Garmin GTX 335 Series, GTX 345 Series Pilot's Manual

GTX 335/345 Series

All-In-One ADS-B Transponder

Pilot's Guide

© 2016 Garmin Ltd. or its subsidiaries. All rights reserved.

This manual reflects the operation of GTX 3X5 Series Transponders

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September 2016 190-01499-00 Rev. C

190-01499-00 Rev. C GTX 335/345 Pilot’s Guide i

Copyright Information

LIMITED WARRANTY

LIMITED WARRANTY

LIMITED WARRANTY

All Garmin avionics products are warranted to be free from defects in materials or workmanship for: two 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.

To obtain warranty service, contact your local Garmin Authorized Service Center. For assistance in locating a service
center near you, visit the Garmin website at:

http://www.garmin.com or contact Garmin Customer Service at 866-739-5687.

ii GTX 335/345 Pilot’s Guide 190-01499-00 Rev. C

WARNINGS/CAUTIONS/NOTES

WARNINGS \ CAUTIONS \ NOTES

WARNING

Do not use data link weather information for maneuvering in, near, or around areas of
hazardous weather. Information contained within data link weather products may
not accurately depict current weather conditions.

WARNING

Do not use the indicated data link weather product age to determine the age of the
weather information shown by the data link weather product. Due to time delays
inherent in gathering and processing weather data for data link transmission, the
weather information shown by the data link weather product may be significantly older
than the indicated weather product age.

WARNING

This product, its packaging, and its components contain chemicals known to the
State of California to cause cancer, birth defects, or reproductive harm. This
notice is being provided in accordance with California’s Proposition 65. If you have
any questions or would like additional information, please refer to our website at
www.garmin.com/prop65/.

WARNING

To reduce the risk of unsafe operation, carefully review and understand all aspects of
the GTX 3X5 Pilot’s Guide. Thoroughly practice basic operation prior to actual use.

WARNING

The display surface is coated with a special anti-reflective coating that is very
sensitive to skin oils, waxes, and abrasive cleaners. It is very important to clean the
lens using an eyeglass lens cleaner that is specified as safe for anti-reflective
coatings with a clean, lint-free cloth.

WARNING

Traffic information is provided as an aid in visually acquiring traffic. Pilots must
maneuver the aircraft based only upon ATC guidance or positive visual acquisition
of traffic.

CAUTION

Unauthorized repairs or modifications could result in permanent damage to the
equipment, and void your warranty and your authority to operate this device under
FCC and FAA regulations.

190-01499-00 Rev. C GTX 335/345 Pilot’s Guide iii

Copyright Information

WARNINGS/CAUTIONS/NOTES

WARNINGS \ CAUTIONS \ NOTES

NOTE

The coverage expected for all operations (transponder replies to ATC, ADS-B and FIS-B
reception) from the Garmin GTX 3X5 is limited to line of sight. Low altitude or aircraft
antenna shielding by the aircraft itself may result in reduced range. Range can be
improved by climbing to a higher altitude.

NOTE

This product does not contain any user-serviceable parts. Repairs should only be
made by an authorized Garmin service center.

NOTE

It is the responsibility of the GTX 3X5 owner, residing outside of the U.S., to obtain
proper licensing before using the transponder.

iv GTX 335/345 Pilot’s Guide 190-01499-00 Rev. C

PRODUCT REGISTRATION AND SUPPORT

Product Registration and Support

Help us better support you by completing your online registration. To register, have your
product’s serial number on hand. Visit www.Garmin.com and click the Product
Registration link on the home page. Be sure to record your serial number in the space
provided below.

This guide is available electronically at: www.garmin.com/manuals

If you have any questions, the Garmin Product Support department can be reached
Monday through Friday, 7:00 AM to 7:00 PM CT.

US: 913-397-8200

US Toll Free: 1-866-739-5687

Canada Toll Free: 1-866-429-9296

Serial Number

:

Record of Revisions

Part Number Revision Date Description

190-01499-00 A

B

C

02/12/16

08/12/16

09/09/16

Initial release.

Added rotorcraft information.

Minor edits.

190-01499-00 Rev. C GTX 335/345 Pilot’s Guide v

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ABBREVIATIONS AND ACRONYMS

ABBREVIATIONS AND ACRONYMS

Abbreviations and Acronyms

Sources and References

Automatic Dependent Surveillance–Broadcast (ADS-B) is an important part of the FAA's
NextGEN effort. ADS-B is a precise GPS-based surveillance system that provides ATC
access to traffic data well beyond the capabilities of RADAR alone. It enables the display of
precise traffic data in cockpits equipped to receive ADS-B.

For more information about ADS-B, visit the Garmin ADS-B Academy website.
www.garmin.com/us/intheair/ads-b/

For more information about ADS-B and other NextGEN programs, visit the FAA NextGEN
website. www.faa.gov/nextgen/

ADS-B

Automatic Dependant Surveillance-Broadcast

ADS-R

Automatic Dependent Surveillance-Rebroadcast

AHRS

Attitude and Heading Reference System

ATC

Air Traffic Control

ATCRBS

Air Traffic Control Radar Beacon System

FIS-B

Flight Information Services-Broadcast

PED

Portable Electronic Device

PIREP

Pilot Report

SSR

Secondary Surveillance RADAR

TAS

Traffic Advisory System

TCAS

Traffic Collision Avoidance System

TFRs

Temporary Flight Restrictions

TIS

Traffic Information Service

TIS-B

Traffic Information Service-Broadcast

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TABLE OF CONTENTS

Table of Contents

1 GTX 3X5 Series Transponders ....................................................................................... 1-1

1.1 GTX 335 Transponder ................................................................................................... 1-1

1.2 GTX 345 Transponder ................................................................................................... 1-1

2 GTX 3X5 Controls ........................................................................................................... 2-1

2.1 Panel Mount Transponder Controls .................................................................................. 2-1

2.2 Mode Selection Keys ..................................................................................................... 2-1

2.3 Squawk Code Keys ....................................................................................................... 2-3

2.4 Function Keys ................................................................................................................ 2-4

2.5 Remote Transponder Control ........................................................................................ 2-4

3 Display Functions and Settings ..................................................................................... 3-1

3.1 Transponder (XPDR) ...................................................................................................... 3-1

3.2 Timers (TMR) ................................................................................................................. 3-2

3.3 Altitude (ALT) ................................................................................................................ 3-3

3.4 System (SYS) ................................................................................................................. 3-4

3.4.1 Bluetooth Pairing Instructions ................................................................................... 3-5

3.4.2 Bluetooth Paired Device Information ......................................................................... 3-5

4 ADS-B IN Traffic (GTX 345 Only) .................................................................................... 4-1

4.1 Traffic Alerting .............................................................................................................. 4-2

4.2 Helicopter Traffic Alerting ................................................................................................4-2

4.2.1 On Scene Mode ....................................................................................................... 4-2

4.2.2 No Source of Heading Data ...................................................................................... 4-3

4.3 TCAD/TAS/TCAS I GTX 345 Integration ......................................................................... 4-3

5 FIS-B Weather and Flight Information .......................................................................... 5-1

6 Connext Bluetooth ......................................................................................................... 6-1

7 Troubleshooting ............................................................................................................. 7-1

7.1 Transponder Failures ........................................................................................................ 7-1

7.2 Transponder System Messages ......................................................................................... 7-2

List of Figures

Figure 2-1 Squawk Code Entry Field .......................................................................................... 2-3

Figure 3-1 Flight ID Edit Display Page .........................................................................................3-1

Figure 3-2 Flight ID Editable Display Page .................................................................................. 3-1

Figure 3-3 Bluetooth Page ......................................................................................................... 3-5

Figure 3-4 Bluetooth Pair Request Page ..................................................................................... 3-5

Figure 3-5 Paired Device List Page .............................................................................................3-5

Figure 3-6 Auto-reconnect Page ................................................................................................ 3-5

Figure 3-7 Unpair Device? Page .................................................................................................3-6

Figure 3-8 (Selected) Bluetooth Device Name Page .................................................................... 3-6

Figure 7-1 ADS-B 1090 Failed Screen ......................................................................................... 7-1

Figure 7-2 ADS-B 1090 and Transponder Failed Screen .............................................................. 7-1

List of Tables

Table 2-1 Mode Section Key Functions ....................................................................................... 2-2

Table 2-2 Squawk Code Key Functions ....................................................................................... 2-3

Table 2-3 Function Keys ............................................................................................................. 2-4

Table 5-1 FIS-B Weather Products .............................................................................................. 5-2

Table 6-1 GTX 345 Connext Features ......................................................................................... 6-1

Table 7-1 Troubleshooting ......................................................................................................... 7-2

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GTX 3X5 XPDR

1 – GTX 3X5 SERIES XPDR

1 - GTX 3X5 SERIES XPDR

1 GTX 3X5 SERIES TRANSPONDERS

The GTX 3X5 Series Transponders are panel mount and remote transponders. Both

models are TSO-C112e (Level 2els, Class 1) compliant mode S transponders with
TSO-C166b compliant ADS-B Out 1090 MHz Extended Squitter functionality.

1.1 GTX 335 Transponder

GTX 335 Features:

• ADS-B Out

• TIS traffic display output and aural alerting

• Altitude deviation alerting

• Timers: count up, count down, flight, trip

• Static (Outside) air temperature display

• Density and pressure altitude display

• Internal GPS (Optional)

For more information on TIS traffic refer to the display’s operator’s manual and the FAA
Aeronautical Information Manual (AIM), 4-1-17.

1.2 GTX 345 Transponder

The GTX 345 includes ADS-B In functionality, when connected to a suitable display.
GTX 345 Features:

• ADS-B Out

• Dual-band ADS-B In traffic display output and aural alerting

• Integration with TCAD/TAS/TCAS I traffic systems

• FIS-B weather and flight information display output

• Bluetooth interface provides traffic, weather, and attitude data to a Portable
Electronic Device (PED)

• Altitude deviation alerting

• Timers: count up, count down, flight, trip

• Static (Outside) air temperature display

• Density and pressure altitude display

• Internal GPS (Optional)