Garmin 0060200 INSTALLATION MANUAL
SPECIFICATION
REVISIONS
REV. DATE DESCRIPTION ECO NO.
CONTROL
1 5/12/05 Preliminary Release ---------
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GWX 68
Installation Manual
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1. DESCRIPTION: Installation Documentation -
GWX 68 Installation Manual
2. PAGE SIZE: Letter: Width = 8.5 inches, Height = 11 inches
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CONFIDENTIAL
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the basis for manufacture or sale of products without written permission .
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GWX 68 Installation Manual
PART NO:
190-00286-01
N/A
Garmin Ltd. or its subsidiaries
c/o Garmin International, Inc.
1200 E. 151st Street
Olathe, Kansas 66062 U.S.A.
Page of
REV.
1
1 36
Preliminary
GWX 68
Installation Manual
Garmin P/N 190-00286-01 May, 2005 Preliminary Revision 1
© Copyright 2005
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.
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st
Street
Olathe, KS 66062 USA
Telephone: 913-397-8200
Aviation Dealer Technical Support Line (Toll Free): (888) 606-5482
www.garmin.com
Garmin (Europe) Ltd.
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0870.851241
44/
RECORD OF REVISIONS
Revision Revision
Date
1 5/12/05 Initial Release --------
Description ECO #
DOCUMENT PAGINATION
Section Page Range
Table of Contents i - vi
Section 1 1-1 – 1-6
Section 2 2-1 – 2-2
Section 3 3-1 – 3-10
Section 4 4-1 – 4-4
Appendix A A-1 – A-2
Appendix B B-1 – B-8
Page A GWX 68 Installation Manual
Preliminary Revision 1 190-00286-01
This manual reflects the operation of software version TBD. Some differences in operation may be
observed when comparing the information in this manual to earlier or later software versions.
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.
WARNING
This radar device produces microwave radiation.
DO NOT OPERATE THIS DEVICE UNTIL ALL SAFETY
PRECAUTIONS AND INSTRUCTIONS IN THE
OPERATING AND INSTALL MANUALS HAVE BEEN
READ.
IMPROPER USE OR EXPOSURE MAY RESULT IN
BODILY INJURY.
CAUTION
All personnel should remain the prescribed “safe distance”
from this radar.
Never expose any part of the body to an unterminated
waveguide.
GWX 68 Installation Manual Page i
190-00286-01 Preliminary Revision 1
SAFE DISTANCE DETERMINATION
A
A
The following information establishes a minimum safe distance from the antenna for personnel near an
operating airborne weather radar. The minimum safe distance is based upon the FCC’s exposure limit at
9.3 to 9.5 GHz for general population/uncontrolled environments which is 1 mW/cm
2
. See AC 20-68B
for more information on safe distance determination.
Antenna Size Safe Distance
10” 9.16 ft
12” 10.8 ft
MAXIMUM PERMISSIBLE EXPOSURE LEVEL (MPEL)
The zone in which the radiation level exceeds the US Government standard of 1 mW/cm2, is the semicircular area of at least 9.16 ft from the 10” antenna and 10.83 ft from the 12” antenna as indicated in the
illustration below. All personnel must remain outside of this zone. The distance to the MPEL boundary
is calculated upon the basis of each antenna available with the GWX 68 system, rated output power of the
transmitter, and in the non-rotating or boresight position of the antenna (see example calculations above).
With a scanning or rotating beam, the averaged power density at the MPEL boundary is significantly
reduced.
MPEL
Boundary
10.83 ft for 12” ant
9.16 ft for 10” ant
Radome
Center Line of
ircraft
ntenna
Page ii GWX 68 Installation Manual
Preliminary Revision 1 190-00286-01
GENERAL PRECAUTIONS
Airborne weather radar should be operated on the ground only by qualified personnel.
Installed airborne radar should not be operated while the aircraft is in a hanger or other enclosure unless
the radar transmitter is not operating, or the energy is directed toward an absorption shield which
dissipates the radio frequency energy. Otherwise, radiation within the enclosure can be reflected
throughout the area.
BODY DAMAGE
To prevent possible human body damage, the following precautions should be taken:
1. Personnel should never stand nearby and in front of a radar antenna which is transmitting. When the
antenna is not scanning, the danger increases.
2. The recommended safe distance which is established above should be followed. The distance from
any person to the radar should be greater than that distance.
3. Personnel should be advised to avoid the end of an open waveguide unless the radar is turned off.
4. Personnel should be advised to avoid looking into a waveguide, or into the open end of a coaxial
connector or line connector to a radar transmitter output, as severe eye damage may result.
5. Personnel should be advised that when high power radar transmitters are operated out of their
protective cases, X-rays may be emitted. Stray X-rays may emanate from the glass envelope type
pulser, oscillator, clipper, or rectifier tubes, as well as magnetrons.
COMBUSTIBLE MATERIALS
To prevent possible fuel ignition, an installed airborne weather radar should not be operated while an
aircraft is being refueled or defueled.
GWX 68 Installation Manual Page iii
190-00286-01 Preliminary Revision 1
TABLE OF CONTENTS
PARAGRAPH PAGE
1 GENERAL DESCRIPTION.............................................................................................................. 1-1
1.1 Introduction........................................................................................................................................1-1
1.2 Equipment Description ......................................................................................................................1-1
1.3 Interface Summary.............................................................................................................................1-1
1.4 Technical Specifications .................................................................................................................... 1-1
1.5 License Requirements........................................................................................................................ 1-3
1.6 Certification .......................................................................................................................................1-4
1.7 Reference Documents ........................................................................................................................1-4
1.8 Limited Warranty...............................................................................................................................1-5
2 INSTALLATION OVERVIEW ........................................................................................................ 2-1
2.1 Introduction........................................................................................................................................2-1
2.2 Installation Materials .........................................................................................................................2-1
2.3 Installation Considerations ................................................................................................................2-1
2.4 Cabling and Wiring............................................................................................................................2-2
2.5 Cooling Requirements .......................................................................................................................2-2
2.6 Mounting Requirements ....................................................................................................................2-2
3 INSTALLATION PROCEDURE......................................................................................................3-1
3.1 Unpacking Unit.................................................................................................................................. 3-1
3.2 Wiring Harness Installation ...............................................................................................................3-1
3.3 Backshell Assemblies and D-Subminiature Connectors....................................................................3-2
3.4 Unit Installation ...............................................................................................................................3-10
3.5 Post Installation Configuration & Checkout.................................................................................... 3-10
3.6 Continued Airworthiness .................................................................................................................3-10
4 SYSTEM INTERCONNECTS..........................................................................................................4-1
4.1 Pin Function List................................................................................................................................4-1
4.2 Power .................................................................................................................................................4-2
4.3 Serial Data .........................................................................................................................................4-3
4.4 Configuration.....................................................................................................................................4-3
4.5 Auto Pilot...........................................................................................................................................4-3
APPENDIX A: OUTLINE & INSTALLATION DRAWINGS.............................................................. A-1
APPENDIX B: INTERCONNECT EXAMPLE....................................................................................... B-1
Page iv GWX 68 Installation Manual
Preliminary Revision 1 190-00286-01
LIST OF ILLUSTRATIONS
FIGURE PAGE
3-1 Shield Block Install onto Backshell Connector Assembly ................................................................3-3
3-2 Shielded Cable Preparation................................................................................................................3-4
3-3 Daisy Chain Method for Shield Termination.....................................................................................3-7
3-4 Parallel Shield Termination ...............................................................................................................3-8
3-5 Configuration Module Installation.....................................................................................................3-9
A-1 GWX 68 Outline Drawing................................................................................................................ A-1
B-1 GWX 68 Typical G1000 Interconnect Wiring Diagram................................................................... B-1
B-2 GWX 68 Typical MX20 Interconnect Wiring Diagram ................................................................... B-3
B-3 GWX 68 Analog Stabilization Interconnect Wiring Diagram.......................................................... B-5
B-4 GWX 68 AHRS Stabilization Interconnect Wiring Digram............................................................. B-7
LIST OF TABLES
TABLE PAGE
3-1 Pin Contact Part Numbers..................................................................................................................3-1
3-2 Recommended Crimp Tools .............................................................................................................. 3-1
3-3 Backshell Assembly...........................................................................................................................3-2
3-4 Shield Block Components .................................................................................................................3-3
3-5 Shielded Cable Preparation................................................................................................................3-4
3-6 Configuration Module Kit – 011-00979-00.......................................................................................3-8
3-7 Configuration Module Wire Color Reference Chart..........................................................................3-9
GWX 68 Installation Manual Page v
190-00286-01 Preliminary Revision 1
GWX 68 HARDWARE MOD LEVEL HISTORY
The following table identifies hardware modification (Mod) Levels for the GWX 68. 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
Page vi GWX 68 Installation Manual
Preliminary Revision 1 190-00286-01
1 GENERAL DESCRIPTION
1.1 Introduction
This manual presents mechanical and electrical installation requirements for installing the GWX 68
Airborne Weather Radar.
NOTE
The ability of a weather radar system to accurately display weather returns is highly
dependent upon the quality of the radome and its Transmission Efficiency. The specified
performance of the GWX 68 Airborne Weather Radar can be achieved when installed
behind a DO-213 Class A Radome within the RF window defined as +-45 degrees from
dead ahead in azimuth and +-15 degrees from dead ahead in elevation. Refer to RTCA
document DO-213 Class A for minimum operational performance standards for nose
mounted radomes.
1.2 Equipment Description
The GWX 68 Airborne Weather Radar is a microprocessor-based Line Replaceable Unit (LRU) that
outputs weather radar data to an external MFD. The GWX 68 communicates with other LRUs via
ARINC 429/453 and/or Ethernet high speed data bus (HSDB).
CAUTION
The operation of ground-based cellular telephones or other ground-based cellular devices
aboard aircraft while airborne is prohibited by FCC rules. Due to the potential for
interference with onboard systems, the operation of ground-based cellular communication
devices while onboard an aircraft that is on the ground is subject to FAA regulations 14
CFR 91.21.
FCC regulation 47 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 aboard any aircraft while the aircraft is off the ground. When any aircraft
leaves the ground, all ground-based cellular telephones on board that aircraft must be
turned off.
Ground-based cellular telephones that are on, even in a monitoring state, can disrupt GPS
performance.
1.3 Interface Summary
The GWX 68 is designed as an open architecture system that uses typical ARINC 429, ARINC 453, and
Ethernet communications interfaces.
1.4 Technical Specifications
1.4.1 Environmental Qualification Form
It is the responsibility of the installing agency to obtain the latest revision of the GWX 68 Environmental
Qualification Form. This form is available directly from Garmin under the following part number:
GWX 68 Environmental Qualification Form, Garmin part number 005-00171-00
To obtain a copy of this form, see the dealer/OEM portion of the Garmin web site (www.garmin.com).
GWX 68 Installation Manual Page 1-1
190-00286-01 Preliminary Revision 1
1.4.2 Physical Characteristics
Characteristics Specifications
Unit Size See Figure A-1. GWX 68 Outline Drawing
Unit weight
10" – 9.0 lbs (4.08 kg)
12" – 9.1 lbs (4.13 kg)
1.4.3 General Specifications
The table below contains general environmental specifications. For detailed specifications, see the
Environmental Qualification Form (005-00171-00).
Characteristics Specifications
Operating Temperature Range -55°C to +70°C. For more details see Environmental
Qualification Form.
Humidity 95% non-condensing
Altitude Range -1,500 ft to 50,000 ft
1.4.4 Performance Specifications
Characteristics Specifications
Display Colors 4 Colors
Selectable Ranges 2.5, 5, 10, 20, 40, 80, 160, 320nm
Weather Avoidance Range
Performance Index
Rx Sensitivity -110 dBm MDS
Manual Gain +12 to –64dB
Antenna Beamwidth
Magnetron Power 6.5kW nominal
Pulse Width 1 or 4 µS
Scan Angle Pilot adjustable – 20, 40, 60 or 90°
Scan Centerline Pilot adjustable
Scan Rate 12 looks/minute
Manual Tilt ±15°
Stabilization ±30° combined pitch and roll
Altitude 50k Ft unpressurized
STC Effective to 80nm
Extended STC 80nm to 320nm
Interface Garmin HSDB/ARINC 429/ARINC 453
305nm w/ 12” Ant.
270nm w/ 10” Ant.
213dB w/ 12” Ant.
210dB w/ 10” Ant.
7.8° w/ 12” Ant.
9.0° w/ 10” Ant.
5kW minimum
Page 1-2 GWX 68 Installation Manual
Preliminary Revision 1 190-00286-01
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