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4-3

Antenna base cover removed

Antenna board
(16P0146)

Q7: Pre-driver
(PTB20078)

Q8: Driver
(MRF16006)

Q9: PA (MRF16030)

U4: Circulator

U2: AVR (AN7812F)

Q1: LNA (ATF10136)

Q2: RX RF
(AT41486)

Figure 4-5 Antenna Board

4.2 Communication Unit (IC-212)

BUZZER

DMC 1

DMC 2

ANT

24V DC

BREAKER

DTE 1

DTE 2

DATA

NMEA

GND

Figure 4-6 Communication Unit, Rear Panel

Содержание FELCOM 12

Страница 1: ...INMARSAT C MOBILE EARTH STATION MODEL FELCOM 12 Back...

Страница 2: ...l e r FURUNO ELECTRIC CO LTD c 9 5 2 A s h i h a r a c h o N i s h i n o m i y a J a p a n 6 6 2 Te l e p h o n e 0 7 9 8 6 5 2 1 1 1 Te l e f a x 0 7 9 8 6 5 4 2 0 0 A l l r i g h t s r e s e r v e...

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Страница 13: ...ignal Transfer 1 10 1 Ship originated Call 1 10 2 Shore originated Call 1 12 3 Log in 1 14 4 Log out 1 14 5 Distress Alert 1 15 1 5 Different Classes of Inmarsat C MES 1 16 Class 1 MES 1 16 Class 2 ME...

Страница 14: ...munication Unit IC 212 4 3 4 3 Distress Alert Unit Received Call Unit IC 302 303 4 5 Chapter 5 Maintenance 5 1 PV Performance Verification Test 5 1 5 2 LED Check 5 4 5 3 Check Points 5 5 Measurement o...

Страница 15: ...f test at Power up 6 1 2 Self test by F7 Key F7 Test 6 2 6 2 Description of Status Monitor Display 6 3 Analysis of NG Display 6 5 6 3 Error Messages 6 10 Appendix 1 Menu List AP1 1 Appendix 2 Specific...

Страница 16: ...several LES Land Earth Stations The OCC is the nerve center of the system and is located at Inmarsat s London headquarters The OCC provides round the clock coordination of all functions in the Inmars...

Страница 17: ...1 2...

Страница 18: ...4 Nakhodka 212 Odessa 107 307 Maadi 103 Arvi 306 Umm al Aish 106 Fucino 105 335 Thermopylae 305 Jeddah 315 Yamaguchi 303 203 Santa Paula 201 Sintra 118 Southbury 001 101 Ata 110 310 Kumsan 308 208 Rai...

Страница 19: ...TM service Commercial service 1 Store and forward Telex service In the store and forward techniqne data that is to be transmitted is converted into digital form and sent in data packets over the satel...

Страница 20: ...are also known as the X 25 networks The Internet E mail service uses this network X 400 Electronic Mail The MES can send and receive messages to and from registered subscribers to E mail services whic...

Страница 21: ...ode Land based telex machines use ITA2 The LES converts all codes into ITA2 Codes which cannot be converted is shown with a question mark DATA Known as 8 bit data format Used when sending data Message...

Страница 22: ...sly 24 hours day by the NCS All SESs must be tuned to the NCS common channel when not engaged in message transfer Its main functions are a shore to ship message announcements b ship to shore message a...

Страница 23: ...n each of the NCSs It functions for NCSs to exchange information about SESs currently operational in their coverage area 7 MES interface The MES consists of the Data Circuit Terminating Equipment DCE...

Страница 24: ...t for Transfer Status Request for Message Status Acknowledgement Acknowledgement Requset Bulletin Board Clear Data Packets Distress Alert Ack Distress Test Request Forced Clear Logical Channel Assignm...

Страница 25: ...Assignment SES Message ch Message Acknowledgement Clear ISL MES Status idle END Tunes to NCS CC Decodes BB Tunes to SES signalling channel Tunes to CES TDM Tunes to SES message channel Re tunes to NCS...

Страница 26: ...ES informs the NCS that it is communicating with the MES 5 The LES sends the MES an Assignment packet This establishes the link between LES and MES 6 The MES sends the message on the assigned channel...

Страница 27: ...CS updates data on this MES to busy NCS updates data base MES status changed to idle Message Reception Terrestrial subscriber Call Check if MES is logged in Message Stores all message ISL MES Status R...

Страница 28: ...el packets which the MES uses to select a slot in one of the signalling channels to transmit an Assignment response packet to the LES 9 The MES transmits the Assignment response packet to the LES This...

Страница 29: ...ES Signalling Channel Log out Request NCS CC Log out ACK ISL Interstation Signalling Link Login and Logout Each time the DTE and Communication Unit are turned on the vessel should be registered with t...

Страница 30: ...assigned TDM Channel Demand Assigned TDM Channel DISTRESS ALERT NCS CC DISTRESS ALERT ACK ISL DISTRESS DISTRESS ALERT ACK Records MES distress alerted MES logged out SES Signalling Channel DISTRESS AL...

Страница 31: ...eiving EGC messages when not engaeged in Inmarsat C traffic 2 Ready for EGC reception exclusively and not available in that mode for Inmarsat C message transfer Transmitter Receiver Message Processor...

Страница 32: ...15 bytes 128 bytes Bulletin Board Every frame Every frame Scrambling Encoding Unique word 128 symbols 128 symbols 64 symbols 128 symbols Permuting Preamble 192bits Signal process TX Interleaving Numb...

Страница 33: ...he network configuration and the correct frame number TDM Frame 8 64sec 10368 TDM symbols TDM Frame TDM Frame 8 7 6 5 4 3 2 1 1 14 640 Bulltin Board Packet Signalling Channel Descriptor Packet Message...

Страница 34: ...64 Symbols Convolutional Encoded Data 253 Symbols 316 Symbols 263 5ms 370 Symbols Figure 2 3 Signalling Channel Frame Format 2nd Generation Satellite 1200 symbols per second The signalling channel is...

Страница 35: ...Depend Descriptor Destination Descriptor 15 Assignment Request 8 7 6 5 4 3 2 1 Type P Check sum 1 15 C Logical Channel No Errored Packet No Errored Packet No Errored Packet No Errored Packet No Errore...

Страница 36: ...ns a mssage header destination address and message data The remaining packets contain message data only It takes 8 64 seconds to send 5 packets or one frame The message can be up to 32k bytes that is...

Страница 37: ...ssage Message RX signal TX signal TX signal Packet detection Convolutional Encoding Convolutional Encoding Scrambling Message Adding unique word Interleaving Permuting BPSK mod TX signal Scrambling Da...

Страница 38: ...t exclusive OR Figure 2 7 Encoding Unique Word The 252 symbols from the encorder is affixed with an unique word uw to be used for bit synchronization at the recorder The uw is 64 bits in length on the...

Страница 39: ...sequentially through to j 63 then i and j are related by i j 39 modulo 64 1st output j 0 i 0 3S modulo 64 0 2st output j 1 i 1 3S modulo 64 39 3st output j 2 i 2 3S modulo 64 14 Modulo 64 is the remai...

Страница 40: ...igital signal BPSK modulated signal BPSK modulator Phase change by 180 no phase change Phase change by 180 Phase change by 180 Figure 2 12 BPSK Modulation Frame synchronization Detects a unique word D...

Страница 41: ...d TX boards IC 112 consists of an antenna board ANT a diplexer DIPLEXER and a helical antenna GPS position signals can be received with an optional GPS receiver board GN 74 installed in IC 212 The GPS...

Страница 42: ...RX 120 5 94 5dBm RX IF 50kHz TX RX L BAND TX S DATA 1575 42MHz GPS TD RD 5 15V HPA ON ANT VOL CUR SYN UN LOCK AGC LVL SYN DATA CK LE HPA ON REF CONT TX ON 15 6MHz 12V TX ON HPA ON FAN on during TX CB...

Страница 43: ...529 KEY BOARD BTC 5100C PS 2 COM 1 COM 2 PRINTER KEYBOARD Power supply for LCD illumination FIL 16P0144 24V POWER BREAKER 2A CONTRAST BRIGHT VR 16P0145 IB 581 PRINTER PP 510 IC 212 DET 1 5V 5V 12V 24V...

Страница 44: ...mitting receiving signal processing circuits by CPU and input output interfaces EE PROM U11 Having FID RID REG 16P0149 Includes a switching regulator power supply circuit with a 24 V input which suppl...

Страница 45: ...it The isolation between transmitting and receiving signals in the diplexer is more than 40 dB The insertion loss of the diplexer is less than 1 0 dB ATT ANT element DIPLEXER RX 1530 1545MHz TX 1626 5...

Страница 46: ...3 6...

Страница 47: ...ified block diagram of RF CON board is shown below The RF CON board includes a 15 6 MHz reference oscillator a PLL synthesizer local oscillator for transmission and reception a BPSK transmitting modul...

Страница 48: ...5 1635 05MHz TX Lo 1626 5 1646 5MHz U18 U10 U15 U34 PLL IC UNLOCK 1 UNLOCK 2 UNLOCK 3 REF 15 6MHz REF 15 6MHz REF 15 6MHz SYN DATA CK LE3 SYN DATA CK LE2 SYN DATA CK LE1 REF 15 6MHz RX RF TX RF BPSK M...

Страница 49: ...or the signal to be H This 3 bit quantized signal is processed in CPU 1 and then passed to CPU2 In accordance with the content of the signal CPU2 delivers a message to the own ship and EGC message to...

Страница 50: ...S1 NMEA level converter SIO U33 U10 REF CONT RUN ERR HPA ON SYN RX MODE A D U71 ANT CUR ANT VOL AGC LEVEL TX LEVEL DTE 1 DTE 2 RCV BZ DMC 1 DMC 2 Watch Dog Timer Power ON Reset TEST LOCK CARRIER INTP0...

Страница 51: ...number control Synthesizer control Measurement of TX RX level RF block monitoring Alarm processing Releasing alarm sound Clock control Data interfacing with terminals DTE1 2 and its data processing Da...

Страница 52: ...bit Parity ODD Flow control line No using TX RX data line Signals between DCE and DTE No Command from DTE to DCE Information from DCE to DTE 1 Changing EGC channel Network information 2 Abort Current...

Страница 53: ...112 N type coaxial connector Antenna element Reflector Figure 4 1 Antenna Reflector Antenna element and reflector removed Diplexer Note Do not adjust any screws Diplexer cover Figure 4 2 Diplexer Chap...

Страница 54: ...4 2 Diplexer cover removed Cavity resonator Antenna base fixing screw Hex socket head bolt M6 x 30 4 pcs Figure 4 3 Cavity Resonator Antenna base cover Antenna fixing hole 4xM6 Figure 4 4 Antenna Base...

Страница 55: ...PTB20078 Q8 Driver MRF16006 Q9 PA MRF16030 U4 Circulator U2 AVR AN7812F Q1 LNA ATF10136 Q2 RX RF AT41486 Figure 4 5 Antenna Board 4 2 Communication Unit IC 212 BUZZER DMC 1 DMC 2 ANT 24V DC BREAKER D...

Страница 56: ...MHz 120 5 94 5dBm TX 1626 5 1646 5MHz 8 13dBm TX board 16P0157 RF CON board 16P0147 RX 2Lo PLL 90 1MHz REG board 16P0149 SUB PLL 890 915MHz MAIN PLL 736 5 731 5MHz U4 VCXO TCO 976 x 1 15 6MHz MOD U19...

Страница 57: ...orward and return IDs memorized LED CR2 3 4 5 6 U44 DEMOD ROM U58 DSP U66 DDS LED CR7 8 9 GPS board Optional S 1 JP 1 U39 CPU 1 ROM BT1 CR1 2 8L BACKUP BATT FAN Figure 4 9 CPU Board 4 3 Distress Alert...

Страница 58: ...CS acknowledges request for testing 4 The MES upon receiving acknowledgement from NCS goes into pending state 5 NCS selects a not busy LES to perform the test 6 The LES transmits a test message to the...

Страница 59: ...on disabled Do not press any distress button unless you are in distress 5 Press Esc to return to the default display 6 The screen displays Current State IDLE pending when the acknowledge signal is rec...

Страница 60: ...er than Std level 6dB Overall Result Pass Applicable tests pass 4 To escape press any key The default display appears The test result can be printed out by pressing P while pressing and holding down C...

Страница 61: ...r 8 14 sec off for 0 5 sec Lights when CPU1 error is detected Blinks when CPU1 operates correctly Lights during carrier signal acquisition and goes off when signal is aquired FFT Lights when signal is...

Страница 62: ...0Hz 4Vp p DC5V 6V Measurement of DEMOD output Oscilloscope Settings MODE X Y CONV VOLTS DIV 0 5 DIV TIM DIV X Y Connections CH1 TP4 or TP5 CH2 TP5 or TP4 GND TP1 or TP2 Lissajous Figures When C N in s...

Страница 63: ...a distress and an urgency including EGC message are received Note that the distress alert unit IC 303 does not release alarm sound when a distress and an urgency message are received CR 7 CR 8 CR 9 CR...

Страница 64: ...PROM Forward Return ID programmed BACK UP U40 SRM20100LLM70 SRAM U36 RTC62423 TIMER JP1 BACK UP ON OFF U40 U36 Figure 5 4 CPU Board Communication Unit S RAM U40 1 System Setup Menu F8 2 2 EGC Setup M...

Страница 65: ...GC 2 EGC Network ID 1 Data Report 2 Message Report F5 Reports 3 Data Network ID 1 Send Message Log 2 Receive Message Log 3 EGC Log F6 Logs 4 Log 5 Ocean Region F7 Options 6 2 PV Test Result 1 Distress...

Страница 66: ...Alt and Fn press F2 OK to quit system Yes No appears 2 Select Yes with the cursor and press Enter A FELCOM12 MS DOS prompt display appears 3 Insert the program floppy disk 4 Type B and press Enter The...

Страница 67: ...m 4 Type B and press Enter The prompt B appears 5 Type U P F 1 2 and press Enter The message About to update FELCOM12 CPU2 software Press Y to update the software to 165 0118 1xx If you wish to cancel...

Страница 68: ...OM TP1 TP3 TP2 U11 M6M80041P EE PROM Forward Return ID programmed BACK UP U40 SRM20100LLM70 SRAM U36 RTC62423 TIMER JP1 BACK UP ON OFF U40 U36 Figure 5 5 CPU Board Battery Type CR 1 2 8L F Code Number...

Страница 69: ...leased If an error is detected a long keep is released and CR3 or CR5 on the CPU board will light with the following message s The self test proceeds until the end of the sequence even if any error is...

Страница 70: ...o start the test The message Now Communication Unit testing appears in blinking reverse video during testing 5 When the test is completed the screen shows the test result Option Test Communication Uni...

Страница 71: ...ply Water Temperature Water Current Direction Speed Depth Current State TESTING SYNC LES 97 12 24 06 12 UTC TESTING RECEVING MESSAGE NCS IOR LOGIN LAT 35 00 00N DCE Ver 0x Oct 199x LON 135 00 00 000 O...

Страница 72: ...appears when figure is lower than 32 RX IF AGC Level Check the RX circuit in the Antenna Unit and the RF CONV Board or TX RX IF Board in the Communication Unit OK appears when figure is higher than 8...

Страница 73: ...from the DEMOD circuit If the signal level is below 31dB NG appears indicating that receiver circuit is defective ocean region selection is incorrect or blocking problem exists DEMOD CPU 1 U49 CPU 2...

Страница 74: ...n the voltage controller Q52 U10 through U54 and U57 on the SW REG board The voltage controller selects 29V for transmission resulting that the current on Q51 increases and Q56 goes on to turn on the...

Страница 75: ...J4 6 and J4 5 must be RX 0 91 to 1 01 Vdc TX 1 45 to 1 49 Vdc RX AGC Level NG CPU 2 U23 monitors the IF AGC level from the RF CON Board If the level is less than 80 the receiver circuit in the antenn...

Страница 76: ...is adjusted to 15 6 MHz 150Hz When the offset frequency is more than 150Hz REF Offset Freq NG appears indicating that CPU and or RF CON board may be defective DEMOD CPU 1 U49 CPU 2 U23 D A U12 RX sig...

Страница 77: ...lock signal and generates the NG indication UNLOCK 1 and 2 signals are also used to generate 5V TX ON signal which controls the TX circuit on the TX board When the PLL either of U10 or U15 unlocks tra...

Страница 78: ...cted Please contact FURUNO No ID number in EE PROM Not registered with Inmarsat Replace EE PROM with a new one having vessel s ID 7 TROUBLE Invalid MES ID This equipment is deffected Please contact FU...

Страница 79: ...Decode 1 Cut Del 2 Copy Alt C 3 Paste INS 4 Insert With Citation 5 Select All Alt A Search Word Alt F Forward 1 Seach Direction Back Search Start Yes or No Search Word Alt R Replace Word Forward Dire...

Страница 80: ...1 Other T30 Address Subject E Mail Attach File No LES ID CSDN Country Ocean Code PSDN Station ID X400 DNID Station ID No LES ID Destination Type SPEC Station ID LES ID ON Confirmation OFF Send Delay 0...

Страница 81: ...ON Status OFF Station Name Country Ocean Code TELEX Station ID Country Ocean Code Station ID FAX Modem Type T30 V21 Other T30 Address E Mail Subject No LES ID CSDN Country Ocean Code PSDN Station ID...

Страница 82: ...e Message Logs 3 EGC Logs F6 Logs 4 Logs YES 1 Login NO YES 2 Logout NO YES 3 Abort NO 4 Select NCS Auto West Atlantic East Atlantic Pacific 5 Ocean Region Indian Start Yes No Yes 1 PV Test No 2 PV Te...

Страница 83: ...ed Adrift Abandoning ship Further assistance required Nature Piracy or Armed attack Course 1 Distress Message Setup Speed Update Yes No System Date Time Auto AOR WEST AOR EAST POR Preferred NCS IOR IN...

Страница 84: ...ON Word Wrap OFF ON Line No OFF 2 Cha 4 Char Tab Width 8 Char Telex 69 Fixed Column Width ASCII 40 80 Block Cursor Type Underline Full Screen 3 Editor Setup Scroll Half Screen YY MM DD MMM DD YY Date...

Страница 85: ...F ON Meteo forecasts OFF ON Pilot service OFF ON DECCA messages OFF ON LORAN messages OFF ON OMEGA message OFF ON SATNAV massages OFF ON Other navaid msg OFF ON 5 EGC Setup QRU no message OFF Update Y...

Страница 86: ...her E Mail E Mail Address CSDN Country Code PSDN Station ID X400 DNID Station ID Destination Type SPEC Station ID 1 Station List Remarks Name ID 2 LES List Remarks 3 EGC channel List Update Yes No 4 N...

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