Lowrance HDS-7 Gen2 Touch Operation Manual - Page 94
Radar overlay
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your vessel comes within this distance from a vessel, the symbol will change to the "dangerous" target symbol. An alarm will be triggered if activated in the Alarm settings panel. Vessel alarm settings You can define several Vessels alarms to alert you if a target comes within predefined range limits, or if a previously identified target is lost. Alarm ID Dangerous vessel MARPA target lost MARPA unavailable Description Controls whether an alarm shall be activated when a vessel comes within the predefined CPA or TCPA. See Defining dangerous vessels above. ¼¼ Note: The check box controls whether the alarm pop-up box is displayed and if the siren will sound. The CPA and TCPA defines when a vessel is dangerous regardless of the enabled/disabled state. Controls whether an alarm shall be activated when a MARPA target is lost Controls whether an alarm shall be activated if you do not have the required inputs for MARPA to work (valid GPS position and heading sensor connected to the radar) Radar overlay You can overlay the Radar image on the Chart. This can help you to easily interpret the radar image by correlating the radar targets with charted objects. When the radar overlay is selected, basic radar operational functions are available from the Chart page menu. ¼¼ Note: You must have a heading sensor connected to your system to use Radar overlay. 92 | Radar | Lowrance HDS Gen2 Touch