G300 Installation Manual – Installation Overview Page 1-1190-00921-01 Revision A1 G300 Installation Overview1.1 Unpacking UnitCarefully unpack the equipment and make a visual inspection of the unit for evidence of damage incurredduring shipment. If the unit is damaged, notify the carrier and file a claim. To justify a claim, save theoriginal shipping container and all packing materials. Do not return the unit to Garmin until the carrierhas authorized the claim.Retain the original shipping containers for storage. If the original containers are not available, a separatecardboard container should be prepared that is large enough to accommodate sufficient packing materialto prevent movement.1.2 IntroductionThis manual provides an overview of the G300 and its mechanical and electrical installation aspects.NOTEThe Garmin G300 is not a TSO-certified product and has received noFAA approval or endorsement.The following outline describes the organization of this manual:Section 1 This section contains a basic overview of the G300 system and interface. A Blockdiagram is given to aid in the understanding of the system. This section also containsgeneric information that pertains to all components of the G300 system, such asmounting, wiring, and antenna location.Section 2 This section describes the mechanical, electrical, and installation aspects of theGDU 37X.Section 3 This section describes the mechanical, electrical, and installation aspects of theGMU 44.Section 4 This section describes the mechanical, electrical, and installation aspects of theGSU 73.Section 5 This section describes the mechanical, electrical, and installation aspects of theGTP 59.Section 6 This section describes the mechanical, electrical, and installation aspects for theantenna(s).Section 7 This section describes the non-G300 LRU interfaces.Section 8 This section contains software, configuration, database, and XM activationinformation.Section 9 This section contains post-installation checkout for the G300.Section 10 This section contains G300 troubleshooting information.Section 11 This section contains information for ensuring the unit is suitable to be returned toservice.Appendix A This section contains pinout information for all G300 LRU’s.Appendix B This section contains outline and installation drawings for the Garmin G300 LRU’s.