High Definition Digital Radar means: Exceptional detection of small or distant targets, using advanced digital signal processing. Presents targets better and rejects clutter using 10-bit digital Sensitivity Time Control (STC). Screen-clutter from rough weather is cleared away using sensitivity settings tailored for specific conditions.High Performance Scanners. Networked Radar System. Brand New Digital Signal Processing Technology. Radar/Chart Overlay. Automatic Tune, Gain and Sea Clutter Adjustment. Compatible with 6x00i Series, M-Series, and 8000i Multifunction Displays. Guard-Zone Alarms - If any target detected by the radar enters a user-defined area on the display, the Northstar Radar will alert you to its presence.