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190-01122-00 |
TBD 2011 |
Rev. A |
©Copyright 2011
Garmin International, Inc., 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.
SkyWatch® and Stormscope® are registered trademarks of L-3 Communications. XM® is a registered trademark of Sirius XM Satellite Radio, Inc.
Windows® is a registered trademark of Microsoft Corporation in the United States and other countries.
At Garmin, we value your opinion. For comments about this guide, please e-mail: Techpubs.Salem@garmin.com.
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
Web Site Address: www.garmin.com
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Garmin (Europe) Ltd. |
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Liberty House |
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Bull Copse Road |
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Hounsdown Business Park |
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Southampton, SO40 9RB, UK |
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Telephone: 44 (0) 8708501243 |
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RECORD OF REVISIONS |
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Revision |
Revision Date |
Description |
A |
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Initial Release |
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GDL 88 TSO Installation Manual |
Page A |
190-01122-00 |
Rev. A |
DOCUMENT PAGINATION
Section |
Pagination |
Table of Contents |
i - iv |
Section 1 |
1-1 through 1-10 |
Section 2 |
2-1 through 2-2 |
Section 3 |
3-1 through 3-4 |
Section 4 |
4-1 through 4-6 |
Section 5 |
5-1 through 5-3 |
Section 6 |
6-1 through 6-5 |
Section 7 |
7-1 through 7-2 |
Appendix A |
A-1 through A-2 |
Appendix B |
B-1 through B-5 |
Appendix C |
C-1 through C-6 |
Appendix D |
D-1 through D-7 |
Page B |
GDL 88 TSO Installation Manual |
Rev. A |
190-01122-00 |
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
Perchlorate Material – special handling may apply, See www.dtsc.ca.gov./hazardouswaste/perchlorate.
WARNING
The GDL 88 with GPS/SBAS and the GDL 88D with GPS/SBAS contains a lithium battery that must be recycled or disposed of properly. Battery replacement and removal must be performed by professional services.
GDL 88 TSO Installation Manual |
Page i |
190-01122-00 |
Rev. A |
1 |
GENERAL DESCRIPTION .............................................................................................................. |
1-1 |
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1.1 |
Introduction................................................................................................................................ |
1-1 |
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1.2 |
Equipment Description .............................................................................................................. |
1-1 |
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1.3 |
Technical Specifications ............................................................................................................ |
1-2 |
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1.3.1 |
Physical Characteristics ..................................................................................................... |
1-2 |
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1.3.2 |
General Specifications ....................................................................................................... |
1-2 |
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1.3.3 |
GPS/SBAS Specifications.................................................................................................. |
1-3 |
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1.3.4 |
978 MHz UAT Transceiver Specifications........................................................................ |
1-3 |
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1.3.5 |
1030 MHz Transmitter Specifications ............................................................................... |
1-4 |
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1.3.6 |
1090 MHz Receiver Specifications.................................................................................... |
1-4 |
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1.3.7 |
UAT/1090 Requirements ................................................................................................... |
1-5 |
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1.3.8 |
GPS Antenna Requirements............................................................................................... |
1-5 |
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1.4 |
License Requirements ................................................................................................................ |
1-6 |
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1.5 |
Regulatory Compliance.............................................................................................................. |
1-7 |
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1.5.1 |
TSO Authorization and Advisory Circular References...................................................... |
1-7 |
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1.5.2 |
Non-TSO Functions ........................................................................................................... |
1-8 |
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1.5.3 |
TSO Deviations.................................................................................................................. |
1-9 |
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1.5.4 |
FCC Grant of Equipment Authorization ............................................................................ |
1-9 |
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1.6 |
Aviation Limited Warranty ...................................................................................................... |
1-10 |
2 |
LIMITATIONS.................................................................................................................................. |
2-1 |
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2.1 |
Installation.................................................................................................................................. |
2-1 |
3 |
INSTALLATION OVERVIEW ........................................................................................................ |
3-2 |
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3.1 |
Antenna Considerations ............................................................................................................. |
3-2 |
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3.1.1 |
GPS Antenna Location....................................................................................................... |
3-2 |
4 |
INSTALLATION PROCEDURES.................................................................................................... |
4-1 |
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4.1 |
Unit and Accessories.................................................................................................................. |
4-1 |
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4.2 |
Optional Accessories.................................................................................................................. |
4-2 |
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4.2.1 |
GPS Antenna Options ........................................................................................................ |
4-2 |
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4.2.2 |
UAT Antenna Options ....................................................................................................... |
4-3 |
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4.3 |
Miscellaneous Options............................................................................................................... |
4-3 |
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4.4 |
Installation Materials not Supplied ............................................................................................ |
4-3 |
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4.4.1 |
Installation Materials Required but not Supplied............................................................... |
4-3 |
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4.5 |
Special Tools Required .............................................................................................................. |
4-3 |
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4.6 |
Coaxial Cable Installation .......................................................................................................... |
4-4 |
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4.7 |
Equipment Mounting ................................................................................................................. |
4-6 |
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4.7.1 |
Unit Replacement............................................................................................................... |
4-6 |
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4.8 |
Antenna Installation and Connections ....................................................................................... |
4-6 |
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Page ii |
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GDL 88 TSO Installation Manual |
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Rev. A |
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190-01122-00 |
5 |
CONNECTOR PINOUT INFORMATION....................................................................................... |
5-1 |
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5.1 |
Pin Function List........................................................................................................................ |
5-1 |
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5.1.1 |
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P881 Connector.................................................................................................................. |
5-1 |
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5.2 |
Power and Antennas................................................................................................................... |
5-3 |
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5.2.1 |
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Power ................................................................................................................................. |
5-3 |
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5.2.2 |
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Antennas ............................................................................................................................ |
5-3 |
6 POST INSTALLATION CONFIGURATION AND CHECKOUT PROCEDURES....................... |
6-4 |
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7 |
PERIODIC MAINTENANCE ........................................................................................................... |
7-1 |
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7.1 |
Equipment Calibration ............................................................................................................... |
7-1 |
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7.2 |
Cleaning ..................................................................................................................................... |
7-1 |
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7.3 |
Battery Replacement .................................................................................................................. |
7-1 |
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Appendix A ENVIRONMENTAL QUALIFICATION FORM............................................................ |
A-1 |
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Appendix B GDL 88 DATA FORMAT................................................................................................ |
B-2 |
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Appendix C |
MECHANICAL DRAWINGS ......................................................................................... |
C-5 |
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Appendix D |
INTERCONNECT DIAGRAMS...................................................................................... |
D-6 |
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LIST OF FIGURES |
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Figure 3-1. |
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GPS Antenna Installation Considerations .............................................................................. |
3-4 |
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Figure 4-1. |
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Coaxial Cable Installation ...................................................................................................... |
4-4 |
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LIST OF TABLES |
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Table 1-1. GDL 88 Units .......................................................................................................................... |
1-1 |
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Table 1-2. Approved GPS/SBAS Antennas.............................................................................................. |
1-5 |
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Table 1-3. |
TSO Authorization .................................................................................................................. |
1-7 |
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Table 1-4. Non-TSO Functions................................................................................................................. |
1-8 |
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Table 1-5. |
System Functions..................................................................................................................... |
1-8 |
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Table 4-1. |
Catalog Part Numbers.............................................................................................................. |
4-1 |
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Table 4-2. |
Standard Kit Accessories......................................................................................................... |
4-1 |
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Table 4-3. Recommended Crimp Tools (or Equivalent)........................................................................... |
4-3 |
GDL 88 TSO Installation Manual |
Page iii |
190-01122-00 |
Rev. A |
GDL 88 MOD LEVEL HISTORY
The following table identifies hardware modification (Mod) Levels for the GDL 88, GDL 88D, GDL 88 with GPS/SBAS and GDL 88D with GPS/SBAS. 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 Garminprovided user name and password.
Mod Level |
Service Bulletin Number |
Service Bulletin Date |
Purpose Of Modification |
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Page iv |
GDL 88 TSO Installation Manual |
Rev. A |
190-01122-00 |
1 GENERAL DESCRIPTION
1.1Introduction
This manual is applicable for GDL 88 units with software version 2.00 or later. This manual describes the physical, mechanical, and electrical characteristics, as well as instructions and other conditions and limitations for installation and approval of the GDL units. Refer to Section 2, Limitations, for additional information and other considerations.
NOTE
Except where specifically notes, references made to GDL 88 will equally apply to GDL 88 with GPS/SBAS, GDL 88D, and GDL 88D with GPS/SBAS units.
Table 1-1. GDL 88 Units
Model |
Part Number |
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GDL 88 |
010-00859-00 |
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GDL 88 with GPS/SBAS |
010-00860-00 |
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GDL 88D |
010-00861-00 |
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GDL 88D with GPS/SBAS |
010-00862-00 |
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1.2Equipment Description
The GDL 88 is a remote-mounted product that contains a 978 MHz Universal Transceiver (UAT) and a 1090 MHz receiver. The GDL 88 will transmit ownship ADS-B data via the UAT data link. It will receive data from other UAT and 1090ES equipped aircraft, as well as Flight Information Service Broadcast (FIS-B) weather. The received data may be output to an appropriate display.
The GDL 88 Series consist of four variations:
GDL 88
GDL 88, with an internal GPS/SBAS receiver
GDL 88D with dual antenna diversity
GDL 88D, with dual antenna diversity and an internal GPS/SBAS receiver
GDL 88 TSO Installation Manual |
Page 1-1 |
190-01122-00 |
Rev. A |
1.3Technical Specifications
1.3.1 Physical Characteristics
Table 1-2. Physical Characteristics – GDL 88 Units
Characteristics |
Specifications |
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Height
Width
Depth (Installed with rack and connectors)
GDL 88 Weight (Unit only)
GDL 88 Weight (Installed with rack)
GDL 88 with GPS/SBAS Weight (Installed with rack)
GDL 88D Weight (Unit only)
GDL 88D Weight (Installed with rack)
GDL 88D with GPS/SBAS Weight (Unit Only)
GDL 88D with GPS/SBAS Weight (Installed with rack)
1.3.2 General Specifications
Table 1-3. General Specifications - GDL 88 Units
Characteristics |
Specifications |
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-45°C to +70°C For more details see |
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Operating Temperature Range |
Environmental Qualification Form on the |
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Dealers Only page on www.garmin.com. See |
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Appendix A for part numbers. |
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Humidity |
95% at 65°C |
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Altitude Range |
50,000 ft (maximum) |
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Input Voltage Range |
9 to 33 VDC |
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External Cooling |
External fan incorporated into GDL 88 |
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backplate is required. |
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See Environmental Qualification Form on the |
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Environmental Testing |
Dealers Only page on www.garmin.com. See |
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Appendix A for part numbers. |
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Page 1-2 |
GDL 88 TSO Installation Manual |
Rev. A |
190-01122-00 |
1.3.3 GPS/SBAS Specifications
Table 1-4. GPS/SBAS Specifications – GDL 88 and GDL 88D with GPS/SBAS
Characteristics |
Specifications |
Number Of Channels |
15 (12 GPS and 3 SBAS) |
Frequency |
1575.42 MHz L1, C/A code |
Sensitivity |
-134.5 dBm GPS |
(Acquisition, No Interference) |
-135.5 dBm WAAS |
Sensitivity (Drop Lock) |
-144 dBm |
Dynamic Range |
> 20 dB |
Lat/Lon Position Accuracy |
<1.25 meter RMS horizontal, <2 meter vertical, with WAAS |
Velocity |
1000 knots maximum (above 60,000 ft) |
TTFF (Time To First Fix) |
1:45 min. typical with current almanac, position, and time |
Reacquisition |
10 seconds typical |
Position Update Interval |
0.2 sec (5 Hz) |
1 PPS (Pulse Per Second) |
275 Nsec of UTC second |
Datum |
WGS-84 |
SATCOM Compatibility |
SATCOM compatibility is dependent upon antenna selection. |
Antenna Power Supply |
35 mA typical, 40 mA max at 4.7 VDC |
1.3.4 978 MHz UAT Transceiver Specifications
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Table 1-5. UAT Transceiver Specifications |
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Characteristics |
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Specifications |
Frequency |
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978.00 MHz |
Transmit Power |
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50 W (+47 dBm) |
Frequency Tolerance |
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+ 20 PPM |
Modulation |
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Continuous Phase FSK, h = 0.6, Raised Cosine shaping, a = 0.5 |
Data Rate |
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1.04 Mbps |
99% Power Bandwidth |
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1.3 MHz |
60 dB Bandwidth |
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3.3 MHz (estimated) |
Receiver Sensitivity |
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-96 dBm for 90% MSR |
GDL 88 TSO Installation Manual |
Page 1-3 |
190-01122-00 |
Rev. A |
1.3.5 1030 MHz Transmitter Specifications
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Table 1-6. Transmitter Specifications |
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Characteristics |
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Specifications |
Frequency |
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1030 MHz |
Transmit Power |
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-29 dBm |
Frequency Tolerance |
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+ 20 kHz |
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1.3.6 1090 MHz Receiver Specifications
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Table 1-7. Receiver Specifications |
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Characteristics |
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Specifications |
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Frequency |
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1090 MHz |
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Frequency Tolerance |
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+ 1 MHz |
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Modulation |
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Binary Pulse-Position |
Data Rate |
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1 Mbps |
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Sensitivity |
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-82 dBm for 90% MSR |
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Page 1-4 |
GDL 88 TSO Installation Manual |
Rev. A |
190-01122-00 |
1.3.7 UAT/1090 Requirements
The GDL 88 requires UHF antenna(s) meeting the following specifications:
Vertically polarized
The VSWR produced by the antenna does not exceed 1.7:1 at 978 MHz and 1.5:1 at 1090 MHz.
TSO-C66, TSO-C74, or TSO-C112 antennas that also meet the VSWR specification.
NOTE
Certain types of transponder antennas that utilize very thin radiator elements are only intended for use at 1030 and 1090 MHz. These types of antennas should be evaluated on a model-by-model basis to determine their suitability as UAT data link antennas.
CAUTION
Operating the GDL 88 without RF terminations on the top or bottom UAT antenna ports can result in equipment damage. Always operate the GDL 88 with the top and bottom
UAT antenna ports terminated with a VSWR ration of 3.0:1 or less.
1.3.8 GPS Antenna Requirements
Antenna performance is critical to the GPS/SBAS operation. The antennas listed in Table 1-8 provide acceptable performance with the GDL 88.
Table 1-8. Approved GPS/SBAS Antennas
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Garmin |
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Model/Description |
Conn Type |
Mfr |
Part Number |
Order |
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Number |
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GA 35, GPS/WAAS |
TNC |
Garmin |
013-00235-( |
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013-00235-( ) |
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[1] |
Aero Antenna |
AT575-93G( )-TNCF-000-RG-27-NM |
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GA 36, GPS/WAAS |
TNC |
Garmin |
013-00244-( |
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013-00244-( ) |
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Aero Antenna |
AT575-126G( )-TNCF-000-RG-27-NM |
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GA 37, GPS/WAAS/XM |
TNC |
Garmin |
013-00245-( |
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013-00245-( ) |
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Aero Antenna |
AT2300-126G( )-TNCF-000-RG-27-NM |
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A33W, WAAS Antenna |
TNC |
Garmin |
013-00261-( |
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013-00261-( ) |
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Aero Antenna |
AT575-332G( )- TNCF-000-RG-27-NM |
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GPS/VHF Antenna |
TNC/BNC |
Comant |
CI-2580-200 |
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N/A |
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[2] |
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GPS/VHF Antenna |
TNC/BNC |
Comant |
CI-2728-200 |
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N/A |
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[2] |
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GPS/XM/VHF Antenna |
TNC/TNC/BNC |
Comant |
CI-2580-410 |
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N/A |
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[3] |
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GPS/XM/VHF Antenna |
TNC/TNC/BNC |
Comant |
CI-2728-410 |
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N/A |
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[3] |
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GPS/WAAS Antenna |
TNC |
Comant |
CI-428-200 |
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N/A |
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GPS/XM Antenna |
TNC/TNC |
Comant |
CI-428-410 |
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N/A |
[1]Same mounting hole pattern as GA 56, but GA 35 antenna has a physically larger footprint.
[2]The antenna connector is a TNC type. The VHF connector is a BNC type.
[3]The antenna connector is a TNC type. The XM connector is a TNC type. The VHF connector is a BNC type.
GDL 88 TSO Installation Manual |
Page 1-5 |
190-01122-00 |
Rev. A |
1.4License 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 GTN 750 installations must comply with current transmitter licensing requirements. In the US, 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. Outside the US, contact the responsible telecommunication authority. The
GTN 750 owner accepts all responsibility for obtaining the proper licensing before using the transceiver. The maximum transmitting power, modulation identification, and frequency band information may be required for licensing and are detailed in Section 1.4.4.
CAUTION
The VHF transmitter in this equipment is guaranteed to meet Federal Communications Commission acceptance over the operating temperature range. Modifications not expressly approved by Garmin could invalidate the license and make it unlawful to operate the equipment.
NOTE
Canadian installations are required to meet Industry Canada specifications for maximum radiation as documented in Radio Specifications Standard 102 (RSS-102). For more information about RF exposure and related Canadian regulatory compliance, contact:
Manager, Radio Equipment Standards Industry Canada
365 Laurier Avenue Ottawa, Ontario K1A 0C8
In accordance with Canadian Radio Specifications Standard 102 (RSS 102), RF field strength exposure to persons from an antenna connected to this device should be limited to 60V/m for controlled environment and 28 V/m for uncontrolled environment.
Page 1-6 |
GDL 88 TSO Installation Manual |
Rev. A |
190-01122-00 |