Furuno FM-8500 Receiver, DSC Section, Protocol, M.689-2, Modulation Rate Baud -30 p.p.m. max

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Receiver

Frequency Range:	155.000 to 166.075 MHz
Receiving System:	Double-Conversion Superheterodyne
Intermediate Frequency:	First IF: 21.4 MHz
	Second IF: 455 kHz
Sensitivity:	-8dBmV at SINAD 12 dB
Adjacent Channel Selectivity:	70 dB min.
Spurious Response Rejection:	70 dB min.
Audio Output:	Internal Speaker:3W min. (8ohms)
	Handset:	2mW min. (200ohms)

DSC Section

Protocol:	Complies with ITU-R Rec. M.493-9 (ClassA), M.541-8
	and M.689-2
Modulation Rate:	1200 baud –30 p.p.m. max.
Modulation:	AFSK
Modulation Frequency:	Mark: 1300 Hz –10 Hz max.
	Spece: 2100 Hz –10 Hz max.
Nav. Equipment Interface:	IEC61162-1 (NMEA0183 Ver. 2.00)
CH70 Receiver Sensitivity:	Symbol Error Rate 10-2, input -3dBmV

9-2

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Contents VHF Radiotelephone 00080762901 Cancelling a False Distress Alert Page Iii Table of Contents Maintenance Troubleshooting Diagnostic Test System ConfirmationVii FeaturesProgram number System Configuration ViiiThis page is intentionally left blank VHF Radiotelephone Operational Overview Indications Controls, IndicationsControls Telephone Operation Turning the loudspeaker on/off Output powerTransmitting ChannelRemarks on voice communications Dual watchScanning PriorityThis page is intentionally left blank DSC Terminal Operational Overview DSC MessagesUTC Universal Time Coordination Channel Voice communication channelPos Ship’s position ACK RQ BQControls, LEDs LEDsKeyboard Normal display When blinking question mark appearsBasic Operation Selecting and registering itemsPrepare message and then transmit it Preparing and Transmitting MessagesPreparing message for immediate transmission Preparing and storing message for later transmissionStatus of FM-8500 during DSC Call Key entry of VHFAuto function Auto AcknowledgeTurning & Auto ACK on/off Manual functionPage Transmitting the distress call Provide the following information to the coast station Distress call Distress communicationsEntering data manually Canceling manually entered dataManual Entry of Ship’s Position and Time Confirming Ships Position and TimeProcedure when in area A1 Receiving Distress Alert from Other ShipCS and/or RCC? Progress? Yes Transmitting Dist ACK over CH16 Transmitting Dist ACK After transmitting Dist ACKGeneral ProcedureDistress Relay From previous Wait for relay ack This page is intentionally left blank Transmitting Individual Calls General procedureDSC Communication Detailed procedure Prepare and transmit a message as followsSelect ROU Received Setting of Able or Unable Receiving Individual Call ACK RQFM-8500 sends the ACK BQ signal automatically Receiving individual call message ACK RQ with Auto ACK OnReceiving ACK RQ with Auto ACK Off ACK BQFrom previous When changing communication mode When to use All Ships Call Transmitting All Ships CallsPlace 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 Detailed procedure Procedure for off hook statusSelect END and press the ENT key Page END Writing Over Files Example You want to write over file saved under file numberTransmitting a file Retrieving, Transmitting FilesRetrieving a file Press the 9 Xmtd key at the normal display Transmit/Receive Message MemoryRetrieving a transmit message Transmitting retrieved message You can transmit a retrieved message as followsPress the 8 Rcvd key at normal display Receive message memoryRetrieving a receive message Select ORDINARY, then press the ENT key Other Calling Types Selection of calling typeRefer to Individual call Refer toTelephone call semi-auto/auto call All ships call Refer toMedical transport All ships call Position request individual callPolling call individual call Neutral craft All ships callMaking Telephone Calls Pstn Call Operation after making DSC call Receiving Telephone Call from Coast Station Other Station IDs and Telephone Nos RegisteringRetrieving This page is intentionally left blank Automatic printing Other SettingsPrinter Setup Auto/Manual Manual printing Printing Timing of 4 key pressing Example PringoutExample printout Turning Keyboard Click ON/OFF You can turn keyboard click response on or off as followsAural Alarm Setup This page is intentionally left blank Overview System ConfirmationConfirming Own Ship’s ID Own Ship’s ID can be confirmed as followsConfirming ROM Version At screen 1 previous page, select V and press the ENT keyConfirming VHF Section Settings At screen 1 on page 7-1, select RT and press the ENT keyAt screen 1, select CH and press the ENT key Confirming VHF ChannelsYou can confirm VHF channels registered as follows VHF channel statusConfirming Tx Output Power This page is intentionally left blank Troubleshooting Maintenance & TroubleshootingMaintenance Antenna connectorsDiagnostic Test Transmit Power NG This page is intentionally left blank Transmitter SpecificationsGeneral Protocol ReceiverDSC Section M.689-2Menu List 10-110-2 10-3 This page is intentionally left blank Page Page Isolation Input sentencesLoad requirements as listner Input impedance Ohms Max. Voltage ThresholdGGA Global positioning system GPS fix data AP-4GLL Geographic position latitude and longitude AP-5RMA Recommended minimum navigation information Loran C data AP-6AP-7 Nature of distress On hook Power settingsFront panel ID number VHF transceiver