF A/C TROUBLESHOOTING .................................................................................. 87

FIGURE 6-5 – TRA-100B – OFF A/C TROUBLESHOOTING – DIAGNOSTIC PROPERTIES (1) ................................... 88

FIGURE 6-6 – TRA-100B – OFF A/C TROUBLESHOOTING – DIAGNOSTIC PROPERTIES (2) ................................... 89

FIGURE 7-1 – TRA-100B, DATA PROCESSOR AND I/O – REPLACE PROCEDURE ................................................... 97

FIGURE 7-2 – TRA-100B, DATA PROCESSOR AND I/O – REPLACE PROCEDURE (POSITION) .................................. 98

FIGURE 7-3 –TRA-100B, RF SUBASSEMBLY – REPLACE PROCEDURE ............................................................... 101

FIGURE 7-4 – TRA-100B, AC POWER SUPPLY (ACPS) – REPLACE PROCEDURE ............................................... 104

FIGURE 7-5 – TRA-100B, ACPS AND DCPS – REPLACE PROCEDURE (POSITION) ............................................. 105

FIGURE 7-6 – TRA-100B, DC POWER SUPPLY (DCPS) – REPLACE PROCEDURE .............................................. 108

FIGURE 7-7 – TRA-100B, ACPS AND DCPS – REPLACE PROCEDURE (POSITION) ............................................. 109

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LIST OF TABLES

TABLE 1-1 - LIST OF ABBREVIATIONS .................................................................................................................... 9

TABLE 1-2 – TRA-100B - CONFIGURATION DATA ............................................................................................... 10

TABLE 1-3 - TRA-100B – GENERAL WARNINGS, CAUTIONS AND RELATED SAFETY DATA ..................................... 14

TABLE 1-4 - TRA-100B – STANDARD AGE AND TOOLS ....................................................................................... 16

TABLE 1-5 – TRA-100B - SOFTWARE ................................................................................................................. 16

TABLE 1-6 – TRA-100B - CONSUMABLES, MATERIAL AND EXPENDABLES ............................................................ 16

TABLE 3-1 – TRA-100B - TECHNICAL DATA – GENERAL ...................................................................................... 24

TABLE 3-2 – TRA-100B – DO-160G CERTIFICATION CATEGORIES ..................................................................... 28

TABLE 3-3 – TRA-100B – ABD100 1.2 G CERTIFICATION CATEGORIES .............................................................. 29

TABLE 3-4 – TRA-100B – ABD100 1.6 D CERTIFICATION CATEGORIES .............................................................. 31 

TABLE 3-5 – TRA-100B – ABD100 1.8 E CERTIFICATION CATEGORIES .............................................................. 31

TABLE 3-6 – TRA-100B – D6-44800-1 CERTIFICATION CATEGORIES .................................................................. 31

TABLE 3-7 – TRA-100B – D6-81926 CERTIFICATION CATEGORIES ..................................................................... 31

TABLE 3-8 – TRA-100B – MIL STD 810F CERTIFICATION CATEGORIES .............................................................. 31

TABLE 3-9 – TRA-100B – ASTM D1149 CERTIFICATION CATEGORIES ............................................................... 32

TABLE 3-10 – TRA-100B – D6/ 16050-4 CERTIFICATION CATEGORIES ............................................................... 32

TABLE 3-11 – TRA-100B – D6-44800-1 CERTIFICATION CATEGORIES ................................................................ 33

TABLE 3-12 – TRA-100B - TECHNICAL DATA – CONNECTORS ............................................................................. 34

TABLE 3-13 – TRA-100B - TECHNICAL DATA – MAIN CONNECTOR PIN MAPPING .................................................. 35

TABLE 6-1 – TRA-100B – INTERNAL FAULTS ..................................................................................................... 54

TABLE 6-2 – TRA-100B – EXTERNAL FAULTS ..................................................................................................... 55

TABLE 6-3 – TRA-100B – MALFUNCTION SYMPTOMS ......................................................................................... 57

TABLE 6-4 - EXTERNAL FAULTS MAINTENANCE PROCEDURE ................................................................................ 64

TABLE 6-5 – TRA-100B STTE COMPOSITION .................................................................................................... 66

TABLE 6-6 – TRA-100B - FRONT PANEL LED INDICATORS .................................................................................. 70

TABLE 6-7 – TRA-100B - TRANSZORB TEST PARAMETERS ................................................................................. 73

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1 GENERAL

1.1 TRA-100B MODE S TRANSPONDER - LIST OF ABBREVIATIONS

Table 1-1 - List of Abbreviations

Symbol Instruction

AC Alternate Current

AD, A/D Analogue to Digital

BIT Built In Test

BITE Built In Test Equipment

CBIT Continuous Built In Test

DC Direct Current

GND GrouND

HF High Frequency

IBIT Interruptive Built In Test

LRU Line Replaceable Unit

MT Mounting Tray

NSN Nato Stock Number

PBIT Power-on Built In Test

RF Radio Frequency

RX Receiver

TX Transmitter

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1.2 TRA-100B MODE S TRANSPONDER – CONFIGURATION

This manual is applicable to the following TRA-100B Mode S Transponder Part Numbers (Table

1-2):

Table 1-2 – TRA-100B - Configuration Data

2 Ref.

Figure 1-1

Description Part Number Qty

1

TRA-100B Mode S Transponder

TAC-6001/03

TAC-6003/03

TAC-6004/03

1

2 Wired Chassis (WC) TAE-6001/03 1

3 Data Processor and I/O (DPIO) TAQ-5432/03 1

4 RF – Subassembly (RF) TAG-5501/03 1

5 AC Power Supply (ACPS) TAG-5433/03 1

6 DC Power Supply (DCPS) TAG-5435/03 1

NI TRA-100B Operative SW TBR-6001/01 1

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Figure 1-1 – TRA-100B Mode S Transponder - Configuration

6

5

2

4

3

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2.1 TRA-100B Mode S TRANSPONDER – INTRODUCTION

The TRA-100B Mode S Transponder is a remote mounted avionics device which provides the

Mode S Transponder function required by Technical Standard Order (ETSO-C112d).

The XPDR also provides Extended Squitter ADS-B Out function required by ETSO-C166b/.

The TRA-100B Modes S Transponder is designed to be a Level 2 transponder.

It includes the capabilities of a Level 1 Transponder:

• Mode A identity and Mode C pressure-altitude reporting,

• Air Traffic Control Radar Beacon System (ATCRBS)/Mode-S and Mode S all-call

transactions,

• Addressed surveillance altitude and identity transaction,

• Lockout protocols,

• Basic data protocols except data link capability reporting, and

• Air-to-air service and squitter transactions.

The TRA-100B includes the capabilities of a Level 2 Transponder:

• Bi-directional air-to-air information exchange

• Ground-to-air data uplink, Comm-A

• Air-to-ground data downlink, Comm-B

• Multisite message protocol

• Data link capability reporting

• Aircraft identification reporting

• Traffic Alert and Collision Avoidance System (TCAS)/Airborne Collision Avoidance System

(ACAS) crosslink capability

• Overlay Command Capability

In addition, the Transponder contains the following optional additional features:

• TCAS Compatibility (a)

• Antenna Diversity (d)

• Extended Squitter (e)

• Enhanced Surveillance (including Elementary Surveillance) (n)

• Surveillance Identifier Code (s)

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2.2 TRA-100B Mode S TRANSPONDER - SCHEMATIC DIAGRAM

Figure 1-2 – TRA-100B Mode S Transponder - Schematic Diagram

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2.3 TRA-100B MODE S TRANSPONDER – GENERAL WARNINGS AND

CAUTIONS AND RELATED SAFETY DATA

2.3.1 General Safety

 Before you do maintenance procedures on the Unit make sure that you know the

necessary safety data.

 Before you work on the Unit, make sure that the electrical power supply is Removed from

the Unit. Energized circuits can cause injury to persons.

 Before you work on the Unit, make sure that you have the correct personal safety

equipment. You must use or wear the correct personal safety equipment to prevent

injuries.

 Handle all the equipment carefully. This will help to prevent damage to it.

2.3.2 List of Warnings and Cautions

Table 1-3 - TRA-100B – General Warnings, Cautions And Related Safety Data

Symbol Message

WARNING

Make sure that the equipment is disconnected from all electrical power

sources before you do any maintenance work.

WARNING

The internal components use high voltages that can cause injury or

death to personnel.

WARNING

Perform task in ventilated area and use protective clothing.

WARNING

Denatured Alcohol, Electro Contact Cleaner and Conductive Anti-

seizure Compound are dangerous materials. Make sure that you know

the safety precautions and the first aid instructions.

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CAUTION

The internal components of the equipment are Electro-Static Discharge

(ESD) sensitive devices. Do not touch the pins of the electrical

connectors. Electrostatic discharge can cause damage to these

components.

Install protective caps on all electrical connectors immediately after you

disconnect them to prevent the ingress of dirt.

WARNING

Always handle the equipment with care to prevent damage.

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2.4 TRA-100B MODE S TRANSPONDER – SUPPORT EQUIPMENT AND

TOOLS

2.4.1 Standard AGE and Tools

Table 1-4 - TRA-100B – Standard AGE and Tools

Nomenclature Identification Qty

Soft Brush Local Supply 1

Torque Screwdriver bit holder Local Supply 1

Bit cross-point sz. 2 Local Supply 1

Bit hex open end 8 mm. Local Supply 1

2.4.2 Software

Table 1-5 – TRA-100B - Software

Nomenclature Identification

TRA-100B_MPC STTE Software TIU-0077/01.01*

*The STTE Software is applicable for the Transponder configurations described in this manual.

2.4.3 Consumables, Material and Expendables

Table 1-6 – TRA-100B - Consumables, Material and Expendables

Nomenclature Specification Commercial

designation Manufacturer Qty Remarks

Denatured Alcohol AA-M-L.422e S-738 D9478 A/R Dangerous

material

Electro Contact

Cleaner QD 02130 1 02344 1 Dangerous

material

Lint free cloth 1 Local supply

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2.5 TRA-100B MODE S TRANSPONDER – PACKAGING, HANDLING,

STORAGE AND TRANSPORTATION

These procedures are applicable to the Transponder and to all its units.

2.5.1 Packaging - General

Packaging includes all the activities necessary to prepare the units for transportation.

The packaging procedures are mandatory to avoid any damage to the units during transport,

handling and storage.

 Each unit is packed separately in its own container.

 The packaging procedures are applicable to all the units of the system.

 Packaging is carried out according to “Commercial Standard”.

 The packaging procedures are applicable to the initial packaging of the units, the return after

repair packaging as well as the reshipment procedure.

2.5.1.1 Packaging Procedure

Insert the unit in a shielding envelope and close it with a warning ESD adhesive label

Wrap the unit in protective ‘bubble wrap’, hold together with adhesive tape.

Put the wrapped item in a commercial cardboard box of suitable dimensions.

Line the box with “Instapak foam” or ‘Pluriball” in a way to prevent the unit from moving inside

the box.

Seal the box with adhesive tape.

Place an identification label on the outside of the IP package describing the contents.

2.5.1.2 Identification Label

The label on the box must include the following data:

Company Name or Logo (Sender)

Quantity of items per pack

Contract Number

Description of part

Part Number

Gross Weight

NSN (if applicable)

Details of receiver.

2.5.1.3 Reshipment Packaging Procedure

Follow the packaging procedures described above.

The units do not require any special preparation for reshipment. Observe general methods and

conditions requested for handling electronic equipment.

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2.5.1.4 Original Packaging

Commercial Standard packaging is generally considered as not reusable. It is the responsibility of

the packing personnel to decide whether packaging material can be safely reused.

2.5.1.5 Instruction of Reshipment

No special disassembly is required prior to shipping the entire units. Follow the instructions

described in the Initial packaging procedures to pack the units for reshipment.

2.5.2 Handling

The TRA-100B does not require special procedures for unit removal and installation

The gross weight is indicated on the identification label placed on the outside of each box.

The weight of each LRU of the TRA-100B Mode S Transponder is less 7 Kg excluding

packaging.

Special provisions and equipment (forklift etc.) are not required for handling the units.

The containers of the equipment do not have handles or lifting devices.

No lifting requirements are indicated on the containers.

Handle the units with care to avoid damage.

2.5.3 Storage

The conditions listed in this document are relative to storage in a closed depot/warehouse and do

not take into consideration water exposure, salt spray etc.

The equipment must remain in the original shipment containers during storage.

If containers have been opened for shipment acceptance and they are stored in a humid

environment, put dehumidifying bags inside the containers.

The containers must be sealed again by using adhesive tape, this precaution is necessary to avoid

damage from dust and humidity. Commercially available, desiccant (dehumidifying bags) can be

used.

2.5.3.1 Storage Data

The environmental conditions while in storage must respect the following limits:

 Maximum Relative Humidity <75%

 Storage Temperature: Between -55 °C and +70°C;

 Storage Life: 10 years

 Store far from magnetic, electrical and electrostatic sources

2.5.4 Transportation

The following transport conditions are applicable to the equipment and its components:

• Temperature: Between -55 °C and +70 °C

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• Maximum Relative Humidity: <75%

• Thermal shock: 10 °C/min

• Altitude: Max. 15000m (70 000ft)

The equipment must remain within its package during transport.

2.5.5 ESD Handling Procedure

The Unit contains static devices. Be careful when you work on electrostatic discharge sensitive

devices:

 Use an approved wrist strap that is connected to a ground point only when no electrical power

is supplied to the system.

 Do not touch the electric pins.

 Use conductive blanking caps.

 Use always an antistatic transport tray to move the equipment.

 Install the protective caps on the electrical pins, after their disconnection, to protect them from

electrostatic charge and avoid the entry of dust.

 Do not open the Unit except in an approved static-free workshop.

 Electrostatic discharge can cause damage to equipment or injury personnel.

2.5.6 Hazardous Materials

None.

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3 DESCRIPTION

3.1 TRA-100B MODE S TRANPONDER – DESCRIPTION OF HOW IT IS MADE

AND ITS FUNCTION

The TRA-100B Mode S Transponder unit is made up of the modules shown in Figure 3-1 and

listed below:

 Wired Chassis (WC)

 Data Processor and I/O (DPIO)

 RF – Subassembly (RF)

 AC Power Supply (ACPS)

 DC Power Supply (DCPS)

Figure 3-1 – TRA-100B Mode S Transponder - Description of how it is made

DC Power Supply

AC Power Supply

Wired Chassis

RF Module

Data Processor and I/O

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The RFD, TXA and RXA modules combined are referred to as the RF module, and are responsible

for reception and transmission functions. The processing functions are carried out by the Data

Processor as well as the Transponder Software (TS).

The I/O Interface Module together with the Wired Chassis include all the internal and external

interfaces, while the AC and DC Power Supply are responsible for the supply of power to the unit

(see Figure 3-2).

The Wired Chassis (WCH) implements all mechanical functions and electrical interconnections

between modules; it includes:

 I/O lines filtering

 Power lines filtering

 IO lines transient protection

 AC input transformer

 Front panel LEDs

The ACPS module receives 24 and 48 VAC from WCH transformer and generates internal 28VDC

to DCPS.

It generates AC INPUT FAIL signal to DCPS for BIT purposes

The DCPS module receives 28 VDC from ACPS and generates internal voltages to all modules:

 It manages internal ON/OFF state

 It manages power interruptions

 It manages Power Supply BIT and protections

The DPIO-RX module includes two main sections:

1. DPIO for Processing and I/O

2. RX for RX IF processing

The processing section includes FPGA, Controller and Memories (RAM, FLASH) and manages:

 all I/O processing

 Interrogation/Reply protocols

 TCAS and ADS-B functions

 its own board BIT and Equipment BIT by collecting information from all modules

 RF modules control (RFFE/TX)

 I/O Section includes all I/O circuitry to implement discretes, 429 and other interfaces

The RX Section performs dual channel (TOP/BOT) IF RX processing:

 IF Selectivity filtering

 Log detection

 ADC

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The RFFE Module performs dual (TOP/BOT) antenna interface implementing the following

functions:

 TX/RX selection

 TX path antenna switch (TOP/BOT)

 TX path harmonic filtering

 RX dual channel (TOP/BOT) independent pre-selection and LNA

 RX dual channel (TOP/BOT) independent IF down conversion including LO generation

 Self test signal generation

 Self test Path selection

The TX Module performs all TX functions:

 1090 MHz LO generation

 Pulse modulation

 RF amplification up to required level

 It includes Tank capacitor to support fast current delivery to TX devices during reply pulse

trains generation

 Tank Capacitor is also used to support hold-up during power interruption between 10ms

and 200ms

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Figure 3-2 – TRA-100B Mode S Transponder – Functional Diagram

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4 TECHNICAL DATA

4.1 TRA-100B MODE S TRANSPONDER – TECHNICAL DATA

4.1.1 General Technical Data

Table 4-1 – TRA-100B - Technical data – General

Data Value

Manufacturers Part Numbers

TAC-6001/03

TAC-6003/03

TAC-6004/03

Weight (Total mass) < 7 kg

Dimensions 194 mm x 124 x 318 (Height x Width x Depth)

Output power 400W ± 100 W

Operating temperature -55°C +70°C

Storage Conditions -55°C +70°C

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Figure 4-1 – TRA-100B Mode S Transponder – Technical Data

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4.1.2 Labels Data

The TRA-100B provides three different labels (ref. 3):

Leonardo Finmeccanica Id. Label (1)

Honeywell Id. Label (2)

Certifications Label (3)

The Leonardo Finmeccanica Id. Label contains the following info:

Data Value

Manufacturers Part Numbers

TAC-6001/03

TAC-6003/03

TAC-6004/03

Manufacturer Leonardo Finmeccanica

Manufacturing Site Montevarchi

Manufacturing Country Italy

SER. Serial Number

MFR. Manufacturer SNS (A0610)

DMF Date of Manufacturing (mmyyy)

AMDT Amendement

Weight (Total mass) 14.5 Lbs. (6,58 Kg)

Power 115 VAC/380-420 Hz.

The Honeywell Id. Label contains the following info:

Data Value

Owner HONEYWELL, International

Owner Part Number

PNR 066-01212-0101

PNR 066-01212-0301

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Amendement -

The Certification Label contains the following info:

Data Value

ETSO/TSO Certification ETSO C112d: L2 adens, Class 1

ETSO C166b: Class A2 Tx only

DO/ED

178B/12B B: D

254/80 B

160/14G

PNR 066-01212-0101

TSO C112d: xxx C166b: xxx

DO-178B: B,D DO-160G

AMDT 01 02 03 04 05 06 07 08 09 10

11 12 13 14 15 16 17 18 19 20

TRA-100B TRANSPONDER

SER

MFR A0069

DMF

WEIGHT 14,5 Lbs (6,58 Kg)

POWER 115 VAC/380-420 Hz

MFR PNR

TAC-6001/01

Selex ES S.p.A

QA

01

M00000000

01/2013

REMOVE COVER TO ACCESS

SUPPORT TEST CONNECTORS

Figure 4-2 – TRA-100B Mode S Transponder – Labels layout

2

3

1

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4.1.3 Environmental Certification and Characteristics

The TRA-100B meets the environmental conditions of the Radio Technical Commission for the

Aeronautics (RTCA) document number DO-160G “Environmental Conditions and Test Procedures

for Airline Electronic/Electrical Equipment and Instruments” (Table 4-2).

Additionally to the DO-160G, the following documents have been used to further certification:

 ABD100 1.2 G (Table 4-3)

 ABD100 1.6 D (Table 4-4)

 ABD100 1.8 E (Table 4-5)

 D6-44800-1 (Table 4-6)

 D6-81926 (Table 4-7)

 MIL STD 810F (Table 4-8)

 ASTM D1149 (Table 4-9)

 D6/ 16050-4 (Table 4-10)

 D6-44800-1 (

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Table 4-11)

Table 4-2 – TRA-100B – DO-160G Certification Categories

DO-160G Title Category

4.5.1 Ground Survival Low Temperature Test A2

4.5.1 Ground Survival Low Temperature Test Short-

Time Operating Low Temperature

F2

4.5.2 Operating Low Temperature Test A2

4.5.2 Operating Low Temperature Test F2

4.5.3 Ground Survival High Temperature Test Short-

Time High Operating

A2F2

4.5.4 Operating High Temperature Test A2F2

4.6.1 Altitude Test A2

4.6.1 Altitude Test F2

4.6.2 Decompression Test A2

4.6.3 Overpressure Test A2

5 Temperature Variation B

6 Humidity A, B

7 Operational Shocks and Crash Safety B, D, A

8 Vibrations S H

9 Explosive Atmosphere E

10 Waterproofness W Y

11 Fluids Susceptibility F

12 Sand and Dust D

13 Fungus Resistance F

15 Magnetic Effect A, Z

16 Power Input A, A(CF)HZPI

17 Voltage Spike A

18 Audio Frequency Conducted Susceptibility -

Power Inputs

R(CF), K

19 Induced Signal Susceptibility ZCX

20 Radio Frequency Susceptibility Radiated R

20 Radio Frequency Susceptibility Conducted R

21 Emission of Radio Frequency Energy M, L

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DO-160G Title Category

22 Lightning Induced Transient Susceptibility A3J3L3

24 Icing A

25 Electrostatic Discharge (ESD) A

26 Fire Flammability C

Table 4-3 – TRA-100B – ABD100 1.2 G Certification Categories

ABD100

1.2 G

Title Category

1.2.2 Decompression Test A2

1.2.3 Overpressure Test A2

1.6.1 Vibration Operational Vibrations:

random and sinusoidal: a)

Curve 1 b) Curve 2 of the

note " Environmental

directives for new equipment

installed on SA program "

§3.7.1. Operational

Vibrations Vibrations due to

Engine Fan Blade

Loss/WINDMILLING: See

PTS Appendix 1 ( SINE 3-

30Hz SINE, 5.5 G max) and

PTS Appendix 2 (SINE 3-

15.5 Hz SINE, 2.2 Gmax).

The procedures and the

levels given in both these

appendices shall be used.

1.18 Constant Acceleration Functional Test B

3.3.3 Radio Frequency Susceptibility Radiated R

3.3.2 Radio Frequency Susceptibility Conducted Doc ref 483.0156/95 issue 6

or issue 8.1 cat C The test

procedure and set-up i.a.w.

DO- 160 Sect. 20

3.2 Lightning Induced Transient Susceptibility Damage testing

ABD0100.1.2 §3.2 Doc ref

483.0156/95 issue 6 or issue

8.1 cat C The Supplier shall

use the Pin injection test

method. Note: The note

483.0156/95 is applicable for

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ABD100

1.2 G

Title Category

levels for damage testing

and functional upset

Functional Upset Testing

(Multiple Stroke/Pulse)

ABD0100.1.2 §3.2 Doc ref

483.0156/95 issue 6 or issue

8.1 cat C Note 1: For

Multiple Strokes and Multiple

Burst bundle injection, the

shield of any other shielded

cable of the bundle (except

coaxial cables) shall be

disconnected from any

ground point. Note 2: Wave

form for Multiple Burst shall

be the one defined in DO-

160F with levels and

procedures defined in

483.0156/95

3.5 Electrostatic Discharge (ESD) B

Table 4-4 – TRA-100B – ABD100 1.6 D Certification Categories

ABD0100

1.6 D

Title Category

4.6 Fire/Flammability/Toxicity/Smoke/Gas Emission Pressurized Area

Table 4-5 – TRA-100B – ABD100 1.8 E Certification Categories

ABD100

1.8 E

Title Category

1.3 Dielectric and Insulation Resistance Testing ABD0100.1.8 §1.3

2 Power Input ABD0100.1.8 ADB0100 1.8

§1.2 ABD0100.1.8 §2.0

ABD0100.1.8 Table A

2.4

Voltage Spike ABD0100.1.2 §3.4.2

ABD0100.1.8, tables 3-A

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Table 4-6 – TRA-100B – D6-44800-1 Certification Categories

D6-

44800-1

Title Category

4.2.5.7 Temperature Variation B

Table 4-7 – TRA-100B – D6-81926 Certification Categories

D6-81926 Title Category

3.1 Bench Handling Shock N/A

8 Random Vibration B2

8 Sinusoidal Vibration Zone 2, Cat. C

4 Constant Acceleration Functional Test Zone 2, Cat. C

3.2

Shipping Container Shock Test Packaged Equipment free

fall from 30in (75cm)

Table 4-8 – TRA-100B – MIL STD 810F Certification Categories

MIL STD

810F

Title Category

516.5 Bench Handling Shock MIL STD 810F Method 516.5

Procedure VI

Table 4-9 – TRA-100B – ASTM D1149 Certification Categories

ASTM

D1149

Title Category

ASTM

D1149

Ozone Testing Ozone environment of 0.25

ppm per volume sea level

equivalent

Table 4-10 – TRA-100B – D6/ 16050-4 Certification Categories

D6/

16050-4

Title Category

7.2.2 Audio Frequency Electric Filed Susceptibility Perform Test as specified in

D6- 16050-4

7.2.3 Audio Frequency Magnetic Field Susceptibility -

Wiring

Perform Test as specified in

D6- 16050-4

7.2.4 Audio Frequency Magnetic Field Susceptibility - Perform Test as specified in

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D6/

16050-4

Title Category

Equipment D6- 16050-4

7.5.2 Induced Spike Transient Susceptibility Perform Test as specified in

D6- 16050-4

7.5.3 Bus Switching Transient Susceptibility Perform Test as specified in

D6- 16050-4

8.1 Interference Voltage on Signal Lines Perform Test as specified in

D6- 16050-4

8.3.1 AC Capacitive Coupling Perform Test as specified in

D6- 16050-4

8.3.2 AF Inductive Coupling Perform Test as specified in

D6- 16050-4

7.3.1 Radio Frequency Susceptibility Conducted R

8.4.2 RF Radiated Emissions Perform Test as specified in

D6- 16050-4

8.4.1 RF Conducted Emissions Perform Test as specified in

D6- 16050-4

7.4.4 Lightning Induced Transient Susceptibility L2

7.1 Electrostatic Discharge (ESD) Perform test per section 7.1

of D6- 16050-4

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Table 4-11 – TRA-100B – D6-44800-1 Certification Categories

D6-

44800-1

Section

Title Category

5.19

Loss of Cooling

330 minutes loss of cooling

per Table 2.4 of D6-84901

Rev B. Test is per D6-44800-

1, Table 2b, for Long Term

Loss of Cooling (Class: IIb -

Case cooled, robust

temperature condition). The

test can be perform using an

ambient temperature by

using the procedure in D6-

44800-1, Section 5.19

Procedure B, in lieu of

performing the test via

controlling the sidewall

temperature of the

equipment. Make special

notice to the Flag Notes in

table 2b for how this test is

performed.

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4.1.4 Connectors Data

Table 4-12 – TRA-100B - Technical data – Connectors

Ref. Figure 4-3 Connector Function

1 Main Connector Data and Control I/O

2 Test Connector Maintenance Retrieval

Figure 4-3 – TRA-100B Mode S Transponder – Connectors

1

2

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Table 4-13 – TRA-100B - Technical data – Main Connector Pin Mapping

TP Section

Pin I/O Type Description

TP 1A Input Program AC Length/Width A MSB

TP 1B Input Program Strobed AC Length/Width B

TP 1C Input Program Strobed AC Length/Width C LSB

TP 1D Input Program Strobed GPS Ant Long Off A (MSB)

TP 1E Input Program Strobed GPS Ant Long Off B

TP 1F Input Program Strobed GPS Ant Long Off C (LSB)

TP 1G Input Program Strobed Navigation Accuracy Category Velocity (NACV)

TP 1H Input Program Strobed System Design Assurance (SDA)

TP 1J Input Differential GPS Time Mark 1A

TP 1K Input Differential GPS Time Mark 1B

TP 2A Input 429 FMC/GNSS #1 In #1 A

TP 2B Input 429 FMC/GNSS #1 In #1 B

TP 2C Input 429 IRS/FMS/Data Conc. A

TP 2D Input 429 IRS/FMS/Data Conc. B

TP 2E Output 429 General Output #1 A

TP 2F Output 429 General Output #1 B

TP 2G Input 429 ATSU In A

TP 2H Input 429 ATSU In B

TP 2J Input Discrete Data Load Enable

TP 2K Input Program ADS-B FAIL Disable

TP 3A Output Discrete ADS-B Fail Disc Out

TP 3B Output Discrete Transponder fail #2 Disc output

TP 3C Input Program Cable Delay Program Top/Bot

TP 3D Input Program Cable Delay Program Value #1

TP 3E Input Program Cable Delay Program Value #2

TP 3F Common Common Common

TP 3G Input Discrete SDI 429 Bus Address Logic Input

TP 3H Input Discrete SDI 429 Bus Address Logic Input

TP 3J Common Common Common

TP 3K Common Common Common

TP 4A N/A N/A No Connect

TP 4B N/A N/A No Connect

TP 4C N/A N/A No Connect

TP 4D N/A N/A No Connect

TP 4E N/A N/A No Connect

TP 4F N/A N/A No Connect

TP 4G N/A N/A No Connect

TP 4H N/A N/A No Connect

TP 4J N/A N/A No Connect

TP 4K N/A N/A No Connect

TP 5A Input Program Maximum Airspeed 17

TP 5B Input Program Maximum Airspeed 16

TP 5C Input Program Maximum Airspeed 15

TP 5D Common Common Top Plug Common

TP 5E Input 429 TX Coordination A

TP 5F Input 429 TX Coordination B

TP 5G Output 429 XT Coordination A

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TP Section

Pin I/O Type Description

TP 5H Output 429 XT Coordination B

TP 5J Input Discrete Air/Ground Discrete #2

TP 5K Input Discrete Air/Ground Discrete #1

TP 6A Input 429 FMC #1 / Gen In #2 A

TP 6B Input 429 FMC #1 / Gen In #2 B

TP 6C Output Discrete Reserved

TP 6D Input Discrete GPS Time Mark 2A

TP 6E Input Discrete GPS Time Mark 2B

TP 6F Input Discrete Reserved

TP 6G Input Discrete

Reserved (-0101/-0301); FAA - L_Sense

Activate (-0201)

TP 6H N/A N/A No Connect

TP 6J N/A N/A No Connect

TP 6K Input Program Antenna Program

TP 7A Input 429 Control Data 'A' or FCC #1/MCP #1/VHF #1 A

TP 7B Input 429 Control Data 'A' or FCC #1/MCP #1/VHF #1 B

TP 7C N/A N/A No Connect

TP 7D Input Discrete Control Data Port Select

TP 7E Input 429 Control Data 'B' A

TP 7F Input 429 Control Data 'B' B

TP 7G Input Discrete Standby/On Discrete

TP 7H Input 429 ARINC 706/575 Air Data Input Port 1A

TP 7J Input 429 ARINC 706/575 Air Data Input Port 1B

TP 7K N/A N/A No Connect

MP Section

Pin I/O Type Description

MP 1A Input Program Mode S Address A1 (MSB)

MP 1B Input Program Mode S Address A2

MP 1C Input Program Mode S Address A3

MP 1D Input Program Mode S Address A4

MP 1E Input Program Mode S Address A5

MP 1F Input Program Mode S Address A6

MP 1G Input Program Mode S Address A7

MP 1H Input Program Mode S Address A8

MP 1J Input Program Mode S Address A9

MP 1K Input Program Mode S Address A10

MP 2A Input Program Mode S Address A11

MP 2B Input Program Mode S Address A12

MP 2C Input Program Mode S Address A13

MP 2D Input Program Mode S Address A14

MP 2E Input Program Mode S Address A15

MP 2F Input Program Mode S Address A16

MP 2G Input Program Mode S Address A17

MP 2H Input Program Mode S Address A18

MP 2J Input Program Mode S Address A19

MP 2K Input Program Mode S Address A20

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MP Section

Pin I/O Type Description

MP 3A Input Program Mode S Address A21

MP 3B Input Program Mode S Address A22

MP 3C Input Program Mode S Address A23

MP 3D Input Program Mode S Address A24 (LSB)

MP 3E Common Common Common

MP 3F Input 429 Spare 429 Input 1A

MP 3G Input 429 Spare 429 Input 1B

MP 3H Input Discrete Functional Test

MP 3J Output Discrete Out Spare 1

MP 3K Output Discrete Transponder Fail # 1 discrete output

MP 4A Input Discrete Spare In1

MP 4B Input Discrete Spare In2

MP 4C Input 429 FMC/GNSS #2 In #1 A

MP 4D Input 429 FMC/GNSS #2 In #1 B

MP 4E Input Program Strobed Aircraft Category A (MSB)

MP 4F Input Program Strobed Aircraft Category B (LSB)

MP 4G Input Program ADS-B Configuration Parity

MP 4H Input Program Strobed ADS-B Receive Capability

MP 4J Input Discrete Spare In3

MP 4K Input Discrete Spare In4

MP 5A Input 429 ARINC 706/575 Air Data Input Port 2A

MP 5B Input 429 ARINC 706/575 Air Data Input Port 2B

MP 5C N/A N/A No Connect

MP 5D N/A N/A No Connect

MP 5E Output 429 ATSU Out #1 A

MP 5F Output 429 ATSU Out #1 B

MP 5G Input Discrete Extended Squitter Disable

MP 5H Input Discrete Spare In5 (Mode S DL/DLP Program)

MP 5J Input Program Antenna BITE Program

MP 5K Input Discrete Spare In6

MP 6A Input 429 Maintenance Data Input Port A

MP 6B Input 429 Maintenance Data Input Port B

MP 6C Output 429 Maintenance Data Output Port A

MP 6D Output 429 Maintenance Data Output Port B

MP 6E Input Discrete Alternate Air Data Source Select

MP 6F Input Program Altitude Type Select A Discrete Input

MP 6G Input Program Altitude Type Select B Discrete Input

MP 6H Common Common Middle Plug Common

MP 6J N/A N/A No Connect

MP 6K Common Common Common

MP 7A N/A N/A No Connect

MP 7B N/A N/A No Connect

MP 7C N/A N/A No Connect

MP 7D N/A N/A No Connect

MP 7E N/A N/A No Connect

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MP Section

Pin I/O Type Description

MP 7F N/A N/A No Connect

MP 7G N/A N/A No Connect

MP 7H N/A N/A No Connect

MP 7J N/A N/A No Connect

MP 7K Input Discrete Acquisition Squitter Inhibit (Honeywell Defined)

BP Section

Pin I/O Type Description

BP 1 Input Power 115 VAC Primary Power Hot

BP 2 N/A N/A No Connect

BP 3 N/A N/A No Connect

BP 4 N/A N/A No Connect

BP 5 N/A N/A No Connect

BP 6 N/A N/A No Connect

BP 7 Input Power 115 VAC Primary Power Cold

BP 8 Input Ground Signal Ground

BP 9 N/A N/A No Connect

BP 10 N/A N/A No Connect

BP 11 Input Ground Chassis Ground

BP 12 Input/Output Suppression Suppression Pulse

BP 13 Input/Output Suppression Suppression Pulse - Daisy Chaining

Test Connector

Pin Signal Name I/O Type Description

1 SWITCH_ETH Discrete In 1 Switch Ethernet

2 TEST_RESET Out Test Point Test Point

3 GND Power GND

4 UP_HRESET Out Test Point Test Point

5 VID_ENV_TOP_TP Out Test Point Test Point

6 TEST_DG18 Internal Purpose Only

7 ST_GATE Out Test Point Test Point

8 TEST_DG19 Internal Purpose Only

9 TEST_DG20 Internal Purpose Only

10 TEST_DG21 Internal Purpose Only

11 TEST_DG22 Internal Purpose Only

12 ACQ_SQ_INH_EN In Discrete In 1 Acquisition Squitter Inhibit Enable

13 PULSE_GATE Out Test Point Test Point

14 OP_MAINT_1 In Discrete In 1 Maintanance Mode Selection

15 OP_MAINT_0 In Discrete In 1 Maintanance Mode Selection

16 VID_ENV_BOT_TP Out Test Point Test Point

17 FPGA _SIN Internal Purpose Only

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18 FPGA _SOUT Internal Purpose Only

19 DG_INT_PWRFL Out Test Point Test Point

20 SUPP_TP Out Test Point Test Point

21 E2C_SCL_PN In Service I2C

Bus Ctrl/Clk In Service I2C Bus Serial Clock

22 E2C_SDA_PN Bdir Service I2C

Bus Data Service I2C Bus Serial Data

23 WR_UNPROTECT In Service I2C

Bus Ctrl/Clk In Service I2C Bus Control Signal

24 GND_EXT Service I2C

Bus Supply In Service I2C Bus Power Supply Ground

25 5V_EXT In Service I2C

Bus Supply In Power Supply Source for Service I2C Bus

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5 OPERATION

5.1 TRA-100B MODE S TRANSPONDER – MODES OPERATION

The basic XPDR System consists of a transponder, a control unit, two antennas, and installation

hardware. Communications for the control of the remote transponder are by one-way ARINC 429

bus.

If the transponder is part of a TCAS installation, two-way communications by ARINC 429 data bus

are also utilized between the transponder and the TCAS. The transponder will perform normal Air

Traffic Control (ATC) functions whether it is or is not part of the TCAS system; however the TCAS

system cannot function without the transponder. Antenna diversity operation of the transponder is

a requirement for TCAS installations.

The transponder is capable of accepting altitude (air data) information from a variety of optional

sources. These include the ARINC 575 and ARINC 706 Air Data Computers. Furthermore,

selection between a primary and secondary input for each of these sources is provided.

An input and output ARINC 429 Maintenance Interface is provided that conforms to ARINC 604

and OEM specific requirements.

The transponder may also receive ARINC 429 data from a variety of equipment (i.e. Inertial

Reference System (IRS)/Flight Management System (FMS), Data Concentrator, Flight

Management Computer (FMC)/Global Navigation Satellite System (GNSS), FMC Gen, Flight

Control Computer (FCC)/Maintenance Computer Program (MCP), Control Head, and Air Data

System (ADS)).

This data will be utilized to populate:

 Flight Identification required for Elementary Surveillance

 Downlink Aircraft Parameters required for Enhanced Surveillance

 ADS-B Extended Squitters.

The XPDR performs its intended function and not create a hazard to users of the National

Airspace System (NAS).

The Transponder TRA-100B is a avionics equipment capable to provide the Mode S Transponder

function required by Technical Standard Order (ETSO-C112d/TSO-C112e).

It also provides Extended Squitter ADS-B Out function required by ETSO-C166b/TSO-C166b.

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The TRA-100B is designed to be a Level 2 transponder.

For Level 1 includes the following capabilities:

 Mode A identity and Mode C pressure-altitude reporting,

 Air Traffic Control Radar Beacon System (ATCRBS)/Mode-S and Mode S all-call

transactions,

 Addressed surveillance altitude and identity transaction,

 Lockout protocols,

 Basic data protocols except data link capability reporting, and

 Air-to-air service and squitter transactions.

For Level 2 includes the following capabilities:

 Bi-directional air-to-air information exchange

 Ground-to-air data uplink, Comm-A

 Air-to-ground data downlink, Comm-B

 Multisite message protocol

 Data link capability reporting

 Aircraft identification reporting

 Traffic Alert and Collision Avoidance System (TCAS)/Airborne Collision Avoidance System

(ACAS) crosslink capability

Furthermore the TRA-100B contains the following optional additional features (associated ID code

for transponder marking):

 TCAS Compatibility (a)

 Antenna Diversity (d)

 Extended Squitter (e)

 Enhanced Surveillance (including Elementary Surveillance) (n)

 Surveillance Identifier Code (s)

Among the above characteristics, the Transponder TRA-100B:

 exceeds the minimum output power level of 125 watts required by Class 1 equipment as

defined in RTCA/DO-181E. Therefore, the XPDR transponder marking for TSO-C112e is

Level 2adens, Class 1.

 exceeds the minimum output power level of 125 watts required by Class A1 transmit only

equipment as defined in RTCA/DO-260B. Therefore, the XPDR transponder marking for

TSO-C166b is Class A1 transmit only.

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5.1.1 ATCRBS System Operation

The ATCRBS system can be defined as “a secondary surveillance radar system developed for use

within the air traffic control system for more precise position reporting of planes. It is used in

conjunction with the primary radar, which is used to determine the presence of planes in the

airspace. ATCRBS supplements this positional information with positive identification and altitude

information allowing controllers to track each plane more precisely and efficiently .”1

In this scenario the ATC ground based interrogator transmits an interrogation by means of

sequence of pulses at a frequency of 1030 MHz and call all transponders for a response on the

mode being used to reply. The received replies will be displayed on the ATC radar screen.

Analog to the ground based interrogator, an airborne TCAS device may transmits interrogation for

airborne traffic. TCAS can detects direction and altitude of an aircraft equipped with a transponder.

Figure 5-1 – ATCRBS System

1"The Story of Mode S: An Air Traffic Control Data-Link Technology" (Emily Chang, Roger Hu,

Danny Lai, Richard Li, Quincy Scott, Tina Tyan)

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5.1.2 ATCRBS Transmission Overview

The Air Traffic Control Radar Beacon System (ATCRBS) interrogates aircraft with either Mode A

or Mode C. The Mode A interrogation requests the aircraft identification code. The Mode C

interrogation requests the aircraft altitude. Any aircraft in the beam of the radar replies.

In order to prevent an undesired reply from an aircraft which are not in the main beam the Side

Lobe Suppression (SLS) technique is used.

Looking at the radius antenna diagram, leaking signals (called side lobes), can be identified as

interrogation by aircrafts which are not the desired targets.

The interrogation represented in Figure 5-2 would has multiplies replies from Target 1, 2 and 3.

The interrogation represented in Figure 5-3 will receive a reply from Target 1 according to the

following diagram:

9 dB

0 dB

P1 P2 P3

TRANSPONDER REPLIES

TRANSPONDER MAY

SUPPRESS OR REPLY

TRANSPONDER SUPPRESSES

SLS can also be used to avoid the reflection effects.

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DIRECTIONAL

Figure 5-2 – ATCRBS Interrogation without Side Lobe Suppression (SLS)

DIRECTIONAL

OMNIDIRECTIONAL

Figure 5-3 – ATCRBS Interrogation with Side Lobe Suppression

Target 1

Target 2

Target 3

Target 1

Target 2

Target 3

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5.1.3 OVERVIEW OF MODE S

Mode Select (Mode S) is a combined secondary surveillance radar beacon system with ground-

air-ground and air-air data link capability.

It includes a 24-bit aircraft technical address which provides more than 16 million unique

addresses, allowing the interrogator to select then interrogate a specific aircraft of interest.

Each discrete interrogation contains the unique address of the aircraft for which it is intended and

elicits a response dependent upon the level of capability of the corresponding transponder.

Civil aircraft have a permanently assigned technical address.

Implementation of a Mode S interrogation capability improve the existing systems in the following

ways:

 Aircraft state (heading, speed, etc.) and aircraft intent information is available via Mode S

selective interrogations.

 Adaptive re-interrogation will significantly improve the probability of detecting an aircraft

that is in a marginal signal condition.

 The Mode S signal structure will provide improved error detection and correction.

 More than sixteen million transponder addresses will allow unique identification of all

aircraft.

 Refined range and position accuracy is made possible via Mode S GPS squitter and/or

Mode S datalink.

5.1.3.1 Signal Characteristics

Mode S is fully backwards compatible with the existing Air Traffic Control Radar Beacon System

(ATCRBS).

Mode S transponders respond to Mode S interrogations.

Mode S interrogators can interrogate ATCRBS or Mode S transponders.

Both systems use the same interrogation and reply frequencies (1030 MHz and 1090 MHz,

respectively).

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Mode S-only interrogations use binary differential phase shift keying modulation (DPSK) at 4

MB/sec and Mode S replies have binary pulse position modulation (PPM) at 1 MB/sec.

The Mode S coding structure provides enhanced error detection and correction (less than 1

undetected error in 108 messages). Mode S is not secure or jam-resistant and is not intended to

replace the encrypted military Mode 4.

Mode S has two basic message lengths: 56 bits and 112 bits.

The 56 bit surveillance formats include a 32 bit command field and a 24 bit address field.

The 112 bits communication formats include a 32 bit command field, a 56 bit data field and a 24 bit

address field.

The 112 bit extended length message formats include an 8 bit command field, an 80 bit data field

and a 24 bit address field.

5.1.3.2 Interrogation Process

Fully operational Mode S interrogators or clusters of interrogators are allocated on interrogator

identification (II) code which, in conjunction with the unique aircraft technical address, enables

linking between the interrogator and the aircraft of interest.

All-call interrogations are sent to all aircraft in a region to obtain the corresponding 24-bit technical

addresses. These addresses are maintained in an internal database and, once the address is

obtained, the all-call acquisition doesn’t need to be repeated for that aircraft.

Upon receiving the technical address, the interrogator sends a lockout message to inhibit the

corresponding transponder form replying to further Mode S all-call interrogations from any sensor

with that interrogator identification code. Lockout is refreshed each antenna scan as part of the

normal surveillance protocol and time-out occurs in 18 seconds if no further lockout commands are

received. The interrogator also has the provision (lockout override”) to command a transponder to

respond regardless of the lockout status effect.

Once it has the unique transponder address, the interrogator can selectively interrogate to obtain

altitude and Mode 3/A codes for Mode S to Mark XII correlation or other useful information.

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P1 P3 P4

0.8 S0.8

S*

S

Interro

g

ation

Mode A 8.0 S

Mode C 21.0 S2.0 S

* Mode A/C/S all-call: 1.6 S

Mode A/C-only all-call: 0.8 S

P1 P2

0.8 S

SLS Control

Transmission

2.0 S

Figure 5-4 – Intermode (Mode A/C and S) Interrogation Pulse Sequence

P1 P2Interro

g

ation

2.0 S

P3

0.8 S

SLS Control

Transmission

0.4 S

2..75 S

First chi

p

Last chip

P6

1.25 S

0.25 S

0.5 S

Guard interval

0.5



S

y

nc

p

hase reversal

Figure 5-5 – Mode S Interrogation Pulse Sequence

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The mode S reply consist of a long train of 0.5 s and 1.0 s pulses lasting for up to 130 s. It is

possible that such a train of pulses would give rise to multiple SSR bracket detections which could

overload the plot extractor and effect its proper operation. It is advisable that an SSR plot extractor

design should anticipate the introduction of Mode S and include circuitry to provide protection

against Mode S replies.

In order to detect a Mode S reply it is only necessary to detect the four Mode S preamble pulses.

These pulses are detected as follows:

 a second pulse leading edge occurs 7-9 clock periods after detection of the first pulse

leading edge;

 a third pulse leading edge occurs 28-30 clock periods after detection of the first pulse

leading edge;

 a fourth pulse leading edge occurs 36-38 clock periods after detection of the first pulse

leading edge.

The detection of a Mode S preamble should suppress bracket detection for a period of 120 s

(994 clock periods). After preamble detection the train of pulse leading edges should be monitored

for a gap of at least 22 clock periods. Such a gap would exceed that which is possible in a Mode S

reply and would indicate that the preamble had been spurious, possibly owing to chance

overlapping fruit replies. If a gap of that size is detected, the bracket detection suppression should

be released so that SSR reply processing can resume.

Bit 1 Bit 2 Bit 3 Bit 4

1 0 1 0 1 0 1 0

8.0

9.0

1 0 1 0

Bit

N

-

1

Bit N

0.0 0.5 1.0 3.5 4.5

Time (S)

Preamble

8.0



S

Data block

56 or 112 S

0000011

E

xample. – Reply data block

corresponding to bit

s

e

q

uence 0010…….001

Figure 5-6 – Mode S Reply

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6 INSTALLATION

6.1 TRA-100B MODE S TRANSPONDER – REPLACE PROCEDURES

Standard Equipment

Description Identification Nr. Qty

None

Materials

Description Identification Nr. Qty

None

Spares

Description Identification Nr. Qty

TRA-100B Mode S Transponder TAC-6001/03 1

Safety Precautions

WARNING

MAKE SURE THAT THE EQUIPMENT IS DISCONNECTED FROM ALL

ELECTRICAL POWER SOURCES BEFORE YOU DO ANY

MAINTENANCE WORK.

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Preliminary Operations

1. Make sure the platform is safe for maintenance

Procedure

 Removal Procedure

1. Loosen by hand the two hold-down screws on the front of Mounting Tray (1)

2. Pull the Transceiver by the handle

3. Carefully slide the Transponder from the Mounting Tray

 Install Procedure

1. Carefully put the TRA-100 B Modes S Transponder into the Mounting Tray, aligning the

TRA-100B connector guide pins with the platform connector.

2. Tighten by hand the two hold-down screws (1) on the front of Mounting Tray

Figure 6-1 – TRA-100B Mode S Transponder - Replace Procedures

Close up

1. Removal all the tools, the materials and the equipment from your work area.

1

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7 FAULT ISOLATION

7.1 GENERAL

Fault Location procedure allows the maintainer to isolate the failure the source of a failure at the

system level or aircraft wiring level. Furthermore the fault location can be performed even on the

Transponder itself in order to identify the failed module.

The TRA-100B Transponder provides a Built-In-Test function strictly for the purpose of

annunciation to the crew of a faulty Transponder system and for the purpose of providing

maintenance information for the repair function.

The TRA-100B provides several Input/Output interfaces for Built-In-Test capability necessary to

perform a diagnostic process to isolate the failure and provide the information related to its

location.

7.2 FAILURE DATA STRUCTURE

The diagnostic results are stored in a NVM in accordance with the following data::

a) One Hundred (100) Flight legs of storage.

b) Ten (10) subassembly and external faults per flight segment.

c) Three (3) subassembly faults for ground tests.

d) Two Hundred Thirty (230) bytes of storage per Current Flight leg and One Hundred Sixty

Seven (167) bytes for each other Flight leg segment.

7.2.1 Flight Information Header

For each flight leg, currently available flight information is stored in a fixed header.

The flight leg is incremented upon reception from the CFDS of a command label with code of 2,

which occurs during the aircraft take-off.

From one take-off point to the next, faults is stored for the 'current' flight leg.

The flight information header records all the data received on the maintenance port for each flight

leg with the exception of GMT, and flight phase as per the following table:

The flight information header records all the data received on the maintenance port for each flight

leg with the exception of GMT, and flight phase as per the following table:

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The flight information header records all the data received on the maintenance port for each flight

leg with the exception of GMT, and flight phase as per the following table:

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7.2.2 Fault Record format

Each fault record contains the time, flight phase, failure code, number of occurrences (up to 4) of

the failure.

The Ground fault records contains the first three faults recorded.

The failure codes are organized as follows:

 Log of internal faults

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Table 7-1 – TRA-100B – Internal Faults

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 Log of external faults

Table 7-2 – TRA-100B – External Faults

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7.3 FAILURE LOCATION ON AIRCRAFT

The Fault Location procedure permits to find out the origin of a undesired symptoms.

LED on the front panel of the TRA-100B transponder illuminate when TRA-100B system failures

are detected (Figure 7-3).

The TRA-100B transponder's Built-In-Test equipment (BITE) continually monitors the equipment

(both internal and external sources) and if a failure is detected will cause the transponder lamp.

System failure indications displayed on the front of the transponder are detected during

Functional-Self-Test. The Functional-Self-Test is manually initiated from the TEST pushbutton on

the front of the transponder.

Some of the transponder faults, are indicated with red LED's on the transponder front panel. The

following is a list of the transponder fault LED's.

During Power-Up the XPNDR red LED is set and remain set until the equipment is initialized (i.e.

Software and Firmware started up).

The XPNDR red LED is set while the failure discrete output pins are in the active state.

The XPNDR green LED is set to indicate that the equipment is initialized (i.e., Software and

Firmware started up) and the failure discrete output pins are not in the active state.

The front panel LED's provide a real time report of the validity of the Transponder internally and

the external interfaces.

The LED's are activated by the Test Push-button. The tests for the "on-ground" condition are

performed at the time of the activation of the test push-button.

The data from this self-test and the data from the latest passive test sequence is then displayed by

the LED's in the following manner:

 Within 1 second from the time the push-button is activated, NOGO (RED) and external

interfaces LED's is turned on for 3 seconds.

 NOGO (RED) and external interfaces LED's then go off for 3 seconds.

 The appropriate LED then is set on and stays lit until the push-button is released.

 The appropriate LED above is green for the Transponder, if no internal faults are identified,

and red for the Transponder, if any internal fault is identified.

The test cycle that is initiated by the push-button re-runs after the 3 second, 3 second, 3 second

sequence described above is completed, if the push-button is still active.

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However, the LEDs remains in their status annunciation state, and will change in response to any

new array of fault data picked up by the latest test cycle.

7.3.1 ON A/C Troubleshooting procedure

TRA-100B failure indication and associated corrective action procedures are described in Table

7-3

Table 7-3 – TRA-100B – Malfunction Symptoms

Ref. Symptoms Prioritized Corrective Action

1. Primary power is not present on bus

input to the transponder.

1. Check/repair aircraft primary power source

and associated aircraft wiring.

2. Check/replace any external relays that

may be present in the primary power input

lines to transponder.

2. Platform primary power circuit

breaker not remain closed.

1. Check/repair short circuit in aircraft wiring

or system equipment.

3. Fail lamp remains lit on transponder

related control unit.

1. Follow procedure to Ref. 18 if TRA-100B

transponder is selected on control unit or

replace ATCRBS transponder if ATCRBS

transponder is selected from control unit.

4. ATC 1 or ATC 2 annunciation does

not appear on control unit display

window when transponder #1 (ATC

1) is selected from control unit.

1. Replace control unit.

5. Without having pressed the TEST

pushbutton on the front panel of the

TRA-100B, XPNDR red LED failure

indication is lit on the front of

transponder (i.e. red lamp

illuminated on TRA-100B).

1. Replace transponder if a TRA-100B

transponder is being checked. If failure

indication appears on an ATCRBS

transponder please refers to appropriate

maintenance manual

6. When TEST pushbutton on front

panel of transponder is pressed to

initiate functional test, all the lamps

on front of the TRA-100B

transponder do not light for

approximately three seconds and

then extinguish (or, if applicable,

proper initial functional test

1. Replace transponder if a TRA-100B

transponder is being checked. If failure

indication appears on an ATCRBS

transponder please refers to appropriate

maintenance manual

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Ref. Symptoms Prioritized Corrective Action

indications are not present on an

ATCRBS transponder).

7. Approximately six seconds after the

TEST pushbutton on the front of the

transponder is pressed and held, a

transponder "good" indication is not

present on the transponder or a "fail"

indication is present. For the TRA-

100B, Transponder "good" is

indicated by a LED (green) XPNDR

and a "fail" condition is indicated by

a LED (red) XPNDR.

1. Follow procedure to Ref. 18 if TRA-100B

transponder is selected on control unit or

replace ATCRBS transponder if ATCRBS

transponder is selected from control unit

8. XPNDR Green LED on front of TRA-

100B transponder remains

permanently lit after TEST

pushbutton on transponder has been

released (or, if applicable, a similar

faulty indication appears on an

ATCRBS transponder).

1. Replace transponder if a TRA-100B

transponder is being checked. If failure

indication appears on an ATCRBS

transponder please refers to appropriate

maintenance manual

9. When TEST procedure is initiated

from the control unit, the ATC FAIL

lamp on the control unit itself does

not light for first three seconds or

remains lit.

1. Press and hold TEST pushbutton on front

of transponder selected on the control unit.

Check for fail indication on front of

transponder.

If a lit red fail LED is present on a

TRA-100B transponder follow the procedure

to Ref. 18. If failure indication appears on an

ATCRBS transponder please refers to

appropriate maintenance manual.

2. Replace the control unit.

3. Check/repair Functional Test signal wiring

between the control unit and the transponder.

10. Control unit's ATC IDENT CODE

display window does not indicate

8888 during TEST mode initiated

from control unit.

1. Replace control unit.

11. ATC Code Select switches/controls

on the control unit do not properly

control the ATC Code display on the

control unit.

1. Replace control unit.

12. Mode C ramp tests: proper altitude 1. Follow procedure to Ref. 18 if TRA-100B

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Ref. Symptoms Prioritized Corrective Action

reports are not displayed on ramp

tester.

transponder is selected on control unit or

replace ATCRBS transponder if ATCRBS

transponder is selected from control unit

2. Check/replace altitude source.

3. Check ramp tester.

13. Mode C ramp tests: the ramp tester

indicates that the transponder's

transmit frequency is not within 1090

MHz ± 1 MHz.

Same as Ref. 12

14. Mode A ramp tests: proper ATC

Code is not displayed on ramp

tester.

Same as Ref. 12

15. Mode A ramp tests: the ramp tester

indicates that the transponder

transmit frequency is not within 1090

MHz ± 1 MHz.

Same as Ref. 12

16. An altitude report display is visible

on ramp tester when the appropriate

control unit switch is set to inhibit

altitude reporting during ramp

testing.

1. Replace control unit.

2. Replace transponder.

3. Check/repair the Altitude Reporting

ON/OFF signal wiring between the control

unit and transponder.

17. a Special Position Identifion (SPI)

pulse indication is not visible on

ramp tester when the ATC IDENT

switch is pressed during ramp

testing.

1. Replace control unit.

2. Replace transponder.

3. Check/repair the IDENT signal wiring

between the control unit and transponder

18. On front panel of TRA-100B

transponder, press and hold the

TEST pushbutton while observing

indicators on front of transponder:

One or more of the red XPNDR,

ALT, DATA IN, TOP, BOT, TCAS,

MAINTENANCE, GPS or

RESERVED LED remain lit.

FAULT LED FAILURE

XPDR green (No other lights on): System

good

XPDR red: XPNDR is defective

ALT: ADC source is defective

DATA IN: Check ATC control unit/wiring

TOP: Top ATC ant/coax is "OPEN"

BOT: Bottom ATC ant/coax is "OPEN"

GPS: GPS source is defective

TCAS: Check TCAS processor/wiring

MAINT Check input from CFDS, if used

RESERVED Not Active

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7.3.2 NVM Download procedure

In addition to the above procedures, maintainer can download the NVM contents in order to verify

the status of fault code as per Table 7-1 and Table 7-2.

Following procedure describes step by step actions to be performed in order to download NVM

fault log data from TRA-100B Mode S Transponder.

The procedure is tailored to TechSat Net Loader tool but can be easily translated to any other

A615A compliant tool.

The main goal is to send one of the attached files (HNR-XPDR_1.LNR or HNR-XPDR_1.LNR

depending on XPDR side installation) in order to command the Transponder to download the NVM

fault log data.

7.3.2.1 Techsat Net Loader procedure:

1) Change the PC’s IP Address and Subnet mask (remember current setting).

Control Panel -> Network and Internet -> Network Connections then change Local Area

Connection Properties of the Internet Protocol Version 4 (TCP/IPv4 Properties) to:

 IP Address = 10.129.0.1 (for side 1, 10.128.0.1 for side 2)

 Subnet mask = 255.255.255.0

2) Standard Ethernet cable connected from PC to the TRA-100B Ethernet port.

3) Maintenance Key plugged into the maintenance port. Note this will tie the Maintenance

Port pins 1, 14 & 15 to Pin 3 (GND).

4) The unit must be configured to be on-ground by grounding TP5K & TP5J.

Note: steps 5-9 can be skipped if the tool has been previously installed

5) Install MediaCreator PartMaker and NetLoader software (see how to install them)

6) The default working directory is : C:\Users\ UserName\DEVSTATION-DATA

(%HOME%/DEVSTATION-DATA)

a. Copy attached files HNR-XPDR_1.LNR and HNR-XPDR_2.LNR in:

%HOME%/DEVSTATION-DATA/loader/download_files

7) Start NetLoader and press “OK” button in Error window

8) Click “Edit Configuration” button

a. Set subnetmask = 255.255.255.0

b. Set ip = 10.129.0.1

c. Set a615a_version = 3

d. Press Commit and then Close

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9) Press “Shutdown” button

10) Start NetLoader and press “OK” button in Error window

11) Press “Download Media defined” button, following window will appear

12) Click on HNR-XPDR_1.LNR file for side 1 XPDR, HNR-XPDR_2.LNR for side 2 XPDR and

then press “Open” button.

13) If the XPDR is correctly found by the loader the following mask will appear (side 1

example)

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14) Select the HNR-XPDR THW_ID row and press “Download” button.

15) NVM download process will start automatically and if successfully the following window will

appear. Binary file “READ_NVM” with NVM fault log content will be stored in

%HOME%/DEVSTATION-DATA/loader/download_files folder.

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16) Press “Close” button

17) Press “Shutdown” button

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7.3.3 NVM Data

The Table 7-1 – TRA-100B – Internal Faults provides fault log for internal faults and consequently

for off aircraft info, the Table 7-2 – TRA-100B – External Faults provides fault log for failures

detected on external sources. In case of failure indication provided on this area, the first step is

verify the connections between the TRA-100B and related external equipment.

The following table (Table 7-4) reports the troubleshooting procedure to perform against each fault

log.

Table 7-4 - External Faults Maintenance Procedure

Fault

Code

Failed Interface Failure Symptom Maintenance action

F0H Maintenance No Maintenance Data Verify connection with

CFDS if used

F1H 24 bit discrete Address Intermittent Mode S

address

Verify the connection with

Address bus

F2H TCAS TCAS Periodic Data

Failure

Verify connection with

TCAS

F3H Power

Interruption>10MSEC

Power Supply Interruption Verify connection with

primary power from

platform

F4H Altitude – 706 (L203) Altitude 706 Air Data

Failure

Verify connection with

ADC source

F5H Altitude – 575 (L203) Altitude 575 Air Data

Failure

Verify connection with

ADC source

F6H Altitude – 706 (all labels) 706 Air Data Failure Verify connection with

ADC source

F7H FMC/GNSS#2 FMC/GNSS#2 Failure Verify connection with

FMC/GNSS#2

F8H FMC/GNSS#1#2 FMC/GNSS#1#2 Failure Verify connection with

FMC/GNSS#2

F9H IRS/FMS IRS/FMS Failure Verify connection with

IRS/FMS

FAH FMC/GNSS#1 FMC/GNSS#1 Failure Verify connection with

FMC/GNSS#1

FBH FMC GEN FMC GEN Failure Verify connection with

FMC

FCH Altitude – 575 (all labels) 575 Air Data Failure Verify connection with

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Fault

Code

Failed Interface Failure Symptom Maintenance action

ADC source

FDH FCC/MCP FCC/MCP Failure Verify connection with

FCC/MCP

FEH Landing Gear Input Landing Gear Failure Verify the connection with

platform

FFH ADS-B Configuration

Pins

ADS-B Parity Failure Verify connection with

platform

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7.4 FAILURE LOCATION OFF AIRCRAFT

7.4.1 STTE Description

As mentioned above the TRA-100B Built-In-Test is capable to perform internal diagnostic and

provide results to the STTE.

The TRA-100B STTE is designed to perform troubleshooting procedure and provides after the

fault isolation the step by step procedure to restore the Transponder in its operating condition.

The TRA-100B STTE is composed as follows

Table 7-5 – TRA-100B STTE Composition

Pos. Item P/N

1 Double Rack 37U 600x800 HPI-1358/01.01

2 Lab Equipment _ (9 KHz - 6 GHZ) 9401151M0019

3 PXI INTERFACE TAD-5055/01.01

4 UUT FRONT PANEL FIXTURE TAG-5486/01.01

5 ANTENNA INTERFACE - MOUNTING TAD-5056/01.01

6 Rack Guide ACCIAIO TELESCOPICA 8100485M0437

7 For Cabinets ACCIAIO 8100081M0419

8 Lab Equipment _ (IFF SIMULATOR) 9401131M0014

9 Lab Equipment _ (AC SOURCE/A 9401163M0015

10 DIGITAL SCOPE TAG-5497/01.01

11 Monitor _ (17" LCD DISPLAY - 9401149M0014

12 PC Periph or Assembly _ (RAC 9401140M0013

13 Ethernet Switch (16 PORT FAS 9300164M0018

14 WORKSTATION 2U RACK HPI-1400/01.01

15 CAVO ICON ITA-ICON ITA L300mm TAN-5358/01.01

16 RF Cable SUCOFLEX 104 PTFE _m 1301783M0015

17 CAVO BNC 90-BNC 90 L2600mm TAN-5361/01.01

18 CAVO BNC 90-BNC 90 L1500mm TAN-5362/01.01

19 CAVO HI-PWR PER ATE MST-TRA TAN-5368/01.01

20 CABLE 37P BREAKOUT PXI - ANTE TAN-5380/01.01

21 TARGHETTA RACK TAK-7180/01.01

22 Cable AWG28 PVC _m**2 _ _ (C 1301273M0012

23 Cable 26/28AWG LSZH _m**2 COP 1301688M0011

26 TRA-100B_MPC STTE Software TIU-0077/01.01

Figure 7-1 and Figure 7-2 show the STTE composition

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Figure 7-1 – TRA-100B STTE (Front and right views)

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Figure 7-2 – TRA-100B STTE (Rear and left views)

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7.4.2 OFF A/C Troubleshooting procedure

The OFF A/C troubleshooting procedure is performed in the Repair Station in order to identify or

confirm the failure of received equipment.

It starts with a visual inspection of the Transponder to verify eventual damage that can be occurred

during the handling, packaging and/or transportation.

In case of damage the maintainer has to verify if it is reported on the Failure Report supplied with

the Equipment. In case of missing information the maintainer shall record the damage updating the

Failure Report.

Therefore the equipment shall be connected to the STTE (see Figure 7-1) and shall verify the data

reported in the NVM (see Figure 7-7).

The STTE provides the necessary supplies, command and control signals and maintenance

interface.

The first information on the Transponder health status is provided by the Front Panel. The TRA-

100B is equipped with a set of LED which provide the status of the Transponder itself and the

status of the Transponder interfaces.

Figure 7-3 – TRA-100B - Front Panel LED

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As showed in Figure 7-3 the following LED are present on the Front Panel with the following

meaning:

Table 7-6 – TRA-100B - Front Panel LED indicators

CONTROL / INDICATOR DESCRIPTION FUNCTION

XPNDR Green Transponder GO. The Transponder is

correctly operating.

XPNDR Red Transponder NOGO. The Transponder is not

operating.

ALT Green/Red This LED provides the status of external

Altitude data. Color green the data are

correct

DATA IN Green/Red This LED provides the status of external

Control data. Color green the data are correct

GPS Green/Red This LED provides the status of external GPS

data. Color green the data are correct

ANT TOP Green/Red This LED provides the status of external

Antenna Top status. Color green the Antenna

Top is correctly operating.

ANT BOT Green/Red This LED provides the status of external

Antenna Bot status. Color green the Antenna

Bot is correctly operating.

TCAS Green/Red This LED provides the status of external

TCAS data. Color green the data are correct

MAINT Green/Red This LED provides the status of Maintenance

interface. Color green the data are correct

RESERVED N/A

During Power-Up the NOGO (RED) LED is set and remain set until the equipment is initialized (i.e.

Software and Firmware started up).

The NOGO (RED) LED is set while the failure discrete output pins are in the active state.

The GO (GREEN) LED is set to indicate that the equipment is initialized (i.e., Software and

Firmware started up) and the failure discrete output pins are not in the active state.

The front panel LED's provide a real time report of the validity of the Transponder internally and

the external interfaces.

The LED's are activated by the Test Push-button. The tests for the "on-ground" condition are

performed at the time of the activation of the test push-button.

The data from this self-test and the data from the latest passive test sequence is then displayed by

the LED's in the following manner:

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 Within 1 second from the time the push-button is activated, NOGO (RED) and external

interfaces LED's is turned on for 3 seconds.

 NOGO (RED) and external interfaces LED's then go off for 3 seconds.

 The appropriate LED then is set on and stays lit until the push-button is released.

 The appropriate LED above is green for the Transponder, if no internal faults are identified,

and red for the Transponder, if any internal fault is identified.

The test cycle that is initiated by the push-button re-runs after the 3 second, 3 second, 3 second

sequence described above is completed, if the push-button is still active.

However, the LEDs remains in their status annunciation state, and will change in response to any

new array of fault data picked up by the latest test cycle.

7.4.3 Connection procedure

The procedure to connect the TRA-100B to the STTE is following reported (ref. Figure 7-1):

1. Install the TRA-100B into the mounting tray (pos. 6 and 7) and push it until the rear

connectors are mated.

2. Securing the TRA-100B to the mounting tray using the two hold down screws

3. Connect the Ethernet connector

4. Connect the Test connector.

7.4.4 Fault Finding

The TRA-100B stores the failures occurred during the operation in the NVM. Nevertheless if a

failure arise in a section of DPIO the Transponder is not operative and the NVM content cannot be

read.

The procedure to perform the fault finding on TRA-100B is following reported:

1. Verify the status of the front panel LED.

2. If the red LED “NO GO” is on the DPIO SRU is failed but no data cannot be written in the

NVM.

Therefore follows the procedure for DPIO Removal (Ref. 8.4.1).

3. If the green LED “GO” is on, the TRA-100B is able to perform the auto test phase.

After 30 sec. the results of test will be reported in the “NVM Maintenance Interface” box (see

Figure 7-7)

4. The data are organized as follows:

a. Current Flight Information data pack: This field contains data related to flight

information such as departure location (From), arrival location (to), flight number

(Flight Nr.), aircraft identification (Aircraft Id.) and date (Date)

b. Failure Localization data pack (flight): This field contains data related Failure code

as per plus time of occurrence (GMT), Flight Phase, Error Repetition Counter (Fail

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Rep), Check Sum, Temperatures info (Temp 1XX, Temp 2XX, Temp 3XX), ETI

Counter (ETI High, ETI Low).

5. After the completion of test cycle, the operator shall select “Diagnostic Procedure” from

Tool Menu (Figure 7-8)

6. The Diagnostic Procedure screen (Figure 7-9) shows the Fail Code information together

with Module affected and Fail Description. The last column of section “Page” reports the

CMM number of page where the maintenance procedure to be performed in order to

restore the Transponder is recalled.

7. Clicking on the number of page reported in this column, the “Maintenance” section of this

manual will be opened showing the maintenance task to be performed to replace the failed

module.

7.4.5 Checkout procedure

In order to verify if the maintenance procedure restored the TRA-100B to its operating conditions,

a checkout procedure has to be performed.

This checkout consist mainly in running the ATP procedure as described following:

7.4.5.1 Check of lightning protection devices presence

The testing in this section consists of applying an AC voltage through a current-limit resistor to the

UUT rear connector discrete pins.

The voltage level has been selected to provide enough current to activate the transzorbs. With this

AC voltage applied, the Minimum and Maximum DC voltage levels on discrete output pins are

measured to ensure that the transzorbs perform voltage clamping at the device rated values.

Care is taken to apply the AC voltage for less than 15 seconds in order to prevent damage to the

discrete output circuit in case of a transzorb failure.

The following table defines the series resistor value, the external AC voltage to be used for each

single pin and the expected clamping voltage to be verified.

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Table 7-7 – TRA-100B - Transzorb Test Parameters

Pin I/O Type Description Series

Resistor 1% AC Voltage Clamping Voltage

TP 1A Input Program AC Length/Width A MSB 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 1B Input Program

Strobed AC Length/Width B 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 1C Input Program

Strobed AC Length/Width C LSB 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 1D Input Program

Strobed GPS Ant Long Off A (MSB) 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 1E Input Program

Strobed GPS Ant Long Off B 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 1F Input Program

Strobed GPS Ant Long Off C (LSB) 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 1G Input Program

Strobed

Navigation Accuracy Category

Velocity (NACV)

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 1H Input Program

Strobed

System Design Assurance

(SDA)

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 1J Input Differential GPS Time Mark 1A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 24.4 V

TP 1K Input Differential GPS Time Mark 1B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 24.4 V

TP 2A Input 429 FMC/GNSS #1 In #1 A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 2B Input 429 FMC/GNSS #1 In #1 B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 2C Input 429 IRS/FMS/Data Conc. A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 2D Input 429 IRS/FMS/Data Conc. B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 2E Output 429 Spare Out 1A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 2F Output 429 Spare Out 1B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 2G Input 429 ATSU In A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 2H Input 429 ATSU In B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 2J Input Discrete Data Load Enable 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 2K Input Program ADS-B FAIL Disable 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 3A Output Discrete ADS-B FAIL Disc Out 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 3B Output Discrete Transponder Fail Disc #2

Output

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 3C Input Program Cable Delay Program Top/Bot 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 3D Input Program Cable Delay Program Value

#1

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 3E Input Program Cable Delay Program Value

#2

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 3G Input Discrete SDI 429 Bus Address Logic

Input

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 3H Input Discrete SDI 429 Bus Address Logic 4.75KΩ 80±0.5VAC, ± 72.7 V

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Pin I/O Type Description Series

Resistor 1% AC Voltage Clamping Voltage

Input 1/2W 50±0.5Hz

TP 5A Input Program Maximum Airspeed 17 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 5B Input Program Maximum Airspeed 16 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 5C Input Program Maximum Airspeed 15 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 5E Input 429 TX Coordination A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 5F Input 429 TX Coordination B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 5G Output 429 XT Coordination A 4.75KΩ

1/2W

50±0.5VAC,

50±0.5Hz ± 11.2 V

TP 5H Output 429 XT Coordination B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 5J Input Discrete Air/Ground Discrete #2 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 5K Input Discrete Air/Ground Discrete #1 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 6A Input 429 FMC #1 / Gen In #2 A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 6B Input 429 FMC #1 / Gen In #2 B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 6D Input Discrete GPS Time Mark 2A 4.75KΩ

1/2W

40±0.5VAC,

50±0.5Hz ± 24.4 V

TP 6E Input Discrete GPS Time Mark 2B 4.75KΩ

1/2W

40±0.5VAC,

50±0.5Hz ± 24.4 V

TP 6F Input Discrete Reserved 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 6G Input Discrete Reserved (-0101/-0301); FAA

- L_Sense Activate (-0201)

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 6K Input Program Antenna Program 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 7A Input 429 Control Data 'A' or FCC

#1/MCP #1/VHF #1 A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 7B Input 429 Control Data 'A' or FCC

#1/MCP #1/VHF #1 B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 7D Input Discrete Control Data Port Select 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 7E Input 429 Control Data 'B' A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 7F Input 429 Control Data 'B' B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 7G Input Discrete Standby/On Discrete 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

TP 7H Input 429 ARINC 706/575 Air Data Input

Port 1A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

TP 7J Input 429 ARINC 706/575 Air Data Input

Port 1B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP 1A Input Program Mode S Address A1 (MSB) 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 1B Input Program Mode S Address A2 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 1C Input Program Mode S Address A3 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 1D Input Program Mode S Address A4 4.75KΩ 80±0.5VAC, ± 72.7 V

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Pin I/O Type Description Series

Resistor 1% AC Voltage Clamping Voltage

1/2W 50±0.5Hz

MP 1E Input Program Mode S Address A5 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 1F Input Program Mode S Address A6 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP

1G Input Program Mode S Address A7 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 1H Input Program Mode S Address A8 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 1J Input Program Mode S Address A9 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 1K Input Program Mode S Address A10 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 2A Input Program Mode S Address A11 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 2B Input Program Mode S Address A12 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 2C Input Program Mode S Address A13 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 2D Input Program Mode S Address A14 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 2E Input Program Mode S Address A15 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 2F Input Program Mode S Address A16 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP

2G Input Program Mode S Address A17 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 2H Input Program Mode S Address A18 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 2J Input Program Mode S Address A19 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 2K Input Program Mode S Address A20 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 3A Input Program Mode S Address A21 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 3B Input Program Mode S Address A22 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 3C Input Program Mode S Address A23 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 3D Input Program Mode S Address A24 (LSB) 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 3F Input 429 Spare 429 Input 1A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP

3G Input 429 Spare 429 Input 1B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP 3H Input Discrete Functional Test 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 3J Output Discrete Spare Out 1 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 3K Output Discrete Transponder Fail #1 Discrete

Output

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 4A Input Discrete Spare In1 4.75KΩ

1/2W

50±0.5VAC,

50±0.5Hz NA

MP 4B Input Discrete Spare In2 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

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Pin I/O Type Description Series

Resistor 1% AC Voltage Clamping Voltage

MP 4C Input 429 FMC/GNSS #2 In #1 A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP 4D Input 429 FMC/GNSS #2 In #1 B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP 4E Input Program

Strobed Aircraft Category A (MSB) 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 4F Input Program

Strobed Aircraft Category B (LSB) 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP

4G Input Program ADS-B Configuration Parity 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 4H Input Program

Strobed ADS-B Receive Capability 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 4J Input Discrete Spare In3 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 4K Input Discrete Spare In4 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 5A Input 429 ARINC 706/575 Air Data Input

Port 2A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP 5B Input 429 ARINC 706/575 Air Data Input

Port 2B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP 5E Output 429 ATSU Out A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP 5F Output 429 ATSU Out B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP

5G Input Discrete Extended Squitter Disable 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 5H Input Discrete Spare In5 (Mode S DL/DLP

Program)

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 5J Input Program Antenna BITE Program 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 5K Input Discrete Spare In6 4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 6A Input 429 Maintenance Data Input Port A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP 6B Input 429 Maintenance Data Input Port B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP 6C Output 429 Maintenance Data Output Port

A 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP 6D Output 429 Maintenance Data Output Port

B 560Ω 1/2W 40±0.5VAC,

50±0.5Hz ± 11.2 V

MP 6E Input Discrete Alternate Air Data Source

Select

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 6F Input Program Altitude Type Select A

Discrete Input

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP

6G Input Program Altitude Type Select B

Discrete Input

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

MP 7K Input Discrete Acquisition Squitter Inhibit

(Honeywell Defined)

4.75KΩ

1/2W

80±0.5VAC,

50±0.5Hz ± 72.7 V

BP 1 Input Power 115 VAC Primary Power Hot 4.75KΩ

1/2W

330±0.5VAC,

50±0.5Hz ± 291 V

BP 7 Input Power 115 VAC Primary Power Cold 4.75KΩ

1/2W

330±0.5VAC,

50±0.5Hz ± 291 V

BP 12 Input/Output Suppression Suppression Pulse 4.75KΩ

1/2W

150±0.5VAC,

50±0.5Hz ± 113.0 V

BP 13 Input/Output Suppression Suppression Pulse - Daisy

Chaining

4.75KΩ

1/2W

150±0.5VAC,

50±0.5Hz ± 113.0 V

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7.4.5.2 Test of hardware/software performances in normal use

7.4.5.2.1 Receiver Characteristics

Step 1 Sensitivity

a. Interrogate the transponder with a standard Mode C ATCRBS/Mode S All-Call interrogation

on Top antenna.

b. Determine the minimum RF signal level required to produce 90% transponder reply

efficiency (MTL).

c. Verify that MTL is in the range -75dBm ± 3dB

d. Repeat steps a,b,c interrogating the transponder on Bottom antenna.

Note: the -78dBm is obtained from best sensitivity (-77dBm) + best cable loss (-1dB), -72dBm is obtained from worst

sensitivity (-69dBm) + worst cable loss (-3dB)

Step 2 Sensitivity @ Low Sensitivity

a. Interrogate the transponder with a standard Mode C ATCRBS/Mode S All-Call interrogation

on Top antenna at MTL+3dB.

b. Verify that the reply ratio is ≥ 99%.

c. Set Low_Sense Activate discrete to GND

d. Verify that the reply ratio is 0%.

e. Increase the level of the interrogation to MTL+9dB

f. Verify that the reply ratio is ≥ 99%.

g. Set Low_Sense Activate discrete to OPEN

Step 3 ATCRBS and ATCRBS/Mode S All-Call Dynamic Range

a. Interrogate the transponder with a standard Mode A interrogation at RF levels at the

following levels: MTL +3 dB, -60dBm, -50dBm, -40dBm, -30dBm, -22dBm

b. For each of the above levels determine reply ratio and verify that it is ≥ 99%.

c. Interrogate the transponder with a standard Mode C ATCRBS/Mode S All-Call interrogation

at RF levels at the following levels: MTL +3 dB, -60dBm, -50dBm, -40dBm, -30dBm, -

22dBm

d. For each of the above levels determine reply ratio and verify that it is ≥ 99%.

Note: -22dBm is obtained from -21dBm considering the best antenna cable attenuation equal to 1dB

Step 4 Mode S Sensitivity

a. Interrogate the transponder with a Mode S Only All-Call interrogation at a standard rate

with PR=0.

b. Determine the minimum RF level to produce 90% proper reply efficiency (MTL).

c. Verify that MTL is in the range -76dBm ± 2dB

Note: the -78dBm is obtained from best sensitivity (-77dBm) + best cable loss (-1dB), -74dBm is obtained from worst

sensitivity (-71dBm) + worst cable loss (-3dB)

Step 5 Mode S Dynamic Range

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a. Interrogate the transponder with a Mode S Only All-Call interrogation at a standard rate

with PR=0 with RF levels of MTL+3dBm -50dBm and -22dBm.

b. For each of the above levels determine reply ratio and verify that it is ≥ 99%.

Note: -22dBm is obtained from -21dBm considering the best antenna cable attenuation equal to 1dB

7.4.5.2.2 Reply Transmission Frequency

Step 1 Reply Transmission Frequency

a. Modify the label 016 on Control A429 to set all A1,A2,A4,B1,B2,B4,C1,C2,C4,D1,D2,D4 to

‘1’ (setup for 7777 pulse reply)

b. Interrogate the transponder with a standard Mode A interrogation.

c. Verify that reply center frequency is 1090MHz±1Mhz.

d. Interrogate the transponder with a standard Mode A ATCRBS/Mode S All-Call.

e. Verify that reply center frequency is 1090MHz±1Mhz.

7.4.5.2.3 RF Peak Power Output

Step 1 ATCRBS Power Output

a. Modify the label 016 on Control A429 to set all A1,A2,A4,B1,B2,B4,C1,C2,C4,D1,D2,D4 to

‘1’ (setup for 7777 pulse reply)

b. Interrogate the transponder with a standard Mode A interrogation at 1200 interrogations

(maximum available)

c. Measure the power of each single pulse

d. Verify that the lowest value is in the range 24dBW÷28dBW

Note: 24dBW is obtained from minimum required 21dBW at the antenna considering the worst antenna cable attenuation equal to

3dB. 28dBW is obtained is obtained from maximum required 27dBW at the antenna considering the best antenna cable attenuation

equal to 1dB

Step 2 Short Mode S Power Output (§2.2.3.2)

a. Interrogate the transponder with a standard Mode A ATCRBS/Mode S All-Call interrogation

at the standard rate

b. Measure the power of each single pulse

c. Verify that the lowest value is in the range 24dBW÷28dBW

Note: 24dBW is obtained from minimum required 21dBW at the antenna considering the worst antenna cable

attenuation equal to 3dB. 28dBW is obtained is obtained from maximum required 27dBW at the antenna considering

the best antenna cable attenuation equal to 1dB

Step 3 Long Mode S Power Output

a. Interrogate the transponder with a standard Mode S UF4 interrogation requesting for DF20

at 100 interrogations per second (this exceeds the 16 requested by MOPS and include

equivalent extended squitters)

b. Measure the power of each single pulse

c. Verify that the lowest value is in the range 24dBW÷28dBW

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Note: 24dBW is obtained from minimum required 21dBW at the antenna considering the worst antenna cable

attenuation equal to 3dB. 28dBW is obtained is obtained from maximum required 27dBW at the antenna considering

the best antenna cable attenuation equal to 1dB

7.4.5.2.4 Reply Rate Capability

Step 1 ATCRBS Reply Rate Capability + Continuous Reply Rate Capability

a. Modify the label 016 on Control A429 to set all A1,A2,A4,B1,B2,B4,C1,C2,C4,D1,D2,D4

and SPI to ‘1’ (setup for 15 pulse reply)

b. Interrogate the transponder at a constant rate of 1200 Mode A ATCRBS interrogations per

second plus 100 Mode S UF4 requesting for DF20

c. Measure the output power and frequency and reply ratio for each type of interrogation

d. Verify that the measured power is in the range 24dBW÷28dBW

e. Verify that reply center frequency is 1090MHz±1Mhz.

f. Verify that the reply ratio is ≥ 99% for both Mode A and Mode S

Note: 24dBW is obtained from minimum required 21dBW at the antenna considering the worst antenna cable

attenuation equal to 3dB. 28dBW is obtained is obtained from maximum required 27dBW at the antenna considering

the best antenna cable attenuation equal to 1dB

7.4.5.2.5 Power Consumption

Step 1 Power Consumption at max duty cycle at nominal power supply conditions

a. When running the Reply rate capability test measure:

i. Power consumption in W and verify that is always less than 60W

ii. Power factor, verify that is greater than 0,8

Step 2 Power Consumption at max duty cycle at max voltage and max emergency frequency

a. Set the power supply voltage at 122 Vrms (maximum normal voltage)

b. Set the power supply frequency at 440 Hz (maximum emergency frequency)

c. When running the Reply rate capability test measure:

i. Power consumption in W and verify that is always less than 60W

ii. Power factor, verify that is greater than 0,8

Step 3 Power Consumption at max duty cycle and min voltage and min emergency frequency

a. Set the power supply voltage at 104 Vrms (minimum normal voltage)

b. Set the power supply frequency at 360 Hz (minimum emergency frequency)

c. When running the Reply rate capability test measure:

i. Power consumption in W and verify that is always less than 60W

ii. Power factor, verify that is greater than 0,8

7.4.5.2.6 I/O Discrete Interface

Step 1 Mode S All-Call Addresses

a. Set the ATC test set to generate a Mode-S Only All-Call interrogation with PR, IC and CL

fields set to ZERO.

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b. Verify that the AA field of the transponder reply is AAAAAAH

c. Verify that XPDR FAIL#1, XPDR FAIL#2 and ADSB FAIL discrete are set in off condition

(No Failure condition)

d. Power off the transponder addresses

e. Set the MS Address discrete at 555555H.

f. Power on the transponder

g. Set the ATC test set to generate a Mode-S Only All-Call interrogation with PR, IC and CL

fields set to ZERO.

h. Verify that the AA field of the transponder reply is 555555H

i. Removal power from the Unit Under Test

Step 2: Address set to ALL ZEROs

a. Set the ICAO 24-Bit Address provided to the UUT to ALL ZEROs.

b. Apply power to the UUT.

c. Verify that XPDR FAIL#1, XPDR FAIL#2 and ADSB FAIL discrete are set in on condition

(Failure condition)

d. Removal power from the Unit Under Test

Step 3: Address set to ALL ONEs

a. Set the ICAO 24-Bit Address provided to the UUT to ALL ONEs.

b. Apply power to the UUT.

c. Verify that XPDR FAIL#1, XPDR FAIL#2 and ADSB FAIL discrete are set in on condition

(Failure condition)

d. Removal power from the Unit Under Test.

Step 4 Pressure Altitude Interface

a. Setup the ATC test set to send standard ATCRBS Mode C interrogation

b. Verify that the replies code is equal to 3329 feet.

c. Set Alternate Air Data Source Select discrete input to OPEN

d. Verify that the replies code is equal to -336 feet.

e. Power off the UUT.

f. Apply default setup

g. Set Alternate Air Data Type Select A (Pin MP 6F) to GND.

h. Apply power to the UUT.

i. Verify that the replies code is equal to 1664 feet.

j. Set the bit 11 of label 016 and 031 of control bus (Control Port B) to ‘1’ to disable altitude

reporting

k. Verify that only the framing pulses are present

l. Set Control Data Port Select (TP-7D) to GND

m. Verify that the replies code is equal to 1664 feet.

n. Set Air/Ground Discrete #2 to GND

o. Verify that no replies are transmitted by the transponder

p. Set Air/Ground Discrete #2 to OPEN

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q. Set Air/Ground Discrete #1 to GND

r. Verify that no replies are transmitted by the transponder

s. Set Air/Ground Discrete #2 to OPEN

t. Set Air/Ground Discrete #1 to OPEN

u. Verify that the replies code is equal to 1664 feet.

v. Set Standby/On discrete to GND

w. Verify that no replies are transmitted by the transponder

Step 5 Aircraft Identification Data

a. Provide the UUT with an Aircraft Identification Data of “UJUJUJUJ” through FMC/GEN

interface with each char updated at 1 Hz

b. For up to 10.0 seconds after completing Step a, set the ATC test set to generate a Mode S

interrogation with the following GICB Extraction interrogation in order to extract the

Register 2016 - Aircraft Identification.

i. UF=4, PC = 0, RR = 18, DI = 0, IIS = 0

c. Within FIVE (5) seconds of starting the interrogations, verify that the transponder replies

with a DF=20 reply with:

i. DR =4 or 5

ii. MB = 2016 + “UJUJUJUJ” (MB=0x2054A54A54A54A)

d. Provide the UUT with an Aircraft Identification Data of “6 9 6 9 XY” through FMC/GEN

interface (a SPACE is present between 6 and 9, 9 and 6, 6 and 9, 9 and X) with each char

updated at 1 Hz

e. For up to 10.0 seconds after completing Step d, set the ATC test set to generate a Mode S

interrogation with the following GICB Extraction interrogation in order to extract the

Register 2016 - Aircraft Identification.

i. UF=4, PC = 0, RR = 18, DI = 0, IIS = 0

f. Within TEN (10) seconds of completing Step a, verify that the transponder replies with a

DF=20 reply with:

i. MB = 2016 + “6969XY ” (last two characters set to SPACE) ”

(MB=0x20DB9DB9619820)

g. Disable all Aircraft Identification labels on every A429 bus

h. Wait 20 seconds and verify that the transponder replies with a DF=20 reply with:

i. MB = 2016 + “TAIL123 ” (last two characters set to SPACE) ”

Step 6 ADSB Discrete

a. Verify the transmission of acquisition squitter

b. Set the Acquisition Squitter inhibit (MP-7K) to GND

c. Verify that the acquisition squitter is no longer transmitted

d. Set the Acquisition Squitter inhibit (MP-7K) to OPEN

e. Verify the transmission of any of Extended Squitters

f. Set the Extended Squitter Disable (MP-5G) to GND

g. Verify that the Extended Squitters are no longer transmitted

h. Set the Extended Squitter Disable (MP-5G) to OPEN

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i. Verify that the Squitters are transmitted on both the antennas

j. Verify that Label 353 from Maintenance Bus has the following fields:

i. SDI set to 2d

ii. Max Cruise Air Speed set to 4d

iii. Length/Width set to 10d

iv. GPS Antenna Offset set to 4d

v. Aircraft Category set to 3d

vi. 1090ES IN set to 0

vii. UAT Receiver set to 0

viii. ADSB Conf Parity set to 0

k. Verify that Label 352 from Maintenance Bus has the following fields:

i. SDI set to 2d

ii. Antenna BITE set to 0

iii. NACv set to 1d

iv. SDA set to 2d

v. ADSB Fail Disable set to 0

l. Power off the UUT.

m. Apply default setup

n. Set AC Length/Width A,B,C to Open/Gnd/Open

o. Set GPS Ant Long Off A/B/C to Gnd/Open/Open

p. Set NACv to Open

q. Set SDA to Open

r. Set Aircraft Category A/B to Open/Gnd

s. Set ADSB Receive Capability to GND

t. Set ADSB Config Parity to GND

u. Set SDI to Gnd/Open

v. Set Antenna BITE to Gnd

w. Set ADSB Fail Disable to Gnd

x. Set Antenna Program to Gnd

y. Power on the UUT.

z. Verify that Label 353 from Maintenance Bus has the following fields:

i. SDI set to 1d

ii. Max Cruise Air Speed set to 4d

iii. Length/Width set to 3d

iv. GPS Antenna Offset set to 10d

v. Aircraft Category set to 1d

vi. 1090ES IN set to 1d

vii. UAT Receiver set to 0

viii. ADSB Conf Parity set to 1d

aa. Verify that Label 352 from Maintenance Bus has the following fields:

i. SDI set to 1d

ii. Antenna BITE set to 1d

iii. NACv set to 0d

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iv. SDA set to 0d

v. ADSB Fail Disable set to 1d

bb. Verify that the squitters are transmitted only on Bottom Antenna.

Step 7 Suppression Out Discrete

a. Verify that for each transmitted squitter a suppression pulse is generated on BP12 output

with the following characteristics:

b. Distance between rising edge of suppression pulse and leading edge of first rf pulse is less

than 10 us

c. Distance between trailing edge of last rf pulse and falling edge of suppression pulse is less

than 10 us

d. Amplitude of suppression pulse is greater than 18V

7.4.5.2.7 A429 Interface Health

a. Verify that Label 351 from Maintenance Bus has the following fields:

i. MCP/FCU Bus set to 0 – Active

ii. ATC Control set to 0 – Active

iii. FMS # 1 Flight ID set to 0 – Active

iv. GNSS #1 Bus set to 0 – Active

v. GNSS #2 Bus set to 0 – Active

vi. IRS #1 Bus set to 0 – Active

vii. IRS #2 Bus set to 0 – Active

viii. FMS Gen. #1 Bus set to 0 – Active

ix. FMS Gen. #2 Bus set to 0 – Active

b. Stop the transmission of all the labels from the MCP, Control, FMS#1, GNSS#1, GNSS#2,

IRS#1, IRS#2, FMS Gen#1, FMS Gen#2 busses:

c. Verify that Label 351 from Maintenance Bus has the following fields:

i. MCP/FCU Bus set to 1= Inactive

ii. ATC Control set to 1= Inactive

iii. FMS # 1 Flight ID set to 1= Inactive

iv. GNSS #1 Bus set to 1= Inactive

v. GNSS #2 Bus set to 1= Inactive

vi. IRS #1 Bus set to 1= Inactive

vii. IRS #2 Bus set to 1= Inactive

viii. FMS Gen. #1 Bus set to 1= Inactive

ix. FMS Gen. #2 Bus set to 1= Inactive

7.4.5.2.8 Front Panel LEDS

a. Verify that the GO led is active

b. Press the Test Button (keep the button pressed)

c. Verify that all others LEDs are active

d. Release the Test Button

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Figure 7-4 – TRA-100B – OFF A/C Troubleshooting STTE NVM Interface

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Figure 7-5 – TRA-100B – OFF A/C Troubleshooting – Diagnostic Properties (1)

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Figure 7-6 – TRA-100B – OFF A/C Troubleshooting – Diagnostic Properties (2)

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Figure 7-7 – TRA-100B – OFF A/C Troubleshooting STTE NVM Interface

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Figure 7-8 – TRA-100B – OFF A/C Troubleshooting – Diagnostic Properties (1)

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Figure 7-9 – TRA-100B – OFF A/C Troubleshooting – Diagnostic Properties (2)

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8 MAINTENANCE

8.1 TRA-100B MODE S TRANSPONDER – FIRST LEVEL MAINTENANCE

8.1.1 On Aircraft Maintenance (Scheduled)

No scheduled maintenance is required; the equipment does not require alignment, calibration,

lubrication or other non-operator adjustments or preventive maintenance.

Nevertheless FAA and EASA procedure require to remove the TRA-100B from platform and

perform an extensive test in the shop every two (2) years independently from failure occurrences.

8.1.2 On Aircraft Maintenance (Unscheduled)

The On Aircraft maintenance is a repair task by replacement of faulty Line Replaceable Unit

(LRU).

LRU Replace Procedure

TRA-100B Modes S Transponder TRA-100B Mode S Transponder – Replace Procedures

This procedure can be performed after the fault isolation procedure as para 7.3.

As preliminary check before starting the fault isolation procedure, perform inspection of the LRU as

per 8.3

Post-installation check is granted by Power Up BIT results provided at the end of start-up.

8.1.3 Servicing

 Cleaning

If the equipment requires cleaning, follow the instructions given in the cleaning procedure (ref.

TRA-100B Mode S Transponder – Cleaning).

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8.2 TRA-100B MODE S TRANSPONDER – CLEANING

Standard Equipment

Description Identification Nr. Qty.

None

Materials

Description Identification Nr.

Qty.

Soft brush Local supply 1

Denatured Alcohol S-738 As Required

Electro Contact Cleaner QD02130 1

Lint-free cloth Local supply 1

Spares

Description Identification Nr. Qty.

None

Safety Precautions

WARNING

MAKE SURE THAT THE EQUIPMENT IS DISCONNECTED FROM ALL

ELECTRICAL POWER SOURCES BEFORE YOU DO ANY

MAINTENANCE WORK.

WARNING

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PERFORM TASK IN VENTILATED AREA AND USE PROTECTIVE CLOTHING.

WARNING

DENATURED ALCOHOL, ELECTRO CONTACT CLEANER ARE DANGEROUS MATERIALS

MAKE SURE THAT YOU KNOW THE

SAFETY PRECAUTIONS AND THE FIRST AID INSTRUCTIONS.

Preliminary Operations

 None

Procedure

1. Clean the equipment with a soft brush moist with the Denatured Alcohol.

2. Wipe the equipment with a dry Lint-free cloth.

3. Inspect all the visible electric components and connections.

4. Clean electrical connectors with an Electro Contact Cleaner.

Close Up

1. Removal all the tools, the materials and the equipment from your work area.

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8.3 TRA-100B MODE S TRANSPONDER – INSPECTION

Standard Equipment

Description Identification Nr. Qty

None

Materials

Description Identification Nr. Qty

None

Spares

Description Identification Nr. Qty

None

Safety Precautions

WARNING

MAKE SURE THAT YOU REMOVAL THE ELECTRICAL POWER SUPPLY

BEFORE YOU DO THIS PROCEDURE.

Preliminary operations

 None

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Procedure

1. Check for visible damage of equipment.

2. Make sure that connectors are properly installed.

3. Check that ground connections, where existing, are made properly.

4. Switch power off, disconnect cables one at time, and inspect connector pins.

Close up

1. Removal all the tools, the materials and the equipment from your work area.

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8.4 TRA-100B MODE S TRANSPONDER – SECOND LEVEL MAINTENANCE

8.4.1 TRA-100B, Data Processor and I/O – Replace procedure

Standard Equipment

Description Identification Nr. Qty

Torque Screwdriver bit holder Local Supply 1

Bit cross-point sz. 2 Local Supply 1

Bit hex open end 8 mm. Local Supply 1

Materials

Description Identification Nr. Qty

Spares

Description Identification Nr. Qty

Data Processor and I/O TAQ-5432/03 1

Safety Precautions

WARNING

MAKE SURE THAT THE EQUIPMENT IS DISCONNECTED FROM

ALL ELECTRICAL POWER SOURCES BEFORE YOU DO ANYMAINTENANCE WORK.

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Preliminary operations

 None

Procedure

1. Removal Procedure

1.1) Removal Transponder cover (right side) unscrewing the related M2,5 fourteen

crosshead screws using a torque screwdriver bit holder and appropriate bit (1). (Figure

8-1, Figure 8-2)

1.2) Unscrew two antenna cables using the related tool starting from the upper one and then

the lower one (2)

1.3) Disconnecting supply voltages loosen the clips of connector (3)

1.4) Removal RF cables making an a half turn to the block of related connector (4)

1.5) Extract RFFE module (10)

1.6) Disconnect and Removal the display flat cable (5)

1.7) Unscrew nine crosshead screws using a torque screwdriver bit holder and related bit

avoiding to loose screws and related washers (each screw is supplied with a flat

washer, and spring washer) (6)

1.8) Removal the Data Processor and I/O module

NOTE: To Removal the module keep the antenna cables near the wired chassis using your

thumbs and with the forefingers pull up the board until the un-mating from wired chassis

2. Install Procedure

2.1) Install Data Processor and I/O Module. (Figure 8-1, Figure 8-2)

NOTE: To install the module keep the antenna cables close the wired chassis using your

thumbs and with the forefingers. Furthermore verify that Ethernet and Multipin external

connectors have been correctly entered in related housing placed in the frontal of Wired

Chassis (8).

2.2) In order to connect correctly the Data Processor and I/O module place and tighthen gently

the two corners Phillips screws (7).

NOTE: The spring washer must be installed before the flat washer.

2.3) Carefully press the Data Processor and I/O module on the left side of until the

connectors are mated (9)

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2.4) Fixing the two corners cross head screws using a torque screwdriver bit holder and

appropriate bit with a force of 0.45 N/m (7).

2.5) Install and tighten the seven cross head screws using a torque screwdriver bit holder

and appropriate bit with a force of 0.45 N/m (6).

2.6) Carefully insert display flat cable (5)

2.7) Insert RF cable and secure it with half turn (4)

2.8) Carefully insert power supply connector securing it with clips (3)

2.9) Install the antenna cables and tighten it with the torque screwdriver bit holder and

appropriate bit with a force of 0.45 N/m (6).

2.10) Install Transponder cover (right side) fixing the related M2,5 fourteen crosshead screws

using a torque screwdriver bit holder and appropriate bit (1).

Figure 8-1 – TRA-100B, Data Processor and I/O – Replace procedure

12 3 4

5

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Figure 8-2 – TRA-100B, Data Processor and I/O – Replace procedure (position)

Close up

1. Removal all the tools, the materials and the equipment from your work area. Perform the

Check-out procedure as per para. 1.1 to verify the failure removal.

6 7 8 9

10

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8.4.2 TRA-100B, RF Subassembly – Replace procedure

Standard Equipment

Description Identification Nr. Qty

Torque Screwdriver bit holder Local Supply 1

Bit cross-point sz. 2 Local Supply 1

Bit hex open end 8 mm. Local Supply 1

Materials

Description Identification Nr. Qty

Spares

Description Identification Nr. Qty

RF - Subassembly TAG-5501/03 1

Safety Precautions

WARNING

MAKE SURE THAT THE EQUIPMENT IS DISCONNECTED FROM

ALL ELECTRICAL POWER SOURCES BEFORE YOU DO ANYMAINTENANCE WORK.

Preliminary operations

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 None

Procedure

1. Removal Procedure

1.1) Follow the procedure to remove the Data Processor and I/O module (Para. 8.4.1). (Figure

8-3, Figure 8-2)

1.2) Unscrew nine crosshead screws using a torque screwdriver bit holder and related bit

avoiding to loose screws and related washers (each screw is supplied with a flat washer,

and spring washer) (6)

1.3) Removal the RF Subassembly

NOTE: To remove the module keep the antenna cables near the wired chassis using your

thumbs and with the forefingers pull up the board until it is separated from wired chassis

2. Install Procedure

2.1) Install the RF Subassembly. (Figure 8-3, Figure 8-2)

NOTE: To install the module keep the antenna cables close the wired chassis using your

thumbs and with the forefingers. Furthermore verify that Ethernet and Multipin external

connectors have been correctly entered in related housing placed in the frontal of Wired

Chassis (8).

2.2) In order to connect correctly the Data Processor and I/O module place and tighten gently

the two corners Phillips screws (7).

NOTE: The spring washer must be installed before the flat washer.

2.3) Carefully press the Data Processor and I/O module on the left side of until the connectors

are mated (9)

2.4) Tighten the two corners cross head screws using a torque screwdriver bit holder and

appropriate bit with a force of 0.45 N/m (7).

2.5) Install and tighten the seven cross head screws using a torque screwdriver bit holder and

appropriate bit with a force of 0.45 N/m (6).

2.6) Carefully insert display flat cable (5)

2.7) Insert RF cable and secure it with half turn (4)

2.8) Carefully insert power supply connector securing it with clips (3)

2.9) Install the antenna cables and tighten it with the torque screwdriver bit holder and

appropriate bit with a force of 0.45 N/m (6).

2.10) Install Transponder cover (right side) fixing the related M2,5 fourteen crosshead

screws using a torque screwdriver bit holder and appropriate bit (1).

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Figure 8-3 –TRA-100B, RF Subassembly – Replace procedure

Close up

1. Removal all the tools, the materials and the equipment from your work area.

2. Perform the Check-out procedure as per para. 1.1 to verify the failure removal.

12 3 45 11

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8.4.3 TRA-100B, AC Power Supply (ACPS) – Replace procedure

Standard Equipment

Description Identification Nr. Qty

Torque Screwdriver bit holder Local Supply 1

Bit cross-point sz. 2 Local Supply 1

Materials

Description Identification Nr. Qty

Spares

Description Identification Nr. Qty

Power Supply (ACPS) TAG-5433/03 1

Safety Precautions

WARNING

MAKE SURE THAT THE EQUIPMENT IS DISCONNECTED FROM

ALL ELECTRICAL POWER SOURCES BEFORE YOU DO ANYMAINTENANCE WORK.

Preliminary operations

 None

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Procedure

1. Removal Procedure

1.1. Removal Transponder cover (left side) unscrewing the M2,5 fourteen crosshead screws

using a torque screwdriver bit holder and related bit (1). (Figure 8-4, Figure 8-5)

1.2. Removal the two cables connecting Wired Chassis to DC Power Supply (2).

1.3. Removal the cable connecting AC Power Supply to DC Power Supply (3)

1.4. Unscrew the four crosshead screws placed on the lower border of DC Power Supply

module using a torque screwdriver bit holder and appropriate bit (4)

1.5. Unscrew the five crosshead screws using a torque screwdriver bit holder and appropriate

bit. (5)

1.6. Removal the DC Power Supply module from the failed AC Power Supply module.

2. Install Procedure

2.1. Insert the DC Power Supply module on a serviceable AC Power Supply module. (Figure

8-4, Figure 8-5)

2.2. Tighten the related five screws using a torque screwdriver bit holder and appropriate bit

with a force of 0.45 N/m (5).

2.3. Tighten the related 4 screws using a torque screwdriver bit holder and appropriate bit with

a force of 0.45 N/m (4).

2.4. Connect the cable connecting AC Power Supply to DC Power Supply (3).

2.5. Connect the two cables connecting Wired Chassis to DC Power Supply. (2)

2.6. Install the Transponder cover (left side) and tighten the related fourteen crosshead screws

using a torque screwdriver bit holder and related bit (1) with a force of 0.95 N/m.

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Figure 8-4 – TRA-100B, AC Power Supply (ACPS) – Replace procedure

1

2

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Figure 8-5 – TRA-100B, ACPS and DCPS – Replace procedure (position)

Close up

1. Removal all the tools, the materials and the equipment from your work area.

2. Perform the Check-out procedure as per para. 1.1 to verify the failure removal.

3

4

2

5

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8.4.4 TRA-100B, DC Power Supply (DCPS) – Replace procedure

Standard Equipment

Description Identification Nr. Qty

Torque Screwdriver bit holder Local Supply 1

Bit cross-point sz. 2 Local Supply 1

Materials

Description Identification Nr. Qty

Spares

Description Identification Nr. Qty

DC Power Supply (DCPS) TAG-5435/03 1

Safety Precautions

WARNING

MAKE SURE THAT THE EQUIPMENT IS DISCONNECTED FROM

ALL ELECTRICAL POWER SOURCES BEFORE YOU DO ANYMAINTENANCE WORK.

Preliminary operations

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 None

Procedure

1. Removal Procedure

1.1. Removal Transponder cover (left side) unscrewing the relative M2,5 fourteen crosshead

screws using a torque screwdriver bit holder and related bit (1). (Figure 8-6, Figure 8-7)

1.2. Removal the two cables connecting Wired Chassis to DC Power Supply (2).

1.3. Removal the cable connecting AC Power Supply to DC Power Supply (3)

1.4. Unscrew the four crosshead screws placed on the lower border of DC Power Supply

module using a torque screwdriver bit holder and appropriate bit (4)

1.5. Unscrew the five crosshead screws using a torque screwdriver bit holder and appropriate

bit. (5)

1.6. Removal the DC Power Supply module.

2. Install Procedure

2.1) Insert the DC Power Supply module. (Figure 8-6, Figure 8-7)

2.2) Fixing it tighten the related five screws using a torque screwdriver bit holder and

appropriate bit with a force of 0.45 N/m (5).

2.3) Tighten the related 4 screws using a torque screwdriver bit holder and appropriate bit with

a force of 0.45 N/m (4).

2.4) Connect the cable connecting AC Power Supply to DC Power Supply (3).

2.5) Connect the two cables connecting Wired Chassis to DC Power Supply. (2)

2.6) Install the Transponder cover (left side) and fix it tightening the related fourteen

crosshead screws using a torque screwdriver bit holder and related bit (1) with a force of

0.95 N/m.

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Figure 8-6 – TRA-100B, DC Power Supply (DCPS) – Replace procedure

1

2

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Figure 8-7 – TRA-100B, ACPS and DCPS – Replace procedure (position)

Close up

1. Removal all the tools, the materials and the equipment from your work area.

2. Perform the Check-out procedure as per para. 1.1 to verify the failure removal.

3

4

2

5

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8.4.5 TRA-100B, Wired Chassis (WC)– Replace procedure

Standard Equipment

Description Identification Nr. Qty

Torque Screwdriver bit holder Local Supply 1

Bit cross-point sz. 2 Local Supply 1

Bit hex open end 8 mm. Local Supply 1

Materials

Description Identification Nr. Qty

Spares

Description Identification Nr. Qty

Wired Chassis (WC) TAE-6001/03 1

Safety Precautions

WARNING

MAKE SURE THAT THE EQUIPMENT IS DISCONNECTED FROM

ALL ELECTRICAL POWER SOURCES BEFORE YOU DO ANYMAINTENANCE WORK.

Preliminary operations

 None

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Procedure

1. Removal Procedure

1.1. Removal Data Processor and I/O module and RF Sub Assembly module following the

procedures described in Figure 8-1, Figure 8-2 and Figure 8-3.

1.2. Removal the AC Power Supply together with DC Power Supply following the procedure

reported in Figure 8-4 and Figure 8-5

1.3. Removal the Wired Chassis

2. Install Procedure

2.1. Install Data Processor and I/O module and RF Sub Assembly module following the

procedures described in Figure 8-1, Figure 8-2 and Figure 8-3.

2.2. Install the AC Power Supply together with DC Power Supply following the procedure

reported in Figure 8-4 and Figure 8-5.

Close up

1. Removal all the tools, the materials and the equipment from your work area.

2. Perform the Check-out procedure as per para. 1.1 to verify the failure removal.

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9 ILLUSTRATED PARTS DATA

9.1 TRA-100B MODE S TRANSPONDER - ILLUSTRATED PARTS DATA

Pos Indent CAGE Part Number Description Qty

001 A0069 TAC-6001/03 TRA-100B Mode S Transponder 1

NI A0069 TAD-6001/03 Hardware Equipment TRA-100B

2 A0069 TAE-6001/03 Wired Chassis (WC) 1

2 A0069 TAQ-5432/03 Data Processor and I/O 1

2 A0069 TAG-5501/03 RF - Subassembly 1

2 A0069 TAG-5433/03 AC Power Supply (ACPS) 1

2 A0069 TAG-5435/03 DC Power Supply (DCPS) 1

3 A0069 TAN-7002/01 DPIO-RFFE SIGNAL CABLE 1

3 A0069 TAN-7006/01 DCPS-ACPS CABLE 1

3 A0069 5106876R0012 TWINAX CABLE 2

3 A0069 61170-06/123 WASHER EL INOX M2.5-5.1mm .6T 9

3 A0069 61530-27/006 SCREW INOX TCC/C M2.5x8mm (V 9

3 A0069 61530-27/013 SCREW INOX TCC/C M2.5x22mm ( 4

3 A0069 62380-12/019 Plate ACRYLIC SINGLE 14mm 70m 1

3 A0069 61170-03/127 WASHER PLANE - INOX M2.5-5mm 27

3 A0069 61530-27/005 SCREW INOX TCC/C M2.5x6mm (V 18

3 A0069 61170-01/124 WASHER PLANE INOX M2.5-6.5mm 4

Leonardo S p a TRA100B Part 87 Aircraft Licensed Transmitter operating at 1090MHz User Manual tman 1124 02x

LEONARDO S.p.a. Part 87 Aircraft Licensed Transmitter operating at 1090MHz tman 1124 02x

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