COBHAM HGA-6000 User manual

Form #: 875-A0064
HGA-6000 High Gain Antenna
Installation Manual
Document number : 862-A0059_IM
Issue : 1.7
Date : 08 Oct 2015
Filename :
862-A0059_IM_ISS1.7 (HGA-6000 INSTALLATION MANUAL).DOCX

HGA-6000 High Gain Antenna
Installation Manual
Document: 862-A0059_IM issue 1.7 COMPANY CONFIDENTIAL
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The following general safety precautions must be observed during all phases of operation, service
and repair of this equipment. Failure to comply with these precautions or with specific warnings in
this manual may violate the safety standards of design, manufacture and intended use of the
equipment.
RADIATION WARNING
During transmission this system can radiate microwave power from the antenna unit in any
direction. High levels of radio frequency radiation are considered harmful to health. Although all
countries have not agreed upon a single value, the American National Standards Institute
(ANSI/IEEE C95.1-1999) recommends that any person in a controlled environment should not be
exposed to radiation stronger than 5mW/cm2at the frequencies used in this system. Accordingly,
the operator of the system should ensure that no person should approach within 6.6 feet (2
metres) of the antenna when the system is transmitting, unless adequate screening is provided.
Despite this warning, specific system configurations may have a much shorter safe distance. This is
dependent on factors like the number of channels used, the use of cooperative channels etc.
Should shorter safe distances be a requirement in a specific application, please contact Cobham or
the manufacturer of the SDU equipment.
SAFETY WARNING

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TABLE OF CONTENTS
PAGE
1.SCOPE.......................................................................................................................7
2.APPLICABLE DOCUMENTS........................................................................................7
3.EQUIPMENT DESCRIPTION......................................................................................8
3.1SYSTEM OVERVIEW....................................................................................................8
3.2HGA-6000 HIGH GAIN ANTENNAS.....................................................................................9
3.2.1  HGA-6000 Outline Drawings................................................................................ 10 
3.2.2  HGA-6000 Technical Specifications...................................................................... 14 
3.2.3  HGA-6000 Electrical Interfaces............................................................................ 15 
4.HGA-6000 HIGH GAIN ANTENNA INSTALLATION .................................................18
4.1INSTALLATION OVERVIEW............................................................................................... 18
4.1.1  Equipment required ........................................................................................... 18 
4.1.2  General Electrical Requirements.......................................................................... 19 
4.1.3  Summarized Installation Tasks in Sequence ......................................................... 19 
4.2HGA-6000 INSTALLATION GUIDELINES ............................................................................. 20
4.2.1  Mechanical Fixing............................................................................................... 20 
4.2.2  Antenna Alignment ............................................................................................ 20 
4.2.3  Co-location with other Antennas.......................................................................... 22 
4.2.4  Grounding......................................................................................................... 22 
4.3MOUNTING PROCEDURE................................................................................................. 22
5.HGA-6000 MAINTENANCE, INSPECTION, REPAIR AND SERVICING.....................24
5.1SCHEDULED MAINTENANCE............................................................................................. 24
5.2INSPECTION ............................................................................................................... 24
5.3BUILT-IN TEST LOG ANALYSIS......................................................................................... 25
5.4HGA-6000 REPAIR AND SERVICING.................................................................................. 25
5.5REMOVAL PROCEDURE................................................................................................... 25
5.6WARRANTY SEAL ......................................................................................................... 25
5.7STORAGE AND TRANSPORTATION...................................................................................... 25
6.DISCONTINUED PRODUCTS...................................................................................25
APPENDIX A: EXAMPLES OF INSTALLATION CONFIGURATIONS..............................27
APPENDIX B: ANTENNA SUPPORT SOFTWARE GUIDE ..............................................30

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LIST OF FIGURES PAGE
Figure 1 : Block diagram of HGA-6000 in a SATCOM system........................................................8
Figure 2 : HGA-6000 & Slimline HGA-6000 High Gain Antennas ...................................................9
Figure 3 : HGA-6000 bottom view........................................................................................... 10
Figure 4 : HGA-6000 side view................................................................................................ 11
Figure 5 : Slimline HGA-6000 bottom view............................................................................... 12
Figure 6 : Slimline HGA-6000 side view ................................................................................... 13
Figure 7 : HGA-6000 Alignment marking from the base of antenna............................................ 20
Figure 8 : HGA-6000 Inspection Criteria and Damage Limits...................................................... 24
Figure 9 : Cobham SwiftBroadband System using SRS-7200 AHRS System ................................. 28
Figure 10 : Cobham SwiftBroadband System using IRS System ................................................. 28
Figure 11 : SwiftBroadband SATCOM System using HLD and IRS Navigation System................... 29
Figure 12 : ARINC 741 SATCOM System using IRS Navigation System ....................................... 29
LIST OF TABLES PAGE
Table 1 : HGA-6000 L-Band RF connector................................................................................ 15
Table 2 : HGA-6000 Electrical Interface................................................................................... 16
Table 3 : Standard HGA-6000 Data and power cable connectors................................................ 16
Table 4 : HGA-6000 Equipment Required................................................................................. 18
Table 5 : Test Equipment Required for HGA-6000 system installation......................................... 18
Table 6 : HGA-6000 Inspections and Actions............................................................................ 24
Table 6-1: Discontinued Products............................................................................................ 25
LIST OF APPENDICES PAGE
Appendix A: Examples of Installation Configurations ............................................................ 27
Appendix B: Antenna Support Software Guide ..................................................................... 30

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ACRONYMS
AMO Aircraft Maintenance Organization
ARINC Aeronautical Radio Inc.
AWG American Wire Gauge
BITE Built-in Test Equipment
BSU Beam Steering Unit
dB Decibel
DLNA Duplexer / Low Noise Amplifier
FAA Federal Aviation Administration
GHz Gigahertz
GPS Global Positioning System
HGA High Gain Antenna
HLD High Power Amplifier / Low Noise Amplifier / Duplexer
HPA High Power Amplifier
HSD High Speed Data
IRS Inertial Reference System
kHz Kilohertz
LNA Low Noise Amplifier
MHz Megahertz
PC Personal computer
PIM Passive Intermodulation
RF Radio Frequency
Rx Received signal
SDM System Definition Manual
SDU Satellite Data Unit
Tx Transmitted signal
VSWR Voltage Standing Wave Ratio

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1. SCOPE
1) This Installation Manual provides the installation instruction for the HGA-6000 High Gain Aero
SATCOM Antenna System. The HGA-6000 Antenna System conforms to the Inmarsat SDM for
an Aero-H antenna, and is approved for use with Aero-H/H+, Swift64 and SwiftBroadband
SATCOM Systems.
2) The Slimline HGA-6000 antenna is the same basic antenna with a different dust-cover shape.
Throughout this manual, the two antennas can be considered to be the same other than when
specifically detailed.
3) This document does not cover the installation of a complete SATCOM System, which includes
installation of an ARINC 741 compliant Satellite Data Unit (SDU) and its associated peripherals.
This document must be used in conjunction with the appropriate SATCOM equipment
manufacturer’s installation manual.
4) Aircraft specific installation details will have to be derived by the installer, using this manual as
a guideline, while adhering to standard aircraft practices.
2. APPLICABLE DOCUMENTS
[1] ARINC Characteristics 741P1-9 Aviation Satellite Communications System
[2] RTCA DO-160D (including changes 1, 2 and 3), Environmental Conditions and Test
Procedures for Airborne Equipment
[3] ARINC 429 Parts 1, 2 & 3, ‘Mark 33 Digital Information Transfer System’
[4] Inmarsat Aeronautical System Definition Manual Module 2: Technical Requirements for
Inmarsat Aircraft Earth stations. Version 1.20.02.

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3. EQUIPMENT DESCRIPTION
3.1 SYSTEM OVERVIEW
1) The purpose of the HGA-6000 Antenna System is to provide an L-band RF link between
Inmarsat Aero-H/H+, Swift64 and SwiftBroadband SATCOM systems and an Inmarsat satellite.
2) The HGA-6000 High Gain Antenna is used together with the following subsystems
interconnected as shown in Figure 1:
a) HGA-6000 High Gain Antenna, Cobham Part Number 677-A0161. Please contact Cobham
for the specific part number variants as these may change based on the product labeling
and customer specific details.
b) Diplexer/LNA (DLNA). Please contact Cobham for part numbers as these may vary based
on the product application.
c) High Power Ampifier (HPA). Please contact Cobham for part numbers as these may vary
based on the product application.
d) Satellite Data Unit (SDU). Please contact Cobham for part numbers as these may vary
based on the product application.
e) HPA/LNA/Diplexer (HLD). This replaces the HPA and DLNA where weight and space is an
issue. Please contact Cobham for part numbers as these may vary based on the product
application.
Figure 1 : Block diagram of HGA-6000 in a SATCOM system

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3.2 HGA-6000 High Gain Antennas
Figure 2 : HGA-6000 & Slimline HGA-6000 High Gain Antennas
The HGA-6000 antenna is intended for use in an airborne satellite communication system, providing
access to the Inmarsat Aero H, H+, Swift64 or SwiftBroadband systems. The antenna complies
with the requirements for an Inmarsat Aero High Gain Antenna as defined in [4].
The only difference between the HGA-6000 and the Slimline HGA-6000 is a reshaped dust-cover
designed to cater for different mounting/space requirements.
The HGA-6000 interfaces to suitable avionics that will provide the required
modulation/demodulation, RF amplification and the correct beam steering commands.
Two interfaces are provided for controlling the antenna: An ARINC 429 Interface and a Coaxial
Modem Interface:
oThe HGA-6000 is capable of interfacing directly to the ARINC 429 interface of an SDU (as
defined in ARINC 741 [1]). In this configuration the antenna will accept the commands
normally intended for a Beam Steering Unit (BSU). This will also allow the antenna to control
the DLNA. This configuration is depicted in Figure 1.
oAlternatively, the co-axial modem interface allows the HGA-6000 to be used in conjunction with
an Cobham Beam Steering Unit or Satellite Data Unit. The drawings in the manual do not show
this method, although block diagrams of the installation option utilizing this interface are given
in Appendix A.

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3.2.1 HGA-6000 Outline Drawings
Figure 3 : HGA-6000 bottom view

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Figure 4 : HGA-6000 side view

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Figure 5 : Slimline HGA-6000 bottom view

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Figure 6 : Slimline HGA-6000 side view

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3.2.2 HGA-6000 Technical Specifications
Dimensions: 10.08” (256 mm) diameter
9.71”
(247 mm) height
Weight: 4.2 lb (1.9 kg) max
Weight with cables: 4.8 lb (2.2 kg) max
Slimline Dimensions: 10.08” (256 mm) diameter
10.08” (256 mm) height
Slimline Weight (with cables): 4.63±0.44lbs (2.10 ± 0.20 kg)
Temperature Range: -85 °F to 158 °F (-65 °C to +70 °C) (operating)
-85 °F to 185 °F (-65 °C to +85 °C) (storage)
Altitude: Up to 70,000 feet
Frequency: 1525 MHz to 1660.5 MHz
Polarization: Right Hand Circular Polarized (RHCP)
Coverage: Seamless hemispherical coverage, compliant to Inmarsat SDM
Gain: 12.7 dBiC (typical, measured with a 15” [380 mm] RG400 pigtail)
Software Qualification: RTCA/DO-178B, Level D
Environmental Qualification: RTCA/DO-160D:
[E1]XAB[BCE][R(E,E1)S(L,M)]EWXXFXZ[A(WF)B]A[A(WF)B]C[WW]H[A3E3]XBA

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3.2.3 HGA-6000 Electrical Interfaces
1) The HGA-6000 interfaces to the aircraft are typically done via 2 cables that exit from the base
of the unit.
J1: L-Band Feed
L-Band Rx: 1525 to 1559 MHz
L-Band Tx: 1626.5 to 1660.5 MHz
J2: Data and Power
+28VDC Power
ARINC 429
DLNA Control
RS232 Maintenance Port
2) Power: 28 VDC @ 800 mA
3) Operating voltage: 22 – 30.3 VDC
3.2.3.1 HGA-6000 to DLNA RF Interconnection
Table 1 : HGA-6000 L-Band RF connector
NAME CONNECTOR DESCRIPTION
J1 11TNC-50-3-117 L-Band Tx and Rx
1) Connector J1 may be changed to be customer specific.
2) It is recommended that the coaxial interconnection between J1 and DLNA have a maximum
loss of 0.3dB. The performance of the HGA-6000 is such that slightly higher cable loss (up to
0.5dB) can be accommodated depending on the system configuration. Consult Cobham for
further information.

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3.2.3.2 HGA-6000 to SDU Interconnection
Connecting the antenna to the SDU using the Modem Interface is done via a single coaxial cable.
Details are not given in this manual for this option, please contact Cobham for further details in this
regard.
3.2.3.2.1 Wiring Table
A 9-pin D-Type Female Connector may be installed at an accessible location for antenna
maintenance, if required.
Table 2 : HGA-6000 Electrical Interface
SIGNAL J2 DESCRIPTION
+28V_DC IN YAircraft power
28V_RET SGrounded to case internally
A429_Tx_A Out GARINC 429 from antenna
GND MScreen for ARINC 429
A429_Tx_B Out HARINC 429 from antenna
A429_Rx_A IN AARINC 429 to antenna
GND MScreen for ARINC 429
A429_Rx_B IN BARINC 429 to antenna
GND RScreen for DLNA signals
DLNA_BITE LDLNA BITE
DLNA_CTL KDLNA on/off control from antenna
GND FSerial data ground (to D-type pin 5)
RS232_RxD DSerial data to antenna (to D-type pin 3)
RS232_TxD ESerial data from antenna (to D-type pin 2)
3.2.3.2.2 Connector Types
Table 3 : Standard HGA-6000 Data and power cable connectors
NAME CONNECTOR DESCRIPTION
J2 MS3476W16-26P Pigtail Connector
MS3471W16-26S Mating connector to Pigtail
Connector J2 may be changed to be customer specific.

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THIS PAGE
LEFT BLANK
INTENTIONALLY

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4. HGA-6000 HIGH GAIN ANTENNA INSTALLATION
4.1 Installation Overview
4.1.1 Equipment required
Connecting the antenna to the SDU via the modem is done via a single coaxial cable. Details are
not given in this manual for this option.
Table 4 : HGA-6000 Equipment Required
ITEM PART NAME PART NUMBER
1HGA-6000 Antenna 677-A0161-XXX*
2HGA-6000 Power and Data Pigtail supplied as part of the antenna
3HGA-6000 L-band coaxial cable supplied as part of the antenna
* NOTE: Contact Cobham for Variation part number details
The following items are not permanently installed on the aircraft as part of the SATCOM system but
are required during the installation and/or maintenance process.
Table 5 : Test Equipment Required for HGA-6000 system installation
EQUIPMENT PURPOSE
Antenna Support PC program:
800-A0124, Aero Antenna Systems
Support
Software program required for antenna
installation if antenna misalignment compensation
must be performed by the antenna.
If antenna misalignment compensation is
performed by the SDU, this software is not
required. Refer to the relevant SDU installation
manual for further information.
Laptop computer with Microsoft
Windows 98, 2000, XP or higher and
a RS232 COM port. To run the Antenna Support PC program and
interface with the antenna maintenance port.
Alignment protractor and electronic
spirit level with accuracy to within
0.25 degrees
To determine difference in aircraft and antenna
alignment. The antenna attitude angles may be
measured by placing the spirit level on the
mounting area before the antenna is mounted.

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4.1.2 General Electrical Requirements
1) The minimum wire size for power lines is #22AWG. Where workmanship standards allow,
#24AWG may be used for all other lines. The installer is however responsible for determining
the appropriate wire size required for the length of cable run, to ensure that the specified
maximum cable losses do not exceed those indicated in this manual.
2) Keep the interconnect cables away from circuits carrying heavy current, pulse transmitting
equipment and any other potential source of interference.
3) Use shielded twisted-pair wiring for all balanced connections. Shields should be grounded.
4) The characteristic impedance of each coaxial cable (connectors included) should be 50 Ohms
with a VSWR of less than 1.2:1
4.1.3 Summarized Installation Tasks in Sequence
HGA-6000 installation tasks
Step 1) The HGA-6000 will typically be mounted in the aircraft’s tail radome. A suitable
mounting plate or structure will be required to interface with the four mounting holes in
the HGA-6000 base and must be supplied by the installer.
Step 2) Determine or measure the HGA-6000 alignment angles prior to mounting the HGA-6000.
See section 4.2.2.2.
Step 3) Mount the HGA-6000.
Final testing
Step 4) If using a non-Cobham SDU, run the Antenna Systems Support software (see Appendix
B). Installation angles are now entered. If using a Cobham SDU, then the install angles
may be stored in the SDU. Refer to the Swift64 or SwiftBroadband SDU installation
manuals.
Step 5) Complete the connection of the HGA-6000 to the Swift64 or SwiftBroadband system.

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4.2 HGA-6000 Installation Guidelines
4.2.1 Mechanical Fixing
1) The installation mounting plate or structure must provide a flat platform for the HGA-6000.
2) The HGA-6000 is fixed to the mounting plate/structure by means of four ¼ inch 28UNF screws
which screw into the base of the antenna from below. A locking wire thread insert in each of
the four mounting holes will ensure that the screws remain secure. The mounting hole
specifications are provided in Section 3.2.1, as well as in Figure 7.
Choose correct screw length to ensure engagement with the locking coil of the insert, that is
minimum engagement = 1/4"
3) Provision may be required to accommodate the four screw heads on the aircraft’s mounting
structure.
4.2.2 Antenna Alignment
4.2.2.1 Antenna Markings
The base of the antenna is marked with a letter “A”, as indicated by the arrow below. There are
two notches on the side of the baseplate that corresponds with the “A”. These notches can be used
to determine where the “A” is if the antennas has already been installed. Take note of the B, C and
D sides of the antenna, as these will be used to set the installation angles of the antenna as
described in 4.2.2.2.
A
(Two notches on this side)
B D
(RF Cable side) (No cables)
C
(Data and Power Cable side)
Figure 7 : HGA-6000 Alignment marking from the base of antenna