Becker Avionics BXT6553 Users Manual
Mode S Transponder
Installatio n and Operation
Manual DV15104.03
with ADS-B
BXT6500 Series
Issue 06 September 2018
Article-No. 0647.225 071
Becker Avionics GmbH • Baden-Airpark B108 • 77836 Rheinmünster • Germany
+49 (0) 7229 / 305-0 • Fax +49 (0) 7229 / 305-217
http://www.becker-avionics.com • E-mail: info@becker-avionics.com
Installation and Operation
Becker Avionics
Approved Production and Maintenance Organization
Contact data for:
Europe, Asia,
Becker Avionics GmbH
Contact data for:
America,
Becker Avionics Inc
Certificates see: http://www.becker-avionics.com/company-about/ →Certificates
Oceania and
Africa
Australia, Japan
Baden-Airpark B108
77836 Rheinmünster (Germany)
Tel.: + 49 (0) 7229 / 305-0
Fax: + 49 (0) 7229 / 305-217
Internet: www.becker -avionics.com
Email: info@becker-avionics.com
ustomer Service:
C
Email: support@becker-avionics.com
Email: info@beckerusa.com
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS DESCRIBED
HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY
DAMAGE.
This document and other information from Becker Avionics GmbH provide product or system options
for further investigation by users having technical knowledge.
The user is responsible for making the final selection of the system and components. The user has to
assure that all performance, endurance, maintenance, safety requirements of the application are met
and warnings be observed.
For this the user has to include all aspects of the application to be compliant with the applicable
industry standards and the requirements of the responsible aviation authority. The product
documentations from Becker Avionics GmbH have to be observed.
To the extent that Becker Avionics GmbH provide component or system options based upon data or
specifications provided by the user, the user is responsible for determining that such data and
specifications are suitable and sufficient for all applications and reasonably foreseeable uses of the
components or systems.
erm definition: User in the sense of user, installer, installation company.
T
WARNING - USER RESPONSIBILITY
2 BXT6500 Series DV15104.3 Issue 06 September 2018
Becker Avionics
Installation and Operation
Preface
* design depends on variant
ear Customer,
D
hank you for purchasing a Becker Avionics product. We are pleased that you have chosen our
T
product and we are confident that it will meet your expectations.
For development and manufacturing of our product, the guidelines for highest quality and reliability
have been borne in m ind, supplemented by selection of high quality material, res ponsible production
and testing in accordance to the standards.
Our competent customer support department will respond on any technical question you may have.
Please do not hesitate to contact us at any time.
Transponder Design*
BXT65 Series
with EM module
with mounting tray and backshell
BXT65 Series
DV15104.3 Issue 06 September 2018 BXT6500 Series 3
Installation and Operation
Becker Avionics
List of Effective Pages and Changes
Document: DV15104.03 / issue 06 Article Number 0647.255-071
Added: Descriptions about new variants and extended
Only technical relevant modifications are described in this table.
Cover Page 09/2018
Introduction 09/2018
Chapter 1 – 4 09/2018
Issue Page No.:
06
1-76 all Updated: Editorial adjustments.
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all
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2.7.8 Updated: Configuration example.
--
2.10 Added: Wiring examples.
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Section /
Chapter
1.8.8
Description
temperature
U
pdated: Certification state.
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© by Becker Avionics GmbH / all rights reserved
4 BXT6500 Series DV15104.3 Issue 06 September 2018
Becker Avionics
Installation and Operation
Table of Contents
1 General Description .................................................................................................................... 13
1.1 Introduction.................................................................................................................................. 14
1.2 Purpose of Equipment ................................................................................................................. 15
1.3 Variants Overview ....................................................................................................................... 16
Variants Availability ........................................................................................................... 16
Software Status ................................................................................................................. 16
1.4 Associated Device s ..................................................................................................................... 16
1.5 Scope of Functionality ................................................................................................................. 17
Fixed and Non-Volatile Data ............................................................................................. 18
Diversity ............................................................................................................................ 18
Mode C, Mode S ............................................................................................................... 18
ADS-B (Automatic Dependent Surveillance-Broadcast) ................................................... 19
Supported Transponder Messages .................................................................................. 20
ADS-B Receiver Subset.................................................................................................... 20
Extended Temperature ..................................................................................................... 20
Interfaces .......................................................................................................................... 21
Built-In Test ....................................................................................................................... 21
Summary of Operational Description ................................................................................ 22
1.6 Safety-Conscious Utilization ....................................................................................................... 23
1.7 Restriction for Use ....................................................................................................................... 23
1.8 Technical Data ............................................................................................................................ 24
General Characteristics .................................................................................................... 24
Dimensions & Weight........................................................................................................ 26
Software ............................................................................................................................ 26
Hardware .......................................................................................................................... 26
Continued Airworthiness ................................................................................................... 26
Environmental Conditions - BXT6513............................................................................... 27
Environmental Conditions - BXT6553............................................................................... 29
Certifications ..................................................................................................................... 30
1.9 Order Code.................................................................................................................................. 32
BXT65 Series .................................................................................................................... 32
Accessories ....................................................................................................................... 32
2 Installation .................................................................................................................................... 35
2.1 Packaging, Transport, Storage ................................................................................................... 35
2.2 Device Assignment ..................................................................................................................... 36
Scope of Delivery .............................................................................................................. 36
Additional Required Equipment ........................................................................................ 36
Type Plate ......................................................................................................................... 37
Software Data Plate .......................................................................................................... 38
Meaning of Status LEDs ................................................................................................... 38
2.3 Mounting Requirements .............................................................................................................. 39
Mounting Distance ............................................................................................................ 40
Mounting Tray MT6533 ..................................................................................................... 40
Grounding ......................................................................................................................... 40
Cable Installation .............................................................................................................. 41
Recommended Crimp Tools ............................................................................................. 41
Antenna Cables ................................................................................................................ 42
Antenna Installation .......................................................................................................... 43
2.4 Dimensions.................................................................................................................................. 44
Transponder BXT65 Series .............................................................................................. 44
BXT65 Series with Mounting MT6533 .............................................................................. 45
BXT65 Series with Mounting MT6533 and Backshell BS6533-(100) ............................... 46
2.5 Electrical Installation ................................................................................................................... 47
Connector P1 .................................................................................................................... 47
Connector P2 .................................................................................................................... 49
Connector TOP, BOT (Antenna) ....................................................................................... 50
Connector USB ................................................................................................................. 51
Connector EM ................................................................................................................... 51
Service Connector (optional) ............................................................................................ 51
2.6 Interfaces..................................................................................................................................... 52
ARINC 429 Input Labels ................................................................................................... 52
DV15104.3 Issue 06 September 2018 BXT6500 Series 5
Installation and Operation
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ARINC 429 Output Labels ................................................................................................. 53
2.7 Configuration ............................................................................................................................... 54
General Architecture (example) ........................................................................................ 55
Single Device Installation .................................................................................................. 56
Dual Device Installation ..................................................................................................... 56
Device Installation Number ............................................................................................... 56
Data Source Configuration ................................................................................................ 56
Single Device Installation - Antenna Diversity .................................................................. 58
Single Device Installation – Single Antenna ..................................................................... 58
Dual Device Installation - Antenna Diversity ..................................................................... 59
Single Device Installation – Single Controller ................................................................... 59
Single Device Installation – Dual Controller (Selection by Switch) ................................... 60
Single Device Installation – Dual Controller (Burst Mode) ................................................ 60
Transmitter Disable ........................................................................................................... 61
GNSS Wiring ..................................................................................................................... 62
2.8 Configuration Data....................................................................................................................... 63
Configuration of BXT65XX with EM module ..................................................................... 63
Configuration of BXT65XX with internal memory.............................................................. 63
2.9 Software Update .......................................................................................................................... 64
PC Requirements .............................................................................................................. 64
Software Update Installation ............................................................................................. 64
2.10 Aircraft Wiring .............................................................................................................................. 66
BXT65XX (dual) with Control Device G7614 .................................................................... 66
BXT65XX with Control Device KFS 578A ......................................................................... 67
BXT65XX with GPS Device GTN750 ................................................................................ 67
BXT65XX (dual) with GPS Devices 1203C ....................................................................... 68
BXT6553 (dual) with Control & TCAS Device CTA-81A, TPA-81A .................................. 69
2.11 Post Installation Check ................................................................................................................ 70
Mechanical Installation and Wiring Check ........................................................................ 70
Power Supply .................................................................................................................... 70
Antenna Check .................................................................................................................. 70
Interference Check ............................................................................................................ 71
Mode S Ground Test ......................................................................................................... 71
Error / Failure Indication .................................................................................................... 71
3 Operating Instructions ................................................................................................................ 73
3.1 Device Description....................................................................................................................... 73
Device Assignment ........................................................................................................... 73
Packing, Transport, Storage ............................................................................................. 73
Scope of Delivery .............................................................................................................. 73
Type Plate ......................................................................................................................... 73
3.2 Start-up ........................................................................................................................................ 74
Built In Tests (BIT) ............................................................................................................ 74
Extended Temperature ..................................................................................................... 74
3.3 Operating ..................................................................................................................................... 74
Operating with OEM Controller ......................................................................................... 74
3.4 Read Out and Reset Error Flags ................................................................................................. 74
4 Index .............................................................................................................................................. 76
6 BXT6500 Series DV15104.3 Issue 06 September 2018
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Installation and Operation
List of Figures
Figure 1: Block Diagram – Mode S Transponder Concept (diversity example) ...................................................... 18
Figure 2: Type Plate (example) .............................................................................................................................. 37
Figure 3: Software Data Plate (example) ............................................................................................................... 38
Figure 4: BXT65 Series Mounting Area ................................................................................................................. 40
Figure 5: Antenna Installation (diversity) ................................................................................................................ 43
Figure 6: BXT65 Series .......................................................................................................................................... 44
Figure 7: BXT6565 Series with Mounting Tray MT6533 ........................................................................................ 45
Figure 8: BXT65 Series with Mounting Tray MT6533 and Backshell BS6533-(100) .............................................. 46
Figure 9: BXT65 series Connector Layout ............................................................................................................. 47
Figure 10: BS6533-(100) Connector Layout ......................................................................................................... 47
Figure 11: BS6533-(110) Connector Layout .......................................................................................................... 47
Figure 12: Service Connector inside the Aircraft .................................................................................................... 51
Figure 13: Wiring Diagram (diversity example, external memory) .......................................................................... 55
Figure 14: Single Device Installation ...................................................................................................................... 56
Figure 15: Dual Device Installation ........................................................................................................................ 56
Figure 16: Dual Device Installation, Data Source = External Memory Module ....................................................... 57
Figure 17: External Memory Module via Backshell ................................................................................................ 57
Figure 18: Single Device Installation, Data Source = Internal Memory .................................................................. 58
Figure 19: Single Device Installation - Antenna Diversity ....................................................................................... 58
Figure 20: Single Device Installation – Single Antenna .......................................................................................... 58
Figure 21: Dual Device Installation - Antenna Diversity ......................................................................................... 59
Figure 22: Single Device Installation - Single Controller ........................................................................................ 59
Figure 23: Single Device Installation – Dual Controller .......................................................................................... 60
Figure 24: Single Device Installation – Dual Controller (Burst Mode) .................................................................... 60
Figure 25: Single Device Installation - GNSS Wiring ............................................................................................. 62
Figure 26: Dual Device Installation - GNSS Wiring ................................................................................................ 62
Figure 27: Software Update – Aircraft Installation .................................................................................................. 64
Figure 28: Software Update – Laboratory Installation ............................................................................................ 65
Figure 29: Table – Ground Sensor Connection for Software Update (Laboratory) ................................................ 65
Figure 30: BXT65XX (dual) with Control Device G7614 (Gables) .......................................................................... 66
Figure 31: BXT65XX with Control Device KFS 578A (BendixKing) ........................................................................ 67
Figure 32: BXT65XX with GPS Device GTN750 (Garmin) ..................................................................................... 67
Figure 33: BXT65XX (dual) with GPS Devices 1203C (Freeflight)......................................................................... 68
Figure 34: BXT6553 (dual) with Control & TCAS Device CTA-81A, TPA-81A ....................................................... 69
DV15104.3 Issue 06 September 2018 BXT6500 Series 7
Installation and Operation
Becker Avionics
List of Abbreviations
A/D
Analog to Digital
AA
Aircraft Address (24-bit ICAO)
AC
Advisory Circular
ACAS
Airborne Collision Avoidance System
ADC
Air Data Computer
ADLP
Airborne Data Link Processor
ADS-B
Automatic Dependent Surveillance-Broadcast
ARINC
Aeronautical Radio Inc.
ATC
Air Traffic Control
ATCRBS
Air Traffic Control Radar Beacon System
AWG
American Wire Gauge
BIT
Built-In Tests
CAN
Controller Area Network
CBIT
Continuous Built-In Test
DAC
Digital to Analog Converter
DC
Direct Current
DF
Downlink Format
DME
Distance Measurement Equipment
DSP
Digital Signal Processor
EEPROM
Electrically Erasable Programmable Read Only Memory
EM
External Memory
EMC
Electro-Magnetic Compatibility
EMI
Electro-Magnetic Interferences
ES
Extended Squitter
ESD
Electrostatic Sensitive Device
EUROCAE
European Organisation for Civil Aviation Equipment
FAA
Federal Aviation Administration
FCC
Flight Control Computer
FLS
Field Loadable Software
FMC
Flight Management Computer
FMS
Flight Management System
FRAM
Ferroelectric Random Access Memory
FRUIT
False Reply Uncoordinated in Time
GND
Ground (electrical)
GNSS
Global Navigation Satellite System
GPS
Global Positioning System
HF
High frequency
I/O
Inputs/Outputs
IBIT
Initiated Built-In Test
ICAO
International Civil Aviation Organization
List of Abbreviations
Alternating Current
Altitude Code
8 BXT6500 Series DV15104.3 Issue 06 September 2018
Becker Avionics
Installation and Operation
List of Abbreviations
ID
Identifier
IF
Intermediate Frequency
II
Interrogation Identifier
IP
Internet Protocol
IRS
Inertial Reference System
LED
Light Emitting Diode
LVDS
Low Voltage Differential Signaling
MCP
Mode Control Panel
MSL
Mean Sea Level
NAV
Navigation
OEM
Original Equipment Manufacturer
PBIT
Power-On Built-In Test
PC
Personal Computer
PCB
Printed Circuit Board
PLD
Programmable Logic Device
RF
Radio Frequency
RFB
RF-Board
RTCA
Radio Technical Commission for Aeronautics Inc.
RX
Receiver, Receive
SDRAM
Synchronous Dynamic Random Access Memory
SI
Surveillance Identifier
SW
Software
TCAS
Traffic Alert and Collision Avoidance System
TF
TufLok®, self-locking screws and threads
TX
Transmitter
USB
Universal Serial Bus
VHF
Very High Frequency
DV15104.3 Issue 06 September 2018 BXT6500 Series 9
Installation and Operation
Becker Avionics
Units
A
Ampere
mA
Milliampere
°C
Degree Celsius
cm
Centimeter
dBm
Power Ratio In Decibel, referenced to 1 mW
dB
Decibel
ft
Foot, feet
g
Gram
kg
Kilogram
kHz
Kilohertz
km/h
Kilometer Per Hour
kt
Knots
MHz
Megahertz
Mbps
Mega Bits Per Second
mm
Millimeter
Nm
Newton Meter
Ohm (Ω)
Resistance
s
Second
V
Volt
mV
Millivolt
W
Watt
mW
Milliwatt
"
Inch
Indicates a hazardous situation which, if not avoided, will result in death or
Indicates a hazardous situation which, if not avoided, could result in death or
Indicates a hazardous situation which, if not avoided, could result in minor or
Is used to address practices not related to physical injury.
Safety instructions (or equivalent) signs indicate specific safety-related
Units
General Safety Definitions
serious injury.
serious injury.
moderate injury.
instructions or procedures.
10 BXT6500 Series DV15104.3 Issue 06 September 2018
Becker Avionics
Installation and Operation
Disposal
The packaging material is inflammable, if it is disposed of improperly by
The device(s) may be installed on an aircraft only by an approved aeronautical
The user is responsible for protective covers and/or additional safety measures in
burning, toxic fumes may develop.
This product contains materials that fall under the special disposal regulation, which corresponds to
the EC directive for dangerous disposal material. We recommend disposing of the respective materials
in accordance with the respectively valid environmental laws.
Dispose circuit boards via a technical waste dump which is allowed to take on e.g. electrolytic
aluminium capacitors. Do under no circumstances dump the circuit boards with normal waste dump.
Warranty Conditions
company (e.g. EASA Part 145) which shall also examine and verify the
installation.
User conversions and changes are not permitted.
Any change made by the u ser excludes any liabilit y on our part (excluding th e work described in th is
manual).
• The device must not be opened.
• Do not make any modifications to the device, except for those described in the manual.
• Make connections to the inputs, outputs and interfaces only in the manner described in
the manual.
• Fix the devices according to the mounting instructions.
We cannot provide any guarantee for other mounting methods.
Conditions of Utilization
General introductory notes
With this device you bought a product whic h was manufactured and tes ted before delivery with th e
utmost care.
Please take your tim e to read the follo wing notes which you ought to follo w closely during i nstallation
and operation.
Otherwise all claims under the warra nty will becom e void and a r educed ser vice l ife or even d amages
must be expected.
order to prevent damages to persons and electric accidents.
Additional Conditions of Utilization
Please refer to "Safety-Conscious Utilization", page 23.
Non-Warranty Clause
We checked the co nte nts o f this publication for com pli anc e with th e as soc ia ted h ar d a nd s of t ware. We
can, however, not exclude discrepancies and do therefore not accept any liability for the exact
compliance. The inf orm atio n in this p ublic ation is r egular ly chec ked, neces sar y co rrec tions wil l be part
of the subsequent publications.
DV15104.3 Issue 06 September 2018 BXT6500 Series 11
Installation and Operation
Becker Avionics
Blank Page
12 BXT6500 Series DV15104.3 Issue 06 September 2018
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General Description
Introduction
1 General Description
In this chapter you can read about:
1.1 Introduction.................................................................................................................................. 14
1.2 Purpose of Equipment ................................................................................................................. 15
1.3 Variants Overview ....................................................................................................................... 16
Variants Availability ........................................................................................................... 16
Software Status ................................................................................................................. 16
1.4 Associated Device s ..................................................................................................................... 16
1.5 Scope of Functionality ................................................................................................................. 17
Fixed and Non-Volatile Data ............................................................................................. 18
Diversity ............................................................................................................................ 18
Mode C, Mode S ............................................................................................................... 18
ADS-B (Automatic Dependent Surveillance-Broadcast) ................................................... 19
Supported Transponder Messages .................................................................................. 20
ADS-B Receiver Subset.................................................................................................... 20
Extended Temperature ..................................................................................................... 20
Interfaces .......................................................................................................................... 21
1.5.8.1 ARINC 429 ................................................................................................................ 21
1.5.8.2 Logical Inputs/Outputs ............................................................................................... 21
1.5.8.3 Status and Control Ports ........................................................................................... 21
1.5.8.4 Internal and External Memory ................................................................................... 21
Built-In Test ....................................................................................................................... 21
Summary of Operational Description ................................................................................ 22
1.6 Safety-Conscious Utilization ....................................................................................................... 23
1.7 Restriction for Use ....................................................................................................................... 23
1.8 Technical Data ............................................................................................................................ 24
General Characteristics .................................................................................................... 24
Dimensions & Weight........................................................................................................ 26
Software ............................................................................................................................ 26
Hardware .......................................................................................................................... 26
Continued Airworthiness ................................................................................................... 26
Environmental Conditions - BXT6513............................................................................... 27
Environmental Conditions - BXT6553............................................................................... 29
Certifications ..................................................................................................................... 30
1.8.8.1 FCC Approval ............................................................................................................ 31
1.9 Order Code.................................................................................................................................. 32
BXT65 Series .................................................................................................................... 32
Accessories ....................................................................................................................... 32
This manual descr ibes the Becker remote controlled Mode S trans ponder of the BXT6500 s eries. T he
type plate on your device shows the part number for identification purposes (see "Type Plate",
page 37).
Before starting operati on of the device( s) please r ead this m anual caref ully, with par ticular atte ntion to
the description referring to your device(s).
DV15104.3 Issue 06 September 2018 BXT6500 Series 13
General Description
Becker Avionics
DV15104.04
M&R
DV15104.03
I&O
General X X
Installation X X
Operation X X
Theory of Operation
X
N/A
Maintenance and Repair
X
N/A
Illustrated Parts List
X
N/A
Modification and Changes
X
N/A
Circuit Diagrams
X
N/A
Certifications X N/A
Attachments X N/A
Purpose of Equipment
1.1 Introduction
The technical information in this document applies to the described product "BXT65XX-(XXX)-(XX).
Details for variants please see "Variants Overview" page 16.
For further descriptions we are using the term "BXT65 series" or "BXT65XX".
If a description refers to only one product variants its full name, e.g. "BXT6513-(000)-(06)", will be
used.
The manuals "Maintenance and Repair" (M&R), "Installation and Operation (I&O) contain the f ol low ing
sections:
Section
14 BXT6500 Series DV15104.3 Issue 06 September 2018
Becker Avionics
General Description
Purpose of Equipment
Actual generation of each ADS-B message type and data within each message
1.2 Purpose of Equipment
The BXT65XX transponder is designed as a r emote-controlle d single blo ck device and is intende d for
installation in aircraft avionics bay.
BXT65XX is a transponder which provides to other stations Mode A/C/S messages as well ADS-B
Extended Squitter functionality (ES).
BXT65XX is a remote-controlled device, which does not include a control panel. It can receive
commands and provides data through a set of standard interfaces.
Features:
• Control Interface ARINC 429.
• Mode A - in this mode, the 4096 character code is sent as a reply to interrogation from a
ground station.
• Mode C - in this mode, the encoded altitude is sent with 100 ft resolution.
• Mode S - interrogations are selective and Mode S transponders will respond to an
interrogation from ground stations or another aircraft with a reply containing its ICAO 24bit
address.
• ADS-B Broadcast-Only System, transmit:
o Airborne Position Message.
o Surface Position Message.
o Airborne Velocity Message.
o Aircraft Identification and C ateg ory Message.
o Aircraft Operational Status Mes sage.
o Extended Squitter Aircraft Status Message.
• ADS-B receiver subset captures Extended Squitter messages from aircraft and ground
vehicles (ADS-B IN functionality not certified).
• Single Antenna Operation (bottom antenna).
• Diversity - operation with two antennas (top and bottom)
o This is required for TCAS ǁ equipped aircraft.
o Additionally, in Europe for installation in aircraft with gross mass in excess of 5700 kg
or a maximum cruising true airspeed in excess of 250 kt (463 km/h).
• Support of the SI code (Surveillance Identifier).
• Elementary surveillance (ELS) and enhanced surveillance (EHS).
• Data link capability.
• GPS receiver connection capability.
• Selftests (BITs) are integrated in the transponder.
depends on availability of navigation data and GPS capabilities.
Actual provision of ELS and EHS data depends of availability of these data from
external equipment and configuration.
DV15104.3 Issue 06 September 2018 BXT6500 Series 15
General Description
Becker Avionics
B
XT
65
XX
- (0XX)
- ( )
Identifier
Modification Index
Model
6513 = Transponder
6553
extended
000 – Diversity
Extended
Design Assurance
BXT6513-(000)
x
C
BXT6513-(010)
C
BXT6513-(020)
x x
C
BXT6553-(000)
x x
B
Manufacturer
Device
Function
BendixKing
KFS 578A
Control Device
Gables
G7614
Control Device
Freeflight
1201
GPS
Freeflight
1203C
GPS
Garmin
GTN750
GPS
Genesys
GPS-WAAS Rx
GPS
Associated Devices
1.3 Variants Overview
Within the part number, the meaning of "XX-(0XX)-()" is:
= Transponder+
temperature range
Variant s Availability
Diversity
sCloaking
(Mode S
disable option)
Softw are Status
Details please see "Software Data Plate", page 38.
1.4 Associated Devices
Temperature
(-55 °C)
010 – Single antenna
020 = Mode S
disable option
Level
Following devices can operate with BXT65 series. For wiring diagrams please see "Aircraft Wiring" page 66.
For other devices please contact Becker Avionics.
This manual describes the BX T65 series from Beck er Avionics. For ot her devices please r efer to the
corresponding manuals.
16 BXT6500 Series DV15104.3 Issue 06 September 2018
Becker Avionics
General Description
1.5 Scope of Functionality
BXT6513-(0XX):
• Operates on radar frequencies; receiving ground radar and ACAS interrogations and
replies via its transmitter with coded pulse packages on 1090 MHz.
• A special position identification pulse (SPI) can be added for a period of 18 seconds to
each pulse package after activation of the dedicated discrete signal input on the device.
• Meets Mode S Enhanced Surveillance (EHS) requirements.
o EHS parameters require additional interface with other aircraft systems and the
BXT6513-(0XX).
o Aircraft that can provide the list of eight Downlink Aircraft Parameters (DAPs) listed in
BDS registers 4.0, 5.0 and 6.0 are considered to be Mode S EHS capable.
o Aircraft that cannot provide these parameters will be considered as not EHS capable.
BXT6513-(000):
• Provides downlink of aircraft information and supporting 2 antennas; one shall be installed
on top side, and the other on the bottom side of the aircraft fuselage (detailed type
description see "Type Plate", page 37).
BXT6513-(010):
• Provides downlink of aircraft information and supporting a single antenna which shall be
installed on the bottom side of the aircraft fuselage (detailed type description see "Type
Plate", page 37).
BXT6513-(020):
• Is a transponder which has in addition to the BXT6513-(000) also the possibility to switch
to Mode A/C only. If the transponder is switched to this Mode it does not supply
Mode S replies.
BXT6553-(000):
• Is a transponder which has in addition to the BXT6513-(000) an extended temperature
range and its Software and Complex Hard ware is desig ned ac c ordin g to
Design Assurance Level B.
Scope of Functionality
DV15104.3 Issue 06 September 2018 BXT6500 Series 17
General Description
Becker Avionics
Interfaces and Signal Conditioning
Antenna
switch
Interrogation
processing/
reply
assembly
1090 MHz
Transmitter
1090 MHz
Receiver
(top antenna)
1090 MHz
Receiver
(bottom antenna)
Supply
Control
Avionic data
Configuration
&
Maintenance
Status
ADLP
Antennas
Scope of Functionality
Fixed and Non-Volatile Data
The BXT65XX conf iguration is stored in a non-vol atile memory. There are two possibilities where to
store configuration data:
• Use the internal memory.
• Use the external memory module EM6100.
The selection of eq uipm ent conf iguratio n so urce is done by har dwar e conf igura tion (s ee " Data Sourc e
Configuration", page 56).
Diversity
Antenna diversity reduc e the potential for antenn a "shading" and helps to prevent target drop out in
each situation.
BXT65XX-(000) is capab le to operate with two antennas (top and bottom), required f or installation in
aircraft with gross mass in excess of 5700 k g or a m aximum cruising true airspee d in ex c ess of 250 kt
(463 km/h).
Mode C, Mode S
Mode C - in this mode, the encoded altitude is sent in addition to the mode A reply.
• Mode C - in this mode, the encoded altitude is sent with 100 ft resolution.
o Data range for 100 ft resolution: -1000…126 750 ft.
BXT65 series as Mode S transponder is an airborne part of Mode S Secondary Surveillance Radar
system which detects ground interrogations arriving at 1030 MHz signal frequency, processes them
and generates responses at 1090 MHz signal frequency.
o The altitude information must be delivered from an external device.
• Mode S - interrogations are selective and Mode S transponders will respond to an
interrogation from ground stations or another aircraft with a reply containing its
ICAO 24 bit address.
o Data range for 25 ft resolution: -1000…50 187 ft.
o Data range for 100 ft resolution: -1000…126 750 ft.
o The altitude information must be delivered from an external device.
18 BXT6500 Series DV15104.3 Issue 06 September 2018
Figure 1: Block Diagram – Mode S Transponder Concept (diversity example)
Becker Avionics
General Description
Scope of Functionality
ADS-B (Aut om at ic Dependent Surveillance-Broadcast)
ADS-B is a GPS based tec hno logy to define and provide aircraf t r ele vant dat a . T o s uppor t AD S-B Out,
the aircraft needs a cert ified GPS recei ver as the position s ource, and this device to send the AD S-B
data. This data can be received by other air- and ground stations.
The Automatic Dependent Surveillance-Broadcast Out (ADS-B Out) function provides position,
velocity and status data on the transponder for br oadcasting as extende d squitter (ES). W hen data is
available, it is transmitted at specific periods and enable other participants to determine current
position, velocity and status of the aircraft without interrogation.
BXT65 series is an ADS-B class B1 or B1S (aircraft broadcast only) Mode S transponder capable for
automatically sending out ADS-B data like:
• (BDS 0,5) Airborne Position Messag e.
o Special Position Identification (SPI).
o Emergency Indicator.
o Barometric Altitude.
o Quality Indicator (NIC).
o Latitude (Airborne Position).
o Longitude (Airborne Position).
• (BDS 0,6) Surface Position Message.
o Quality Indicator (NIC).
o Latitude (Surface Position).
o Longitude (Surface Position).
o Surface Ground Speed.
o Surface Ground Track.
• (BDS 0,8) Aircraft ID and Category Message.
o Aircraft Identification & Category.
• (BDS 0,9) Airborne Velocity.
o Airborne Ground Velocity.
o Geometric to Barometric Altitude Difference.
o Geometric Vertical Speed.
• (BDS 6,1) Emergency/Prior it y Status .
o Squawk Code.
o Emergency Status.
• (BDS 6,5) Aircraft Operational Sta tus Mes sage, Airb or ne and Sur f ace.
o Quality Indicator (NACp, NACv and GVA).
o Quality Indicator (SIL and SDA).
o Version Indicator.
o Surface Length/Width.
o Surface Antenna Offset.
DV15104.3 Issue 06 September 2018 BXT6500 Series 19
General Description
Becker Avionics
Processing received messages into a track file containing information about
Scope of Functionality
Supported Transponder Messages
BXT65 series supports the following Binary Data Selector (BDS) registers.
General Mode S Registers:
• (BDS 1,0) Data Link Capability Repor t.
• (BDS 1,7) Common Usage GICB Capability Report.
• (BDS 1,8 to 1,C) Mode S Specific Services GICB Capability Report.
Elementary Surveillance Registers:
• (BDS 2,0) Flight ID.
• (BDS 2,1) Aircraft Registration.
Enhanced Surveillance Registers:
• (BDS 4,0) Selected Vertical Intention Report (except Vertical Mode).
• (BDS 5,0) Track and Turn Report.
• (BDS 6,0) Heading and Speed Report.
Extended Squitter/ADS-B Registers:
• (BDS 0,5) Airborne Position Message.
• (BDS 0,6) Surface Position Message.
• (BDS 0,8) Aircraft ID and Category Message.
• (BDS 0,9) Airborne Velocit y.
• (BDS 6,1) Emergency/Priority Status.
• (BDS 6,5) Aircraft Operational Stat us Mes sage, A ir borne .
• (BDS 6,5) Aircraft Operational Status Message, Surf ac e.
ADS-B Receiver Subset
The ADS-B receiver subs et operat es at 1090 MH z ban d and det ects , captures an d decod es Exte nded
Squitter messages from aircraft and ground vehicles (DF=17, 18 and optional 19 are supported).
Received ADS-B messages are formed in message reports and transmitted through LAN interface.
This ADS-B IN functionality is not part of the certification.
surrounding aircraft and ground vehicles is not implemented yet.
Extended Temperature
The BXT6553 variant provides features like:
• Extended temperature range.
• Low operating temperature is extended to -55 °C.
• It achieves ED-14G/DO-160G Section 4 Category F2.
• It is intended for installation in non-pressurized and non-controlled temperature locations
on an aircraft that is operated at altitudes up to 55 000 ft.
20 BXT6500 Series DV15104.3 Issue 06 September 2018
Becker Avionics
General Description
Scope of Functionality
We recommend the usage of the External Memory module EM6100 as data
Interfaces
1.5.8.1 ARINC 429
The ARINC 429 specification is a standard how avionics equipment and systems communicate on
aircraft. The specification defines:
• Electrical characteristics.
• Word structures.
• Protocol for bus communication.
Electrical and data form at charac terist ics ar e defined f or a two-wire serial bus with one transm itter and
up to 20 receivers. This simple architecture provides a highly reliable transfer of data. The bus is
capable of operating at a speed of 12.5 kbit/s (low speed) or 100 kbit/s (high speed).
For detailed information about ARINC 429 specifications please refer to: www.arinc.com
.
Copyright Note ARINC: ARINC429 is a privately copy written specification developed to provide
interchange ability and interoperability of line replaceable devices (LRUs) in commercial aircraft.
ARINC stands for Aeronautical Radio, Inc.
1.5.8.2 Logical Inputs/Outputs
The hardware design of BXT65 series provides a subset of inputs and outputs required for
transponder operation.
1.5.8.3 Status and Control Ports
The hardware design of BXT65 series provides a subset of ports for provide information about
transponder status and for controlling.
1.5.8.4 Internal and External Memory
An internal or exter nal memory is used as c onfiguration data sourc e, saving aircraft data installation
and configuration data.
On start-up BXT65 series reads from this non-volatile memory configuration data which include
parameters specif ic to the actual airc raft and inst allation. T ypically, an ex ternal m emory (EM) is used.
If BXT65 series is repl aced e.g. for maintenance, so the new BXT65XX can be connec ted with the
external memory modul e in this way it is guarante ed that all relevant data is available for fas t & easy
exchange.
source.
Built-In Tes t
BXT65 series has advanced Built-In-Test. It monitors most of internal circuits against failures.
DV15104.3 Issue 06 September 2018 BXT6500 Series 21
General Description
Becker Avionics
Scope of Functionality
BXT65XX-(0XX)
Specifications
Transmit Frequency
1090 MHz ±1 MHz
Modulation (Mode A/C)
PAM (Pulse Amplitude Modulation)
Modulation (Mode S)
DPSK (Differential Phase Shift Keying)
Bandwidth (Mode A/C)
8.4 MHz
Bandwidth (Mode S)
8 MHz
Data rate
Depends on the number of interrogations of the ground
Summary of Operational Description
• The BXT65 series is continuously monitoring incoming RF signals at frequency of
1030 MHz for radar interrogations.
• When an interrogation is detected and dec od ed, the tr a nspond er proces s es it and
generates a reply which is transmitted at radio frequency of 1090 MHz.
• Transponder replies allow an ATC ground station to locate, identify and track an aircraft.
• With use of interrogations and replies it is also possible to send data to and from an
aircraft.
• The device provides transponder functionality for Mode A/C and Mode S operation.
• The BXT65 series periodically transmits squitter, which are transmitted independent on
interrogations from ground stations.
Two types of squitter are generated:
• An acquisition squitter carries 56-bit data allowing acquisition of the aircraft is transmitted
approximately once per second.
• Extended squitter carries 112 bits of data and are used by ADS-B transmitter function.
station
22 BXT6500 Series DV15104.3 Issue 06 September 2018
Becker Avionics
General Description
1.6 Safety-Conscious Utilization
The device(s) may be installed on an aircraft only by an approved aeronautical
Excessive pulses on the DC bus of the aircraft may cause damage on electrical
It is the responsibility of the installer to ensure the ADS-B Out system is
For safe operation of the product the following notes have to be observed:
company (e.g. EASA Part 145) which shall also examine and verify the
installation.
• The installation of the BXT65 series into an aircraft may be carried out only
by an authorized installation company. The country regulations always have
to be observed.
• Use the product only within the specified conditions, see "Technical Data"
page 24.
• C irc uit breaker:
o Use the recommended fuses in the power line to protect the
application, see "T ec hnica l Data", page 24.
circuits of any installed instrument.
compliant with current national regulations e.g. AC 20-165B and to ensure
compatibility between the BXT65 series and the ADS-B Out position source
equipment.
Restriction for Use
1.7 Restriction for Use
• BXT65 series is to be used inside the declared limits.
DV15104.3 Issue 06 September 2018 BXT6500 Series 23
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