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GTS Processor Installation ManualPage vii
190-00587-50Revision A
Page viiiGTS Processor Installation Manual
DRAFT
Revision A190-00587-50
1 GENERAL DESCRIPTION
DRAFT
1.1 Introduction
This manual presents mechanical and electrical installation requirements for installing the GTS Processor
as a Traffic Advisory System (TAS) (GTS 825), Traffic Collision Avoidance System (TCAS I) (GTS 855),
and Traffic Collision Avoidance System (TCAS II) (GTS 8000).
1.2 Equipment Description
The GTS Processor is a microprocessor-based Line Replaceable Unit (LRU) that uses active interrogations
of Mode S and Mode A/C transponders to provide Traffic Advisories and Resolution Advisories (GTS
8000 only) to the pilot. When installed in a system the GTS Processor can be configured as a TAS (GTS
825) or can be upgraded to a TCAS I (GTS 855) or TCAS II (GTS 8000) by purchasing an enablement
card from Garmin. The GTS Processor meets the TSO/ETSO requirements for the configured traffic
system function (TAS, TCAS I, or TCAS II). When installed with a 1090 MHz ADS-B transmit class of
equipment the GTS Processor also utilizes passive surveillance. Traffic is displayed on an external MFD
via ARINC 429 and/or Ethernet High Speed Data Bus (HSDB). An aural alert is also provided to inform
the crew a traffic advisory (TA) or resolution advisory (RA) (GTS 8000 only) will be displayed.
A top-mounted directional antenna is used to derive bearing of the intruder aircraft, which is displayed
with relative altitude to own aircraft. Top antenna transmitted interrogations are directional, reducing the
number of transponders that receive the interrogation, and thus reducing potential garble on the 1090 MHz
band. For GTS 825 and GTS 855 installations, a bottom monopole or directional (highly recommended)
antenna is optional. For GTS 8000 installations, a bottom monopole or directional (highly recommended)
antenna is required. Bottom antenna transmit interrogations and broadcasts (GTS 8000 only) are omni
directional, using a monopole antenna or a directional antenna. A bottom directional antenna installation
gives the benefit of intruder bearing visibility for targets that are shaded from the top directional antenna.
The target bearing accuracy may be degraded for bottom directional antenna installations on aircraft with
fixed gear.
NOTE
GTS Processor installations, configured as a GTS 855 TCAS I or GTS 825 TAS,
require a Garmin-approved transponder capable of receiving TCAS II broadcast
data.
NOTE
GTS Processor installations, configured as a GTS 8000 TCAS II, require a GTX
3000 or other Garmin-approved RTCA DO-185A/B compatible transponder.
NOTE
The GTS Processor is not to be installed in an aircraft with a TSO-C119a-only
compatible transponder.
NOTE
A co-installed mode S transponder should be connected to the mutual suppression
bus, and meet the mutual suppression requirements of DO-181A or later
GTS Processor Installation ManualPage 1-1
190-00587-50Revision A
Refer to Table 1-1 for a list of compatible transponders.
DRAFT
Table 1-1 Compatible Transponders
Capable of
GTX Transponder
Model
GTX 330/330D
GTX 330 ES/330D ES
GTX 33/33D
GTX 33 ES/33D ES
GTX 328
GTX 3000YesYesYes
1. Remote mounted transponders require a compatible controller. Contact Garmin for details.
2. Factory update is required to allow ADS-B functionality.
3. GTX Software version 6.11 or higher.
4. GTX Software version 6.10 or higher.
1.2.1 GTS Processor Configuration Options
Table 1-2 lists the GTS Processor surveillance configuration options, enabled at the time of installation.
(1)
(1)
Receiving TCAS II
Broadcast Data
(Required for GTS
Processor)
(3)
Yes
(3)
Yes
(3)
Yes
(3)
Yes
(4)
Yes
Table 1-2 Configuration Options
ADS-B Capable
RTCA DO-185A/B
Compatible
(2)
Yes
YesNo
(2)
Yes
YesNo
NoNo
No
No
Traffic
Model
Number
GTS 825011-02571-00TSO-C147XX400
GTS 855*011-02571-00TSO-C118XX400
GTS 8000*011-02571-00TSO-C119cXX400
*Requires upgrade using GTX Processor TCAS I/TCAS II Enablement Process. See Section XXX for instructions.
1.3 Interface Summary
The GTS Processor is designed as an open architecture system that uses typical ARINC 429, RS-232, and
Ethernet communications interfaces.
1.4 Technical Specifications
1.4.1 Environmental Qualification Form
It is the responsibility of the installing agency to obtain the latest revision of the GTS Processor
Environmental Qualification Form. To obtain a copy of this form, see the dealer/OEM portion of the
Garmin web site (www.garmin.com
number:
Garmin Part
Number
GTS Processor Environmental Qualification Form, Garmin part number 005-00630-02
Applicable
TSO
). This form is available directly from Garmin under the following part
GTS Processor Unit Weight w/out Connector Kit11.30 lbs (5.13 kg)
GTS Processor Unit Weight with Connector Kit w/Vertical Rack12.65 lbs (5.74 kg)
GTS Processor Unit Weight with Connector Kit w/Horizontal Rack13.25 lbs (6.01 kg)
1.4.3 General Specifications
Table 1-4 contains general specifications. For detailed environmental specifications, see the
Environmental Qualification Form.
Table 1-4 General Specifications
CharacteristicsSpecifications
Operating Temperature Range-55°C to +70°C.
Humidity95% non-condensing
Altitude Range-1,500 ft to 55,000 ft
Software ComplianceRTCA/DO-178B level B
Hardware ComplianceRTCA/DO-254 Level B
Environmental ComplianceRTCA/DO-160F
1.4.4 Power Requirements
Tables list the power requirements for the GTS Processor
Table 1-5 Maximum Operation Current Draw
CharacteristicsSpecifications
GTS Processor Power Consumption
Table 1-6 Maximum Boot-Up Current Draw
CharacteristicsSpecifications
GTS Processor Boot-Up Current Draw
2.5 A max operating at 28.0 Vdc
5.0 A max operating at 14.0 Vdc
2.5 A at 28.0 Vdc for 700 ms
5.0 A at 14.0 Vdc for 700 ms
GTS Processor Installation ManualPage 1-3
190-00587-50Revision A
1.5 Certification
DRAFT
The conditions and tests required for TSO/ETSO approval of this article are minimum performance
standards. It is the responsibility of those installing this article either on or within a specific type or class
of aircraft to determine that the aircraft installation conditions are within the TSO/ETSO standards. TSO/
ETSO articles must have separate approval for installation in an aircraft. The article may be installed only
if performed under 14 CFR part 43 or the applicable airworthiness requirements.
The following tables provide a list of applicable TSO/ETSOs for the GTS Processor.
1.5.1 GTS Processor TSO/ETSO Compliance
When installed as a system, the GTS Processor, which includes a GA 58 (or other Garmin approved
antenna), and a CDTI (Cockpit Display of Traffic Information) comprise what Garmin considers to be a
minimum generic GTS Processor system installation. The GTS Processor lacks a display and by itself is
an incomplete system and cannot completely meet the requirements of TSO-C119c/ETSO-C119c,
TSO-C118/ETSO-C118 or TSO-C147/ETSO-C147.
Table 1-7 TSO/ETSO Compliance
GTS
Processor
Configuration
Traffic Alert and Collision
GTS 8000
GTS 855
GTS 825
GTS 8000,
GTS 855, and
GTX 825
*Equipment is capable of TSO-C166b/ETSO-C166a Class A1S/Type 1 Receiving Only per
RTCA/DO-260B when installed with a single antenna.
*Equipment is capable of TSO-C166b/ETSO-C166a Class A1/Type 1 Receiving Only when installed with
diversity antennas.
*The Class level is dependent upon the installation.
Avoidance System (TCAS
II) Airborne Equipment
Traffic Alert and Collision
Avoidance System (TCAS
I) Airborne Equipment
Traffic Advisory System
(TAS) Airborne Equipment
Extended Squitter
Automatic Dependent
Surveillance – Broadcast
(ADS-B) and Traffic
Information Service –
Broadcast (TIS-B)
Equipment Operating on
the Radio Frequency of
1090 Megahertz (MHz)
A statement identifying whether the installation is TSO-C166b/ETSO-C166a
Class A1S/Type 1 Receiving Only or TSO-C166b/ETSO-C166a Class A1/Type 1
Receiving Only, per RTCA/DO-260B, should be included in the ship's log during
Installation.
† Installation of this Receiving Only class of equipment is intended only for those aircraft in which a 1090
MHz ADS-B transmit class of equipment, or other complementary ADS-B link transmit class of
equipment (such as UAT), is already installed. When no such ADS-B link transmit class of equipment is
installed, the ADS-B receive functionality is disabled by disabling the 'ADSB TX Capable' configuration
option (see section 3.9.2).
1.5.2 GTS Processor TSO/ETSO Deviations
Table 1-8 TSO/ETSO Deviations
TSO/ETSODeviation
1. Garmin was granted a deviation from TSO-C118 section a.(1) to use RTCA DO-197A, instead
of RTCA DO-197 as the Minimum Performance Standard
2. Garmin was granted a deviation from TSO-C118 section a.(2) to use RTCA DO-160F, instead of
RTCA DO-160B as the standard for Environmental Conditions and Test Procedures for Airborne
Equipment.
3. Garmin was granted a deviation from TSO-C118 section a.(3)(i) to use RTCA DO-178B instead
of RTCA DO-178A.
4. Garmin was granted a deviation from RTCA DO-197A section 2.2.3.2.1 to use the
Interrogations Spectrum requirement of RTCA DO-185B section 2.2.3.3 instead of the requirement
of RTCA DO-197A section 2.2.3.2.1.
TSO-C118
5. Garmin was granted a deviation from RTCA DO-197A section 2.2.3.5 to use the “Mode C Only
All-Call” format specified by RTCA DO-185B section 2.2.3.8.1 instead of the “Mode C” format for
ATCRBS interrogations.
6. Garmin was granted a deviation from RTCA DO-197A section 2.2.6 to use selective Mode S
interrogations following all the applicable protocols for Mode-S surveillance interrogations in the
NAS as stated in DO-185B and DO-181D.
7. Garmin was granted a deviation from RTCA DO-197A section 2.2.9.1 to realize the bearing
estimation function using a direction finding antenna augmented by tracked correlated ADS-B data
when such data is available and of sufficient integrity.
8. Garmin was granted a deviation from RTCA DO-197A section 2.2.11 to use the suppression
pulse on the aircraft suppression bus specified by RTCA DO-185B section 2.2.3.12 (70 +/-1 µs
from top antenna and 90 +/-1 µs from bottom antenna) instead of 100 +/-5 µs.
GTS Processor Installation ManualPage 1-5
190-00587-50Revision A
ETSO-C118
DRAFT
TSO-C119c
ETSO-C119c
Table 1-8 TSO/ETSO Deviations, Continued
1. Garmin was granted a deviation from ETSO-C118 section 3.1.1 to use RTCA DO-197A, instead
of RTCA DO-197 as the Minimum Performance Standard.
2. Garmin was granted a deviation from ETSO-C118 section 3.1.2 to use EUROCAE ED-14F,
instead of EUROCAE ED-14D as the standard for Environmental Conditions and Test Procedures
for Airborne Equipment.
3. Garmin was granted a deviation from RTCA DO-197A section 2.2.3.2.1 to use the
Interrogations Spectrum requirement of RTCA DO-185B section 2.2.3.3 instead of the requirement
of RTCA DO- 197A section 2.2.3.2.1.
4. Garmin was granted a deviation from RTCA DO-197A section 2.2.3.5 to use the “Mode C Only
All-Call” format specified by RTCA DO-185B section 2.2.3.8.1 instead of the “Mode C” format for
ATCRBS interrogations.
5. Garmin was granted a deviation from RTCA DO-197A section 2.2.9.1 to realize the bearing
estimation function using a direction finding antenna augmented by tracked correlated ADS-B data
when such data is available and of sufficient integrity.
6. Garmin was granted a deviation from RTCA DO-197A section 2.2.11 to use the suppression
pulse on the aircraft suppression bus specified by RTCA DO-185B section 2.2.3.12 (70 +/-1 μs
from top antenna and 90 +/-1 μs from bottom antenna) instead of 100 +/-5 μs.
1. Garmin was granted a deviation from RTCA DO-185B section 2.2.3.13.2.1.1 to not have the
ability to interface with FAA TSO-C119a compatible transponder units.
2. Garmin was granted a deviation from RTCA DO-185B section 2.2.4.4.2.2.b to use the
Enhanced Preamble Detection method of RTCA DO-260B Appendix I section I.4.1
3. Garmin was granted a deviation from RTCA DO-185B section 2.2.4.4.2.2.c to use the Baseline
Multi-sample bit and confidence declaration technique of RTCA DO-260B Appendix I section
I.4.2.3.1.
4. Garmin was granted a deviation from RTCA DO-185B section 2.2.6.7.2 to realize the bearing
estimation function using a direction finding antenna augmented by tracked correlated ADS-B data
when such data is available and of sufficient integrity.
1. Garmin was granted a deviation from ETSO-C119c to use EUROCAE ED-14F instead of
EUROCAE ED-14D as the standard for Environmental Conditions and Test Procedures for
Airborne Equipment.
2. Garmin was granted a deviation from RTCA DO-185B section 2.2.3.13.2.1.1 to not have the
ability to interface with FAA TSO-C119a compatible transponder units.
3. Garmin was granted a deviation from RTCA DO-185B section 2.2.4.4.2.2.b to use the
Enhanced Preamble Detection method of RTCA DO-260B Appendix I section I.4.1.
4. Garmin was granted a deviation from RTCA DO-185B section 2.2.4.4.2.2.c to use the Baseline
Multi-sample bit and confidence declaration technique of RTCA DO-260B Appendix I section
I.4.2.3.1.
5. Garmin was granted a deviation from RTCA DO-185B section 2.2.6.7.2 to realize the bearing
estimation function using a direction finding antenna augmented by tracked correlated ADS-B data
when such data is available and of sufficient integrity.
1. Garmin was granted a deviation from TSO-C147 section 1.c to use RTCA DO-160F, instead of
RTCA DO-160D as the standard for Environmental Conditions and Test Procedures for Airborne
Equipment.
2. Garmin was granted a deviation from TSO-C147 Appendix 1 section 1.6 to use selective Mode
S interrogations as specified by RTCA DO-185A section 2.2.3.9 and 2.2.4.5.4.2 following all the
applicable protocols for Mode-S surveillance interrogations in the NAS as stated in
RTCA DO-185B and RTCA DO-181D.
3. Garmin was granted a deviation from RTCA DO-197A section 2.2.3.2.1 to use the
Interrogations Spectrum requirement of RTCA DO-185B section 2.2.3.3 instead of the requirement
of RTCA DO-197A section 2.2.3.2.1.
4. Garmin was granted a deviation from RTCA DO-197A section 2.2.3.5 to use the “Mode C Only
All-Call” format specified by RTCA DO-185B section 2.2.3.8.1 instead of the “Mode C” format for
ATCRBS interrogations.
5. Garmin was granted a deviation from RTCA DO-197A section 2.2.9.1 to realize the bearing
estimation function using a direction finding antenna augmented by tracked correlated ADS-B data
when such data is available and of sufficient integrity.
6. Garmin was granted a deviation from RTCA DO-197A section 2.2.11 to use the suppression
pulse on the aircraft suppression bus specified by RTCA DO-185B section 2.2.3.12 (70 +/-1 μs
from top antenna and 90 +/-1 μs from bottom antenna) instead of 100 +/-5 μs.
1. Garmin was granted a deviation from ETSO-C147 section 3.1.2 to use EUROCAE ED-14F,
instead of EUROCAE ED-14D as the standard for Environmental Conditions and Test Procedures
for Airborne Equipment.
2. Garmin was granted a deviation from ETSO-C147 Appendix 1 section 1.6 to use selective Mode
S interrogations as specified by RTCA DO-185B section 2.2.3.9 and 2.2.4.5.4.2 following all the
applicable protocols for Mode-S surveillance interrogations in the NAS as stated in RTCA DO185B and RTCA DO-181D.
3. Garmin was granted a deviation from RTCA DO-197A section 2.2.3.2.1 to use the
Interrogations Spectrum requirement of RTCA DO-185B section 2.2.3.3 instead of the requirement
of RTCA DO-197A section 2.2.3.2.1
4. Garmin was granted a deviation from RTCA DO-197A section 2.2.3.5 to use the “Mode C Only
All-Call” format specified by RTCA DO-185B section 2.2.3.8.1 instead of the “Mode C” format for
ATCRBS interrogations.
5. Garmin was granted a deviation from RTCA DO-197A section 2.2.9.1 to realize the bearing
estimation function using a direction finding antenna augmented by tracked correlated ADS-B data
when such data is available and of sufficient integrity.
6. Garmin was granted a deviation from RTCA DO-197A section 2.2.11 to use the suppression
pulse on the aircraft suppression bus specified by RTCA DO-185B section 2.2.3.12 (70 +/-1 μs
from top antenna and 90 +/-1 μs from bottom antenna) instead of 100 +/-5 μs.
1. Garmin was granted a deviation from ETSO-C166a, section 4.2 to allow not marking the unit
with the class information, which is instead provided in the installation and operation manual.
2. Garmin was granted a deviation from ETSO-C166a to use RTCA DO-260B instead of RTCA
DO-260A as the Minimum Performance Standard.
3. Garmin was granted a deviation from ETSO-C166a to use RTCA DO-160F instead of RTCA
DO-160E as the Environmental Standard.
4. Garmin was granted a deviation from RTCA DO-260B section 2.2.4.3.4.7.3.b to use the
Conservative and Brute Force error correction techniques specified by RTCA DO-260B section
2.2.4.4.3.1 instead of 2.2.4.4.2.2.d and Appendix A, Section 3 of RTCA DO-185B.
5. Garmin was granted a deviation from RTCA DO-260
and Brute Force error correction techniques specified by RTCA DO-260B section 2.2.4.4.3.1
instead of section 2.2.4.4.2.2.d and Appendix A, Section 3 of RTCA DO-185B.
B section
2.2.4.5.b to use the Conservative
GTS Processor Installation ManualPage 1-7
190-00587-50Revision A
1.6 Reference Documents
DRAFT
The following publications are sources of additional information for installing the GTS Processor. Before
installing the GTS Processor, the installer should read all referenced materials along with the manual.
All Garmin avionics products are warranted to be free from defects in materials or workmanship for: one
years from the date of purchase for new Remote-Mount and Panel-Mount products; one year from the date
of purchase for new portable products and any purchased newly-overhauled products; six months for
newly-overhauled products exchanged through a Garmin Authorized Service Center; and 90 days for
factory repaired or newly-overhauled products exchanged at Garmin in lieu of repair. Within the applicable
period, Garmin will, at its sole option, repair or replace any components that fail in normal use. Such
repairs or replacement will be made at no charge to the customer for parts or labor, provided that the
customer shall be responsible for any transportation cost. This warranty does not apply to: (i) cosmetic
damage, such as scratches, nicks and dents; (ii) consumable parts, such as batteries, unless product damage
has occurred due to a defect in materials or workmanship; (iii) damage caused by accident, abuse, misuse,
water, flood, fire, or other acts of nature or external causes; (iv) damage caused by service performed by
anyone who is not an authorized service provider of Garmin; or (v) damage to a product that has been
modified or altered without the written permission of Garmin. In addition, Garmin reserves the right to
refuse warranty claims against products or services that are obtained and/or used in contravention of the
laws of any country.
THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF
ALL OTHER WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING ANY
LIABILITY ARISING UNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, STATUTORY OR OTHERWISE. THIS WARRANTY GIVES YOU
SPECIFIC LEGAL RIGHTS, WHICH MAY VARY FROM STATE TO STATE.
IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT OR
CONSEQUENTIAL DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE OR
INABILITY TO USE THE PRODUCT OR FROM DEFECTS IN THE PRODUCT. SOME STATES DO
NOT ALLOW THE EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE
ABOVE LIMITATIONS MAY NOT APPLY TO YOU.
Garmin retains the exclusive right to repair or replace (with a new or newly-overhauled replacement
product) the product or software or offer a full refund of the purchase price at its sole discretion. SUCH
REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF
WARRANTY.
Online Auction Purchases: Products purchased through online auctions are not eligible for warranty
coverage. Online auction confirmations are not accepted for warranty verification. To obtain warranty
service, an original or copy of the sales receipt from the original retailer is required. Garmin will not
replace missing components from any package purchased through an online auction.
International Purchases: A separate warranty may be provided by international distributors for devices
purchased outside the United States depending on the country. If applicable, this warranty is provided by
the local in-country distributor and this distributor provides local service for your device. Distributor
warranties are only valid in the area of intended distribution. Devices purchased in the United States or
Canada must be returned to the Garmin service center in the United Kingdom, the United States, Canada,
or Taiwan for service.
Garmin International, Inc.Garmin (Europe) Ltd.
1200 East 151st StreetLiberty House, Bulls Copse Road
Olathe, Kansas 66062, U.S.A.Hounsdown Business Park
Phone:913/397.8200Romsey, SO40 9RB, U.K.
FAX:913/397.0836Phone:44/ (0) 870.8501241
FAX:44/ (0) 870.850125
GTS Processor Installation ManualPage 1-9
190-00587-50Revision A
This section provides hardware equipment information for installing the GTS Processor and related
hardware. Installation of the GTS Processor should follow the aircraft TC or STC requirements. Cabling
is fabricated by the installing agency to fit each particular aircraft. The guidance of FAA advisory circulars
AC 43.13-1B and AC 43.13-2B, where applicable, may be found useful for making retro-fit installations
that comply with FAA regulations.
2.1.1 Unit Configurations
The GTS Processor is available under the following part numbers:
Table 2-1 Unit Configuration
Item
GTS Processor, (011-02571-00)
Applicable
LRU Software
Part Numbers
All
006-B1244-0( )
through
006-B1244-2( )
except
006-B1244-00
through
006-B1244-03
Applicable Custom
Logic Device
Part Numbers
006-C0081-2( )010-00962-00
Garmin P/N
2.1.2 Required Accessories
NOTE
Refer to the Dealer’s Only portion of www.garmin.com for instructions on
determining what accessories are needed.
Each of the following accessories are provided separately from the GTS Processor and is required to install
the unit. Only one is required.
*Approved for use in RTCA DO-160F, Section 8, Category S, Curve C, Y, and L installations, as well as
RTCA DO-160F, Section 8, Category U, Curve G installations.
For a GTS Processor installation with a single GA 58 directional antenna (GTS 855/GTS 825 only), 8 TNC
connectors (not supplied), either straight or right angle, are required.
For a GTS Processor installation with dual GA 58 directional antennas (GTS 8000/GTS 855/GTS 825), 16
TNC connectors (not supplied), either straight or right angle, are required.
For a GTS Processor installation with a single GA 58 directional antenna and a monopole antenna (GTS
8000/GTS 855/GTS 825), 9 TNC connectors and 1 BNC connector (not supplied), either straight or right
angle, are required.
TNC 50 Ohm terminations (not supplied) are required for all unused antenna ports.
GTS Processor Installation ManualPage 2-1
190-00587-50Revision A
Table 2-3 Connector Kits
DRAFT
Connector KitsGarmin P/N
GTS Processor Connector Kit011-01360-00
GTS Connector Kit w/Config Module and USB Pigtail011-01360-01
USB-B Pigtail (see GTS Configuration Options)011-01782-00
Table 2-4 Optional Accessories
Optional AccessoriesGarmin P/N
Color Coded Heat Shrink Kit011-02817-00
NOTE
The GTS Processor is to be installed with a four-beam directional interrogation
antenna mounted to the top of the aircraft as described in the antenna installation
manual.
Table 2-5 Antennas
AntennasGarmin P/N
GA 58 Directional Antenna, QMA (011-01346-00)
NOTE: Refer to 190-00587-00 GTS 8XX Installation Manual
for installation instructions
GA 58 Directional Antenna, TNC, (011-01346-02)
NOTE: Refer to 190-000587-20 GA 58 Installation Manual
for installation instructions.
Low Profile Directional Antenna
Monopole Antenna
*010-10720-00 and 010-10720-02 include mounting screws and o-ring, unless specifically requested to exclude.
**Or Sensor Systems Incorporated part number S72-1735-24 (long TNC connectors) or S72-1735-26 (short TNC
connectors) that meet the requirements of Garmin part number 013-00276-0X or 013-00276-5X, respectively. Refer
to the manufacturer’s installation manual for installation instructions..
010-10160-00 or L-Band Monopole Antenna that
meets TSO-C74c
010-10720-00
010-10720-02
013-00276-XX
*
*
**
Table 2-6 Configuration Module
Configuration ModuleGarmin P/N
Configuration Module*011-00979-20
*Required for GTS Processor installations that do not have other means (such as a GDU XXXX
Configuration Module) to store GTS Processor configuration data. Contact Garmin for additional
guidance in determining applicability.
Fabrication of a wiring harness is required. Sound mechanical and electrical methods and practices are
required for installation of the GTS Processor.
2.2.1 Antenna Considerations
Refer to GA 58 Installation Manual 190-00587-20 for antenna installation information.
NOTE
For GTS 855/GTS 825 installations, either a monopole antenna or directionalantenna may be used if installing an optional bottom mounted antenna. For GTS8000 installations, a bottom monopole or directional antenna is required. Abottom directional antenna installation (recommended) gives the benefit ofintruder bearing visibility for targets that are shaded from the top directionalantenna. The target bearing accuracymay be degraded for bottom directionalantenna installations on aircraft with fixed gear.
2.2.1.1 TAS/TCAS Antenna Location
Refer to GA 58 Installation Manual 190-00587-20 for antenna installation information
2.3 Electrical Bonding
Electrical equipment, supporting brackets, and racks should be electrically bonded to the aircraft’s main
structure. Refer to SAE ARP 1870 section 5 when surface preparation is required to achieve electrical
bond. The electrical bond should achieve direct current (DC) resistance less than or equal to 2.5 milliohms
to local structure to where the equipment is mounted. Compliance should be verified by inspection using a
calibrated milliohm meter. An equivalent OEM procedure may also be substituted. There may be OEMspecific reasons for electrically isolating equipment or having a higher bond resistance. These reasons
should be rationalized upon installation approval. In general, Garmin recommends that all GTS Processor
equipment be electrically bonded.
Refer to GA 58 Installation Manual 190-00587-20 for antenna installation information.
For composite aircraft, the antenna baseplate must be electrically bonded to the common ground of other
installed equipment for lightning purposes. This can be achieved through the antenna mounting screws.
GTS Processor Installation ManualPage 2-3
190-00587-50Revision A
2.4 Cabling and Wiring
DRAFT
The contacts used to facilitate the use of #18 AWG wire, if used for Aircraft Power and Aircraft Ground,
have expanded-diameter barrels that extend out from the back of the standard D-sub connector body to
accommodate the larger diameter wire. Appropriate heat shrink tubing should be utilized to provide
sufficient insulation from surrounding contacts.
NOTE
When removing an expanded-diameter barrel contact, always cut off the
expanded-diameter barrel before using an extraction tool to remove the contact.
Ensure that routing of the wiring does not come in contact with sources of heat, RF or EMI interference.
Check that there is ample space for the cabling and mating connectors. Avoid sharp bends in cabling and
routing near aircraft control cables.
NOTE
All appliance to antenna coaxial cabling shall bundle top four channels as a group
and bottom four channels as a group to prevent incorrect wiring between top and
bottom channels.
A visual inspection shall be performed to verify that all coaxial cables are connected properly, before
attempting to operate the equipment.
2.4.1 Coaxial Cable
The GTS Processor requires two sets of coaxial cable assemblies when a directional GA 58 antenna (or
other Garmin approved antenna) is used for both top and bottom. Each set consists of four coaxial cable
assemblies.
Each set of four cables must be assembled using the same type of coaxial cable in order to meet phase and
attenuation matching requirements. In order for the system to operate in compliance with manufacturer
specifications, the coaxial cable assemblies must not exceed the attenuation specifications as stated in this
document. This section explains in further detail the coaxial cable and termination requirements.
NOTE
TNC connectors and BNC connectors, required for building the coaxial cable
assemblies for some antenna options, are not provided.
2.4.1.1 GTS Processor Installations
NOTE
For all GTS Processor installations, either a monopole antenna or directional
antenna (recommended) may be used if installing a bottom mounted antenna.
GTS 8000 installations require either a bottom-mounted directional
(recommended) or monopole antenna. A bottom antenna is optional for GTS 855/
GTS 825 installations, but a bottom directional antenna is recommended for best
performance. A bottom directional antenna installation gives the benefit of
intruder bearing visibility for targets that are shaded from the top directional
antenna. The target bearing accuracy may be degraded for bottom directional
antenna installations on aircraft with fixed gear.
A GTS Processor installation with both top and bottom mounted directional antennas uses one set of
coaxial cables for the four GTS Processor TOP jacks (J1 TOP, J2 TOP, J3 TOP, J4 TOP) that are connected
to the corresponding top antenna jacks J1, J2, J3 and J4. A second set of coaxial cables are used for the
four GTS Processor BTM jacks (J1 BTM, J2 BTM, J3 BTM, J4 BTM) that are connected to the
corresponding bottom antenna jacks J1, J2, J3 and J4. Each cable assembly shall not exceed the maximum
attenuation of 3.0dB at 1090MHz for a GA 58 directional antenna installations, and 2.5 dB for low-profile
DRAFT
directional antenna installations as shown in Figure 2-1.
Figure 2-1 GTS Processor Installation with Top and Bottom Directional Antennas
If a bottom mount monopole antenna is installed, a single coaxial cable must be used to connect the GTS
Processor bottom jack J1 BTM to the monopole antenna jack. The coaxial cable assembly shall not exceed
the maximum attenuation of 3.0dB at 1090MHz for a GA 58 directional antenna and 2.5 dB for a low
profile directional antenna as shown in Figure 2-2 and stated in Table 2-2. Each of the remaining GTS
Processor bottom jacks (J2 BTM, J3 BTM, J4 BTM) are to be terminated using a 50Ω TNC termination.
Figure 2-2 GTS Processor Installation with Top Directional and Bottom Monopole
Antennas
GTS Processor Installation ManualPage 2-5
190-00587-50Revision A
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