64Reference For the ‘Active’ tab, the following SOFT KEY options are available:• Save — allows you to save the current active track log.• Clear — allows you to clear the active track log currently stored in memory.• Defaults — restores the Tracks tab settings to original factory settings.For the ‘Saved’ tab, the following SOFT KEY menu options are available:• Review Map — displays the saved track log on a Track Map page.• Delete Track — deletes highlighted saved track log from memory.• Delete All — deletes all saved track logs from memory.You may also activate a TracBack from any of the saved tracks on this tab.To activate a TracBack from the ‘Saved’ tab list:1. Using the ARROW KEYPAD, highlight the track you wish to use for a TracBack and press NAV.2. The ‘Follow ENTER/MARK.DSC Tab— allows you to control the optional Digital Selective Calling (DSC) interface. Digital SelectiveCalling (DSC) uses marine VHF radio and Global Positioning System (GPS) technologies to transmit andreceive location information. DSC is used by mariners to assist them in two major areas: Distress Calls andPosition Reporting.An emergency DSC Distress Call allows a vessel in trouble to transmit a substantial amount of infor-mation in a single transmission or “call,” without the need for voice communication. When any nearbyrescuer receives the DSC signal, an alarm sounds and they immediately receive the position of the caller.The rescuer may then choose to navigate (Go To) the caller’s position to assist or forward the call on to theCoast Guard. When the Coast Guard receives the call, they can immediately access the caller’s information(such as who they are and the type of vessel) in their database while they are in transit to the caller’s posi-tion.A non-emergency DSC Position Report allows mariners to exchange and display the positions of oneanother. Once a DSC position is received, the mariner may choose to create a waypoint or to show thereceived position on an electronic map.The track name automatically appears when highlighted on the‘Saved’ list and NAV is pressed.Main Menu: Tracks/DSC TabsDSC Tab