Understanding Call Acknowledgment for Furuno FM-8500 Models

4.2 Receiving Individual Call (ACK RQ)

General

When an individual call is received, the FM-8500 responds to the call depending on the setting of automatic acknowledge (AUTO ACK) function:

• AUTO ACK: ON (“auto” appears.)

The DSC transmits the acknowledge back (ACK BQ) signal automatically.

• AUTO ACK: OFF (“manual” appears.)

Verify contents of receive message by pressing the [ENT] key successively, then manually transmit the ACK BQ signal by pressing the [CALL] key.

Individual call (ACK RQ)

Own Ship

Coast Station

Figure 4-2 Receiving "Individual Call"

Setting of “ABLE” or “UNABLE”

When AUTO ACK function is ON, you can select either “able” or “unable” (to comply) for proposal from other station. See the next page.

4-5

Image 41

Furuno FM-8500 manual Receiving Individual Call ACK RQ, Setting of Able or Unable

Contents

VHF Radiotelephone 00080762901 Cancelling a False Distress Alert Page Iii Table of Contents System Confirmation Maintenance Troubleshooting Diagnostic Test Vii FeaturesProgram number Viii System Configuration This page is intentionally left blank VHF Radiotelephone Operational Overview Indications Controls, IndicationsControls Telephone Operation Transmitting Output powerTurning the loudspeaker on/off Channel Scanning Dual watchRemarks on voice communications Priority This page is intentionally left blank DSC Messages DSC Terminal Operational Overview Pos Ship’s position Channel Voice communication channelUTC Universal Time Coordination ACK RQ BQ LEDs Controls, LEDs Keyboard Basic Operation When blinking question mark appearsNormal display Selecting and registering items Preparing message for immediate transmission Preparing and Transmitting MessagesPrepare message and then transmit it Preparing and storing message for later transmission Key entry of VHF Status of FM-8500 during DSC Call Turning & Auto ACK on/off Auto AcknowledgeAuto function Manual functionPage Transmitting the distress call Distress call Distress communications Provide the following information to the coast station Manual Entry of Ship’s Position and Time Canceling manually entered dataEntering data manually Confirming Ships Position and Time Receiving Distress Alert from Other Ship Procedure when in area A1 CS and/or RCC? Progress? Yes Transmitting Dist ACK over CH16 After transmitting Dist ACK Transmitting Dist ACK General 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 procedure Select ROU Received Receiving Individual Call ACK RQ Setting of Able or Unable Receiving individual call message ACK RQ with Auto ACK On FM-8500 sends the ACK BQ signal automatically ACK BQ Receiving ACK RQ with Auto ACK Off From previous When changing communication mode Transmitting All Ships Calls When to use All Ships Call Place 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 procedure Select END and press the ENT key Page END Example You want to write over file saved under file number Writing Over Files Transmitting 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 message Press 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 Types Telephone call semi-auto/auto call Individual call Refer toRefer to All ships call Refer to Polling call individual call Position request individual callMedical transport All ships call Neutral craft All ships call Making Telephone Calls Pstn Call Operation after making DSC call Receiving Telephone Call from Coast Station Registering Other Station IDs and Telephone Nos Retrieving This page is intentionally left blank Automatic printing Other SettingsPrinter Setup Auto/Manual Printing Timing of 4 key pressing Example Pringout Manual printing Example printout You can turn keyboard click response on or off as follows Turning Keyboard Click ON/OFF Aural Alarm Setup This page is intentionally left blank Confirming Own Ship’s ID System ConfirmationOverview Own Ship’s ID can be confirmed as follows At screen 1 previous page, select V and press the ENT key Confirming ROM Version At screen 1 on page 7-1, select RT and press the ENT key Confirming VHF Section Settings You can confirm VHF channels registered as follows Confirming VHF ChannelsAt screen 1, select CH and press the ENT key VHF channel status Confirming Tx Output Power This page is intentionally left blank Maintenance Maintenance & TroubleshootingTroubleshooting Antenna connectors Diagnostic Test Transmit Power NG This page is intentionally left blank Transmitter SpecificationsGeneral DSC Section ReceiverProtocol M.689-2 10-1 Menu List 10-2 10-3 This page is intentionally left blank Page Page Load requirements as listner Input sentencesIsolation Input impedance Ohms Max. Voltage Threshold AP-4 GGA Global positioning system GPS fix data AP-5 GLL Geographic position latitude and longitude AP-6 RMA Recommended minimum navigation information Loran C data AP-7 Front panel ID number Power settingsNature of distress On hook VHF transceiver