Lowrance electronic LVR-250 Sending and Receiving DSC Calls, What is DSC?, Sending DSC calls

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Section 5 - Sending and Receiving DSC Calls

WARNING

A valid USER MMSI must be entered into this radio before these DSC functions can be used. See 4-2 Enter Your USER MMSI (USER MMSI).

5-1 What is DSC?

DSC (Digital Selective Calling) is a semi-automated method of establishing VHF, MF, and HF radio calls. It has been designated as an international standard by the IMO (International Mari- time Organization) and is part of the GMDSS (Global Maritime Distress and Safety System).

Currently, you are required to monitor Distress Channel 16, but DSC will eventually replace listening watches on distress frequencies and will be used to broadcast routine and urgent maritime safety information.

DSC enables you to send and receive calls from any vessel or coast station that is equipped with DSC functionality, and within geographic range. Calls can be categorised as distress, urgency, safety, or routine, and DSC selects a working channel automatically.

5-2 Sending DSC calls

DSC CALL INDIVIDUAL

>LAST CALL

GROUP

1.Press CALL to show the types of DSC call that can be made.

Note that only four DSC call types can be shown at any one time on the screen.

2.Press + or - to scroll up and down the DSC call types until the cursor is positioned at the desired option. Then press ENT. The DSC call types are:

The following options are available through CALL key:

INDIVIDUAL

LAST CALL

GROUP

ALL SHIPS

CALL LOG

DIST LOG

LL REQUEST

Make a individual call or acknowledgement to a new caller or a buddy. See Section 5-2-1,5-2-2, and 5-2-3.

Show the details of the most recent incoming call. See Section 5-2-4.

Make a call to one of your three groups. See Section 5-2-5.

Make an All Ships call. See Section 5-2-6.

Show the details of the 20 most recent incoming calls. See Section 5-2-7.

Show the details of the 10 most recent distress calls. See Section 5-2-8.

Request the LL position of a buddy. See Section 5-2-9.

Lowrance - LVR-250 Installation and Operation Instructions

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Contents LVR-250 Avoided, could result in minor or moderate injury Please read carefully before installation and useSymbol to avoid possible injury or death Avoided, could result in death or serious injuryTable of Contents Radio Setup Menu Radio Setup Acknowledgement of an Individual Incoming Call Indiv Location Requirements InstallationInstallation Options Two flat screws for the microphone bulkhead mount ChecklistChange the Viewing Angle Gimbal InstallationRecessed Installation Hang the microphone on its mount Install the Microphone Bulkhead MountDrill the two pilot screw holes where marked Connect the Radio Cables Connectors are on the rear of the base unit, as followsFix the DSC label Enter Your User Mmsi Set Up the RadioWiring for GPS/COM connector Pin Wire Function Speaker Completed InstallationBlack Power Cable Battery ExternalLowrance LVR-250 Installation and Operation Instructions General Information FeaturesCustomizing your Lowrance VHF Radio How to Display and Navigate MenusHow to Enter Alphanumeric Data LCD Symbols and MeaningsTypical operational display is shown here Symbol MeaningSQL Basic Operation and Key FunctionsKey Function VOL/PWRScan 3CHSend DSC Distress Call. See Section CallMenu DistressUIC GPS/DATA DSC Setup Radio Setup GPS SIM Reset Manual SettingRadio Menu Menu Radio Menu Options MenuBuddy List Alex Edit Name Manual NEW Delete Edit Mmsi TOM Maintain Your Buddy List Buddy ListAdd an Entry Edit an EntrySet Distance Sensitivity Local or Distance Sensitivity LOCAL/DISTBacklighting Backlight and Contrast Contrast Delete an EntryManually Enter Position and UTC Time Manual Set the Backlighting LevelSet the Contrast Level Time Format Options Time Format GPS/DATA Setting Manual Time Offset Time Format Time DisplySetting Time Offset Time Format Time Disply Local Time Time OffsetCourse & Speed Display Options COG/SOG Time Display Options Time DisplayPosition Display Options LL display GPS Alert Options Alert Reset to Factory Defaults ResetReset Radio are YOU Sure YES GPS Simulator SimulatorChannel UIC Radio Setup Menu Radio SetupRadio Setup Menu Radio Setup Radio Setup UICInternal Speaker Connections INT Speaker Ring & Beep Volume Ring Volume and KEY BeepChannel Names CH Name LVR-250 US only Set the Priority Channel Watch ModeWeather Alert Wx Alert Nmea protocol COM PortEnter Your User Mmsi User Mmsi DSC Setup Menu DSC SetupDSC Setup Menu Options DSC SetupEdit Group Name Details Maintain Your Groups Group SetupCreate a Group Group Setup Delete Group FISHER2 YES Response to Individual Calls Indiv ReplyAtis Mmsi & Atis Functionality Delete a GroupAtis Mmsi Enable Atis Functionality Atis Func LVR-250 EU onlyMmsi Atis Mmsi Store Cancel Enter or Edit Your Atis MmsiOFF DSC functionality options DSC FuncResponse Type to LL Polling Calls LL Reply AutoDSC Call Individual Last Call Group What is DSC?Sending and Receiving DSC Calls Sending DSC callsRetrying a Routine Call Make a Routine Call IndividualChannel Request ESC Exit Acknowledgement of an Individual Incoming Call IndivRecall the Most Recent Incoming Call Last Call a Group GroupUrgency Call using the Call Log Call LOGSafety Call All Ships ALL ShipsCall distress relay to individual using the Distress Log Call using the Distress Log Dist LOGCall distress relay using the Distress Log Dist LOG ALL Call distress relay to all ship using the Distress LogRequest the LL Position of a Buddy LL Request ALL Ships Distress Call LOG Flooding Dist LOGReceiving an Individual Call Indiv Receiving DSC CallsReceiving an All Ships Call ALL Ships Receiving a Polled Position Call Position Receiving a Group Call GroupReceiving a Geographic Call Geograph Sending a Distress Call Distress CallsDistress Relay from SAM ESC Exit Receiving a Distress Call DistressDistress Acknowledgement distress ack or Relay Physical Appendix a Technical SpecificationsFeatures Lowrance LVR-250 GeneralReceiver MmsiMmsi and Name Directory Yes 20 numbers & group TransmitterNo sound from the external speaker Appendix B TroubleshootingTransceiver will not power up Battery symbol is displayedInternational Channel Chart Appendix C VHF Marine Channel ChartsSpecial Notes on International Channel Usage USA Channel Chart Special Notes on USA Channel Usage Canada Channel Chart Special Notes on Canada Channel Usage Traffic Type Name Remark Weather ChannelsCountry Specific table Appendix D EU Inland Waterway ChannelsGeneral remarks to Country Specific table Explanation of specific footnotes in Country Specific table Name TAG Special ChannelsReorient or relocate the receiving antenna Appendix E Mmsi and License InformationFCC Compliance Navico Full Two-Year Lowrance VHF Warranty Outside Canada and the USA How to Obtain ServiceUSA CanadaShipping Information Accessory Ordering Information for all countriesPage MN000794B-G Lowrance PubNavico