114 Version 2.0Operator’s Manual ConfigurationThe COM1 port of the PC must be connected to the RS-232 port ofNMEA 2 of the CDU (refer to the Installation & Service Manual).Note: The message “Function is not active” will be shown whenthe WPT, RTE or TIDE keys are pressed when the MX480chart mode is activated.Navigation - Navigation Method & Waypoint Pass CriterionControlThis screen sets the navigation mode to Rhumb Line or Great Circle,Cross-track Error limits and alarms, Waypoint Pass Criterion, andWaypoint Approach alarms. These settings have a direct effect onyour route calculation and how data is displayed in the NAV and PLOTscreens.Navigation:Sets navigation to Rhumb Line (default) or Great Circle mode.Note: When the navigation mode is set to Great Circle, the PLOTscreens will not show your course or cross-track error lines.Range Unit:Sets the unit of measure for all range calculations. You can choosebetween Nautical Mile (default), Nautical Mile & Meters, Nauti-cal Mile & Feet, Statute Mile, Statute Mile & Meters, StatuteMile & Feet, Kilometers, and Kilometers & Meters.