Communications Network | Furuno FELCOM 12 instruction

Communications Network

Figure 4 shows the Inmarsat-C communications network.

Network

Coordination

Station (NCS)

NCS/LES

Signaling Link

NCS/NCS Signaling Link

NCS Common Channel

Data

Communications

Network

Land Earth

Station

(LES)

MES Signaling Channel

MES Message Channel

Mobile Earth

Station (MES)

	Data Terminal
Data Circuit	Equipment (DTE)
Data Circuit
Terminating
Equipment
(DCE)	Enhanced Group
	Enhanced Group

Telex Network

Terrestrial

Communications

Network

LES TDM Channel

Calling (EGC) Receiver

Figure 4 Inmarsat-C communications network

NCS common channel	The NCS has two major functions:
	1) Transmitting information on a com-
	mon channel.
	2) Transmitting EGC messages to MESs.
NCS/LES signalling link	This is the link between NCS and all
	LESs in its region. All EGC messages
	pass through this link.
LES TDM channel	This channel carries the circuit control
	signal for MES and transmits messages
	from LES to MES.
MES message channel	This channel carries messages from
	MES to LES.
MES signaling channel	This channel transmits requests, distress
	alerts, data reports, etc. In addition, it
	carries login and logout from MES to
	NCS.
NCS/NCS signaling link	This is the link between NCSs. It ex-
	changes data between MESs operating
	in different ocean regions.

9

Image 21

Furuno FELCOM 12 manual Communications Network

Contents

INMARSAT-C Mobile Earth Station V 9 9 Safety Instructions Antenna Unit Contents System Initialization Transmitting message stored on floppy disk multiple address INMARSAT-C Communications AP-10 International Telex/Telephone Country Code ListAP-11 AP-12 Numerals in parenthesis are page numbers Vii Viii Operational Overview Program Number This page is intentionally left blank Introduction Foreword Features About This Manual Felcom 12 system configuration Felcom 12 System Configuration INMARSAT-C System Inmarsat-C satellite communication system Inmarsat System Configuration Inmarsat system satellites Coverage area of satellites Communications Network Types of MES Distress/Urgent Receiving Unit IC-303 Peripheral EquipmentDistress Alert Unit IC-302 Distress Message Controller DMC-5Option This page is intentionally left blank Communication Unit When the audible alarm soundsSelf test This chapter provides an overview of the Felcom 12 system Terminal Unit Floppy disk driveFloppy disk Printer PP-510 Printer PP-510 optional supply Key description Esc Keyboard Cannot enter alphabet when the Num LED Appears on the display when the keyboardSelects upper or lower case letters. Press Hold down the key to get upper case letters Shortcut key operation Function MenusFelcom 12 provides the keyboard shortcuts shown below for Commonly used functions Function menu description Selecting menu, menu options Sample menu operation Press F6 to display the Logs menuPress 1 to display the send message log Communication network mode Display IndicationsDistress alert information Communication unit remarks and DCE version number Communication unit statusFrame synchronization Ocean region receiving Logging status Error Messages and AlertsOther information Date and time display Silencing the alarm by the Setup menu Silencing the Audible AlarmPress F8 to display the Setup menu OFF NCS IOR Logout Sync NCS Contents of program disk Two sets of DTEs installed System Settings System setup Press 2 to display the System Setup screenPress Enter to open the date window DTE1POR YY-MM-DDDTE1IOR Offegc EXT DTE1 INTDTE1 ALL DTE2 PC/DATA Auto IOR INMARSAT-C DTE1 OFF Press Esc to open the update window Terminal Setup Login and Logout Login Press 1 to display the Login screenPress Enter to start login Calling NCS IOR LogoutLAT LON Calling NCS IOR Logout LAT NCS IOR Login LAT What is the EGC Enhanced Group Call service? EGC Settings EGC setup Press 5 to display the EGC Setup screenOFF Navtex 22 EGC setup screen, Navarea window Offon Navtex OFF Press Enter to open the Waypoint window Programming EGC channels 26 EGC setup screen, update window Programming NCS Channels Press Enter to open the text windowSelect Yes and press Enter to register input Press Enter to register input Press Esc AOR West AOR East POR IORFreq LES List Operations Programming the LES listPress 2 to display the LES List Southbury Southbury GoonhillyFucino Kumsan IOR Printing the LES list Deleting and changing the LES listLES ID USA LES IDs Programming the station list Station List OperationsOperate / to place the cursor on a blank line Press Enter Telex Telex FAX Press Enter to open the destination type windowCsdn Psdn Dnid Spec Prefix Code Function Editing the station list Printing the station listPress F8, 9 and 1 to display the Station List Entering Own Ship’s Position Press Enter to open the window for latitude entryLAT LON ABC DIR Setting DirectoriesCoieki Comtest Press 5 to display the E-mail Service List Mail Service ListAOR.W AOR.E POR IOR EIK 53 Service station list AOR.W AOR.E POR Mail Setup Press Enter to the update window This page is intentionally left blank Preparing a Message Preparing a routine messagePress F1 to display the File menu Explanation of addressee code and password Preparing a confidential messageCursor is on the first line. Type your message NCS POR Logout Editor menu setup Press F2 to select the Edit menu Cutting and pasting text Select the text you want to copy Copying and pasting text Select All Insert with CitationSearch and Replace Go to line Saving a Message Formatting a floppy diskSelect media type Press Enter Save message, retain place on screen Saving a messagePress Enter. Saving appears on display \SEIZOU Enter a file name Press Enter Save message, clear screen\SEIZOUSE Felcom Opening a file Opening a File Opening a file where a working area is occupied Switching between files 23 Save screen, prompt for saving a message before closing Saving a File Under a New Name Printing a File Combining Files Deleting a FileCoieki Comtest Press Enter. The prompt OK to delete file? appears Mime Multipurpose Internet Mail ExtensionsPress Enter to delete the file, or press Enter to escape Select the file you want to decode Press Enter Rename Do the following to change file name Press F1Select a file you want to rename Press Enter Code description Transmitting Common procedure for transmitting a message Transmitting prepared messageUNTITLED1 Ascii Press Enter to close selection window Transmit message menu, country/ocean code window Transmit message menu, station ID window opened Inet Santa Paula Transmit Press Enter to open the window for address entry Select LES ID Press Enter to close the selection window Procedure for transmitting a message con’t from IA5 11 Transmit message menu, option window opened Transmitting message stored on floppy disk multiple address Transmit Message Status DEG KTS Transmit DEG LES ID YamaguchiNCS IOR Logout LAT JJJ LES ID DEG Frninmbtsts TelexFuruno Frninmbtsts Norway Thermopylae Japan EIKArvi India Kumsan Canceling transmission NCS POR LoginSanta Paul Confirming delivery status message status list Press Enter to open the Cancel windowFelcom Fusa NCS POR Message status list description 24 Request delivery status display Manually requesting delivery status 26 Transmit message menu 2-digit code services For general utility For maritime safety service 27 Transmit message menu, FAX selected Inserting the destinations of a fax terminal Received alarm When a message is receivedReceiving Registration Display log Setting the receive alarmPrinting Saving and filing Displaying receive messages Screen can be scrolled with the up and down arrow keys Printing receive messages Saving receive messages to a floppy disk Press F8 Press 6 to display Auto Mode Setup menuAutomatically saving receive messages Press F6 Press 2 to display the Receive Message Log Press F6 Press 2 to display list of receive messages Deleting receive messages Distress/Urgent Receiving Call Unit IC-303 Display LogDisplaying and printing the display log Press F6 Press 4 to display the Display Log Automatic printing of display log Display send message log or receive message log EGC MessagesDisplaying and reprinting EGC messages Press F6 Press 3. The Display EGC Message screen appears 40 EGC network ID list Displaying EGC closed network ID Enid Tx Message Example Printout TX message is printed when the message result is SuccessReceiving EGC distress or urgent message Confirmation OFF Delivery Confirmed Confirmation on This page intentionally left blank Setting a data report Data ReportingPress F5 to display the Position Reports menu Dnid LES ID Data report menu Select Yes Press Enter to close the Data Report window NAV+SEA INF Setting a message reportPage Polling command on MES signalling channel Polling commandPolling Select Yes Press Enter to finish Other polling command Sample MES message channel printout Polling reception Dnid Data Network Identification Press F8, 6 to display the Auto Print Mode Setup screenDisplaying Dnid Dnid LES Enabling/Disabling Dnid 11 Sample MES signalling channel printout Preparing a Distress Alert Distress Alert Press Enter to register data you’ve just entered Distress Alert setup, requesting confirmation of settings Distress Alert Unit IC-302 Transmitting a Distress Alert Test Menu Testing Distress Button Distress Communications Mayday Mayday Mayday Name isNeed Help Search and Rescue Press Enter to transmit the distress message to the LES Press 3 to select Abort Aborting an Operation Press Enter to start the scanning Scanning NCS Selecting EGC Receiving Channel NCS CCBber AOR West AOR East POR IOR Freq Selecting NCS Channel Safety Information Maintenance Cleaning the terminal unit and communication unit General Checking and MaintenanceChecking connectors and earth terminal When the power can’t be turned on power lamp does not light Self test at power application communication unit Testing the communication unit through the keyboardSelf Tests PV test sequence Performance Verification PV TestROM OK RAM OK DP-RAM OK ROM OK RAM1 OK RAM2 OK Eeprom OK GPS OK DP-RAM OK Press Enter to transmit the PV test request to NCS PV test procedure Results of PV test Interpreting the PV tests results displayDate and time of test System Status Monitor Interpreting the system status monitor Water temperature Replacing Internal BatteryTidal current direction Tidal current speed Error message Meaning Action Error Messages PV Test Dnid Error message Meaning Action This page is intentionally left blank SP-1 Specifications IC-112 & IC-212 Receiving 25W, Transmitting 120W SP-2 AP-1 International Telex/Telephone Country Code List AP-2 AP-3 NTT AP-4 AP-5 AP-6 Area and Country Telephone Telex Country Country Code AP-7 AP-8 AP-9 International Telex Abbreviations AP-10 Glossary of Acronyms AP-11 International Telegraphy Alphabet AP-12 AP-13 AP-14 AP-15 LES IDs List Input sentences Digital Interface IECOutput sentences Transmission interval NAV in port listener Schematic diagramsLoad requirements Isolation Optocoupler Input Impedance 486ohm Max. Voltage ± Data sentences AP-18Input sentences BWC Bearing and distance to waypoint AP-19 BWR Bearing and distance to waypoint -rhumb lineDBT Depth below transducer GGA Global positioning system GPS fix data AP-20 MTW Water temperature AP-21GLL Geographic position latitude and longitude RMA Recommended minimum navigation information Loran C data AP-22 RMB Recommended minimum navigation information AP-23 VDR Set and drift AP-24 AP-25 VTG Course over ground and ground speedWPL Waypoint location ZDA Date and time AP-26 IN-1 Index