Lowrance HDS-9 Gen2 Touch Operation Manual - Page 85

Measuring range and bearing to a target Range rings The range rings are displayed at preset distances from the vessel based on the radar range. You can use the range ring to estimate the distance to a radar echo. Radar menu When the cursor is active, some features on the radar menu will be replaced with cursor mode features. Tap Clear cursor to return to the normal radar menu. Adjust No cursor Gain The gain controls the sensitivity of the radar receiver. A higher gain makes the radar more sensitive to radar returns, allowing it to display weaker targets. If the gain is set too high, the image might be cluttered with background noise. Active cursor Gain has a manual and an automatic mode. You can only adjust the gain value in manual mode by vertically dragging the gain slide bar. ¼¼ Note: Auto mode will work best in most conditions Sea clutter Sea clutter is used to filter the effect of random echo returns from waves or rough water near the vessel. When you increase Sea Clutter filtering the on-screen clutter caused by the echoes of waves will be reduced. Sea clutter has a manual mode and two automatic modes (harbor, offshore). Select manual mode to make adjustments to Sea clutter. Automatic modes use a combination of Gain/Sea Clutter settings best suited for the selected mode (Harbor, Offshore). Radar | Lowrance HDS Gen2 Touch | 83