① Press and release-enter highlighted options or confirmation information;
② Press and hold-mark your current position as a waypoint;
③ Move up and down/left and right —a means to move in list options, B means to move to buttons or icons on the screen, C means to input Chinese and data, and D means to move the map page arrow. Please note that when using the mouse button to adjust the up, down, left and right directions, just push the mouse button gently in these directions. During the main page conversion operation, all GPS information can be found on five main pages, and you can switch between Satellite Page, Navigation Page, Travel Computer Page and Main Menu Page just by pressing the page turn key. Positioning process: Turn on the power and enter the status screen to show the progress in the open sky outdoors. When more than three satellite signals are captured and locked, the handheld GPS will immediately calculate the current position, and automatically switch the screen to the positioning screen to display the positioning data in the screen, so that the positioning data (X, Y, Z data) can be stored or recorded.
Positioning accuracy: GPS positioning data and known topographic points (survey control points or obvious points of topographic features) can judge positioning accuracy. Any location where waypoints are saved can be artificially defined and stored in memory, and the location points stored in this way are called waypoints. The method of saving waypoints is gradually realized by using the waypoint key function, and is divided according to the naming method. There are two methods: ① Handheld GPS automatically names and stores waypoints; (2) Operators store waypoints under pseudonyms.