Garmin GDL 82 User Manual

Instructions for Continued Airworthiness & Maintenance Manual,

GDL 82 Mooney M20( ) Series STC

Aircraft make, model, registration number, and serial number and accompanying STC configuration information in Appendix A must be completed and retained with aircraft permanent records.

190-01810-11

September 2019

Revision 2

©2019 Garmin International or its subsidiaries All Rights Reserved

Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded or stored in any storage medium, for any purpose without the express prior written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto, provided such electronic or printed copy of this manual or revision must contain the complete text of this copyright notice and provided further any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.

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At Garmin, we value your opinion. For comments about this guide please e-mail: [e-mail].

For information regarding the Aviation Limited Warranty, refer to Garmin’s website.

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		RECORD OF REVISIONS
Revision	Revision Date	Description
1	12/14/2017	Initial Release
2	09/23/2019	Update to add GPS 175/GNC 355 as GPS sources, and to update main
		board and GPS/GBAS board software versions (non-functional)

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INFORMATION SUBJECT TO EXPORT CONTROL LAWS

This document may contain information which is subject to the Export Administration Regulations (“EAR”) issued by the United States Department of Commerce (15 CFR, Chapter VII, Subchapter C) and which may not be exported, released, or disclosed to foreign nationals inside or outside of the United States without first obtaining an export license. A violation of the EAR may be subject to a penalty of up to 10 years imprisonment and a fine of up to $1,000,000 under Section 2410 of the Export Administration Act of 1979. Include this notice with any reproduced portion of this document.

DEFINITIONS OF WARNINGS, CAUTIONS, AND NOTES

WARNING

Warnings indicates that personal injury or death is possible if the instructions are not obeyed.

CAUTION

Cautions are used to alert that damage to equipment may result if the procedural step is not followed.

NOTE

Notes provide further information about preceding steps and/or reasons for the particular operation.

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 web site at www.garmin.com/prop65.

NOTE

All screen shots used in this document are current at the time of publication. Screen shots are intended to provide visual reference only. All information depicted in screen shots, including software file names, versions, and part numbers, is subject to change and may not be up to date.

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		TABLE OF CONTENTS
SECTION ...........................................................................................................................................			PAGE
1	INTRODUCTION ...................................................................................................................................		1
	1.1	Introduction......................................................................................................................................	1
	1.2	Organization.....................................................................................................................................	1
	1.3	Acronyms and Abbreviations ..........................................................................................................	1
	1.4	Publications......................................................................................................................................	2
	1.5	Revision and Distribution ................................................................................................................	2
2	SYSTEM DESCRIPTION.......................................................................................................................		3
3	CONTROL & OPERATION...................................................................................................................		4
	3.1	GDL 82 Install Tool.........................................................................................................................	4
4	INSTRUCTIONS FOR CONTINUED AIRWORTHINESS ..................................................................		8
	4.1	Airworthiness Limitations ...............................................................................................................	8
	4.2	Servicing Information ......................................................................................................................	8
	4.3	Maintenance Intervals......................................................................................................................	9
	4.4	Visual Inspection ...........................................................................................................................	10
	4.5	Electrical Bonding Test..................................................................................................................	11
5	TROUBLESHOOTING ........................................................................................................................		12
	5.1	General...........................................................................................................................................	12
	5.2	ADS-B OUT FAIL Annunciator ...................................................................................................	14
	5.3	GDL 82 Install Tool.......................................................................................................................	14
	5.4	GDL 82 Data Logging ...................................................................................................................	16
	5.5	GDL 82 Connector Pinout .............................................................................................................	17
6	EQUIPMENT REMOVAL & INSTALLATION .................................................................................		18
	6.1	GDL 82 Unit ..................................................................................................................................	18
	6.2	Annunciator and Switch.................................................................................................................	18
	6.3	GPS Antenna..................................................................................................................................	19
	6.4	Transponder Antenna.....................................................................................................................	19
7	EQUIPMENT CONFIGURATION & CHECKOUT............................................................................		20
	7.1	System Checkout ...........................................................................................................................	20
	7.2	GDL 82 Configuration...................................................................................................................	20
	7.3	GDL 82 Post-Installation Test Procedures.....................................................................................	21
8	RETURN TO SERVICE PROCEDURE...............................................................................................		21
	8.1	Maintenance Records.....................................................................................................................	21

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FIGURES
FIGURE	PAGE
Figure 2-1: GDL 82 System I/O Interfaces......................................................................................	3
Figure 3-1: USB A and USB B Connectors.....................................................................................	4
Figure 3-2: GDL 8X Install Tool Selection .....................................................................................	4
Figure 3-3: GDL 82 Unit Information Page.....................................................................................	5
Figure 3-4: GDL 82 Software Upload Page.....................................................................................	6
Figure 3-5: GDL 82 System Configuration Page.............................................................................	7
Figure 5-1: GDL 82 Install Tool, Faults Page ...............................................................................	15
Figure 5-2: GDL 82 Install Tool, GPS Page ..................................................................................	15
Figure 5-3: GDL 82 Install Tool, GPS Sat Status Page .................................................................	16
Figure 5-4: GDL 82 Install Tool, Assert Log Page........................................................................	16
Figure 5-5: Rear View, Connector J821 ........................................................................................	17
TABLES
TABLE	PAGE
Table 1-1: Recommended Documents............................................................................................	2
Table 4-1: Maintenance Intervals ....................................................................................................	9
Table 5-1: General Troubleshooting Guide ...................................................................................	12
Table 5-2: System Faults Troubleshooting Guide .........................................................................	13
Table 5-3: J821 Pinout ...................................................................................................................	17

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1 INTRODUCTION

1.1Introduction

This document provides Instructions for Continued Airworthiness (ICA) and Maintenance Manual (MM) for the Garmin GDL 82 UAT Transmitter as installed in Mooney M20() Series aircraft under STC SA02573SE. This document satisfies the requirements for continued airworthiness as defined by 14 CFR Part 23.1529 and Appendix G. Information in this document is required to maintain the continued airworthiness of the GDL 82.

1.2Organization

The following outline briefly describes the organization of this manual:

Section 2: System Description

Provides a complete description of the type design change associated with installing the GDL 82. An overview of the system interface is also provided.

Section 3: Control & Operation

Presents basic control and operation information related to maintenance of the GDL 82.

Section 4: Instructions for Continued Airworthiness

Provides maintenance instructions for continued airworthiness of the GDL 82.

Section 5: Troubleshooting

Provides troubleshooting information to aid in diagnosing and resolving potential problems with the GDL 82.

Section 6: Equipment Removal & Installation

Contains instructions for the removal and installation of the GDL 82.

Section 7: Equipment Configuration & Checkout

Contains instructions for configuring and testing the GDL 82 after reinstallation or replacement.

Section 8: Return to Service Procedure

Specifies return-to-service procedures required after completion of the GDL 82 maintenance.

Appendix A: Installation Specific Information

Provides a template to record general installation information and the system configuration log for a specific installation of the GDL 82.

1.3Acronyms and Abbreviations

The following acronyms are used in this manual:

	AC	Advisory Circular	ICA	Instructions for Continued Airworthiness
	ADS-B	Automatic Dependent Surveillance –	ICAO	International Civil Aviation Organization
		Broadcast
	AFM	Airplane Flight Manual	I/O	Input / Output
	AFMS	Airplane Flight Manual Supplement	IM	Installation Manual
	ALT	Altitude	MM	Maintenance Manual
	ATC	Air Traffic Control	PC	Personal Computer
	CFR	Code of Federal Regulations	POH	Pilot Operating Handbook
	DC	Direct Current	SBAS	Satellite-Based Augmentation System

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ELA	Electrical Load Analysis	STC
EMC	Electromagnetic Checkout	SW
FAA	Federal Aviation Administration	UAT
GDL	Garmin Datalink Transceiver	USB
GNS	Garmin Navigator Series	Vs0
GPS	Global Positioning System	XPDR
GTN	Garmin Touch Navigator

Supplemental Type Certificate Software

Universal Access Transceiver Universal Serial Bus

Aircraft Stall Speed (in landing configuration)

Transponder

1.4Publications

When performing GDL 82 system maintenance it is recommended the following documents are available.

		Table 1-1: Recommended Documents
Part Number	Garmin Document
190-01810-03	GDL 82	Pilot's Quick Start Guide
190-01810-10	GDL 82	Mooney M20() Series STC Installation Manual
190-01810-12	Airplane Flight Manual Supplement for the GDL 82 Mooney M20 Series

1.5Revision and Distribution

This document is required for maintaining the continued airworthiness of the aircraft. When this document is revised, every page will be revised to indicate current revision level.

Owner/operators may obtain the latest revision of this document at www.flyGarmin.com or by contacting a Garmin dealer. Garmin contact information is available at www.flyGarmin.com.

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2 SYSTEM DESCRIPTION

The GDL 82 is a remote-mounted unit that contains 978 MHz and 1030 MHz transmitters, and a 1090 MHz receiver. It is installed in-line with the existing transponder and L-Band antenna. The GDL 82 transmits ownship ADS-B Out data via the UAT data link using the existing transponder’s L-Band antenna. The GDL 82 utilizes the direct in-line connection to synchronize with the aircraft transponder via 1030 MHz interrogations to obtain the transponder Squawk (Mode 3/A) code, IDENT status and pressure altitude.

ADS-B equipment requires GPS/SBAS data for ADS-B Out transmissions. Only the GPS/SBAS data sources specified in the GDL 82 Mooney M20() Series STC Installation Manual, 190-01810-10, are approved by this STC to interface with the GDL 82.

The GDL 82 uses the following interfaces:

•Aircraft Power and Ground

•Transponder Coaxial Connection

•L-Band Coaxial Connection

•GPS Coaxial Connection – Used only for internal GPS source

•1 RS-232 I/O – Used only for external GPS source

•1 Discrete Output – Failure Annunciator (optional)

•2 Discrete Inputs – Anonymous Mode Switch and Squat Switch (optional)

•USB Interface – Configuring GDL 82 and Loading Software from PC

The GDL 82 System Interface Diagram is shown in Figure 2-1.

GDL 82

Bottom L-Band Antenna

Transponder	Coax
Power/Ground
OPTIONAL
Failure	Discrete
Annunciator
Anonymous	Discrete
Mode Switch
Squat/WOW	Discrete
Switch

Coax
	GPS Antenna
Coax
(GDL 82 with GPS only)
	OR
RS-232
GPS Time Mark	GPS Source
USB	PC Config
	Tool

Figure 2-1: GDL 82 System I/O Interfaces

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3 CONTROL & OPERATION

The GDL 82 user control interface is limited to ADS-B OUT FAIL annunciator and the UAT ANONYMOUS mode switch, installation of either or both is optional. The primary ADS-B Out UAT transmit function of the GDL 82 does not require direct user input.

Refer to the GDL 82 Pilot’s Quick Start Guide, 190-01810-03, and the Airplane Flight Manual Supplement for the GDL 82 Mooney M20 Series, 190-01810-12, for control and operation information.

3.1GDL 82 Install Tool

The GDL 8X Install Tool (Garmin Part Number: 006-A0248-20) allows for configuration, diagnostics, and software loading. The tool is available for download from the Garmin Dealer Resource Center and flyGarmin.com. The GDL 8X Install Tool requires a computer with Microsoft Windows XP or later and an available USB 2.0 port.

A USB A-to-B cable is required to interface between a computer and the GDL 82, refer to Figure 3-1 for details.

Figure 3-1: USB A and USB B Connectors

The GDL 82 Install Tool provides access to the following functions -

•Diagnostics – reports device information, faults, interface status and other information for post installation checkout procedures. It also allows the unit assert log to be saved and cleared.

•Configuration – allows selection of installation options.

•System Update – allows upload of software to the GDL 82 unit.

To utilize the GDL 82 Install Tool, first disconnect power from the GDL 82, and then connect the USB cable. Restore power to the GDL 82, and then run the GDL 8X Install Tool.

The GDL 8X Install Tool will automatically detect which unit it is interfaced with (e.g., GDL 82 or GDL 84/88). To use the GDL 82 Install Tool verify that the GDL 82 unit is checked Present and select the GDL 82 button. See Figure 3-2.

Figure 3-2: GDL 8X Install Tool Selection

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NOTE

When the GDL 82 unit is connected to the PC (via USB) and the GDL 8X Install Tool is active, the GDL 82 will automatically be placed in Configuration Mode. To reset the GDL 82 into Normal Mode, power down the unit, disconnect it from the USB and reapply power to the GDL 82.

3.1.1Device Information

The Unit Information page, displays product information such as the model, part number, serial numbers, software version and software part numbers to be viewed.

Figure 3-3: GDL 82 Unit Information Page

The other Diagnostics pages are used during post-installation checkout and troubleshooting. See Section 5.3 for details.

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