Garmin GPS 400 series installation manual 430 420
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GNC and GNS are trademarks of Garmin Ltd. or its subsidiaries
and may not be used without the express permission of Garmin.
(GNS 430 Shown)
190-00140-02, Revision M
July 2004
400 SERIES
INSTALLATION MANUAL
GPS 400, GNC
TM
420 (A), and GNS
TM
430 (A)
Page A 400 SERIES INSTALLATION MANUAL
Rev M P/N 190-00140-02
© Copyright 1998 - 2004
Garmin Ltd. 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 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 International, Inc.
1200 E. 151
st
Street
Olathe, KS 66062 USA
Telephone: 913-397-8200
Aviation Panel-Mount Technical Support Line (Toll Free): 1-888-606-5482
Web Site Address: www.garmin.com
Garmin (Europe) Ltd.
Unit 5, The Quadrangle
Abbey Park Industrial Estate
Romsey, SO51 9DL U.K.
Telephone: 44/1794.519944
RECORD OF REVISIONS
Revision Revision
Date
Description ECO #
A 6/19/98 Initial Release ----
B 10/22/98 General update 9891
C 11/11/98 Add 18 AWG pin positioner and insertion/extraction
tools. Add King Serial DME tuning interface description.
10008
D 3/18/99 Add GNC 420, GPS 400, ARINC 429, GPS King Serial
OBI, RS-232 Fuel/Air Data Inputs
10665
E 6/25/99 Reflect changes to configuration pages, Misc corrections 11243
F 10/13/99 Add interface to BF Goodrich Stormscope and Skywatch
and Ryan TCAD
11871
G 4/27/00 Update installation accessory kits 13205
H 9/1/00 Add unit versions with 14/28 volt transmitter. Update
configuration pages.
14026
J 2/22/01 Update configuration pages. 15207
K 5/22/02 Add gray unit and 16 watt “A” versions. Update
configuration pages.
18149
L 12/13/02 Add Fault Detection and Exclusion 19779
M 7/6/04 Added TSO limitation 26552
400 SERIES INSTALLATION MANUAL Page i
P/N 190-00140-02 Rev M
This manual is written for software version 4.02, and is not suitable for earlier software versions.
Information in this document is subject to change without notice. Visit the Garmin web site
(www.garmin.com) for current updates and supplemental information concerning the operation of
this and other Garmin products.
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.
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.
Page ii 400 SERIES INSTALLATION MANUAL
Rev M P/N 190-00140-02
TABLE OF CONTENTS
1. GENERAL DESCRIPTION
1.1 INTRODUCTION ..........................................................................................................................................1-1
1.2 EQUIPMENT DESCRIPTION ......................................................................................................................1-1
1.3 TECHNICAL SPECIFICATIONS ..................................................................................................................1-2
1.4 TSO LIMITATIONS ......................................................................................................................................1-7
1.5 LICENSE REQUIREMENTS .........................................................................................................................1-7
1.6 CERTIFICATION...........................................................................................................................................1-7
1.7 FAULT DETECTION AND EXCLUSION (FDE) ......................................................................................1-7
1.8 LIMITED WARRANTY ................................................................................................................................1-8
2. INSTALLATION
2.1 INTRODUCTION ..........................................................................................................................................2-1
2.2 ANTENNA CONSIDERATIONS ..................................................................................................................2-1
2.3 RACK CONSIDERATIONS ..........................................................................................................................2-3
2.4 CABLING AND WIRING..............................................................................................................................2-3
2.5 COOLING AIR ...............................................................................................................................................2-3
2.6 MINIMUM INSTALLATION REQUIREMENTS......................................................................................2-3
3. INSTALLATION PROCEDURE
3.1 UNIT AND ACCESSORIES...........................................................................................................................3-1
3.2 DATA BASE OPTIONS .................................................................................................................................3-4
3.3 MISCELLANEOUS OPTIONS......................................................................................................................3-4
3.4 INSTALLATION ACCESSORIES REQUIRED BUT NOT PROVIDED ...................................................3-4
3.5 ANTENNA INSTALLATION .......................................................................................................................3-4
3.6 CABLE INSTALLATION ..............................................................................................................................3-5
3.7 RACK INSTALLATION................................................................................................................................3-7
3.8 400 SERIES UNIT INSERTION AND REMOVAL ......................................................................................3-7
3.9 COM ANTENNA INSTALLATION CHECK (GNC 420 AND GNS 430) ................................................3-7
4. SYSTEM INTERCONNECTS
4.1 PIN FUNCTION LIST ....................................................................................................................................4-1
4.2 POWER, LIGHTING, AND ANTENNAS....................................................................................................4-5
4.3 ALTIMETER ..................................................................................................................................................4-6
4.4 MAIN INDICATOR.......................................................................................................................................4-7
4.5 ANNUNCIATORS/SWITCHES.....................................................................................................................4-9
4.6 SERIAL DATA ...............................................................................................................................................4-11
4.7 COM/VOR/ILS AUDIO (GNC 420 AND GNS 430 ONLY) ........................................................................4-14
4.8 VOR/ILS INDICATOR (GNS 430 ONLY) ....................................................................................................4-16
4.9 RMI/OBI..........................................................................................................................................................4-18
4.10 DME TUNING (GNS 430 ONLY) ...............................................................................................................4-19
5. POST INSTALLATION CONFIGURATION & CHECKOUT PROCEDURE
5.1 CONFIGURATION MODE OPERATIONS................................................................................................5-1
5.2 INSTALLATION CONFIGURATION PAGES ...........................................................................................5-1
5.3 ADDITIONAL GROUND TESTS .................................................................................................................5-17
Appendix A. CERTIFICATION DOCUMENTS
A.1 CONTINUED AIRWORTHINESS ...............................................................................................................A-1
A.2 ENVIRONMENTAL QUALIFICATION FORM—GNS 430 ....................................................................A-3
A.3 ENVIRONMENTAL QUALIFICATION FORM—GNC 420....................................................................A-4
A.4 ENVIRONMENTAL QUALIFICATION FORM—GPS 400 .....................................................................A-5
A.5 ENVIRONMENTAL QUALIFICATION FORM—GA 56 ........................................................................A-6
Appendix B. STC PERMISSION..................................................................................................................................B-1
Appendix C. 400 SERIES RS-232 AVIATION DATA FORMAT .............................................................................C-1
Appendix D. 400 SERIES RS-232 FUEL/AIR DATA INPUT FORMAT .................................................................D-1
Appendix E. 400 SERIES LRU INTERFACE OVERVIEW.........................................................................................E-1
Appendix F. DRAWINGS AND INTERCONNECTS ...............................................................................................F-1
Note: Throughout this document references made to GNS 430 and GNC 420 shall equally apply to the
GNS 430A and GNC 420A except where specifically noted.
400 SERIES INSTALLATION MANUAL Page iii
P/N 190-00140-02 Rev M
LIST OF FIGURES
FIGURE 2-1. GPS ANTENNA AND UNIT INSTALLATION CONSIDERATIONS ............................................2-2
FIGURE 3-1. COAXIAL CABLE INSTALLATION.................................................................................................3-5
FIGURE 5-1. MAIN ARINC 429 CONFIG PAGE....................................................................................................5-1
FIGURE 5-2. MAIN RS232 CONFIG PAGE .............................................................................................................5-3
FIGURE 5-3. MAIN INPUTS 1 PAGE ......................................................................................................................5-4
FIGURE 5-4. MAIN INPUTS 2 PAGE ......................................................................................................................5-4
FIGURE 5-5. INSTRUMENT PANEL SELF TEST PAGE .......................................................................................5-5
FIGURE 5-6. MAIN LIGHTING PAGE....................................................................................................................5-5
FIGURE 5-7. MAIN LIGHTING PAGE (DISPLAY LIGHTING FROM LIGHTING BUS) .................................5-6
FIGURE 5-8. DISPLAY PAGE (AUX GROUP)........................................................................................................5-6
FIGURE 5-9. DATE/TIME SETUP PAGE ................................................................................................................5-6
FIGURE 5-10. MAIN DISCRETE INPUTS PAGE ...................................................................................................5-6
FIGURE 5-11. MAIN DISCRETE OUTPUTS PAGE...............................................................................................5-7
FIGURE 5-12. MAIN CDI/OBS CONFIG PAGE ......................................................................................................5-7
FIGURE 5-13. COM SETUP PAGE (GNC 420 AND GNS 430 ONLY) ..................................................................5-9
FIGURE 5-14. VOR DISCRETE INPUTS PAGE (GNS 430 ONLY) ........................................................................5-10
FIGURE 5-15. VOR/LOC/GS CDI PAGE (GNS 430 ONLY) ....................................................................................5-10
FIGURE 5-16. VOR/LOC/GS ARINC 429 CONFIG PAGE (GNS 430 ONLY) .......................................................5-11
FIGURE 5-17. STORMSCOPE CONFIG PAGE.......................................................................................................5-12
FIGURE 5-18. STORMSCOPE TEST PAGE .............................................................................................................5-12
FIGURE 5-19. STORMSCOPE DOWNLOAD DATA PAGE ..................................................................................5-12
FIGURE 5-20. TRAFFIC PAGE (SKYWATCH).......................................................................................................5-13
FIGURE 5-21. TRAFFIC PAGE (TCAD) ..................................................................................................................5-13
FIGURE 5-22. RYAN TCAD CONFIG PAGE..........................................................................................................5-13
FIGURE 5-23. GAD 42 CONFIG PAGE ....................................................................................................................5-13
FIGURE 5-24. DATA LINK PAGE............................................................................................................................5-14
FIGURE F-1. GA 56 ANTENNA INSTALLATION DRAWING ............................................................................F-3
FIGURE F-2. GNS 430 MOUNTING RACK DIMENSIONS..................................................................................F-5
FIGURE F-3. GNC 420 MOUNTING RACK DIMENSIONS .................................................................................F-7
FIGURE F-4. GPS 400 MOUNTING RACK DIMENSIONS ...................................................................................F-9
FIGURE F-5. GNS 430 MOUNTING RACK INSTALLATION .............................................................................F-11
FIGURE F-6. GNC 420 MOUNTING RACK INSTALLATION.............................................................................F-13
FIGURE F-7. GPS 400 MOUNTING RACK INSTALLATION ..............................................................................F-15
FIGURE F-8. 400 SERIES RECOMMENDED PANEL CUTOUT DIMENSIONS ................................................F-17
FIGURE F-9. 400 SERIES SYSTEM INTERFACE DIAGRAM...............................................................................F-19
FIGURE F-10. GNS 430 TYPICAL INSTALLATION..............................................................................................F-21
FIGURE F-11. GNC 420 TYPICAL INSTALLATION .............................................................................................F-23
FIGURE F-12. GPS 400 TYPICAL INSTALLATION ..............................................................................................F-25
FIGURE F-13. POWER, LIGHTING, AND ANTENNAS INTERCONNECT .......................................................F-27
FIGURE F-14. ALTIMETER INTERCONNECT ......................................................................................................F-29
FIGURE F-15. MAIN INDICATOR INTERCONNECT ..........................................................................................F-31
FIGURE F-16. KI 209A MAIN INDICATOR INTERCONNECT ...........................................................................F-33
FIGURE F-17. KI 208A MAIN INDICATOR INTERCONNECT ...........................................................................F-35
FIGURE F-18. ANNUNCIATORS/SWITCHES INTERCONNECT ........................................................................F-37
FIGURE F-19. RS-232 SERIAL DATA INTERCONNECT ......................................................................................F-39
FIGURE F-20. ARINC 429 EFIS INTERCONNECT ................................................................................................F-41
FIGURE F-21. ARINC 429 SANDEL EHSI INTERCONN. (1 400 SERIES UNIT, 1 SANDEL SN3308)..............F-43
FIGURE F-22. ARINC 429 SANDEL EHSI INTERCONNECT (2 GNS 430, 1 SANDEL SN3308).......................F-45
FIGURE F-23. ARINC 429 SANDEL EHSI INTERCONNECT (2 GNS 430, 2 SANDEL SN3308).......................F-47
FIGURE F-24. ARINC 429/RS-232 AIR DATA/IRU/AHRS INTERCONNECT ....................................................F-49
Page iv 400 SERIES INSTALLATION MANUAL
Rev M P/N 190-00140-02
FIGURE F-25. ARINC 429 FLIGHT CONTROL INTERCONNECT .....................................................................F-51
FIGURE F-26. TRAFFIC ADVISORY SYSTEM INTERCONNECT ......................................................................F-53
FIGURE F-27. WEATHER AND TERRAIN INTERCONNECT .............................................................................F-55
FIGURE F-28. AUDIO PANEL INTERCONNECT ..................................................................................................F-57
FIGURE F-29. VOR/ILS INDICATOR INTERCONNECT ......................................................................................F-59
FIGURE F-30. RMI/OBI INTERCONNECT .............................................................................................................F-61
FIGURE F-31. KING SERIAL PANEL DME TUNING INTERCONNECT ...........................................................F-63
LIST OF FIGURES - CONTINUED
FIGURE F-32. KING SERIAL REMOTE DME TUNING INTERCONNECT .......................................................F-65
FIGURE F-33. PARALLEL 2 OF 5 DME TUNING INTERCONNECT .................................................................F-67
FIGURE F-34. PARALLEL BCD/SLIP CODE DME TUNING INTERCONNECT ...............................................F-69
Note: Throughout this document references made to GNS 430 and GNC 420 shall equally apply to the
GNS 430A and GNC 420A except where specifically noted.
400 SERIES INSTALLATION MANUAL Page v
P/N 190-00140-02 Rev M
400 SERIES HARDWARE MOD LEVEL HISTORY
The following table identifies hardware modification (Mod) Levels for the GPS 400, GNC 420 and GNS
430. Mod Levels are listed with the associated service bulletin number, service bulletin date, and the
purpose of the modification. The table is current at the time of publication of this manual (see date on front
cover) and is subject to change without notice. Authorized Garmin Sales and Service Centers are
encouraged to access the most up-to-date bulletin and advisory information on the Garmin Dealer Resource
web site at www.garmin.com using their Garmin -provided user name and password.
MOD
LEVEL
SERVICE
BULLETIN
NUMBER
SERVICE
BULLETIN DATE
PURPOSE OF MODIFICATION
1 9905 9/17/99 CDI/HSI deviation error; GNS 430, P/N 011-
00280-00, GNC 420, P/N 011-00506-00, GPS
400, P/N 011-00504-00
1 0019 11/07/00 Replace fuse in COM circuit with a resistor; GNS
430, P/N 011-00280-10, GNC 420, P/N 011-
00506-10, GNS 530, P/N 011-00550-10
2 0101 2/16/01 Remote COM transfer
3 0203, Rv B 8/12/02 Improve receiver audio compressor performance
4 0207 4/2/02 Remove excess solder from COM board
5 0211 6/4/02 Reduce input transients from Audio Panel
Note: Throughout this document references made to GNS 430 and GNC 420 shall equally apply to the
GNS 430A and GNC 420A except where specifically noted.
Page vi 400 SERIES INSTALLATION MANUAL
Rev M P/N 190-00140-02
This page intentionally left blank
400 SERIES INSTALLATION MANUAL Page 1-1
P/N 190-00140-02 Rev M
1. GENERAL DESCRIPTION
1.1 INTRODUCTION
This manual describes the physical, mechanical, and electrical characteristics and the installation
requirements for the 400 Series (GPS 400, GNC 420, and GNS 430) Panel-mounted units. After installation of
the 400 Series system, FAA Form 337 must be completed by an appropriately certificated agency to return
the aircraft to service.
1.2 EQUIPMENT DESCRIPTION
The 400 Series units are mark width (6.25” wide) units, and 2.66” high. The display is a 128 by 240 pixel color
LCD. The units include two removable data cards, one with a Jeppesen database, and the second being
reserved for future expansion.
The GPS 400 is a GPS receiver certifiable for IFR en route, terminal, and non-precision approach operations.
The GNC 420/ (A) includes all the features of the GPS 400, and also includes an IFR certified airborne VHF
communications transceiver. The (A) model is a 28 Vdc unit with a 16 Watt COM transmitter.
The GNS 430/ (A) includes all the features of the GNC 420, and also includes IFR certified airborne
VOR/Localizer and Glideslope receivers. The (A) model is a 28 Vdc unit with a 16 Watt COM transmitter.
GPS signals are received by Garmin's low profile GA 56 antenna (P/N 010-10040-0X).
CAUTION
The GPS 400 Series product lens is coated with a special anti-reflective coating which 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.
CAUTION
The use of ground-based cellular telephones while aircraft are airborne is prohibited by
FCC rules. Due to potential interference with onboard systems, the use of ground-based
cell phones while the aircraft is on the ground is subject to FAA regulation 14 CFR §91.21.
FCC regulation 41 CFR §22.925 prohibits airborne operation of ground-based cellular
telephones installed in or carried aboard aircraft. Ground-based cellular telephones must
not be operated while aircraft are off the ground. When any aircraft leaves the ground, all
ground-based cellular telephones on board that aircraft must be turned off.
Ground-based cell phones that are on, even in a monitoring state, can disrupt GPS
performance.
Page 1-2 400 SERIES INSTALLATION MANUAL
Rev M P/N 190-00140-02
1.3 TECHNICAL SPECIFICATIONS
The conditions and tests required for TSO approval of the 400 Series are minimum performance standards. It
is the responsibility of those desiring to install this article either on or within a specific type or class of
aircraft to determine that the aircraft installation conditions are within the TSO standards. The article may be
installed only if further evaluation by the applicant documents an acceptable installation and is approved by
the administrator. For TSO Compliance, see Appendix A.
1.3.1 Physical Characteristics
Bezel Height 2.66 in. (67 mm)
Bezel Width 6.25 in. (159 mm)
Rack Height (Dimple-to-dimple) 2.69 in. (68 mm)
Rack Width 6.32 in. (160 mm)
Depth Behind Panel with
Connectors (Measured from
face of aircraft panel to rear of
connector backshells)
11.00 in. (279 mm)
GPS 400 Weight (Unit only) 3.8 lbs. (1.7 kg)
GPS 400 Weight (Installed with
rack and connectors)
4.9 lbs. (2.2 kg)
GNC 420 Weight (Unit only) 4.5 lbs. (2.0 kg)
GNC 420 Weight (Installed with
rack and connectors)
5.8 lbs. (2.6 kg)
GNS 430 Weight (Unit only) 5.1 lbs. (2.3 kg)
GNS 430 Weight (Installed with
rack and connectors)
6.5 lbs. (2.9 kg)
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The Garmin GPS 400 series installation manual is a comprehensive guide covering the installation procedures for the 430 and 420 models. With a total of 198 pages, this manual provides detailed instructions and diagrams to assist professional mechanics and DIY enthusiasts in the proper installation of the GPS 400 series.
