Garmin 0060200 AIRCRAFT MOUNTED WEATHER RADAR TRANSMITTER User Manual Cover Rev1
Garmin International Inc AIRCRAFT MOUNTED WEATHER RADAR TRANSMITTER Cover Rev1
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Contents
- 1. PILOT MANUAL
- 2. INSTALLATION MANUAL
INSTALLATION MANUAL
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SPECIFICATION
CONTROL
DRAWING
REVISIONS
REV.
DATE
5/12/05
DESCRIPTION
ECO NO.
Preliminary Release
---------
8.5"
GWX 68
Installation Manual
3-Hole
Punch
11"
DER REVIEW REQUIRED
NOTES:
1. DESCRIPTION: Installation Documentation - GWX 68 Installation Manual
2. PAGE SIZE:
Letter: Width = 8.5 inches, Height = 11 inches
Tabloid: Width = 11.0 inches, Height = 17.0 inches
5 single-sided tabloid sheets.
3. PAGINATION: 30 double-sided letter sheets.
4. MATERIAL: 24 pound bond. Approved equivalents allowed.
5. COLOR: Black Ink on White Paper Stock.
6. BINDERY: Three-hole punch, shrink-wrap. Digital output preferred
7. FOLDS: Z-Fold tabloid sheets at end of document.
8. ELECTRONIC ARTWORK: Shall Conform to Garmin Archive, Filename: 190-00286-01.pdf
The following files have been archived under the aboce ARCHIVE FILENAME.
Filename
File Contents
190-00286-01.pdf
release.indd
Manual Elements
*.*
Portable Document Format, contains Installation Manual and Release Specification
Adobe InDesign Format, Release Specification
Word 97 for PC, Formatted Files and Figures
Various supporting illustrations, drawings, and artwork.
Garmin Ltd. or its subsidiaries
c/o Garmin International, Inc.
1200 E. 151st Street
Olathe, Kansas 66062 U.S.A.
CONFIDENTIAL
This drawing and the specifications contained herein are the property of Garmin
Ltd. or its subsidiaries and may not be reproduced or used in whole or in part as
the basis for manufacture or sale of products without written permission .
Date:
Drafter:
Checker:
Project Engineer:
Released By:
TITLE:
GWX 68 Installation Manual
SIZE PART NO:
Scale: N/A
REV.
190-00286-01
Page 1
of 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.
1200 E. 151st 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.
Unit 5, The Quadrangle
Abbey Park Industrial Estate
Romsey, SO51 9DL U.K.
44/0870.851241
RECORD OF REVISIONS
Revision
Revision
Date
5/12/05
Description
Initial Release
ECO #
--------
DOCUMENT PAGINATION
Section
Table of Contents
Section 1
Section 2
Section 3
Section 4
Appendix A
Appendix B
Page A
Preliminary Revision 1
Page Range
i - vi
1-1 – 1-6
2-1 – 2-2
3-1 – 3-10
4-1 – 4-4
A-1 – A-2
B-1 – B-8
GWX 68 Installation Manual
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
190-00286-01
Page i
Preliminary Revision 1
SAFE DISTANCE DETERMINATION
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/cm2. See AC 20-68B
for more information on safe distance determination.
Antenna Size
10”
12”
Safe Distance
9.16 ft
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
Center Line of
Aircraft
Radome
Antenna
Page ii
Preliminary Revision 1
GWX 68 Installation Manual
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
190-00286-01
Page iii
Preliminary Revision 1
TABLE OF CONTENTS
PARAGRAPH
PAGE
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
GENERAL DESCRIPTION..............................................................................................................1-1
Introduction........................................................................................................................................1-1
Equipment Description ......................................................................................................................1-1
Interface Summary.............................................................................................................................1-1
Technical Specifications ....................................................................................................................1-1
License Requirements........................................................................................................................1-3
Certification .......................................................................................................................................1-4
Reference Documents ........................................................................................................................1-4
Limited Warranty...............................................................................................................................1-5
2.1
2.2
2.3
2.4
2.5
2.6
INSTALLATION OVERVIEW ........................................................................................................2-1
Introduction........................................................................................................................................2-1
Installation Materials .........................................................................................................................2-1
Installation Considerations ................................................................................................................2-1
Cabling and Wiring............................................................................................................................2-2
Cooling Requirements .......................................................................................................................2-2
Mounting Requirements ....................................................................................................................2-2
3.1
3.2
3.3
3.4
3.5
3.6
INSTALLATION PROCEDURE......................................................................................................3-1
Unpacking Unit..................................................................................................................................3-1
Wiring Harness Installation ...............................................................................................................3-1
Backshell Assemblies and D-Subminiature Connectors....................................................................3-2
Unit Installation ...............................................................................................................................3-10
Post Installation Configuration & Checkout....................................................................................3-10
Continued Airworthiness .................................................................................................................3-10
4.1
4.2
4.3
4.4
4.5
SYSTEM INTERCONNECTS..........................................................................................................4-1
Pin Function List................................................................................................................................4-1
Power .................................................................................................................................................4-2
Serial Data .........................................................................................................................................4-3
Configuration.....................................................................................................................................4-3
Auto Pilot...........................................................................................................................................4-3
APPENDIX A: OUTLINE & INSTALLATION DRAWINGS .............................................................. A-1
APPENDIX B: INTERCONNECT EXAMPLE....................................................................................... B-1
Page iv
Preliminary Revision 1
GWX 68 Installation Manual
190-00286-01
LIST OF ILLUSTRATIONS
FIGURE
3-1
3-2
3-3
3-4
3-5
A-1
B-1
B-2
B-3
B-4
PAGE
Shield Block Install onto Backshell Connector Assembly ................................................................3-3
Shielded Cable Preparation................................................................................................................3-4
Daisy Chain Method for Shield Termination.....................................................................................3-7
Parallel Shield Termination ...............................................................................................................3-8
Configuration Module Installation.....................................................................................................3-9
GWX 68 Outline Drawing................................................................................................................ A-1
GWX 68 Typical G1000 Interconnect Wiring Diagram................................................................... B-1
GWX 68 Typical MX20 Interconnect Wiring Diagram ................................................................... B-3
GWX 68 Analog Stabilization Interconnect Wiring Diagram.......................................................... B-5
GWX 68 AHRS Stabilization Interconnect Wiring Digram............................................................. B-7
LIST OF TABLES
TABLE
3-1
3-2
3-3
3-4
3-5
3-6
3-7
PAGE
Pin Contact Part Numbers..................................................................................................................3-1
Recommended Crimp Tools ..............................................................................................................3-1
Backshell Assembly...........................................................................................................................3-2
Shield Block Components .................................................................................................................3-3
Shielded Cable Preparation................................................................................................................3-4
Configuration Module Kit – 011-00979-00.......................................................................................3-8
Configuration Module Wire Color Reference Chart..........................................................................3-9
GWX 68 Installation Manual
190-00286-01
Page v
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
Page vi
Preliminary Revision 1
SERVICE
BULLETIN
DATE
PURPOSE OF MODIFICATION
GWX 68 Installation Manual
190-00286-01
1
1.1
GENERAL DESCRIPTION
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
190-00286-01
Page 1-1
Preliminary Revision 1
1.4.2 Physical Characteristics
Characteristics
Specifications
Unit Size
See Figure A-1. GWX 68 Outline Drawing
10" – 9.0 lbs (4.08 kg)
12" – 9.1 lbs (4.13 kg)
Unit weight
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.
95% non-condensing
-1,500 ft to 50,000 ft
Humidity
Altitude Range
1.4.4 Performance Specifications
Characteristics
Display Colors
Selectable Ranges
Weather Avoidance Range
Performance Index
Rx Sensitivity
Manual Gain
Antenna Beamwidth
Magnetron Power
Pulse Width
Scan Angle
Scan Centerline
Scan Rate
Manual Tilt
Stabilization
Altitude
STC
Extended STC
Interface
Page 1-2
Preliminary Revision 1
Specifications
4 Colors
2.5, 5, 10, 20, 40, 80, 160, 320nm
305nm w/ 12” Ant.
270nm w/ 10” Ant.
213dB w/ 12” Ant.
210dB w/ 10” Ant.
-110 dBm MDS
+12 to –64dB
7.8° w/ 12” Ant.
9.0° w/ 10” Ant.
6.5kW nominal
5kW minimum
1 or 4 µS
Pilot adjustable – 20, 40, 60 or 90°
Pilot adjustable
12 looks/minute
±15°
±30° combined pitch and roll
50k Ft unpressurized
Effective to 80nm
80nm to 320nm
Garmin HSDB/ARINC 429/ARINC 453
GWX 68 Installation Manual
190-00286-01
1.4.5 Power Requirements
Characteristics
Input Voltage Range
Input Current
1.5
Specifications
14/28 Vdc See the Environmental Qualification Form for
details on surge ratings and minimum/maximum operating
voltages.
2A @ 28V, maximum
License Requirements
The Telecommunications Act of 1996, effective February 8, 1996, provides the FCC discretion to
eliminate radio station license requirements for aircraft and ships. The GWX 68 installation must comply
with current transmitter licensing requirements. To find out the specific details on whether a particular
installation is exempt from licensing, please visit the FCC web site http://wireless.fcc.gov/aviation.
If an aircraft license is required, make application for a license on FCC form 404, Application for Aircraft
Radio Station License. The FCC also has a fax-on-demand service to provide forms by fax. The
GWX 68 owner accepts all responsibility for obtaining the proper licensing before using the transponder.
CAUTION
The transmitter in this equipment is guaranteed to meet Federal Communications
Commission acceptance over the specified operating temperature range. Modifications to
Garmin equipment not expressly approved by Garmin could invalidate the license and
make it unlawful to operate the equipment.
GWX 68 Installation Manual
190-00286-01
Page 1-3
Preliminary Revision 1
1.6
Certification
The conditions and tests required for TSO approval of this article are minimum performance standards. It
is the responsibility of those installing 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. TSO articles must have
separate approval for installation in an aircraft. The article may be installed only if performed under 14
CFR part 43 or the applicable airworthiness requirements. At the time of publication, installations of this
TSO approved article are only approved when installed in an aircraft as part of a Garmin G1000 system.
1.6.1 TSO/ETSO Compliance
TSO-C63c Class 7
1.7
Reference Documents
The following publications are sources of additional information for installing the GWX 68. Before
installing the GWX 68, the technician should read all referenced materials along with this manual.
Part Number
190-00303-00
560-1025-09
Page 1-4
Preliminary Revision 1
Document
G1000 System Installation Manual
MX20 Multi-Function Display Installaltion Manual
GWX 68 Installation Manual
190-00286-01
1.8
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 or
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 alteration 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 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, call Garmin Customer Service at one of the numbers shown below.
Products sold through online auctions are not eligible for rebates or other special offers from Garmin.
Online auction confirmations are not accepted for warranty verification. To obtain warranty service, an
original or copy of the sales receipt from the original retailer is required. Garmin will not replace missing
components from any package purchased through an online auction.
Garmin International, Inc.
1200 East 151st Street
Olathe, Kansas 66062, U.S.A.
Phone: 913/397.8200
FAX: 913/397.8282
GWX 68 Installation Manual
190-00286-01
Garmin (Europe) Ltd.
Unit 5, The Quadrangle, Abbey Park Industrial Estate
Romsey, SO51 9DL, U.K.
Phone: 44/0870.851241
FAX: 44/0870.851251
Page 1-5
Preliminary Revision 1
This page intentionally left blank
Page 1-6
Preliminary Revision 1
GWX 68 Installation Manual
190-00286-01
2
INSTALLATION OVERVIEW
2.1
Introduction
This section provides hardware equipment information for installing the GWX 68, related hardware, and
antennas. Installation of the GWX 68 should follow the aircraft TC or STC requirements. Cabling is
fabricated by the installing agency to fit each particular aircraft. The final installation must meet the
requirements of FAA AC 43.13-1B and AC 43.13-2A.
2.2
Installation Materials
The GWX 68 is available under the following part number:
Item
Catalog P/N
GWX 68 Unit Only, (011-00883-00)
010-00299-00
GWX 68 Standard, (011-00883-00) *
010-00300-00
*Includes installation kit (011-01114-00).
2.3
Installation Considerations
Fabrication of a wiring harness is required. Sound mechanical and electrical methods and practices are
required for installation of the GWX 68.
2.3.1
Antenna Considerations
Antenna installations on pressurized cabin aircraft require FAA approved installation design and
engineering substantiation data whenever such antenna installations incorporate alteration (penetration) of
the cabin pressure vessel by connector holes and/or mounting arrangements. For needed engineering
support pertaining to the design and approval of such pressurized aircraft antenna installations, it is
recommended that the installer proceed according to any of the following listed alternatives:
1. Obtain approved antenna installation design data from the aircraft manufacturer.
2. Obtain an FAA approved STC, pertaining to, and valid for the antenna installation.
3. Contact the FAA Aircraft Certification Office in the appropriate Region and request identification
of FAA Designated Engineering Representatives (DERs) who are authorized to prepare and
approve the required antenna installation engineering data.
4. Obtain FAA Advisory Circular AC-183C and identify a DER from the roster of individuals in it.
5. Contact an aviation industry organization such as the Aircraft Electronics Association for
assistance.
GWX 68 Installation Manual
190-00286-01
Page 2-1
Preliminary Revision 1
2.4
Cabling & Wiring
Use AWG #24 or larger wire for all connections unless otherwise specified by the aircraft manufacturer
or Garmin. The standard pin contacts supplied in the connector kit are compatible with up to AWG #22
wire. In cases where some installations have more than one unit sharing a common circuit breaker, sizing
and wire gauge is based on aircraft circuit breaker layout, length of wiring, current draw of units, and
internal unit protection characteristics. Do not attempt to combine more than one unit on the same circuit
breaker unless it is specified on aircraft manufacturer approved drawings.
In these cases, a larger gauge wire such as AWG #18 or #16 may be needed for power connections. The
provided connector kit supplies extended barrel contacts for AWG #16 and #18 wire, if required. Special
thin-wall heat shrink tubing is also provided to insulate the extended barrels inside the backshell. If using
AWG #16 or #18 barrel contacts, ensure that no two contacts are mounted directly adjacent to each other.
This minimizes the risk of contacts touching and shorting to adjacent pins and to ground.
Ensure that routing of the wiring does not come in contact with sources of heat, RF or EMI interference.
Check that there is ample space for the cabling and mating connectors. Avoid sharp bends in cabling and
routing near aircraft control cables.
2.5
Cooling Requirements
The GWX 68 does not have provisions for attaching cooling air and does not generate an excessive
amount of heat during typical operations, however thermal characteristics of the installation should
always be assessed. An undesirable thermal condition could be created due to the unit’s own internal
power dissipation combined with restricted ventilation, or due to heat generated by adjacent equipment.
Limiting thermal build up, by means of fan or natural convection is always good practice and
recommended to increase the product life.
2.6
Mounting Requirements
The GWX 68 mounting surface must be capable of providing structural support and electrical bond to the
aircraft to minimize radiated EMI and provide protection from High-Intensity Radiation Fields (HIRF).
Page 2-2
Preliminary Revision 1
GWX 68 Installation Manual
190-00286-01
3
INSTALLATION PROCEDURE
3.1
Unpacking Unit
Carefully unpack the equipment and make a visual inspection of the unit for evidence of damage incurred
during shipment. If the unit is damaged, notify the carrier and file a claim. To justify a claim, save the
original shipping container and all packing materials. Do not return the unit to Garmin until the carrier
has authorized the claim.
Retain the original shipping containers for storage. If the original containers are not available, a separate
cardboard container should be prepared that is large enough to accommodate sufficient packing material
to prevent movement of the item within the container.
3.2
Wiring Harness Installation
Allow adequate space for installation of cables, connectors, and strain relief as necessary. The installer
shall supply and fabricate all of the cables. All wiring must be in accordance with FAA AC 43.13-1B.
All electrical connections are made through a 44-pin D subminiature connector. Section 4 defines the
electrical characteristics of all input and output signals. Required connectors and associated hardware are
supplied with the connector kit.
See Appendix C for examples of interconnect wiring diagrams. Construct the actual harnesses in
accordance with aircraft manufacturer authorized interconnect standards.
Table 3-1. Pin Contact Part Numbers
Manufacturer
Garmin P/N
Military P/N
AMP
Positronic
ITT Cannon
16 AWG
(Power Only)
336-00044-01
N/A
N/A
N/A
N/A
44 pin D-Subminiature connector (P400)
18 AWG
20 AWG
(Power Only)
336-00044-00
336-00044-02
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
22-28 AWG
336-00021-00
M39029/58-360
204370-2
MC8522D
030-2042-000
Table 3-2. Recommended Crimp Tools
Manufacturer
Hand
Crimping Tool
Military P/N
Positronic
ITT Cannon
AMP
Daniels
Astro
M22520/2-01
9507
995-0001-584
601966-1
AFM8
615717
GWX 68 Installation Manual
190-00286-01
16, 18 & 20 AWG
Positioner
Insertion/
Extraction
Tool
(note 2)
N/A
M81969/1-04
9502-11
M81969/1-04
N/A
N/A
N/A
91067-1
K774
M81969/1-04
N/A
M81969/1-04
22-28 AWG
Positioner
Insertion/
Extraction
Tool
M22520/2-09
9502-3
995-0001-739
601966-6
K42
615725
M81969/1-04
M81969/1-04
N/A
91067-1
M81969/1-04
M81969/1-04
Page 3-1
Preliminary Revision 1
NOTES
1. Non-Garmin part numbers shown are not maintained by Garmin and consequently are subject
to change without notice.
2. Extracting the #16, #18 and #20 contact requires that the expanded wire barrel be cut off from
the contact. It may also be necessary to push the pin out from the face of the connector when
using an extractor due to the absence of the wire. A new contact must be used when
reassembling the connector.
3.3
Backshell Assembly and D-Subminiature Connectors
The GWX 68 connector kit (011-01114-00) includes one Garmin backshell assembly. Garmin’s
backshell connectors give the installer the ability to quickly and easily terminate shield grounds at the
backshell housing using the Shield Block ground kit. The term ‘D-Sub’ (D-Subminiature) connectors
have a letter “D” physical shape. D-Sub refers only to the polarized shell that holds the contacts (pins or
sockets) in place. Table 3-3 lists Garmin part numbers for the GWX 68 D-Sub Connectors and the
Backshell Assembly.
Table 3-3. Backshell Assembly
Figure Ref
10
11
Description
Cast Housing (From Garmin Backshell kit.)
Shield block
Screw, 4-40 x.250, FLHP100°, SS/P, Nylon.
Multiple Conductor Shielded Cable
(See Interconnect Diagrams, Appendix C)
Shield Termination
Braid, Flat (19 – 20 AWG equivalent, tinned
plated copper strands 36 AWG, Circular Mil
Area 1000 – 1300)
Shrink Tubing
Pins
Ring terminal, #8, insulated, 18-22 AWG,
14-16 AWG, 10-12 AWG
Screw, PHP, 8-32x.312", Stainless or Cad
Plated Steel
Split Washer, #8, (.045" compressed
thickness) Stainless or Cad-plated steel
12
Flat Washer, #8, .032" thick, .174"ID, .375"
OD, Stainless or Cad Plated Steel
13
14
15
Silicon Fusion Tape
Strain Relief
Screw,4-40x.375,PHP,SS/P,w/Nylon
Lid
Screw,4-40x.187,FLHP100,SS/P,w/Nylon
16
17
Page 3-2
Preliminary Revision 1
Garmin P/N
125-00085-00
117-00147-xx
211-63234-08
As Required
As Required
As Required
As Required
336-00021-00
MS25036-149,
MS25036-153,
MS25036-156
MS51957-42,
MS35206-242
MS35338-137,
MS35338-42
NAS1149CN832R,
NAS1149FN832P
249-00114-00
115-00499-xx
211-60234-10
115-00500-xx
211-63234-06
GWX 68 Installation Manual
190-00286-01
3.3.1 Shield Block Assembly Procedure
The parts for the connector and backshell assembly, GWX68 installations, are listed in Table 3-3 and
shown in Figure 3-1.
Figure 3-1. Shield Block Install onto Backshell Connector Assembly
Table 3-4. Shield Block Components
Backshell Assembly
Garmin P/N
Shield Block
Garmin P/N
011-00950-12
(25/44 Pin High Density)
011-01169-01
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Preliminary Revision 1
1. Attach the Shield Block(s) (2) to the backshell (1) by inserting the flathead screws (3) through the
holes on the Shield Block and threading into the tapped holes on the backshell (1). (See Figure 3-1).
The appropriate number of Shield Block kits is included in the GWX 68 connector kit.
Table 3-5. Shielded Cable Preparation
Float
Min
Float
Max
Ideal
Float
Window
Min
Window
Max
Ideal
Window
1.5”
2.5”
2.0”
3.0”
5.5”
4.5”
Figure 3-2. Shielded Cable Preparation
2. At one end of a shielded cable (4) measure back a distance between “Window Min” to “Window
Max” (Table 3-5) and cut a window (max size 0.35”) in the jacket to expose the shield. (See Figure
3-2). Use caution when cutting the jacket to avoid damaging the individual braids of the shield.
When dealing with a densely populated connector with many cables it may prove beneficial to stagger
the windows throughout the “Window Min” to “Window Max” range. If staggering is not needed the
“Ideal Window” length is recommended.
Tools needed to Accomplish the Window Cut:
•
•
•
Coaxial Cable Stripper
Thermal Stripper
Sharp Razor Blade
3. Connect a Flat Braid (6) to the shield exposed through the window of the prepared cable assembly
(4). The Flat Braid goes out the front of the termination towards the connector. Do not allow wires
to exit the rear of the termination and loop back towards the connector. (See Figure 3-2). Make this
connection using an approved shield termination technique. Refer to FAA Advisory Circular AC
43.13 as a reference for termination techniques.
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GWX 68 Installation Manual
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Preferred Method, Solder Sleeves:
Slide a solder sleeve (5) onto the prepared cable assembly (4) and connect the Flat Braid (6) to the shield
using a heat gun approved for use with solder sleeves. It may be easier to use a solder sleeve with a preinstalled Flat Braid versus having to cut a length of Flat Braid to be used. The chosen size of solder
sleeve must accommodate both the number of conductors present in the cable and the Flat Braid (6) to be
attached.
NOTE
Solder Sleeves with pre-installed Flat Braid: A preferred solder sleeve
is the Raychem S03 Series with the thermochromic temperature
indicator. These solder sleeves come with a pre-installed braid and
effectively take the place of items 5 and 6. For detailed instructions on
product use, refer to Raychem installation procedure RCPS 100-70.
Raychem Recommended Heating Tools:
•
•
•
•
•
HL1802E
AA-400 Super Heater
CV-1981
MiniRay
IR-1759
Individual Solder Sleeves and Flat Braid
Solder Sleeves:
Reference the following MIL-Specs for general solder sleeves:
(M83519/1-1, M83519/1-2, M83519/1-3, M83519/1-4, M83519/1-5).
Flat Braid:
If the preferred Raychem sleeves are not being used, the individual flat braid selected should conform to
ASTMB33 for tinned copper and be made up of 36 AWG strands to form an approximately 19-20 AWG
equivalent flat braid. A circular mil area range of 1000 to 1300 is required. The number of individual
strands in each braid bundle is not specified.
NOTE
Flat Braid as opposed to insulated wire is specified in order to insure
continuing airworthiness by allowing for visual inspection of the
conductor.
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Preliminary Revision 1
Secondary Method, Heat Shrink instead of Solder Sleeves:
Solder a Flat Braid (6) to the shield exposed through the window of the prepared cable assembly (4).
Ensure a solid electrical connection through the use of acceptable soldering practices. Use care to avoid
applying excessive heat that burns through the insulation of the center conductors and shorts the shield to
the signal wire. Slide a minimum 0.75” of Teflon heat shrinkable tubing (5) onto the prepared wire
assembly and shrink using a heat gun. The chosen size of heat shrinkage tubing must accommodate both
the number of conductors present in the cable and the Flat Braid (6) to be attached.
4. At the same end of the shielded cable (4) and ahead of the previous shield termination, strip back
“Float Min” to “Float Max” (Table 3-5) length of jacket and shield to expose the insulated center
conductors. (See Figure 3-2). It may be best to build the “Ideal Float” length optimally.
Preferred Method:
The jacket and shield should be cut off at the same point so no shield is exposed. Slide 0.75” minimum of
Teflon heat shrinkable tubing (7) onto the cable and use a heat gun to shrink the tubing. The chosen size
of heat shrinkage tubing must accommodate the number of conductors present in the cable
Secondary Method:
Leave a max 0.35” of shield extending past the jacket. Fold this 0.35” of shield back over the jacket.
Slide a solder sleeve (7) over the end of the cable and use a heat gun approved for solder sleeves to secure
the connection. The chosen size of solder sleeve must accommodate the number of conductors present in
the cable.
5. Strip back 1/8” of insulation and crimp a pin (8) to each of the conductors in the shielded cable.
6. Insert newly crimped pins and wires into the appropriate connector housing location as specified by
the installation wiring diagrams.
7. Cut the Flat Braid (6) to a length with the addition of a ring terminal that will reach one of the tapped
holes of the Shield Block (2). (See Figure 3-1). An appropriate amount of excess length without
looping should be given to the Flat Braid (6) to allow it to move freely with the wire bundle. Note
that the maximum distance from the backshell allowed for the window splice should keep the Flat
Braid (6) to a worst case length of approximately 4”.
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GWX 68 Installation Manual
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8. Guidelines for terminating the newly cutoff Flat Braid(s) (item 6) with insulated ring terminals (9):
•
•
•
•
•
Each tapped hole on the Shield Block (2) may accommodate only two ring terminals (9).
It is preferred that only two Flat Braids (6) be terminated per ring terminal. Two Flat Braids per
ring terminal will necessitate the use of a Ring terminal, #8, insulated, 14-16 AWG
(MS25036-153).
If only a single Flat Braid is left or if only a single Flat Braid is need for this connector, a Ring
terminal, #8, insulated, 18-22 AWG (MS25036-149) can accommodate this single Flat Braid.
If more braids exist for this connector than two per ring terminal, it is permissible to terminate
three braids per ring terminal. This will necessitate the use of a Ring terminal, #8, insulated,
10-12 AWG (MS25036-156).
In rare situations where more braids need to be terminated for this connector than three per ring
terminal it is allowable to daisy chain a maximum of two shields together before coming to the
ring terminal. (See Figure 3-3).
•
Figure 3-3: Daisy Chain Method for Shield Termination
GWX 68 Installation Manual
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Page 3-7
Preliminary Revision 1
9. Repeat steps 2 through 8 as needed for the remaining shielded cables.
10. Terminate the ring terminals to the Shield Block (2) by placing items on the Pan Head Screw (10) in
the following order: Split Washer (11), Flat Washer (12), first Ring Terminal, second Ring Terminal
if needed, before finally inserting the screw into the tapped holes on the Shield Block. Do not violate
the guidelines presented in Step 8 regarding ring terminals.
11. It is recommended to wrap the cable bundle with Silicone Fusion Tape (13) (GPN: 249-00114-00 or a
similar version) at the point where the backshell strain relief and cast housing will contact the cable
bundle. Note: Choosing to use this tape is at the discretion of the installer.
12. Place the smooth side of the backshell strain relief (14) across the cable bundle and secure using the
three screws (15). Warning: Placing the grooved side of the strain relief across the cable bundle may
risk damage to wires.
13. Attach the cover (16) to the backshell (1) using two screws (17).
Figure 3-4: Parallel Shield Termination
3.3.2 Configuration Module Installaltion (MX20 only)
Table 3-6 lists part numbers for the Configuration Module Kit.
Table 3-6. Configuration Module Kit – 011-00979-00
Item
Description
Garmin P/N
Configuration Module
PCB Board Assembly w/EEPROM
012-00605-00
Cable
4-Conductor Harness
325-00122-00
Crimp Pins
#22 AWG (HD)
336-00021-00
Spacer
Spacer, Config Module
213-00043-00
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GWX 68 Installation Manual
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3.3.3
Configuration Module Assembly Procedure (MX20 only)
Table 3-7. Configuration Module Wire Color Reference Chart
Color
Function
J400 Pin
Black
Ground
Red
Vcc
17
Yellow
Data
16
White
Clock
31
1. Crimp pins (4) onto each wire of the four-conductor wire harness (3). Strip 1/8” of insulation
from each wire prior to crimping.
2. Insert newly crimped pins and wires (3, 4) into the appropriate connector housing (5) location
shown in the figure below.
3. Apply the spacer (2) by wrapping it around the PCB Board (1) making sure to insert the plastic
connector mounted on the board into the hole provided in the spacer.
4. Plug the four-conductor wire harness (3) into the connector on the PCB Board (1).
5. Insert into the backshell (6) recess, PCB Board (1) with pad (2) in position.
6. Attach cover (7) to backshell (6) using screws (8).
Figure 3-5. Configuration Module Installation
GWX 68 Installation Manual
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Preliminary Revision 1
3.4
Unit Installation
The GWX 68 is designed to be rigidly mounted in the nose section of the aircraft. If the nose section is
not accessible, pod mounting is possible. The bulk head or antenna mounting plate must be very close to
perpendicular to the aircraft center line. The selected location must have adequate clearance for the full
antenna sweep and tilt range. See Appendix A for outline and installation drawings. The nose section
does not need to be pressurized.
NOTE
It is crucial to the performance of the GWX 68 weather radar system that care be taken in
alignment of the GWX 68 unit with respect to the aircraft.
1.
2.
3.
4.
3.5
Refer to Figure A-1 mount the GWX 68 using the hardware provided.
Assemble the GWX 68 connector kit, see Section 3.3.
Check unit for clearance in all extreme positions.
Ensure wiring harness is routed in such a way that it can not be struck by or interfere with the unit
movement through the full sweep and tilt range.
Post Installation Configuration & Checkout
NOTE
The GWX 68 does not provide valid outputs until the aircraft post installation
configuration procedures are completed.
When installed as part of the G1000 integrated cockpit system, the GWX 68 must have FAA approved
configuration data. Configuration data is loaded to the GWX 68 from an aircraft-specific G1000
Software Loader Card. Settings are predetermined for a specific aircraft and are typically contained
within the file named ‘TBD’.
The GDU 1040 PFD serves as the graphics user interface to the installer configuring the system. For
basic configuration information, refer to the G1000 Line Maintenance and Configuration Manual, Garmin
part number 190-00303-04. For actual aircraft installation/checkout, use only aircraft manufacturer
approved checkout procedures.
For GWX 68 installations operating with a Garmin MX20, refer to MX20 Installation Manual,
560-1025-09.
3.6
Continued Airworthiness
For sample Instructions for Continued Airworthiness (ICA) for the GWX 68 installed as part of the
G1000 integrated cockpit system, see the G1000 ICA Sample, Garmin part number 190-00303-07.
Other than for regulatory periodic functional checks, maintenance on the GWX 68 is “on condition” only.
Refer to the G1000 Line Maintenance and Configuration Manual, Garmin part number 190-00303-04.
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GWX 68 Installation Manual
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4
SYSTEM INTERCONNECTS
4.1
Pin Function List
4.1.1 P400
View of J400 connector from back of unit
15
14
30
13
29
44
Pin
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
12
28
43
11
27
42
Pin Name
CONFIG MODULE GROUND
RESERVED
RESERVED
ARINC 453 OUT A
ARINC 453 OUT B
RESERVED
AIRCRAFT POWER 1
RESERVED
AIRCRAFT POWER 1
AIRCRAFT POWER 2
RESERVED
AIRCRAFT POWER 2
POWER GROUND
RESERVED
POWER GROUND
CONFIG MODULE DATA
CONFIG MODULE POWER
ROLL ATTITUDE HI
ROLL ATTITUDE LO
26 VAC GYRO REF LO
26 VAC GYRO REF HI
ARINC 429 IN 2 A
ARINC 429 IN 2 B
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
CONFIG MODULE CLOCK
PITCH ATTITUDE HI
PITCH ATTITUDE LO
ETHERNET IN A
ETHERNET IN B
GWX 68 Installation Manual
190-00286-01
10
26
41
25
40
24
39
38
23
37
22
36
21 20
35
19
34
18
33
17
32
16
31
I/O
---Out
Out
-In
-In
In
-In
---I/O
Out
In
In
In
In
In
In
-------Out
In
In
In
In
Page 4-1
Preliminary Revision 1
Connector P400, continued
Pin
36
37
38
39
40
41
42
43
44
4.2
Pin Name
ETHERNET OUT A
ETHERNET OUT B
ARINC 429 IN 1 A
ARINC 429 IN 1 B
RESERVED
RESERVED
RESERVED
RESERVED
RADAR REMOTE POWER OFF
I/O
Out
Out
In
In
----In
Power
4.2.1 Power Functions
This section covers the power input requirements.
4.2.1.1 Aircraft Power
Pin Name
AIRCRAFT POWER 1
AIRCRAFT POWER 1
AIRCRAFT POWER 2
AIRCRAFT POWER 2
POWER GROUND
POWER GROUND
Connector
P400
P400
P400
P400
P400
P400
Pin
10
12
13
15
I/O
In
In
In
In
---
Pins 7 and 9 of P400 are internally connected to form AIRCRAFT POWER 1. Pins 10 and 12 of P400
are internally connected to form AIRCRAFT POWER 2. AIRCRAFT POWER 1 and AIRCRAFT
POWER 2 are “diode ORed” to provide power redundancy.
4.2.1.2 Remote On/Off
Pin Name
RADAR REMOTE POWER OFF
Connector
P400
Pin
44
I/O
In
For G1000 installations RADAR REMOTE POWER OFF must be grounded to pin 15 of P400 (POWER
GROUND).
Page 4-2
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GWX 68 Installation Manual
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4.3
Serial Data
4.3.1 Serial Data Electrical Characteristics
4.3.1.1 ARINC 429/453
Pin Name
ARINC 453 OUT A
ARINC 453 OUT B
ARINC 429 IN 1 A
ARINC 429 IN 1 B
ARINC 429 IN 2 A
ARINC 429 IN 2 B
Connector
P400
P400
P400
P400
P400
P400
Pin
38
39
22
23
I/O
Out
Out
In
In
In
In
Connector
P400
P400
P400
P400
Pin
34
35
36
37
I/O
In
In
Out
Out
4.3.1.2 Ethernet HSDB
Pin Name
ETHERNET IN A
ETHERNET IN B
ETHERNET OUT A
ETHERNET OUT B
The Ethernet high speed data bus (HSDB) meets the hardware aspects of IEEE standard 802.3 for 10 base
T Ethernet communications.
4.4
Configuration
4.4.1 Configuration Module
Pin Name
CONFIG MODULE GROUND
CONFIG MODULE DATA
CONFIG MODULE POWER
CONFIG MODULE CLOCK
4.5
Connector
P400
P400
P400
P400
Pin
16
17
31
I/O
-I/O
Out
Out
Connector
P400
P400
P400
P400
Pin
18
19
32
33
I/O
In
In
In
In
Auto Pilot
4.5.1 Flight Instruments
Pin Name
ROLL ATTITUDE HI
ROLL ATTITUDE LO
PITCH ATTITUDE HI
PITCH ATTITUDE LO
Inputs pitch and roll attitude information from AFCS. Expected nominal input voltage is 50mV/degree.
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Preliminary Revision 1
4.5.2 26 Volt AC Reference
Pin Name
26 VAC GYRO REF LO
26 VAC GYRO REF HI
Connector
P400
P400
Pin
20
21
I/O
In
In
Expected nominal input voltage is 400 Hz, 26VRMS.
Page 4-4
Preliminary Revision 1
GWX 68 Installation Manual
190-00286-01
APPENDIX A OUTLINE & INSTALLATION DRAWINGS
45°
MAX. AZIMUTH
ANGLE
PRELIMINARY
RIGHT ANGLE
CONNECTOR
6.815±.064 173.09±1.63
4.600±.022 116.84±0.56
AZIMUTH AXIS
4X 211-64214-22
1/4-28 SOCKET HEAD CAP SCREWS
BULKHEAD MOUNTING
SURFACE
4.951±.029 125.75±0.74
TILT AXIS
R6.548 166.32
MAX SPHERICAL RADIUS
12" ANTENNA
10.00 254.0
6.750 171.45
.25 6.4
3.375 85.73
4X
.265 6.73
30°
MAX. TILT
ANGLE
UP
THRU
2.47 62.7
R5.530 140.46
MAX SPHERICAL RADIUS
10" ANTENNA
.30 7.6
3.312 84.12
6.624 168.25
NOTES:
1. DIMENSIONS: INCHES[mm]
2. 12" ANTENNA SHOWN
Figure A-1. GWX 68 Outline Drawing
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APPENDIX B INTERCONNECT DRAWINGS
Figure B-1. GWX 68 Typical G1000 Interconnect Wiring Diagram
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APPENDIX B INTERCONNECT DRAWINGS
Figure B-2. GWX 68 Typical MX20 Interconnect Wiring Diagram
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APPENDIX B INTERCONNECT DRAWINGS
Figure B-3. GWX 68 Analog Stabilization Interconnect Wiring Diagram
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Preliminary Revision 1
APPENDIX B INTERCONNECT DRAWINGS
Figure B-4. GWX 68 AHRS Stabilization Interconnect Wiring Diagram
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