LCD screen with adjustable backlighting to accommodate varying light conditions. A special context-sensitive interface allows you to place the cursor on a waypoint or other object shown on the chart and have the unit provide you with different navigation options. The system is also compatible with electronics that use NMEA, such as autopilots and depthsounders, the data for which can be displayed on a split screen. The Chart Master 7MX uses C-MAP NT digital cartography and can store up to 600 waypoints and up to 25 routes with 50 waypoints each. Measuring 8 inches wide by 5.75 inches tall and 2 inches deep, it is compact enough to fit most applications.
Cold starts take about one minute, but hot starts take only eight seconds.
It also has an active-matrix screen and dual processors for fast and seamless scrolling and redrawing. It will store up to1,000 track-log points and 2,000 waypoints with 20 reversible routes of up to 30 waypoints each. Zoom keys and context-sensitive soft keys permit convenient customization of the map and navigation data. Acquisition times are 45 seconds for cold starts and 15 seconds for warm starts. The Furuno GP1850D is another Differential GPS that offers an adjustable color display, which enhances distinguishing chart features.