Garmin G600 Manual

G600
Pilot’s
Guide

© 2008 Garmin Ltd. or its subsidiaries. All rights reserved.
This manual reflects the operation of System Software version 2.00, or later. Some differences in operation
may be observed when comparing the information in this manual to later software versions.
Garmin International, Inc., 1200 East 151st Street, Olathe, Kansas 66062, U.S.A.
Tel: [phone] Fax: [phone]
Garmin AT, Inc., 2345 Turner Road SE, Salem, OR 97302, U.S.A.
Tel: [phone] Fax [phone]
Garmin (Europe) Ltd., Liberty House, Bulls Copse Road, Hounsdown Business Park, Southampton, SO40
9RB, U.K.
Tel. [phone] Fax [phone]
Garmin Corporation, No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan
Tel: [phone] Fax: [phone]
www.garmin.com
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 written
permission 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 for personal
use, provided that such electronic or printed copy of this manual or revision must contain the complete text
of this copyright notice and provided further that any unauthorized commercial distribution of this manual
or any revision hereto is strictly prohibited.
Garmin® and G600™ are registered trademarks of Garmin Ltd. or its subsidiaries. FliteCharts™, and
SafeTaxi™ are trademarks of Garmin Ltd. or its subsidiaries. These trademarks may not be used without
the express permission of Garmin.
NavData® is a registered trademark of Jeppesen, Inc.; SkyWatch® is a registered trademark of L-3
Communications; and XM® is a registered trademark of XM Satellite Radio, Inc.
July 2008 Printed in the U.S.A.

i190-00601-02 Rev. B
Garmin G600 Pilot’s Guide
Foreword Sec 1 System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
Glossary Appendix A
Appendix B
Index
LIMITED WARRANTY
This Garmin product is warranted to be free from defects in materials or workmanship for two years from
the date of purchase. Within this 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
and labor, provided that the customer shall be responsible for any transportation cost. This warranty does
not cover failures due to abuse, misuse, accident, or unauthorized alterations or repairs.
THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER
WARRANTIES EXPRESS OR 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 THIS 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 the unit or software, or to 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.
To obtain warranty service, contact your local Garmin Authorized Service Center. For assistance in
locating a Service Center near you, visit the Garmin web site at http://www.garmin.com or contact
Garmin Customer Service at 800-800-1020.

ii
Garmin G600 Pilot’s Guide
190-00601-02 Rev. B
ForewordSec 1 System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
GlossaryAppendix A
Appendix B
Index
WARNING: Navigation and terrain separation must NOT be predicated
upon the use of the terrain function.The GDU 620Terrain Proximity feature
is NOT intended to be used as a primary reference for terrain avoidance
and does not relieve the pilot from the responsibility of being aware of
surroundings during flight.The Terrain Proximity feature is only to be used
as an aid for terrain avoidance and is not certified for use in applications
requiring a certified terrain awareness system. Terrain data is obtained
from third party sources. Garmin is not able to independently verify the
accuracy of the terrain data.
WARNING: The displayed minimum safe altitudes (MSAs) are only advisory
in nature and should not be relied upon as the sole source of obstacle and
terrain avoidance information.Always refer to current aeronautical charts
for appropriate minimum clearance altitudes.
WARNING: The Garmin GDU 620 has a very high degree of functional
integrity. However, the pilot must recognize that providing monitoring and/
or self-test capability for all conceivable system failures is not practical.
Although unlikely, it may be possible for erroneous operation to occur
without a fault indication shown by the GDU 620. It is thus the responsibility
of the pilot to detect such an occurrence by means of cross-checking with
all redundant or correlated information available in the cockpit.
WARNING: The altitude calculated by GPS receivers is geometric height
above Mean Sea Level and could vary significantly from the altitude
displayed by pressure altimeters, such as the output from the GDC 74A Air
Data Computer, or other altimeters in aircraft. GPS altitude should never
be used for vertical navigation. Always use pressure altitude displayed by
the GDU 620 PFD or other pressure altimeters in aircraft.
WARNING: Do not use outdated database information. Databases used
in the G600 system must be updated regularly in order to ensure that the
information remains current. Pilots using an outdated database do so
entirely at their own risk.
WARNING: Do not use basemap (land and water data) information for
primary navigation. Basemap data is intended only to supplement other
approved navigation data sources and should be considered as an aid to
enhance situational awareness.

iii190-00601-02 Rev. B
Garmin G600 Pilot’s Guide
Foreword Sec 1 System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
Glossary Appendix A
Appendix B
Index
WARNING: Traffic information shown on the GDU 620 Multi Function
Display is provided as an aid in visually acquiring traffic. Pilots must
maneuver the aircraft based only upon ATC guidance or positive visual
acquisition of conflicting traffic.
WARNING: XM Weather should not be used for hazardous weather
penetration.Weather information provided by the GDL 69/69A is approved
only for weather avoidance, not penetration.
WARNING: NEXRAD weather data is to be used for long-range planning
purposes only. Due to inherent delays in data transmission and the relative
age of the data, NEXRAD weather data should not be used for short-range
weather avoidance.
WARNING: For safety reasons, GDU 620 operational procedures must be
learned on the ground.
WARNING: To reduce the risk of unsafe operation, carefully review and
understand all aspects of the G600 Pilot’s Guide. Thoroughly practice
basic operation prior to actual use. During flight operations, carefully
compare indications from the GDU 620 to all available navigation sources,
including the information from other NAVAIDs, visual sightings, charts, etc.
For safety purposes, always resolve any discrepancies before continuing
navigation.
WARNING: Never use the GDU 620 to attempt to penetrate a thunderstorm.
Both the FAA Advisory Circular, Subject: Thunderstorms, and the Airman’s
Information Manual (AIM) recommend avoiding “by at least 20 miles any
thunderstorm identified as severe or giving an intense radar echo”.
CAUTION: The United States government operates the Global Positioning
System and is solely responsible for its accuracy and maintenance. The
GPS system is subject to changes which could affect the accuracy and
performance of all GPS equipment. Portions of the Garmin GDU 620 utilize
GPS as a precision electronic NAVigation AID (NAVAID).Therefore, as with
all NAVAIDs, information presented by the GDU 620 can be misused or
misinterpreted and, therefore, become unsafe.

iv
Garmin G600 Pilot’s Guide
190-00601-02 Rev. B
ForewordSec 1 System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
GlossaryAppendix A
Appendix B
Index
CAUTION: The Garmin GDU 620 does not contain any user-serviceable
parts. Repairs should only be made by an authorized Garmin service center.
Unauthorized repairs or modifications could void both the warranty and
the pilot’s authority to operate this device under FAA/FCC regulations.
CAUTION: The GDU 620 PFD and MFD displays use a lens coated with a
special anti-reflective coating that is very sensitive to skin oils, waxes, and
abrasive cleaners. CLEANERS CONTAINING AMMONIA WILL HARM THE
ANTI-REFLECTIVE COATING. It is very important to clean the lens using a
clean, lint-free cloth and an eyeglass lens cleaner that is specified as safe
for anti-reflective coatings.
NOTE: Interference from GPS repeaters operating inside nearby hangars
can cause an intermittent loss of attitude and heading displays while the
aircraft is on the ground. Moving the aircraft more than 100 feet away
from the source of the interference should alleviate the condition.
NOTE: All visual depictions contained within this document, including
screen images of the GDU 620 bezel and displays, are subject to change
and may not reflect the most current GDU 620 system. Depictions of
equipment may differ slightly from the actual equipment.
NOTE: This device complies with part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
NOTE: 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.

v190-00601-02 Rev. B
Garmin G600 Pilot’s Guide
Foreword Sec 1 System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
Glossary Appendix A
Appendix B
Index
Record of Revisions
Part Number Revision Date Page
Range Description
190-00601-02 A
B
6/10/08
7/8/08
All Production release
Update information

vi
Garmin G600 Pilot’s Guide
190-00601-02 Rev. B
ForewordSec 1 System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
GlossaryAppendix A
Appendix B
Index
This page intentionally left blank

vii190-00601-02 Rev. B
Garmin G600 Pilot’s Guide
Foreword Sec 1 System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
Glossary Appendix A
Appendix B
Index
Contents
1 System Overview .................................................................................1-1
1.1 System Description................................................................................ 1-1
1.1.1 Line Replaceable Units (LRU) ................................................. 1-2
1.1.2 GDU 620 .............................................................................. 1-3
1.1.3 GDC 74A .............................................................................. 1-3
1.1.4 GRS 77 ................................................................................. 1-4
1.1.5 GMU 44................................................................................ 1-4
1.1.6 GTX 330/330D (Optional)......................................................1-5
1.1.7 GTP 59 ................................................................................. 1-5
1.1.8 GDL 69/69A (Optional)..........................................................1-6
1.1.9 Garmin Navigator Interface....................................................1-6
1.1.10 Attitude Heading Reference System (AHRS)............................ 1-7
1.1.11 Secure Data Cards................................................................. 1-8
1.1.12 Pilot Controls ........................................................................ 1-8
1.1.12.1 PFD Knob..............................................................................1-8
1.1.12.2 PFD Bezel Keys......................................................................1-9
1.1.12.3 PFD Soft Keys ...................................................................... 1-10
1.1.12.4 MFD Knobs ......................................................................... 1-11
1.1.12.5 MFD Bezel Keys................................................................... 1-12
1.1.12.6 MFD Soft Keys..................................................................... 1-12
1.2 System Power Up................................................................................ 1-13
1.3 System Operation................................................................................ 1-14
1.3.1 Using the Page Menus......................................................... 1-14
1.3.1.1 Navigating a Menu.............................................................. 1-15
1.3.2 Using the Soft Key Controls ................................................. 1-15
1.3.3 System Settings ................................................................... 1-16
1.3.4 Display Backlighting ............................................................ 1-19
1.3.5 Dual GDU 620 Installations ................................................. 1-19
1.3.5.1 Crossfill Information ............................................................1-19
1.3.5.2 Crossfill Selection ................................................................1-20
2 Primary Flight Display (PFD) ................................................................2-1
2.1 PFD Soft Key Map .................................................................................2-2
2.2 Airspeed Indicator................................................................................. 2-2
2.2.1 Markings............................................................................... 2-3

viii
Garmin G600 Pilot’s Guide
190-00601-02 Rev. B
ForewordSec 1 System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
GlossaryAppendix A
Appendix B
Index
2.2.2 Reference Speeds .................................................................. 2-5
2.3 Attitude Indicator..................................................................................2-5
2.3.1 Extreme Attitude ...................................................................2-7
2.4 Altimeter ..............................................................................................2-8
2.4.1 Setting the Altitude Bug/Altitude Alerting...............................2-9
2.4.2 Changing Barometric Setting ............................................... 2-10
2.5 Vertical Speed (V/S) Indicator .............................................................. 2-10
Setting the Vertical Speed Indicator Bug................................................2-11
2.6 Horizontal Situational Indicator ........................................................... 2-12
2.6.1 Setting the Heading Bug...................................................... 2-13
2.6.2 Turn Rate Indicator .............................................................. 2-14
2.7 Course Deviation Indicator .................................................................. 2-14
2.7.1 Changing CDI Sources......................................................... 2-15
2.7.2 Changing CDI Course ..........................................................2-16
2.7.3 Vertical Deviation Indicator (VDI) ......................................... 2-16
2.7.4 Auto-Slewing ......................................................................2-17
2.8 Supplemental Flight Data.................................................................... 2-19
2.8.1 Bearing Pointers.................................................................. 2-19
2.8.2 Temperature Display............................................................2-21
3 Multi-Function Display (MFD) ..............................................................3-1
3.1 Functional Display Map.........................................................................3-2
3.2 MFD Soft Key Map................................................................................ 3-3
3.3 Navigation Map Pages ..........................................................................3-4
3.3.1 Default Navigation Page........................................................ 3-5
3.3.2 Editing Information................................................................ 3-5
3.3.3 Selecting Page Options.......................................................... 3-5
3.3.4 Changing the Navigation Map Range .................................... 3-5
3.3.5 Decluttering Map Pages......................................................... 3-6
3.3.7 Selecting Items on the Map ...................................................3-9
3.3.8 Measuring Distances ........................................................... 3-10
3.3.2 Customizing Navigation Map Pages.....................................3-11
3.3.3 Map Setup .......................................................................... 3-11
3.3.3.1 Map Feature Options........................................................... 3-13
3.3.3.2 Weather Feature Options (Optional).....................................3-28
3.3.3.3 Traffic Feature Options (Optional)......................................... 3-32
3.3.3.4 Aviation Feature Options ..................................................... 3-33
3.4 Aux Mode Pages................................................................................. 3-46

ix190-00601-02 Rev. B
Garmin G600 Pilot’s Guide
Foreword Sec 1 System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
Glossary Appendix A
Appendix B
Index
3.4.1 System Settings ................................................................... 3-46
3.4.1.1 Display Brightness ............................................................... 3-47
3.4.1.2 Airspeed Reference Marks ................................................... 3-48
3.4.1.3 Synchronization (Dual Installations Only).............................. 3-49
3.4.1.4 Date and Time.....................................................................3-50
3.4.1.5 MFD Display Units...............................................................3-52
3.4.1.6 System Display Units ...........................................................3-52
3.4.2 XM Information (Optional)................................................... 3-54
3.4.3 XM Entertainment Radio (Optional) ..................................... 3-55
3.4.4 System Status...................................................................... 3-56
3.5 Flight Plan Pages ................................................................................3-57
3.5.1 Active Flight Plan Page ........................................................3-57
3.5.1.1 Active Flight Plan Detail....................................................... 3-58
3.5.1.2 Active Flight Plan Options.................................................... 3-58
3.5.2 Waypoint Information Page .................................................3-60
3.5.2.1 Selecting a Waypoint ...........................................................3-60
3.5.2.2 Waypoint Weather Detail (Optional)..................................... 3-61
3.5.2.3 Waypoint Information Detail................................................ 3-62
3.5.2.2 Waypoint Weather Information (Optional) ............................ 3-64
3.5.3 Charts Page (Optional) ........................................................ 3-65
3.5.3.1 Viewing Charts....................................................................3-66
3.5.3.2 Selecting a New Chart by Airport ......................................... 3-67
3.5.3.3 Selecting a New Chart by FPL, NRST, or RECENT................... 3-68
3.5.3.4 Change Day/Night View.......................................................3-68
4 Hazard Avoidance ................................................................................4-1
4.1 Terrain.................................................................................................. 4-1
4.1.1 Displaying Terrain ..................................................................4-2
4.1.1.1 Terrain Page 120°Arc or 360°Rings...................................... 4-3
4.1.1.2 Terrain Page Aviation Data..................................................... 4-4
4.1.2 Terrain Alerts......................................................................... 4-6
4.1.3 Limitations ............................................................................4-7
4.1.4 System Status........................................................................ 4-7
4.2 TAS Traffic (Optional)............................................................................. 4-8
4.2.1 Displaying and Operating Traffic (TAS Systems).......................4-8
4.2.1.1 Switching from Standby Mode to Operating Mode ................. 4-8
4.2.1.2 Range Ring ...........................................................................4-9
4.2.2 Altitude Display................................................................... 4-10

x
Garmin G600 Pilot’s Guide
190-00601-02 Rev. B
ForewordSec 1 System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
GlossaryAppendix A
Appendix B
Index
4.2.2.1 Changing the altitude display mode:....................................4-10
4.2.3 TAS Symbology.................................................................... 4-11
4.2.4 Traffic System Status............................................................ 4-12
4.2.5 Traffic Pop-Up......................................................................4-14
4.3 TIS Traffic (Optional)............................................................................4-15
4.3.1 Traffic Map Page..................................................................4-15
4.3.1.1 Displaying traffic on the Traffic Map Page............................. 4-16
4.3.2 TIS Symbology..................................................................... 4-17
4.3.3 TIS Limitations..................................................................... 4-18
4.3.4 TIS Alerts............................................................................. 4-20
4.3.5 TIS System Status ................................................................ 4-21
4.3.5.1 Switching Between TIS Operating Modes ............................. 4-22
4.4 XM Weather (Optional) ....................................................................... 4-24
4.4.1 Using XM Satellite Weather Products ................................... 4-24
4.4.2 Customizing the XM Weather Map ...................................... 4-24
4.4.3 XM Weather Symbols and Product Age ................................4-27
4.4.4 Weather Legends ................................................................ 4-29
4.4.5 NEXRAD .............................................................................4-30
4.4.5.1 Reflectivity ..........................................................................4-31
4.4.5.2 NEXRAD Limitations............................................................4-32
4.4.5.2 NEXRAD Data Viewing Range.............................................. 4-33
4.4.6 Echo Tops............................................................................ 4-34
4.4.7 Cloud Tops .......................................................................... 4-36
4.4.8 XM Lightning ...................................................................... 4-38
4.4.9 Cell Movement.................................................................... 4-39
4.4.10 SIGMETs and AIRMETs ........................................................4-41
4.4.11 METARs .............................................................................. 4-43
4.4.12 Surface Analysis and City Forecast........................................ 4-45
4.4.13 Freezing Level......................................................................4-48
4.4.14 Winds Aloft .........................................................................4-50
4.4.15 County Warnings................................................................. 4-53
5 Additional Features (Optional) ............................................................5-1
5.1 Viewing Charts .....................................................................................5-2
5.1.1 Chart Panning .......................................................................5-3
5.1.2 Choosing a Chart for the Current Airport................................ 5-4
5.1.3 Selecting a Chart by Identifier................................................ 5-5
5.1.4 Selecting a New Chart by FPL, NRST, or RECENT.....................5-6

xi190-00601-02 Rev. B
Garmin G600 Pilot’s Guide
Foreword Sec 1 System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
Glossary Appendix A
Appendix B
Index
5.1.5 Viewing Chart NOTAMs ......................................................... 5-7
5.1.6 Day/Night View .....................................................................5-7
5.2 ChartView ............................................................................................5-8
5.2.1 Cycle Number and Revision ................................................... 5-8
5.3 FliteCharts .......................................................................................... 5-11
5.3.1 Cycle Number and Revision ................................................. 5-11
5.4 Safe Taxi .............................................................................................5-13
5.4.1 Using SafeTaxi..................................................................... 5-14
5.4.2 SafeTaxi Cycle Number and Revision ....................................5-14
5.5 XM Radio Entertainment..................................................................... 5-16
5.5.1 Activating XM Satellite Radio Services.................................. 5-16
5.5.2 XM Information................................................................... 5-18
5.5.3 XM Entertainment Radio ..................................................... 5-19
5.5.3.1 Channel Categories............................................................. 5-20
5.5.3.2 Selecting an XM Radio Channel...........................................5-21
5.5.3.3 XM Radio Volume................................................................ 5-22
5.5.3.4 XM Radio Channel Presets...................................................5-23
5.5.4 GDL 69/69A Data Link Receiver Troubleshooting.................. 5-24
5.6 Autopilot Operation ............................................................................5-25
5.6.1 Heading .............................................................................. 5-25
5.6.2 Altitude Capture (Optional Interface) ................................... 5-25
5.6.3 Autopilot Navigation ........................................................... 5-26
5.6.3.1 Autopilot Operation with GPSS Enabled Autopilots............... 5-26
5.6.3.2 Autopilot Operation with the GDU 620 Emulating GPSS ...... 5-27
6 Annunciations and Alerts.....................................................................6-1
6.1 Alerts ...................................................................................................6-1
6.2 System Status ....................................................................................... 6-8
7 Symbols................................................................................................7-1
7.1 Map Page Symbols................................................................................7-1
7.2 SafeTaxi Symbols................................................................................... 7-2
7.3 Traffic Symbols...................................................................................... 7-2
7.4 Terrain Obstacle Symbols....................................................................... 7-3
7.5 Basemap Symbols................................................................................. 7-4
7.6 Map Toolbar Symbols............................................................................ 7-4
7.7 XM Weather Toolbar Symbols................................................................ 7-5
7.8 Miscellaneous Symbols..........................................................................7-6
8 Glossary ...............................................................................................8-1

xii
Garmin G600 Pilot’s Guide
190-00601-02 Rev. B
ForewordSec 1 System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
GlossaryAppendix A
Appendix B
Index
Appendix A ................................................................................................. A-1
SD Card Use and Databases ..........................................................................A-1
Jeppesen Databases...............................................................................A-1
Updating the Jeppesen navigation database...........................................A-1
Garmin Databases..................................................................................A-2
Updating Garmin databases...................................................................A-3
Index........................................................................................................... B-1

1-1190-00601-02 Rev. B
Garmin G600 Pilot’s Guide
Foreword
Sec 1
System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
Glossary Appendix A
Appendix B
Index
1 SYSTEM OVERVIEW
1.1 System Description
This section provides an overview of the G600 Avionics Display System.
The G600 system is an integrated display system that presents primary flight
instrumentation, navigation, and a moving map to the pilot through large-
format displays.
In normal operating mode, the Primary Flight Display (PFD) presents
graphical flight instrumentation (attitude, heading, airspeed, altitude, vertical
speed), replacing the traditional flight instrument cluster. The Multi-Function
Display (MFD) normally displays a full-color moving map with navigation
information.
Figure 1-1 G600 System (LRU Configuration)
The system consists of the following Line Replaceable Units (LRUs):
• GDU 620 Primary Flight Display (PFD) and Multi Function Display
(MFD)
• GDC 74A Air Data Computer (ADC)
• GRS 77 Attitude and Heading Reference System (AHRS)
• GNS 480, CNX80, GNS 400W series, or GNS 500W series GPS

1-2
Garmin G600 Pilot’s Guide
190-00601-02 Rev. B
Foreword
Sec 1
System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
GlossaryAppendix A
Appendix B
Index
Navigator
• Temperature Probe (such as the GTP 59)
• GMU 44 Magnetometer
• GTX 330/330D Mode S Transponder (optional)
• GDL 69A Satellite Data Link Receiver (optional)
• SL30 NavCom (optional)
• Autopilot (optional)
• ADF (optional)
• Traffic (optional: TAS and TIS)
• Audio Panel (optional)
1.1.1 Line Replaceable Units (LRU)
This guide covers the operation of the GDU 620 as integrated in the G600
system. The G600 Avionics Display System is an advanced technology avionics
suite designed to replace the traditional flight instrument cluster. The system
combines primary flight instrumentation, navigational information, and a moving
map all displayed on dual 6.5” color screens. The G600 system is composed of
sub-units or Line Replaceable Units (LRUs). LRUs have a modular design and
can be installed directly behind the instrument panel or in a separate avionics
bay if desired. This design greatly eases troubleshooting and maintenance of the
G600 system. A failure or problem can be isolated to a particular LRU, which
can be replaced quickly and easily. Each LRU has a particular function, or set of
functions, that contributes to the system’s operation.

1-3190-00601-02 Rev. B
Garmin G600 Pilot’s Guide
Foreword
Sec 1
System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
Glossary Appendix A
Appendix B
Index
1.1.2 GDU 620
The GDU 620 has dual VGA (640 x 480 pixels) 6.5-inch LCD displays. The
left side of the GDU is a PFD and the right side is the MFD. The MFD shows
a moving map, flight plan, weather, and more. The PFD shows primary flight
information, in place of traditional pitot-static and gyroscopic systems and also
provides an HSI for navigation. The GDU 620 PFD does not have a reversionary
mode.
Figure 1-2 GDU 620 PFD and MFD
1.1.3 GDC 74A
The GDC 74A air data computer compiles information from the pitot/static
system and an outside air temperature (OAT) sensor. The GDC 74A provides
pressure altitude, airspeed, vertical speed, and OAT information to the G600
system. The GDC 74A communicates with the GDU 620 and GRS 77 using an
ARINC 429 digital interface.
Figure 1-3 GDC 74A Air Data Computer

1-4
Garmin G600 Pilot’s Guide
190-00601-02 Rev. B
Foreword
Sec 1
System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
GlossaryAppendix A
Appendix B
Index
1.1.4 GRS 77
The GRS 77 is an Attitude and Heading Reference System (AHRS) unit that
provides aircraft attitude information to the G600 display. The unit contains
advanced tilt sensors, accelerometers, and rate sensors. In addition, the
GRS 77 interfaces with both the GDC 74A Air Data computer and the GMU 44
magnetometer. The GRS 77 also utilizes GPS data forwarded from the GDU 620.
Actual attitude and heading information is sent using an ARINC 429 digital
interface to the GDU 620.
Figure 1-4 GRS 77 AHRS
The IGRF (International Geomagnetic Reference Field) model is contained in
the GRS 77 and is only updated once every five years. The IGRF model is part
of the Navigation Database. At system power-up, the IGRF models in the GRS
77 and in the Navigation Database are compared, and if the IGRF model in the
GRS 77 is out of date, the user is prompted to update the IGRF model in the
GRS 77. The prompt will appear after the G600 splash screen is acknowledged
on the MFD.
1.1.5 GMU 44
The GMU 44 magnetometer senses the earth’s magnetic field. Data is sent to
the GRS 77 AHRS for processing to determine aircraft magnetic heading. This
unit receives power directly from the GRS 77 and communicates with the GRS
77 using a RS-485 digital interface.
Figure 1-5 GMU 44 Magnetometer

1-5190-00601-02 Rev. B
Garmin G600 Pilot’s Guide
Foreword
Sec 1
System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
Glossary Appendix A
Appendix B
Index
1.1.6 GTX 330/330D (Optional)
Figure 1-6 GTX 330/330D Mode S Transponder
The GTX 330/330D is a solid-state transponder that provides Modes A, C,
and S functions. The transponder provides traffic information to the display
through an ARINC 429 digital interface.
NOTE: GTX 33/33D can also be used to display traffic information on the
GDU 620. GTX 33/33D transponders must be interfaced to a GNS 480 for
mode control and squawk code entry.
1.1.7 GTP 59
A temperature probe provides Outside Air Temperature (OAT) data to the
on-side GDC 74A. The GTP 59 is an example of an appropriate temperature
probe.
Figure 1-7 GTP 59 Temperature Probe

1-6
Garmin G600 Pilot’s Guide
190-00601-02 Rev. B
Foreword
Sec 1
System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
GlossaryAppendix A
Appendix B
Index
1.1.8 GDL 69/69A (Optional)
The GDL 69/69A is an XM Satellite Radio data link receiver that receives
broadcast weather data. The GDL 69A is the same as the GDL 69 with the
addition of an XM Satellite Radio audio entertainment receiver. Weather data
and control of audio channel and volume is displayed on the MFD, via a High-
Speed Data Bus (HSDB) Ethernet connection. The GDL 69A is also interfaced
to an audio panel for distribution of the audio signal. A subscription to the XM
Satellite Radio service is required to enable the GDL 69/69A capability.
Figure 1-8 GDL 69/69A XM Satellite Radio Data Link Receiver
1.1.9 Garmin Navigator Interface
The G600 system requires connection to at least one external Garmin WAAS
GPS navigator, such as the 400W/500W series or GNS 480.