Furuno FM-8500 manual DSC Terminal Operational Overview, DSC Messages

Page 17

2. DSC Terminal

Operational Overview

2.1 DSC Messages

The contents of a DSC message change with format specifier (call- ing category).

1. Format: Calling type

IND:	Individual Call
TEL:	Telephone Call
ALL:	All Ships Call
R/A:	Relay All Ships Call
R/S:	Relay Specific Ships Call
GRP:	Group Call
POS:	Position Request Call

2. Address: Station’s 9-digit ID number

IDs starting with “00” are coast stations, those starting with “0” are group IDs or another IDs are ship’s IDs.

3. Category: Communication priority

There are four communication priorities as below:

DIS: A vessel is in grave and imminent danger and requests im- mediate assistance.

URG: Announce important safety information or request medical assistance.

SAF: Transmitting a message containing an important navigational or an important meteorological warning.

ROU: For routine (individual) calling.

4. DSC: DSC channel

A DSC channel is different from the usual communication channel because it is not used for voice communication but rather DSC and acknowledging receipt of message.

5. Telecom1: Telecommand

The communication mode; simplex or semi-duplex.

2-1

Image 17

Contents VHF Radiotelephone 00080762901 Cancelling a False Distress Alert Page Iii Table of Contents System Confirmation Maintenance Troubleshooting Diagnostic TestVii FeaturesProgram number Viii System ConfigurationThis page is intentionally left blank VHF Radiotelephone Operational Overview Indications Controls, IndicationsControls Telephone Operation Transmitting Output powerTurning the loudspeaker on/off ChannelScanning Dual watchRemarks on voice communications PriorityThis page is intentionally left blank DSC Messages DSC Terminal Operational OverviewPos Ship’s position Channel Voice communication channelUTC Universal Time Coordination ACK RQ BQLEDs Controls, LEDsKeyboard Basic Operation When blinking question mark appearsNormal display Selecting and registering itemsPreparing message for immediate transmission Preparing and Transmitting MessagesPrepare message and then transmit it Preparing and storing message for later transmissionKey entry of VHF Status of FM-8500 during DSC CallTurning & Auto ACK on/off Auto AcknowledgeAuto function Manual functionPage Transmitting the distress call Distress call Distress communications Provide the following information to the coast stationManual Entry of Ship’s Position and Time Canceling manually entered dataEntering data manually Confirming Ships Position and TimeReceiving Distress Alert from Other Ship Procedure when in area A1CS and/or RCC? Progress? Yes Transmitting Dist ACK over CH16 After transmitting Dist ACK Transmitting Dist ACKGeneral ProcedureDistress Relay From previous Wait for relay ack This page is intentionally left blank Transmitting Individual Calls General procedureDSC Communication Prepare and transmit a message as follows Detailed procedureSelect ROU Received Receiving Individual Call ACK RQ Setting of Able or UnableReceiving individual call message ACK RQ with Auto ACK On FM-8500 sends the ACK BQ signal automaticallyACK BQ Receiving ACK RQ with Auto ACK OffFrom previous When changing communication mode Transmitting All Ships Calls When to use All Ships CallPlace the cursor on ALL Press the ENT key Press the t key. To return to previous menu From previous Status of FM-8500 Procedure for on hook statusReceiving All Ships Calls Procedure for off hook status Detailed procedureSelect END and press the ENT key Page END Example You want to write over file saved under file number Writing Over FilesTransmitting a file Retrieving, Transmitting FilesRetrieving a file Press the 9 Xmtd key at the normal display Transmit/Receive Message MemoryRetrieving a transmit message You can transmit a retrieved message as follows Transmitting retrieved messagePress the 8 Rcvd key at normal display Receive message memoryRetrieving a receive message Select ORDINARY, then press the ENT key Selection of calling type Other Calling TypesTelephone call semi-auto/auto call Individual call Refer toRefer to All ships call Refer toPolling call individual call Position request individual callMedical transport All ships call Neutral craft All ships callMaking Telephone Calls Pstn Call Operation after making DSC call Receiving Telephone Call from Coast Station Registering Other Station IDs and Telephone NosRetrieving This page is intentionally left blank Automatic printing Other SettingsPrinter Setup Auto/Manual Printing Timing of 4 key pressing Example Pringout Manual printingExample printout You can turn keyboard click response on or off as follows Turning Keyboard Click ON/OFFAural Alarm Setup This page is intentionally left blank Confirming Own Ship’s ID System ConfirmationOverview Own Ship’s ID can be confirmed as followsAt screen 1 previous page, select V and press the ENT key Confirming ROM VersionAt screen 1 on page 7-1, select RT and press the ENT key Confirming VHF Section SettingsYou can confirm VHF channels registered as follows Confirming VHF ChannelsAt screen 1, select CH and press the ENT key VHF channel statusConfirming Tx Output Power This page is intentionally left blank Maintenance Maintenance & TroubleshootingTroubleshooting Antenna connectorsDiagnostic Test Transmit Power NG This page is intentionally left blank Transmitter SpecificationsGeneral DSC Section ReceiverProtocol M.689-210-1 Menu List10-2 10-3 This page is intentionally left blank Page Page Load requirements as listner Input sentencesIsolation Input impedance Ohms Max. Voltage ThresholdAP-4 GGA Global positioning system GPS fix dataAP-5 GLL Geographic position latitude and longitudeAP-6 RMA Recommended minimum navigation information Loran C dataAP-7 Front panel ID number Power settingsNature of distress On hook VHF transceiver