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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...
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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...
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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.
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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.
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.
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.
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).
System Function Level NOTE All GDL 88 unit functions are design approved under the TSO. Unauthorized changes or modifications to any GDL 88 unit product may void the compliance to required regulations and authorization for continued equipment usage. Page 1-8 GDL 88 TSO Installation Manual Rev.
Garmin in lieu of repair. Within the applicable 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 will be responsible for any transportation cost.
The article may be installed only if performed under 14 CFR part 43 or the applicable airworthiness requirements. The GDL 88 GPS/SBAS receiver, when installed with an appropriate antenna listed in Section 1.3.8, is compatible with aircraft equipped with SATCOM when installed in accordance to this manual.
Installations.” 3.1 Antenna Considerations This section contains mounting location considerations for the antennas required for the GDL 88 units. For mounting the GPS/SBAS antenna, refer to FAA approved data. For mounting the NAV antennas, refer to the aircraft manufacturer‟s data.
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Also varying the mounting location will help minimize any aircraft shading by the wings or tail section (in a particular azimuth, when one antenna is blocked the other antenna may have a clear view). GDL 88 TSO Installation Manual Page 3-3 190-01122-00...
For details regarding antenna selection, refer to Section 1.3.8. Once the antenna type is decided upon, refer to the information below for detailed parts information for antennas available directly from Garmin. Contact the manufacturer directly for information on other antennas.
Amphenol RF, Four Old Newtown Road, Danbury, CT 06810 Phone: 800-627-7100 4.4 Installation Materials not Supplied 4.4.1 Installation Materials Required but not Supplied The GDL 88 is intended for use with the standard aviation accessories. The following items are required for installation, but not supplied. Wire (MIL-W-22759/16 or equivalent) Shielded Wire (MIL-C-27500 or equivalent) Mounting Screws (8 minimum –...
EXCESS BRAID. SOLDER CONTACT TO CENTER CONDUCTOR. 5. INSERT CABLE CLAMP AND GASKET INTO CONNECTOR BODY MAKING SURE THAT SHARP EDGE OF CLAMP SEATS PROPERLY AND TIGHTEN NUT. Figure 4-1. Coaxial Cable Installation Page 4-4 GDL 88 TSO Installation Manual Rev. A 190-01122-00...
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[2] Contacts listed are not to be used for configuration module wiring. Use the contacts supplied with the configuration module when installing configuration module wires in P1001. [3] Non-Garmin part numbers shown are not maintained by Garmin and are subject to change without notice. GDL 88 TSO Installation Manual...
VHF COM transceiver to reduce or eliminate the harmonic interference. A notch filter for this use (P/N 330-00067-00) is available from Garmin. If a VHF COM transmitter causes problems with the GPS on the selected frequencies as listed in the post- installation checkout, the problem may be due to the ELT.
ARINC 429 OUT 1B ARINC 429 OUT 2B FAN POWER (5V) RS-422 IN 2A RS-422 IN 2B RS-422 OUT 2A RS-422 OUT 2B IDENT* AUDIO INHIBIT IN* PRESSURE ALT BROADCAST INHIBIT* GDL 88 TSO Installation Manual Page 5-1 190-01122-00 Rev. A...
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AIRCRAFT GND An asterisk (*) following a signal name denotes that the signal is an Active-Low, requiring a ground to activate. If there is no asterisk, the signal is an Active-High. Page 5-2 GDL 88 TSO Installation Manual Rev. A 190-01122-00...
The GDL 88 units do not require regular cleaning. Battery Replacement The GDL 88 with GPS/SBAS and the GDL 88D with GPS/SBAS includes an internal battery that will last about 10 years. The battery is used for internal RAM memory and GPS system information. Regular planned replacement is not necessary.
Appendix A ENVIRONMENTAL QUALIFICATION FORM For RTCA/DO-160F Environmental Qualification Forms (EQFs) visit the Dealers Only site on http://www.garmin.com. The GDL 88 units all use the same EQF, part number 005-00358-20. GDL 88 TSO Installation Manual Page A-1 190-01122-00 Rev. A...
Encoder) with a word length of 8 bits, one stop bit, and no parity. One message is received per second. B.1.2 Icarus Altitude Sentence The GDL 88 is capable of receiving the following 10-byte message from the Icarus Altitude Serializer: ALT <sp>12345<CR>...
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B.1.4 Shadin Altitude Sentence The GDL 88 is capable of receiving the following 17-byte message from Shadin Altitude Encoders, Altitude Serializers, and Altitude Converters: RMS<sp><+/->12345T<+/->12ul<CR> Where: ASCII characters <sp> space (0x20) <+/-> sign indicator (0x2b["+"] or 0x2d["-"]) 12345 altitude in feet ASCII character <+/->...
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B.1.5 Shadin Fuel/Air Data Computer The GDL 88 is capable of receiving the following message strings from the Shadin Fuel/Air Data or Air Data Computer: SHADIN “z” FORMAT <STX> ZA012<CR><LF> "ZA" (ASCII characters); "012" represents indicated Air Speed (knots) ZB345<CR><LF>...
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