Aviation Communications and Surveillance Systems NXTXPONDER User Manual
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
Page
Description of Change
All
All pages have been revised to indicate the latest revision and revision date.
All pages have been reviewed for spelling and grammar changes. ATA numbers
have been changed from 23-80-02 to 34-52-13.
Removed reference to JAA LEAFLET NO 13, added compliance statement for
CS-ACNS Subpart D. Removed second paragraph referring to A718A-4.
1-2
Added BDS 6,1, BDS 6,2 and BDS 6,5 to the DF17 Extended Squ itt er s list.
1-3
Added Operational and XIC FPGA part numbers to Table 1-2.
Added K. Failure Classifica tions des c ript ion and T able 1-5. All other tables
incremented up.
1-11
Updated first paragraph in section 5. A.
1-13
Table 1-6 added information to Power Consumption Specifications.
Table 1-7 Changed Section 13 Category from X to F and add reference to
to analysis document.
Updated Figure 1-7 and de sc r iption belo w to inclu de B DS 6,1, BDS 6,2 and BDS
6,5.
1-37, 1-39
Table 1-15 and 1-16, updated description for Bits 38-46.
1-40
Table 1-17 updated to remove references to legacy product.
1-47 thru 1-51
Added Tables 1-24 thru 1-27. All others incremented up.
4-6
Updated J1-42/43 in Table 4-1 to remove reference to legacy product.
4-9
Updated J1-59 in Table 4-1 to add a note for clarification.
4-19
Updated description for (2), removed lines that were not used in Table 4-7.
6-7
Updated Table 6-2 to include Control L350 BIT/FAULT Codes.
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
TO HOLDERS OF SYSTEM DESCRIPTION AND INSTALLATION MANUAL, PUB. NO 8600600-001, DATED 03 FEB 2014, NXT-600 MODE S/ ADS-B TRANSPONDER
REVISION 001 DATED 26 MAR 2014
HIGHLIGHTS
This revision replaces all of the pages in the manual. All pages have a new date and pages with changed
data are identified in the List of Effective Pages. Pages with changed data are identified with revision
bars. Replace all pages in this document and discard all previous pages.
All
1-1
1-4 Updated wording of Deviation 2 in Table 1-3.
1-6 Added F. GPS Interface description. All other letters incremented up.
1-8, 1-9
1-16
1-32, 1-33
4-20 Updated description for (4).
4-27 Added Table 4-20, all others incremented up.
4-28 thru 4-29 Updated Table 4-21 and Figure 4-1.
analysis document. Section 22 added Category A4. Section 26 added reference
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System Description and Installation
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SYSTEM DESCRIPTION AND INSTALLATION MANUAL
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PROPRIETARY NOTICE
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nor the information contained herein shall be used, reproduced, or disclosed to others without the written
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Subject
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
Table of Contents
Page
INTRODUCTION ............................................................................................................................... INTRO-1
1. Proprietary, Export, and Precautionary Data ......................................................................... INTRO-1
A Proprietary Notice ........................................................................................................... INTRO-1
B Export Notice ................................................................................................................... INTRO-1
C Special Precautions ........................................................................................................ INTRO-1
2. Content Data .......................................................................................................................... INTRO-2
A How to Use This Manual ................................................................................................. INTRO-2
B Export Notice ................................................................................................................... INTRO-3
C Special Precautions ........................................................................................................ INTRO-3
3. Customer Assistance ............................................................................................................. INTRO-5
A Whom to Contact ............................................................................................................ INTRO-5
SYSTEM DESCRIPTION ........................................................................................................................... 1-1
1. General ........................................................................................................................................... 1-1
2. System Components ...................................................................................................................... 1-2
3. System Description ......................................................................................................................... 1-4
A. Radio Frequency (RF) Transmitter and Receiver .................................................................... 1-5
B. TCAS ll Interface ...................................................................................................................... 1-5
C. ADLP Interface, ADLP Function and Transponder Level ........................................................ 1-6
D. A ltimeter Interface .................................................................................................................... 1-6
E. Controller Interface ................................................................................................................... 1-6
F. Discrete Interfaces and Configuration Interfaces ..................................................................... 1-6
G. Built-In Test Functions ............................................................................................................. 1-8
H. RS-232 Data Loader Interface ................................................................................................. 1-8
I. Navigation Data ARINC 429 Interfaces ................................................................................... 1-8
J. Navigation Data ARINC 429 Interfaces ................................................................................... 1-8
K. Reserved I/O for Future Features ............................................................................................ 1-8
L. Failure Classifications .............................................................................................................. 1-8
4. General Description ........................................................................................................................ 1-9
A. Purpose of System ................................................................................................................... 1-9
5. Component Descriptions .............................................................................................................. 1-11
A. NXT-600 Mode S/ADS-B Transponder .................................................................................. 1-11
B. NXT-600 Front Panel Description .......................................................................................... 1-17
C. ACSS Control Panel Figure ................................................................................................... 1-18
D. Gables Dual Mode and Control Panel Figures ...................................................................... 1-19
6. Functional Description and Operation .......................................................................................... 1-22
A. Functional Operation .............................................................................................................. 1-22
B. Mode S/ATCRBS Interrogations and Replies ........................................................................ 1-24
C. Mode S ELS/EHS and ADS-B OUT ....................................................................................... 1-30
D. Mode S Message Format and Data Field Definition .............................................................. 1-51
7. System Software Upload/Fault Log Download ............................................................................. 1-54
A. Software Program Description and Configuration ................................................................. 1-54
B. WebEDDIT Interface Description ........................................................................................... 1-55
8. Software Data Uploading and Part Number Verification Procedures ........................................... 1-56
A. Software Loading Using a Stand-Alone PC with WebEDDIT ................................................ 1-56
B. Software Verification Using a Stand-Alone PC with WebEDDIT ........................................... 1-57
9. Fault Log Downloading Procedures ............................................................................................. 1-58
A. Fault Log Downloading Using a Stand-Alo ne PC with WebEDDIT ....................................... 1-58
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SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
10. Mode S/ADS-B Configuration Verification Procedures ................................................................ 1-58
A. Configuration Verification Using a Stand-Alone PC with W ebEDDIT .................................... 1-58
MECHANICAL INSTALLATION ................................................................................................................. 2-1
1. General ............................................................................................................................................. 2-1
2. Equipment and Materials .................................................................................................................. 2-1
3. Mechanical Installation Design ....................................................................................................... 2-1
A. Transponder Provisions ........................................................................................................... 2-1
B. Controller Provisions ................................................................................................................ 2-9
C. Transponder Antenna Provisions ........................................................................................... 2-13
D. Antenna Coaxial Cable Requirements ................................................................................... 2-13
E. Strap Assembly ...................................................................................................................... 2-14
ELECTRICAL INSTALLATION .................................................................................................................. 3-1
1. General ........................................................................................................................................... 3-1
2. Equipment and Materials ................................................................................................................ 3-1
3. Electrical Installation Procedure ..................................................................................................... 3-1
4. Electrical Installation ....................................................................................................................... 3-1
A. NXT-600 Mode S/ADS-B Transponder .................................................................................... 3-1
B. Control Panel ........................................................................................................................... 3-7
C. ATC Antennas .......................................................................................................................... 3-9
LOADING/GRADIENT SPECIFICATIONS ................................................................................................ 4-1
1. General ........................................................................................................................................... 4-1
2. Loading and Gradient Specifications .............................................................................................. 4-1
3. Mode S/ADS-B OUT Configuration Data...................................................................................... 4-16
A. Configuration Data Program Pin Strapping ............................................................................ 4-17
B. Configuration Data Program Pin States ................................................................................. 4-18
C. Configuration Data Program Inputs Parity Check .................................................................. 4-19
D. Configuration Data Discrete Decoding ................................................................................... 4-19
ADJUSTMENT/TEST ................................................................................................................................. 5-1
1. General ........................................................................................................................................... 5-1
2. Equipment and Materials ................................................................................................................ 5-1
3. Initial Harness Checkout (New Installations Only) ......................................................................... 5-1
A. Transponder and Control Panel Harness Checkout ................................................................ 5-1
B. LRU Pre-installation Power Check ........................................................................................... 5-1
C. Initial System Installation Operational Test .............................................................................. 5-2
4. Transponder Self-Test .................................................................................................................... 5-2
5. Return-To-Service .......................................................................................................................... 5-3
FAULT ISOLATION .................................................................................................................................... 6-1
1. General ........................................................................................................................................... 6-1
2. Equipment ....................................................................................................................................... 6-1
3. Monitor Fault Logging ..................................................................................................................... 6-1
4. Power-On Test ................................................................................................................................ 6-1
5. Self-Test Monitor ............................................................................................................................ 6-1
A. Self-Test Initiation from Test Button ......................................................................................... 6-4
B. Front Panel Lamp Display ........................................................................................................ 6-4
6. Continuous Performance Monitor ................................................................................................... 6-5
A. Fault Indicati ons ....................................................................................................................... 6-6
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SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
Subject Page
MAINTENANCE PRACTICES ................................................................................................................... 7-1
1. General ........................................................................................................................................... 7-1
2. Equipment and Materials ................................................................................................................ 7-1
3. Procedure for the NXT-600 Mode S/ADS-B Transponder ............................................................. 7-1
A. Removal and Installation Procedure ........................................................................................ 7-1
B. Adjustment Procedure .............................................................................................................. 7-2
C. Repair Procedure ..................................................................................................................... 7-2
D. Return to Service Procedures .................................................................................................. 7-2
4. Procedure for the Omnidirectional Antenna ................................................................................... 7-2
A. Removal and Installation Procedure ........................................................................................ 7-2
B. Adjustment Procedure .............................................................................................................. 7-3
C. Repair Procedure ..................................................................................................................... 7-3
D. Return to Service ..................................................................................................................... 7-3
5. Procedure for the Control Panel ..................................................................................................... 7-3
A. Removal and Installation Procedure ........................................................................................ 7-3
B. Adjustment Procedure .............................................................................................................. 7-4
C. Repair Procedure ..................................................................................................................... 7-4
D. Return to Service Procedures .................................................................................................. 7-4
6. Instruction for Continued Airworthiness, CFR Part 25.1529 ............................................................ 7-4
INSPECTION/CHECK ................................................................................................................................ 8-1
1. General ........................................................................................................................................... 8-1
2. Procedure ....................................................................................................................................... 8-1
A. Check Transponder .................................................................................................................. 8-1
B. Check Antenna ......................................................................................................................... 8-1
C. Check Control Panel ................................................................................................................ 8-1
CLEANING/PAINTING ............................................................................................................................... 9-1
1. General ........................................................................................................................................... 9-1
2. Equipment and Materials ................................................................................................................ 9-1
3. Cleaning .......................................................................................................................................... 9-2
A. Clean Transponder and Mounting Tray ................................................................................... 9-2
B. Clean Antenna ......................................................................................................................... 9-2
C. Clean Control Panel ................................................................................................................. 9-2
4. Painting ........................................................................................................................................... 9-2
REPAIRS.................................................................................................................................................. 10-1
1. General ......................................................................................................................................... 10-1
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Figure
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
List of Illustrations
Page
Figure 1-1: NXT-600 System Configuration ............................................................................................... 1-5
Figure 1-2: Basic Mode S System Interc onnect ion .................................................................................. 1-10
Figure 1-3: Switch Transponder Ante nnas .............................................................................................. 1-11
Figure 1-4: NXT-600 Mode S/ADS-B Transponder ................................................................................. 1-12
Figure 1-5: NXT-600 Front Panel ............................................................................................................. 1-17
Figure 1-6: Gables G7130 Series Control Panel ..................................................................................... 1-18
Figure 1-7: NXT-600 Transponder DAPS Data Processing .................................................................... 1-32
Figure 2-1: (Sheet 1): NXT-600 Mode S Transponder Outline and Installation Diagram .......................... 2-3
Figure 2-2: ACSS Control Panel (Dual Mode S Outline and Installation Diagram) ................................. 2-11
Figure 4-1: Example of Configuration Encoding Pinout (N6754H) .......................................................... 4-29
Figure 6-1: NXT-600 Transponder Front Panel ......................................................................................... 6-2
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Table
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
List of Tables
Page
Table INTRO-1: Related Publications ............................................................................................... INTRO-2
Table INTRO-2: Acronyms and Abbreviations .................................................................................. INTRO-3
Table 1-1: NXT-600 Configurations ........................................................................................................... 1-3
Table 1-2: NXT-600 Unit Configurations .................................................................................................... 1-3
Table 1-3: NXT-600 Unit Dev iat ion Notes .................................................................................................. 1-4
Table 1-4: Control Panel Configurations .................................................................................................... 1-4
Table 1-5: NXT-600 Failure Classifications ............................................................................................... 1-9
Table 1-6: NXT-600 Mode S/ADS-B Transponder Leading Particulars .................................................. 1-13
Table 1-7 NXT-600 Transponder DO-160G Categories .......................................................................... 1-16
Table 1-8: Front Panel Lamp Definition ................................................................................................... 1-18
Table 1-9: Gables G7130 Control Panel Leading Particulars .................................................................. 1-19
Table 1-10: Typical ATCRBS Reply Code Numbers ............................................................................... 1-25
Table 1-11: BDS 0,5 Airbor ne Pos it ion .................................................................................................... 1-34
Table 1-12: BDS 0,6 Surface Pos ition ..................................................................................................... 1-35
Table 1-13: BDS 0,7 Status ..................................................................................................................... 1-36
Table 1-14: BDS 0,8 Aircraft ID and Category ......................................................................................... 1-36
Table 1-15: BDS 0,9 Airborne Velocity Subtypes 1 & 2 – Velocity Over Ground .................................... 1-37
Table 1-16: BDS 0,9 Airborne Velocity Subtypes 3 & 4 – Airspeed and Heading ................................... 1-38
Table 1-17: BDS 1,0 Data Link Capability ............................................................................................... 1-39
Table 1-18: BDS 1,7 Common Usage GICB Capability ........................................................................... 1-41
Table 1-19: BDS 2,0 Aircraft Identif ic at ion ............................................................................................... 1-43
Table 1-20: BDS 3,0 ACAS Active Res ol uti on Ad visory .......................................................................... 1-44
Table 1-21: BDS 4,0 Selected Vertical Intent .......................................................................................... 1-45
Table 1-22: BDS 5,0 Track and Turn ....................................................................................................... 1-46
Table 1-23: BDS 6,0 Heading and Speed ................................................................................................ 1-47
Table 1-24: BDS 6,1 Extended Squitter, Emergency/Priority Status ....................................................... 1-47
Table 1-25: BDS 6,2 Ext en ded Squ itt er, T arget State and Stat us ........................................................... 1-48
Table 1-26: BDS 6,5 Extended Squitter, Aircraft Oper ation al Status , Airb or ne ....................................... 1-49
Table 1-27: BDS 6,5 Extended Squitter, Aircraft Operational Status, Surface ........................................ 1-50
Table 1-28: Uplink Format Messages ...................................................................................................... 1-51
Table 1-29: Downlink Format Messages ................................................................................................. 1-52
Table 1-30: Uplink Format Fields ............................................................................................................. 1-52
Table 1-31: Downlink Format Fields ........................................................................................................ 1-53
Table 1-32: WebEDDIT User Commands ................................................................................................ 1-55
Table 3-1: NXT-600 Mode S/ADS-B Transponder Interconnect Data ....................................................... 3-3
Table 3-2: Gables G7130-XX ATC/TCAS Control Panel Interconnect Data ............................................. 3-7
Table 4-1: NXT-600 Mode S/ADS-B Transponder Loading/Gradient Specifications ................................ 4-1
Table 4-2 Gables ATC/TCAS Control Panel Interface Description.......................................................... 4-13
Table 4-3: Mode S Configuration Data Program Inputs ........................................................................... 4-17
Table 4-4: ADS-B OUT Configuration Data Program Inputs ................................................................... 4-18
Table 4-5: Configuration Data Program Outputs ..................................................................................... 4-18
Table 4-6: SDI Encoding .......................................................................................................................... 4-19
Table 4-7: Baro Correction Type/Alt Source ............................................................................................ 4-19
Table 4-8: Max True Airspeed (TAS) ....................................................................................................... 4-20
Table 4-9: Mode S Address ..................................................................................................................... 4-20
Table 4-10: Antenna Cable Delay ............................................................................................................ 4-21
Table 4-11: Antenna BIT E/ RMS 555 /G AM A ............................................................................................ 4-21
Table 4-12: Aircraft/Vehicle Length/Width Encoding ............................................................................... 4-22
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Table
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
Page
Table 4-13: Antenna Longitudinal Offset Encoding ................................................................................. 4-23
Table 4-14: Navigation Accuracy Category for Velocity (NAC
Table 4-15: System Design Assurance (SDA) Encoding ......................................................................... 4-25
Table 4-16: ADS-B OUT Fail Disable Encoding ...................................................................................... 4-25
Table 4-17: Aircraft Category Encoding ................................................................................................... 4-26
Table 4-18: ADS-B Receive Capability Encoding .................................................................................... 4-26
Table 4-19: Vertical Figure of Merit (VFOM) Adjust Encoding ................................................................. 4-27
Table 4-20: Configurat ion Setti ng Parity Encoding .................................................................................. 4-27
Table 4-21: Example of Configuration Encoding (N6754H) ..................................................................... 4-28
Table 5-1: Equipment and Mater ials .......................................................................................................... 5-1
Table 6-1: Interface/LRU Possible Corrective Actions ............................................................................... 6-3
Table 6-2: XPDR Failure Indications .......................................................................................................... 6-7
Table 9-1: Equipment and Mater ials .......................................................................................................... 9-1
Table 10-1: ACSS Component Maintenance Manual Reference ............................................................ 10-1
) Encoding ............................................. 4-24
V
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SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
INTRODUCTION
1. Proprietary, Export, and Precautionary Data
A Proprietary Notice
(1) This document and the information disclosed herein are proprietary data of
ACSS. Neither this document nor the information contained herein shall be
used, reproduced, or disclosed to others without written authorization of ACSS,
except to the extent required for installation or maintenance of the recipient’s
equipment.
FREEDOM OF INFORMATION ACT (5 USC 552) AND DISCLOSURE OF
CONFIDENTIAL INFORMATION GENERALLY (18 USC 1905).
(2) This document is being furnished in confidence by ACSS. The information
disclosed herein falls within exemption (b) (4) of 5 USC 552 and the prohibitions
of 18 USC 1905. Cop yright 2014 ACSS. All Rights Reserved.
(3) ACSS is a U.S. registered trademark of ACSS. All other marks are owned by
their respective companies.
B Export Notice
(1) This document contains unrestricted technical data and is being exported under
license exception TSU/OTS in accordance with EAR Section 740.13(a).
(2) These commodities, technology, or software were exported from the United
States in accordance with the export administration regulations. Diversion
contrary to U.S. law is prohibited. ECCN: 7E994 Schedule B#490 1.99.0050.
C Special Precautions
(1) Warnings, cautions, and notes in this manual give the data that follows:
• A WARNING is an operation or maintenance procedure or condition that, if
not obeyed, can cause injury or death.
• A CAUTION is an operation o r maintenance procedure or condition that, if
not obeyed, can cause damage to the equipment.
• A NOTE gives data to make the work easier or gives directions to go to a
procedure.
(2) All personnel who operate equipment and do maintenance specified in this
manual must know and obey the safety precautions. The warnings and cautions
that follow apply to all parts of this manual.
Pub. No. 8600600-001, Revision 001
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34-52-13
INTRO-1
26 Mar 2014
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
Publication
Publication No.
Handling, Storage, and Shippi ng Proc edur es
Instruction Manual for ACSS Avionics Equipment
A09-1100-001
NOTES:
For publications please visit www.acsscustomerservices.com
WARNING: BEFO RE YO U USE A MATERIAL, REFER TO THE
CAUTION: DO NOT USE MATERI ALS THAT ARE NOT EQ UIVALEN T TO
CAUTION: THE MODE S TRANSPONDER SYSTEM CONTAINS ITEMS THAT
2. Content Data
A How to Use This Manual
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
MANUFACTURERS’ MATERIAL SAF ETY DATA SHEETS FOR
SAFETY INFORMATION. SOME M ATER IALS CAN BE DANGEROUS.
MATERIALS SPECIFIED BY ACSS. MATERIALS THAT ARE NOT
EQUIVALENT CAN CAUSE DAMAGE TO THE EQUIPMENT AND CAN
VOID WARRANTY.
ARE ELECTROSTATIC DISCHARGE SENSITIVE ( ESDS). IF YOU DO
NOT OBEY THE NECESSARY CONTROLS, A FAILURE OR
UNSATISFACTORY OPERATION OF THE UNIT CAN OCCUR FROM
ELECTROSTATIC DISCHARGE. USE APPROVED INDUSTRY
PRECAUTIONS TO KEEP THE RISK OF DAMAGE TO A MINIMUM
WHEN YOU TOUCH, REMOVE, OR INSERT PARTS OR ASSEMBLIES.
(1) This manual gives general system desc ription and inst all ati on inf ormation for the
NXT-600 Mode S/ADS-B Transponder System. It also gives block diagram and
interconnect information to permit a general understanding of the overall system.
(2) The purpose of this manual is to help you install, operate, maintain, and
troubleshoot the transponder in the aircraft. Common system maintenance
procedures are not presented in this manual. The best established shop and
flight line practices should be used.
(3) Related publications that are referred to in this manual are identified in Table
INTRO-1.
Table INTRO-1: Related Publications
1. You can order an ACSS Publication from ACSS as follows:
Telephone No. 623-445-7040
Fax No. 623-445-7004
INTRO-2
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Pub. No. 8600600-001, Revision 001
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
Term
Definition
ABV
Above
AC
Advisory Circular
ac
Alternating Current
ACSS
Aviation Communication & Surveillance S yst ems
ADLP
Airborne Data Link Processor
ALT
Altitude
ADS-B
Automatic Dependent Surveillance-Broadcast
ANSI
American National Standards Institute
ARINC
Aeronautical Radio, Incorporated
ASCII
American Standard Code for Information Interchange
ATC
Air Traffic Control
ATCRBS
Air Traffic Control Radar Beacon System
AUTO
Automatic
AWG
American Wire Gauge
BIT
Built-In Test
BITE
Built-In Test Equipment
BLW
Below
CFR
Code of Federal Regulations
CRC
Cyclic Redundancy Code
CS-ACNS
Certification Specific atio n-Airborne Communications, Navigation, and
Surveillance
DADS
Digital Air Data System
DAPS
Downlink of Aircraft Parameters
dc
Direct Current
DF
Downlink Format
DLP
Data Link Processor
DPSK
Digital Phase Shift Keying
E/W
East/West
EAR
Export Administration Regulations
EASA
European Aviation Safety Agency
ELM
Extended Length Message
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
B Weights and Measurements
(1) All weights and measurements are in U.S. and S. I. (metric) values.
(2) The letter symbols for units of measurement are the same as shown in
ANSI/IEEE Std 260.
C Acronyms and Abbreviations
(1) The acronyms and abbreviations that follow help the reader identify terms and
definitions used in this document.
(2) The letter symbols for units of measurement are the same as shown in
ANSI/IEEE Std 260.
Table INTRO-2: Acronyms and Abbreviations
Pub. No. 8600600-001, Revision 001
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INTRO-3
26 Mar 2014
Term
Definition
ELS/EHS
Elementary and Enha nc ed Surv eill anc e
ERR
Error
ESDS
Electrostatic Discharge Sensitive
ETSO
European Technical Standard Order
FAA
Federal Aviation Administration
FL
Flight Level
FMS
Flight Management System
GICB
Ground Initiated Comm-B
GND
Ground
GNSS
Global Navigation Satellite System
HAE
Height Above Ellipsoid
HIL
Horizontal Integrity Limit
HPL
Horizontal Protection Limit
ICAO
International Civil Aviation O r ganizat io n
ID, IDENT
Identification
IEEE
Institute of Electrical and Electronic Engineers
IPC
Illustrated Parts Catalog
kts
Knots
LCD
Liquid Crystal Display
LRU
Line Replaceable Unit
MAN
Manual
MCP
Mode Control Panel
MEL
Minimum Equipment List
MSL
Mean Sea Level
MTL
Minimum Trigger Level
N/A
Not Available
N/S
North/South
NACV
Navigation Accuracy Category for Velocity
NAV
Navigation
NIC
Navigation Integrity Category
NM
Nautical Mile
NXT
NXT Mode S/ADS-B Transponder
OTS
Organized Track System
PAM
Pulse Amplitude Modulation
PAST
Pilot-Activated Self-Test
PN
Part Number
PPM
Pulse Position Modulati on
PWR
Power
RA
Resolution Advisor y
RF
Radio Frequency
RMU
Radio Management Unit
RPTG
Reporting
RTCA
Radio Technical Commission for Aeronautics, Inc
RTN
Return
S.I.
International System of Units
SDA
System Design Assurance
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
Table INTRO-2: Acronyms and Abbreviations
INTRO-4
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Term
Definition
SDI
Source Destination Identifier
SEL
Select
SIL
Source Integrity Level
SLS
Side Lobe Suppression
SPI
Special Position Identifier
SPR
Sync Phase Reversal
SRC
Source
STBY
Standby
TA
Traffic Advisory
TCAS
Traffic Alert and Collision Avoida nc e System
TSO
Technical Standard Order
TSU
Technical Services Unit
TST
Test
UAT
Universal Access Transceiver
UELM
Uplink Extended Length Message
UF
Uplink Format
UTC
Coordinated Universal Time
VFOM
Vertical Figure of Merit
VSWR
Voltage Standing Wave Ratio
WGS-84
World Geodetic System 1984
XPDR
Transponder
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
Table INTRO-2: Acronyms and Abbreviations
3. Customer Assistance
For assistance with installation, operation or maintenance of the transponder, contact your local
ACSS Dealer or ACSS Customer Services Representative. Additional assistance can be
obtained from:
ACSS
19810 N. 7
Phoenix, AZ. 85027-4741
Tel: 623-445-7070
Fax: 623-445-7001
th
Ave.
Pub. No. 8600600-001, Revision 001
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SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
Blank Page
INTRO-6
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1. General
The NXT-600 Mode S/AD S -B Transponder supplies surveillance functions to both ground-based
and airborne interrogators and communication functions to onboard systems. The transponder
contains data link functions that allow it to function as part of the Aeronautical
Telecommunications Network (ATN). The data link functions allow communication with a
Communication Management Unit (CMU) through a Mode S Airborne Data Link Processor
(ADLP). The transponder replies to Air Traffic Control (ATC) Secondary Surveillance Radar
(SSR) ground based interrogations with Mode 3/A (aircraft identification or 4096 code) and Mode
C (barometric altitude reporting). The transponder also contains Mode S specific transmissions,
which are selective interrog ations and replies directly to onboard systems with a unique 24-bit
code (Mode S address) assigned to each aircraft. The transponder can be upgraded to supply an
internal ADLP function.
The NXT-600 Transponder is compliant with the applicable requirements in EASA CS-ACNS
Subpart D initial issue 17 December 2013.
ELS Reports:
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
SYSTEM DESCRIPTION
• Data Link Capability (BDS 1,0)
• GICB (BDS 1,7)
• Flight Identification (BDS 2,0)
• ACAS Active Resolution Advisory (BDS 3,0).
EHS Reports:
• Aircraft Intent (BDS 4,0)
• Track and Turn (BDS 5,0)
• Speed and Heading (BDS 6,0).
The NXT-600 Tr ansponder also pro v ides Aut omatic Dependent Surveillance-Broadcast (ADS-B)
“OUT” support using the Mode S DF17 Extended Squitter. This is a function for airborne and
surface aircraft which transmits horizontal and vertical position and velocity as well as other
pertinent surveillance information. The NXT-600 Transponder wi ll autom at ical ly transmit DF17
information based on onboard navigation sensors with or without an interrogation from a ground
station or aircraft.
The FAA Final Rule for Automatic Dependent Surveillance–Broadcast (ADS-B) OUT, effective on
August 11, 2010, adds requirements for aircraft operating in the following areas of the National
Airspace System (NAS) to meet 14 CFR Part 91.225 by Januar y 01, 2020:
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1-1
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SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
• Class A, B, and C
• Class E within the 48 contiguous states and the District of Columbia at and above 10,000 feet
MSL, excluding the airspace at and below 2,500 feet above the surface.
• Class E airspace at and above 3,000 feet MSL over the Gulf of Mexico from the coastline of
the United States out to 12 nautical miles.
• Around those airports identified in 14 CFR Part 91, Appendix D.
A set of specific aircraft parameters are required in order for the transponder to transmit correct
Mode S Extended Squitters. Refer to SYSTEM DESCRIPTION Section for Mode S, ELS/EHS,
and ADS-B OUT for a list of required inputs. ARINC 718A-4 defines a method to strobe
transponder inputs for DO-260B compliant units in order to set values and thresholds for the
required parameters. Refer to Section 4 Loading/Gradient Specifications for more information.
DF17 Extended Squitter Reports :
• Airborne Position (BDS 0,5)
• Surface Position (BDS 0,6)
• Extended Squitter Status (BDS 0,7)
• Identity and Category (BDS 0,8)
• Airborne Ve locity (BDS 0,9)
• Emer gency/Priority Status (BDS 6,1)
• Target State and Status (BDS 6,2)
• Aircraft Operational Status, Airborne (BDS 6,5)
• Aircraft Operational Status, Surface (BDS 6,5).
ADS-B functionality supports improved use of airspace, improved surface surveillance, and
enhanced safety.
2. System Components
Table 1-1: NXT-600 Configurations and Table 1-4: Control Panel Configurations give the
components that are necessary to do an installation and are either supplied by ACSS or are
available from the manufacturer.
1-2
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Components
Model
ACSS Part No.
Mode S/ADS-B Out Transponder
NXT-600
9006000-55YYY
1
NXT-600 Tray Assembly
MT-600
9516000-001
Tray Connector Kit (Contains 106-pin ARINC 404
mating connector and required hardware)
7510359-910
Components
Comments
Gables G7130 Series ATC/TCAS Dual Transponder
Control Panel
.
General aviation type controller that operates
from +28 V dc aircraft power
.
Omnidirectional ATC Antennas4.
ATC blade antenna, dc shorted, TSO-C112
supply antennas.
NOTES:
4. A diversity transponder installation requires both a top and bottom ATC antenna.
Transponder
Identification
Applicable TSO/ETSO
& Deviations
NXT Release 1
This Transponder operates
PN 9008060-001
TSO-C112d –
Level 3adens Class 1
NOTE: For deviations refer to Table 1-3.
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
Table 1-1: NXT-600 Configurations
2
compliant, 1030 to 1090 MHz. Installer to
1. The part number for the NXT-600 Mode S/ADS-B Transponder is 9006000-55YYY, where
the five digit dash number corresponds to the hardware/software version. The last three digits
of the five digit dash number (YYY) correspond to the unit software version.
2. Refer to Table 1-4 for individual part number descriptions.
3. For additional information, pricing, and availability contact:
Gables Engineering, Inc., 247 Greco Avenue, Coral Gables, Florida 33146
Telephone: (305) 774-4400
Fax: (305) 774-4465
Table 1-2: NXT-600 Unit Configurations
Description
Model NXT-600
PN 9006000-55000
from 28 V dc aircraft power.
Operational Software –
PN 9002000-001
XIC FPGA Firmware –
Deviation 2
TSO-C166b –
Deviations 1 and 2
Class A3 - Transmit
Only
3
Level/Class
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1-3
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manual instead of on the article.
±78MHz) due to emissions in these bands approaching the specified limits.
Control Panel
Part Number
Description
Gables Control Panels
G7130-02
Control Panel, Dual Mode S/TCAS, Rotary knob 4096 code entry,
Black Bezel, Operates from +28 V dc aircraft power
G7130-05
Control Panel, Dual Mode S/TCAS, Rotary knob 4096 code entry,
Gray Bezel, Operates from +28 V dc aircraft power
G7130-06
Control Panel, Dual Mode S/TCAS, Rotary knob 4096 code entry,
dc aircraft power
G7130-07
Control Panel, Dual Mode S/TCAS, Rotary knob 4096 code entry,
dc aircraft power
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
NXT-600 Mode S/ADS-B Transponder/Part No. 9006000
Table 1-3: NXT-600 Unit Deviation Notes
Deviation 1: TSO-C166b, Section 4(a)(b)(e) part marking.
This deviation is in regards to the part marking requirements of TSO-C166b, Sections 4(a), 4(b) and
4(e). This deviation allows these specific TSO-C166b part marking details to be listed in this installation
Deviation 2: TSO-C112d and TSO-C166b: DO-160G 21.5 Radiated RF Emissions
The NXT-600 Processor has a high power RF transmitter which is used to generate the 1090 MHz
waveforms required to perform the Mode S Transponder and ADS-B OUT functions. Due to the high RF
power requirement and inherent non-linearity in RF transmitters, three of the harmonics of the
transmitter exceed the RF radiated emissions limit in DO-160G Category M. The NXT-600 exceeds the
Category M Radiated RF Emissions by the indicated levels in the following frequency bands when the
transmitter is active:
2180MHz ± 78MHz (2nd Transmitter Harmonic) Exceeds Cat M limits by 27dB
4360MHz ± 78MHz (4th Transmitter Harmonic) Exceeds Cat M limits by 5dB
5450MHz ± 78MHz (5th Transmitter Harmonic) Exceeds Cat M limits by 10dB
The avionics installer must conduct the appropriate testing required to ensure that other aircraft systems
are not adversely affected in the above frequency bands when the NXT-600 transmitter is active.
Although the NXT-600 does not exceed the Category M limits at any other frequency, the installer
should also conduct non-interference testing in the 3rd transponder harmonic frequency band (3270
3. System Description
System description gives a general overview and summary of the features and interfaces that the
NXT-600 Transponder implements. Figure 1-1 shows a block diagram of the NXT-600
Transponder as part of an installed aircraft system.
Table 1-4: Control Panel Configurations
Black Bezel, Extended Range (80, 120 NM), Operates from +28 V
Gray Bezel, Extended Range (80, 120 NM), Operates from +28 V
1-4
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