51 INTRODUCTION1.1 CAUTIONSCAUTIONThe GPS system is operated by the government of the United States, which is solely responsible for its accuracy andmaintenance. The GLONASS system is operated by the government of Russia, which is solely responsible for itsaccuracy and maintenance. Although the GPS 19x HVS is a precision electronic NAVigation AID (NAVAID), anyNAVAID can be misused or misinterpreted, and therefore become unsafe. Use these products at your own risk. Toreduce the risk, carefully review and understand all aspects of these Technical Specifications before using the GPS19x HVS. When in actual use, carefully compare indications from the GPS to all available navigation sourcesincluding the information from other NAVAIDs, visual sightings, charts, etc. For safety, always resolve anydiscrepancies before continuing navigation.FCCComplianceThis product has been tested and found to comply with Part 15 of the FCC interference limits for Class B digitaldevices FOR HOME OR OFFICE USE. These limits are designed to provide more reasonable protection againstharmful interference in a residential installation, and are more stringent than “outdoor” requirements.Operation of this device is subject to the following conditions: (1) this device may not cause harmful interference,and (2) this device must accept any interference received, including interference that may cause undesired operation.This equipment generates, uses, and can radiate radio frequency energy and may cause harmful interference to radiocommunications if not installed and used in accordance with the instructions. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmful interference to radio ortelevision reception, which can be determined by turning the equipment off and on, the user is encouraged to try tocorrect the interference by one of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and the receiver. Connect the equipment into an outlet that is on a different circuit from the GPS unit. Consult the dealer or an experienced radio/TV technician for help.This product does not contain any user-serviceable parts. Repairs should only be made by an authorized Garmin®service center. Unauthorized repairs or modifications could result in permanent damage to the equipment, and voidyour warranty and your authority to operate this device under Part 15 regulations.