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Furuno DSC-60 Service Manual

Dsc/watch receiver
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DSC/WATCH RECEIVER
DSC-60
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Summary of Contents for Furuno DSC-60

  • Page 1 Back DSC/WATCH RECEIVER DSC-60 MODEL...
  • Page 2 Yo u r L o c a l A g e n t / D e a l e r 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 Te l e p h o n e : 0 7 9 8 - 6 5 - 2 1 1 1 Te l e f a x :...
  • Page 3 General 1. Cancelling a false Distress alert If distress signals have been transmitted inadvertently, it must be informed to the nearest coast station or an appropriate coast earth station or RCC by possible means that the signals has been erroneously transmitted and they are canceled.
  • Page 4 DSC-60. y is used in the DSC-60. y is used in the DSC-60. y is used in the DSC-60. memor memor . No memor...

  • Page 5: Table Of Contents

    Table of Contents Chapter 1 Overview 1. Overview ------------------------------------------------------------- 1-1 2. List of functions ---------------------------------------------------- 1-3 Chapter 2 Block Description 1. Overview of front panel ------------------------------------------ 2-1 2. Block configuration ------------------------------------------------ 2-3 3. Function and overview of each board ------------------------ 2-4 3.1 PANEL (05P0701) ----------------------------------------------------------------- 2-4 3.2 RX (05P0703) ----------------------------------------------------------------------- 2-5 3.3 AF (05P0704) ----------------------------------------------------------------------- 2-10...
  • Page 6 Table of Contents Chapter 4 System settings 1. Setup of MMSI and Method of Default Setting of EEROM 1.1 Setup of MMSI ---------------------------------------------------------------------- 4-1 1.2 Default setting of EEROM ------------------------------------------------------- 4-2 2. System setup 2.1 Outline of the setup --------------------------------------------------------------- 4-3 2.2 Alarm setup -------------------------------------------------------------------------- 4-5 2.3 Auto ack setup ---------------------------------------------------------------------- 4-7 2.4 Position setup ----------------------------------------------------------------------- 4-8...
  • Page 7 Table of Contents Chapter 7 Maintenance 1. Daily test 1.1 Procedures -------------------------------------------------------------------------- 7-1 1.2 If “GN” is displayed ---------------------------------------------------------------- 7-2 2. Countermeasures against Failures 2.1 Power can not be turned on ----------------------------------------------------- 7-7 2.2 There is no NMEA (Position data) input ------------------------------------- 7-8 2.3 Failures of LCD display ----------------------------------------------------------- 7-9 2.4 Key operation is locked up (No key operation) ----------------------------- 7-10 2.5 Low sensitivity of the receivers ------------------------------------------------ 7-11...

  • Page 8: Chapter 1 Overview

    MF/HF radiotelephone, and it cannot be watched during communication by radiotelephone and NBDP. The DSC-60 satisfies MSC.68(68) revised by RESOLUTION A. 806(19) : - Contents of received call displayed on two or more lines in 160 or more characters.
  • Page 9 Option Option RCV BZ Distributor Incomming (DB-120/500) Indicator (IC-303) DSC/WATCH Option IEC-61162 NBDP Option RECEIVER (NMEA) NBDP IEC-61162 (DSC-60) Nav device (DP-6) (NMEA) Term COM1 Option NBDP Terminal Printer Option Speaker (IB or P/C) Printer Option Handset Printer SEL 24V DC...

  • Page 10: List Of Functions

    2. List of functions 2. List of functions The DSC-60 complies with the regulations listed below. The main functions and specifications of the DSC-60 are shown in the table below. - IEC-61097-3/8/9 IEC-60945 3rd edition protected from weather (Former class B)

  • Page 11: Chapter 2 Block Description

    P O W E R : H I G H 16903.0 12657.0 8436.5 T U N E : N O T U N E 45 00.000N 135 00.000E 23:59 VOLUME VOLUME DSC/WATCH RECEIVER DSC-60 VOLUME TEST DISTRESS 2182 SCAN IntCom ALARM PRINT OVEN...
  • Page 12 3 seconds or more, distress alert is activated, Shifts selection cursor, selects item, changes value. and the button lights. It keeps lighting until Distress Volume may be adjusted on the DSC standby screen. Acknowledge Signal is received. Registers settings. DSC/WATCH RECEIVER DSC-60 VOLUME TEST DISTRESS 2182 IntCom...

  • Page 13: Block Configuration

    2. Block configuration 2. Block configuration - PANEL (05P0701): Composed of keys and display circuits (LCD, LED, and buzzer). - CONTROL/MODEM (05P0702): Composed of system control, I/O, and modem circuits. - RX (05P0703): Composed of receiver circuit and oscillator circuit, having DSC watch keeping receiver PCB and DSC general watch keeping receiver PCB (option) of the same specifica- tions.

  • Page 14: Function And Overview Of Each Board

    3. Function and overview of each board 3. Function and overview of each board 3.1 PANEL (05P0701) The PANEL Board is composed of the LCD unit, key switch, LED display of each switch, and buzzer. Audio alarm is generated by the buzzer, and is also output from external speaker. LCD unit provides 120 x 64 dots (3 x 5 dots per character, maximum 300 characters).

  • Page 15: Rx (05P0703)

    3. Function and overview of each board 3.2 RX (05P0703) The DSC watch keeping receiver PCB and DSC general watch keeping receiver PCB are the same PCB and have the same specifications. This board is composed of a receiver (RF amplification to detection circuit), synthesizer, and generator of self-test signal of this board.
  • Page 16 Present: Scanning receiving of DSC general frequency and receiving of DSC acknowledge back signal are performed by the MF/HF general watch keeping receiver board. DSC general DSC distress and safety SSB, NBDP, DSC frequencies frequencies communication DSC-60 MF/HF MF or MF/HF DSC Radiotelephone watch keeping receiver PCB MF/HF DSC general watch...
  • Page 17 3. Function and overview of each board CONTROL/MODEM (05P0702)
  • Page 18 3. Function and overview of each board SYN circuit Mixing at Q510 the frequency of the 36MHz reference oscillator and the output of “18MHz” dividing the frequency 1/2 by U505, 2nd local oscillator generates 54MHz. 3Lo is generated by the DDS, U506 and FL503 (455kHz, BPF) at the next stage. Phase data is set from the main CPU to the DDS, and the signal of “456.7kHz”...
  • Page 19 3. Function and overview of each board...

  • Page 20: Af (05P0704)

    3. Function and overview of each board 3.3 AF (05P0704) The AF Board consists of the ALC amplifier circuit for the signal from the handset microphone, and the AF amplifier circuit (2 channels volume control circuits) for the line input signal from the MF/HF radiotelephone and beep sound.

  • Page 21: Line Fil (05P0707)

    3. Function and overview of each board 3.4 LINE FIL (05P0707) The LINE FIL Board located between the power connector and the SW REG board is a EMC line filter. Protection against power short-circuiting is performed by a polymer switch. SW REG 1 24V+ 1 24V+...

  • Page 22: Line Fil (05P0706)

    3. Function and overview of each board 3.6 LINE FIL (05P0706) The LINE FIL Board is a EMC line filter in the line between external equipment connectors and the CONTROL/MODEM board. 3.7 CONTROL/MODEM (05P0702) Overview Overview Overview Overview Overview The CONTROL/MODEM board consists of the main control circuit and modem circuit. The main control circuit consists of the main CPU (MB91101:FR30), Flash ROM for program, EEPROM to store communication log and system setting, RAM, and SI/O and PI/O circuits.
  • Page 23 3. Function and overview of each board 2-13...
  • Page 24 S2 to either of RS-422, RS-232C, or C. Loop. The DMC port is used for connecting DMC, PC, and IC- 302. S2,3,4ON S5 ON/OFF T/R Data Protocol Port Type S6,7,8 System setting T/R:RS-232C RS-232C MIF or IEC MIF=FURUNO RT RS-422 selected in RS-422 IEC=IEC RT RS-422 system setting S5-2 C.Loop menu. T/R:RS-232C RS-232C DP-5 and DP-6...
  • Page 25 3. Function and overview of each board Control between DSC and RT (MF/HF Radiotelephone) Control between DSC and RT (MF/HF Radiotelephone) Control between DSC and RT (MF/HF Radiotelephone) Control between DSC and RT (MF/HF Radiotelephone) Control between DSC and RT (MF/HF Radiotelephone) This unit can remotely control the MF/HF radiotelephone.
  • Page 26 The STAND-BY signal controls the port of Distributor DB-500. This signal serves to connect the ports of the DSC-60 and MF/HF radiotelephone. The STAND-BY signal is indicated as the “HT” signal on the DB-500. TX KEY, RX MUTE, and STAND-BY signals are turned ON in sequence when the MF/ HF radiotelephone starts transmitting, and are turned OFF in sequence when it has stopped transmitting.
  • Page 27 DSC-60.That is, the radiotelephone cannot be turned off when the DSC-60 is on. The advantage of the connection is that a distress alert can be trans- mitted by the operation only on the DSC-60. This connection has more advantage especially when the DSC remote control function is used.
  • Page 28 3. Function and overview of each board MODEM circuit MODEM circuit MODEM circuit MODEM circuit MODEM circuit The DSC reception signal (AFSK signal) is input to the MODEM circuit from the DSC watch keeping receiver PCB and the DSC general watch keeping receiver PCB (MF/HF radiotelephone if the DSC general watch keeping receiver PCB is not present).
  • Page 29 3. Function and overview of each board Monitoring function Monitoring function Monitoring function Monitoring function Monitoring function This function automatically monitors whether the frequency to be used for DSC call or an Acknowledge transmission is already being used for other communication, and, if used, sends the DSC or Acknowl- edge after the communication finishes.

  • Page 30: Chapter 3 Location Of Parts

    Chapter 3 Location of Parts 1. Location of parts 1.1 Front Panel Distress Alert Button Cursor pad OVEN OVEN LED of reference oscillator of RX board ALARM Power SW and Buzzer - Receiving distress/emergency message: Flashing in red - Receiving safety message: Fashing in green - Receiving ship’s business/routine: Slow flashing in green 1.2 Rear Panel NBDP...

  • Page 31: Top View (Cover Removed)

    1. Location of Parts 1.3 Top View (Cover removed) SW REG (05P0705) AF (05P0704) LINE FIL (05P0707) PANEL LINE FIL (05P0706) CONTROL/MODEM (05P0702) 1.4 Bottom View (Cover removed) RX (05P0703) DSC Watch keeping receiver PCB PANEL RX (05P0703) DSC General Watch keeping receiver PCB...

  • Page 32: Pcbs

    2. PCBs 2. PCBs 2.1 LINE FIL(05P0706), LINE FIL(05P0707) LINE FIL (05P0706) LINE FIL (05P0707) D.ANT HANDSET 2.2 PANEL(05P0701) PANEL (05P0701)

  • Page 33: Control/Modem(05P0702)

    2. PCBs 2.3 CONTROL/MODEM(05P0702) (RS-232C/422) U6,7:SRAM S2:DMC S3:NBDP S4:RT U21:PIO/SIO U4:F.ROM(MAIN) U3:MAIN CPU U15:GATE ARRAY S1:NMI SW (DMC) U5:EEPROM R152 U13:DSP (C.Loop/RS-422) U12:CODEC U11:F.ROM(MODEM) S4 [RT] S3 [NBDP] S2 [DMC] S4-S2: Selection of TX/RX data communication system of S4:RT “232” in case of MIF format “422”...

  • Page 34: Rx(05P0703)

    2. PCBs 2.4 RX(05P0703) Note: Note: Note: Note: Note: T T T T T his boar his boar his boar d is common to DSC w d is common to DSC w d is common to DSC wa a a a a tc tc tc tc tch k h kee ee ee ee eeping r ping r ping r...

  • Page 35: Sw Reg(05P0705)

    2. PCBs 2.6 SW REG(05P0705) F1: Polymer SW TP1: 200kHz TP2: 24V(-) J1: 24V in R19: AVR (15V ADJ.) TP1 - TP2 wave form Q1 - GND wave form T=5 sec T=5 sec 18Vp-p 39Vp-p 2.7 PANEL(05P0701) Distress Alert Button Cursor Button CR2 (OVEN LED) CR35/36 (ALARM LED)

  • Page 36: Chapter 4 System Settings

    Chapter 4 System settings 1. Setup of MMSI and Method of Default Setting of EEROM 1.1 Setup of MMSI Refer to FURUNO Information. efer to FURUNO Information. efer to FURUNO Information. efer to FURUNO Information. efer to FURUNO Information.

  • Page 37: Default Setting Of Eerom

    1. Setup of MMSI and Method of Default Setting of EEROM 1.2 Default setting of EEROM Refer er er er ere to FUR e to FUR e to FUR e to FURUNO Inf UNO Inf UNO Infor or or or orma UNO Inf mation.

  • Page 38: System Setup

    2. System setup 2. System setup 2.1 Outline of the setup Pressing [#/SETUP] key on DSC stanby screen reveals “Setup menu” screen. WATCH KEEPING AUTO ACK **** Setup menu **** [#/SETUP] [#/SETUP] [#/SETUP] [#/SETUP] [#/SETUP] DISTRESS 2187.5 4207.5 6312.0 ALARM SCAN FREQ 16804.5 12577.0...
  • Page 39 2. System setup Necessary setting items in “Setup menu” are as follows: The default settings are shown in a screened cell of each setting item. The recommended “settings” listed in the Table are presumed to be the standard settings. Set them according to user’s requests.

  • Page 40: Alarm Setup

    2. System setup(ALARM) 2.2 Alarm setup “Alarm setup” sets ON/OFF of internal and external incoming alarm in signal reception and alarm regarding the update of position data. Pressing [#/SETUP] key reveals “Setup menu” screen. Select “ALARM” and press [ENT] key. Then, the following “Alarm setup”...
  • Page 41 2. System setup(ALARM) 3. EXT ALARM 3. EXT ALARM 3. EXT ALARM 3. EXT ALARM 3. EXT ALARM This item sets the type of DSC reception message to sound the alarm to the incoming indicator IC-303. EXT ALARM settings are: - DISTRS/URG (Default setting) - ROUTINE - ALL...

  • Page 42: Auto Ack Setup

    2. System setup(AUOT ACK) 2.3 Auto ack setup This item sets AUTO ACK response. Pressing [#/SETUP] key reveals “Setup menu” screen. Select AUTO ACK, and press [ENT] key. Then, the following “Auto ack setup” screen appears. * * Auto ack setup * * ABLE COMPLY TYPE : ABLE...

  • Page 43: Position Setup

    2. System setup(POSITION) 2.4 Position setup This item sets ON/OFF of position data acquisition. Pressing [#/SETUP] key reveals “Setup menu” screen. Select POSITION, and press [ENT] key. Then, the following “Position setup” screen appears. * * Position setup * * AUTO INPUT TYPE : AUTO...

  • Page 44: Print Out Setup

    2. System setup(PRINT OUT) 2.5 Print out setup This item sets whether DSC transmitting/receiving messages and daily test results are printed out or not. Pressing [#/SETUP] key reveals “Setup menu” screen. Select “PRINT OUT”, and press [ENT] key. Then, the following “Print setup” screen appears. * * Print setup * * XMTD CALL : MANUAL...

  • Page 45: User Channel Entry

    2. System setup(User channel entry) 2.6 User channel entry This item registers the communication frequencies for radiotelephone, NBDP, and DSC. The regis- tered frequencies can be used to specify frequencies for telephone and NBDP communication in DSC message, and, of course, for DSC communication. Pressing [#/SETUP] key reveals “Setup menu”...

  • Page 46: Scan Freq. Setup

    2. System setup(Scan freq setup) 2.7 Scan freq. setup This item sets the receiving scan frequencies for DSC distress watch keeping, DISTRESS and DSC general watch keeping, RUTINE. Pressing [#/SETUP] key reveals “Setup menu” screen. Select SCAN FREQ, and press [ENT] key. Then, the following “Scan freq.
  • Page 47 2. System setup(Scan freq setup) 1. Setting RUTINE scan frequency 1. Selecting F1 to F6 reveals the following band submenu display. 12MHz “OTHER” stores a frequency “0” band that 2MHz 16MHz F1-6 are registered in USER CH and T/R 458.5 4MHz 18MHz kHz.

  • Page 48: Volume Setup

    2. System setup(Volume setup) 2.8 Volume setup This item sets volumes of alarm sound, key click sound, and handset sound. Pressing [#/SETUP] key reveals “Setup menu” screen. Select VOLUME, and press [ENT] key. Then, the following “Volume setup” screen appears. * * Volume setup * * KEY CLICK : ON...

  • Page 49: System Setup

    2. System setup(System setup) 2.9 System setup This protected setting or to open the menu requires password entry. Pressing [#/SETUP] key reveals “Setup menu” screen. Select SYSTEM, and press [ENT] key. Then, the following “System setup” screen appears. * * System setup * * MMSI : 123456789 FIXED MF/HF...
  • Page 50 This item sets the protocol to control the radiotelephone. The setting is made at MIF, IEC, or OFF. If FS-75/1562 or FS-5000 series is connected, set this item at the default setting “MIF”. - MIF: Furuno radiotelephone interface - IEC: IEC-61162-1 - OFF: Radio remote control is turned OFF.
  • Page 51 6. REMOTE STATION (Default setting: ON) This setting item determines whether DSC-60 is operated as remote station or not. This item is set at ON or OFF. If it is set at OFF, the remote function can not be switched by [1/RT/2182] key.

  • Page 52: Setting Dip Switches

    Table and Figures below. Port S2,3,4ON Type S5 ON/OFF T/R Data S6,7,8 Protocol System setting T/R:RS-232C RS-232C MIF or IEC MIF=FURUNO RT RS-422 selected in RS-422 IEC=IEC RT RS-422 system S5-2 C.Loop setting menu. T/R:RS-232C RS-232C...

  • Page 53: Setting For The Connection With Fs-75/1562/5000 And Dp-6

    2. System setup(Setting DIP Swithes) 3.2 Setting for the connection with FS-75/1562/5000 and DP-6 TX/RX control data exchange between Furuno radio units are made normally by MIF protocol through the RS-232C connections with factory-default setting. When the interconnection cable is lengthened , select C.

  • Page 54: Setting For The Connection With Navigational Aids

    “AUTO” or “MANUAL” is selectable for POSITION setting in “System setup” menu. If AUTO is selected, the DSC-60 accepts the sentences of GGA, RMC, RMA, GLL, and ZDA. The data that DSC uses are Position data and Time data (automatically combined with transmitting messages).

  • Page 55: Setting For The Connection With Dmc, Ic-302 And Pc

    2. System setup(Setting DIP Swithes) 3.4 Setting for the connection with DMC, IC-302 and PC DMC-5, IC-302, and PC can be connected to DMC port. Set the DIP switches on CONTROL/ MODEM board as follows: *Default settings: - S5, S6, S7, S8 : All OFF 1.

  • Page 56: Setting The Receiver Board

    2. System setup(Setting DIP Swithes) 3.5 Setting the receiver board A FAX-5+2.6m whip active antenna is usually used to receive DSC distress signal and DSC general signal. Set J3 on the RX board to ACTIVE to apply voltage to the antenna. 455kHz ACTIVE Ref.OSC...

  • Page 57: Setup Menu List

    4.Setup menu list 4. Setup menu list SET UP MENU 1 MENU 2 MENU 3 MENU 4 MENU 5 MENU 6 RCVD CALL OLD POSITION ALARM POSITION OLDER 0.5H DSTRS/URG ROUTINE EXT ALARM ABLE NO REASUN BUSY COMPLY TYPE UNABLE EQUIP DISABLED MODE NOT USABLE AUTO ACK...
  • Page 58 4.Setup menu list SET UP MENU 1 MENU 2 MENU 3 MENU 4 MENU 5 MENU 6 GROUP ID 0xxxxxxxx Telephone COM. TYPE NBDP-FEC NO INFO FREQUENCY COM. FRQ CHANNEL User CH or ITU CH L/L DATA POSITION GROUP CALL INTL 2,4,6,8,12,16, LOCAL 1...
  • Page 59 4.Setup menu list SET UP MENU 1 MENU 2 MENU 3 MENU 4 MENU 5 MENU 6 INTL OFF, 2, 4, 6, 8, 12, 16, LOCAL 1 ROUTINE 18, 22, 25MHz LOCAL 2 User CH OTHER FIXED SCAN FREQ DISTRESS FIXED CH:max256ch(Band:0-29 USER CH...
  • Page 60 4.Setup menu list SET UP MENU 1 MENU 2 MENU 3 MENU 4 MENU 5 MENU 6 TONE MARK ON/OFF SPACE TX KEY RX MUTE ON/OFF STANDBY NBDP REMOTE OK, Model name or NG NMEA External alarm test in EXT ALARM progress (IC-302 DISTRESS External alert test in...
  • Page 61 4.Setup menu list SET UP MENU 1 MENU 2 MENU 3 MENU 4 MENU 5 MENU 6 IMMS XXXXXXXXX FIXED MF/HF WATCH RCVR LINE OUT LEVEL 0dBm ADJ:-12 --- +12dBm TX-KEY TIMING AUTO ADJ:0.1,0.5,1,2,3,4,5,10,15sec PROTECTION (NOTE: RT PORT SYSTEM ENTRY PASS WORD:xxxxxxx) REMOTE STATION...

  • Page 62: Chapter 5 Test Function

    Chapter 5 Test function 1. Overview The unit has two test functions: DAILY TEST that uses the TEST key and the other is done through the setup menu. Using TEST key Using TEST key Using TEST key Using TEST key Using TEST key Pressing [3/TEST/DEF] key on DSC stanby screen or Radiotelephone setting screen automatically starts the daily test and displays the test results.

  • Page 63: Daily Test

    2. Daily Test 2. Daily Test 2.1 Procedures 1. Press [3/TEST/DEF] key on DSC stanby screen or Radiotelephone setting screen. WATCH KEEPING AUTO ACK M O D E : T E L E P H O N E DISTRESS C H : 1 2 0 3 4 2187.5 4207.5 6312.0...

  • Page 64: Details About The Daily Test

    2. Daily Test 2.2 Details about the daily test 1. Finishing the test After the test has finished, the distress signal receiving LED flashes and the external speaker and buzzer sounds for 2 seconds, and the test results are displayed. 2.
  • Page 65 MAIN CPU CONTROL/MODEM PCB CAID DP-6 DSC-60 #IDDP6 7. REMOTE DP This test is the communication test with the same MF/HF transceiver as above REMOTE RT test. MIF command CAID (CALL ID) is sent to the connected units and their model names in the response char- acters are displayed.

  • Page 66: Test Through The Setup Menu

    3. Test through the Setup Menu 3. Test through the Setup Menu Pressing [#/SETUP] key on DSC stanby screen reveals “Setup menu” screen. Select TEST, and press [ENT] key. Then, the following “Test function” screen appears. * * Setup menu * * * * Test function * * [ENT] ALARM...
  • Page 67 Select one of the tones and turn ON/OFF by pressing [ENT] key. To bring the MF/HF transceiver into transmitting status, turn ON the handset PTT at DSC-60 side (when REMOTE STATION is set to ON), or turn ON TX KEY in BK test.
  • Page 68 For example, when FS-1562 is connected, xxxx is FS1562). The command outputs three times, and then, if no response occurs, “NG” is displayed. If IC-302 is connected to the DMC terminal, DMC CHECK becomes “NG”. In NMEA check, DSC-60 is connected to the NMEA terminal.
  • Page 69 5. EXT ALERT The performance test of distress alert unit IC-302 is executed. By pressing [ENT] key, DSC-60 is brought into waiting status for a distress alert from IC-302, and the screen displays “Waiting for external alert sw.” message. Pressing [DISTRESS] button on IC-302 sends an alert signal to IC-302 from the DSC-60, and a mes- sage “External alert test in progress”...

  • Page 70: Factory Tests (Require Test Instrument)

    3. Test through the Setup Menu 3.2 Factory tests ( required test instrument) To execute these tests, cancel “PROTECTION”. Select test items AF, CONT, PANEL, and PCB, and press [ENT] key. Then, the tests are automatically and successively executed and the item under test is highlighted. When the test of one item has finished, its test result is judged and “OK”...
  • Page 71 3. Test through the Setup Menu BEEP BEEP BEEP BEEP BEEP BEEP sound is tuned ON for 2 seconds, and then turned OFF. BEEP sound inputs from J5-#9 of AF board. LINE LINE LINE LINE LINE The signal to switch LINE input of SSB or DSC is tested. For this test, “SSB”...
  • Page 72 3. Test through the Setup Menu 2. CONT PCB CONTROL/MODEM board (05P0702) is tested. Pressing [ENT] key starts the test. The tests listed on the two screen proceed automatically. After finishing these tests, check the test results switching the two screens with the up/ down arrow keys. * * CONT PCB test * * * * CONT PCB test * * : --...
  • Page 73 3. Test through the Setup Menu MODEM The loopback test with DSC signal is executed. Connect LINE IN to LINE OUT at RT port connector. If the test result is good, “OK” is displayed. If not, “NG” is displayed. RT PORT LINE OUT #10-12 MAIN CPU...
  • Page 74 3. Test through the Setup Menu T T T T T est items on the second scr est items on the second scr est items on the second scr est items on the second scr est items on the second screen * * CONT PCB test * * : -- LINE...
  • Page 75 3. Test through the Setup Menu E ALERT E ALERT E ALERT E ALERT E ALERT EXTERNAL ALERT tests the performance of the disress alert unit, IC-302. Pressing [DISTRESS] button on IC-302 generates a distress alert signal. The LED should flash for 3 seconds, and then continuously light up for 2 seconds.
  • Page 76 3. Test through the Setup Menu 4. RX PCB This is the test of RX board (05P0703). To facilitate the adjustment and checking of PLL synthesizer and receiving sensitivity of RX board, the setup frequencies are registered. Pressing [ENT] key reveals the following screen. **** RX PCB test * * * SYN ADJ CH : 01 (01 - 16)
  • Page 77 3. Test through the Setup Menu 3.3 Performance tests for type approval The test items are briefly described below. However, do not actually execute these tests. (To execute these tests, “PROTECTION” must be canceled.) ***** T/A test ***** ECC ERROR CALL : OFF REPETITION CALL DIST SCAN...

  • Page 78: Chapter 6 Measurement

    REMOTE STATION menu setting in “System setup” menu. Of course, DSC tone signals (1700 Hz±85 Hz) are generated by the DSC-60 and sent to the radiotelephone. - When REMOTE STATION is set to ON, press the PTT switch on the DSC handset.
  • Page 79 Specification: (1700-85 Hz)+0.5 Hz 8. After measuring the MARK tone frequency, press [ENT]key to turn the signal “OFF”. 9. When the measurements have finished, turn off power for DSC-60. * SPACE tone specification:(1700 Hz+85 Hz)+0.5 Hz * MARK tone specification:(1700 Hz-85 Hz)+0.5 Hz...

  • Page 80: Frequency And Power Measurement

    2.2 Frequency and power measurement The units are connected as below to measure the frequnecy and power of the output signal. HANDSET Dummy 50 ohms(Power meter) DSC-60 FS-xxxx Pick-up Freq. counter Setting freq. and F1B(J2B) mode Measurement of output power from the main unit...
  • Page 81 Set frequency counter and power meter. Set RT at the frequency to be measured and at F1B (J2B/TLX) Output TONE from DSC-60. SPACE TONE:(1700Hz+85Hz) 0.5Hz [SETUP] -> "TEST" -> Cancel PROTECTION. MARK TONE :(1700Hz-85Hz) 0.5Hz -> 'TONE' -> SPACE or MARK ->> ON Transmission.
  • Page 82 TA TEST PROTECTION : OFF 4. Transmit power by turn ON the handset PTT switch of DSC-60, and measure the frequency and power. 5. To measure other frequencies, turn OFF the handset PTT switch and change the frequency of MF/HF radiotelephone.
  • Page 83 SPACE TONE:(1700Hz+85Hz) 0.5Hz [SETUP] -> "TEST" -> Cancel PROTECTION. MARK TONE :(1700Hz-85Hz) 0.5Hz -> 'TONE' -> SPACE or MARK ->> ON Switch BK ON thru DSC-60 test menu. TX ON "TEST -> 'BK' -> ON SPACE TONE:(F+85Hz) 10Hz Measure Frequency and power.
  • Page 84 6. Measure the frequency and power. 7. To measure other frequencies, turn OFF the BK signal of No. 5 and change the frequency of MF/HF radiotelephone. Repeat steps 5 and 6. 8. After the completion of the measurements, turn off power for DSC-60.

  • Page 85: Daily Test

    Pressing [3/TEST/DEF] key with DSC standby screen or Radiotelephone setting screen automatically starts the daily test, and the test results are displayed. Main CPU, MODEM, and RX board can be checked, and the connection between MF/HF radiotelephone and NBDP made by Furuno Electric can be checked by MIF commands.

  • Page 86: If "Gn" Is Displayed

    - Check the connections between the connected units. - Check system settings of the connected units. - Check the system settings and DIP switch settings of DSC-60. - Check whether the problems, if any, are about the main unit or connected units, by executing...
  • Page 87 - NG --> Exchange CONTROL/MODEM board. - OK --> Setup the system again. Procedures to clear EEROM Refer to Furuno Information. “Setup” menu - AUTO ACK : ON - POSITION : ON - SCAN FREQ: Set this item at the selected frequencies.
  • Page 88 1.DAILY TEST 2. NG of “RCVR-1” and “RCVR-2” DSC watch keeping receiver board, RCVR-1 and DSC general watch keeping receiver board, RCVR-2 are successively tested. The test is executed controlling these receivers from Main CPU, as shown in the figure below. The test signal is 18 MHz carrier modulated by the mark and space signals. The demodu- lated signal from the receiver, 1700+85Hz, inputs to MODEM via LINE OUT line.
  • Page 89 If “NG” appears, check the following: - Is the power for the radiotelephone turned on? For the test, turn “ON” the power. - Check the wiring between RT port of DSC-60 and the radiotelephone. TD line is connected to RD line.
  • Page 90 - Once turn off power for NBDP and carry out the test. - Check the wiring between NBDP port of DSC-60 and NBDP. TD line is conncected to RD line. - Check the DIP switch settings of DSC-60. Refer to Page 4-17.

  • Page 91: Countermeasures Against Failures

    2. Countermeasures against Various Failures 2. Countermeasures against Failures 2.1 Power can not be turned on. Refer to Page 2-11. - Check the polarity of the power supply. - Check to be sure that the power supply voltage is the rated value: 21V to 31V. (The over- voltage protection circuit works at 35V, and the power can not be turned on.) Power can not be turned on.

  • Page 92: There Is No Nmea (Position Data) Input

    2. Countermeasures against Various Failures 2.2 There is no NMEA (Position data) input The warnings about position data are: 1) If position data is not updated, the message “Warning:Update position” appears. 2) If NMEA data is interrupted, the message “EPFS error”. To receive position data, set POSITION in “Setup menu”...

  • Page 93: Failures Of Lcd Display

    2. Countermeasures against Various Failures 2.3 Failures of LCD display If CONTRAST is adjusted at its minimum, nothing is displayed on LCD. If nothing appears or anything is missing on LCD display, turn off power and then, turn on again first. LCD display failure LCD recovers from the failure after power is turned off and then on?

  • Page 94: Key Operation Is Locked Up (No Key Operation)

    2. Countermeasures against Various Failures 2.4 Key operation is locked up (No key operation) When key operation is not possible, once turn off power, and then, turn on again. Keys are locked up. Lock up recovers from the failure after power is turned off and then on? If failure often occurs, 5V power supply to...

  • Page 95: Low Sensitivity Of The Receivers

    2. Countermeasures against Various Failures 2.5 Low sensitivity of the receivers 1. Press [3/TEST/DEF] key, and execute the daily test. If the test results of RX is “NG”, refer to Page 5-3. 2. Check the jumper wire setting, J3, on RX board. When connecting FAX-5, an active antenna, DC 12 V must be supplied the preamplifier inside the antenna unit.

  • Page 96: Faults Caused By Setup Failure

    DSC Standby Screen cannot switch to Radiotelephone Setting Screen by pressing [1/RT/2182] key and the handset of DSC-60 cannot be used., if REMOTE STATION in “System setup” menu is set at “OFF”. Refer to Page 4-16. 2. The scan frequency of DSC watch keeping receiver is fixed to 2187.5 kHz.
  • Page 97 In the case of DSC-60: In the case of DSC-60: DSC-60 receives ACK RQ signals with the registered scan frequencies and transmits ACK BQ signals at the frequency paired with the received signal frequency. Be sure to register the scan frequencies and perform the listening on those frequencies.

  • Page 98: How To Update System Program

    The PC is connected to the DSC-60 as below. Connection between DSC-60 and PC/IB-581 The connection is made with the following interconnection cable. The connector to the DSC-60 is a 25- pin D-SUB male, and to the IBN-581 or PC a 9-pin D-SUB female.
  • Page 99 3. How to update system program Refer er er er erence) ence) ence) ence) ence) The file size differs depending on the program revision level. The sizes listed here are reference only. File name Size DSC60 689,056 LOAD 15,304 MODEM 29,129 PROG UPDSC...

  • Page 100: Updating Main Program With Ib-581

    8. Wait for about 5 minutes. 9. The DOS prompt appears after the message “Finish version up.” 10. Turn off the DSC-60, disconnect the IB-581 and turn on the DSC-60 again. 11. Press [3/TEST/DEF] to perform the selftest and confirm the program has been updated.

  • Page 101: Updating Modem Program With Ib-581

    8. Wait for about 5 minutes. 9. The DOS prompt appears after the message “Finish version up.” 10. Turn off the DSC-60, disconnect the IB-581 and turn on the DSC-60 again. 11. Press [3/TEST/DEF] to perform the selftest and confirm the program has been updated.

  • Page 102: Updating Main Program With Pc

    7. Wait for about 5 minutes until the xxx percent reaches to 100. 8. The DOS prompt appears after the message “Finish version up.” 9. Turn off the DSC-60, disconnect the IB-581 and turn on the DSC-60 again. 10. Press [3/TEST/DEF] to perform the selftest and confirm the program has been updated.

  • Page 103: Updating Modem Program With Pc

    7. Wait for about 5 minutes until the xxx percent reaches to 100. 8. The DOS prompt appears after the message “Finish version up.” 9. Turn off the DSC-60, disconnect the IB-581 and turn on the DSC-60 again. 10. Press [3/TEST/DEF] to perform the selftest and confirm the program has been updated.

  • Page 104: Error Message

    4.Error message 4. Error message The error messages are tabulated below. A MIF command error includes the command type which could not implemented and the equipment type which the command was sent to. For example, EM error:RT means that the DSC sent EM (Emission Mode) command to the radiotelephone (RT), but the RT could not receive the command.

  • Page 105: Specifications

    SPECIFICATIONS 1. 1. 1. 1. 1. DSC TERMINAL DSC TERMINAL DSC TERMINAL DSC TERMINAL DSC TERMINAL (1) Line Out: 0 dBm (adjustable between –10 dBm and +10 dBm), 600 ohms, balanced (2) Line In: -10 to +10 dBm, 600 ohms, balanced (3) Frequency Shift: Mark;...
  • Page 106 SPECIFICATIONS 4. 4. 4. 4. 4. MF/HF SSB MF/HF SSB TRANSCEIVER REMO TRANSCEIVER REMO TE ST TE STA A A A A TION TE ST TION TION MF/HF SSB MF/HF SSB MF/HF SSB TRANSCEIVER REMO TRANSCEIVER REMO TRANSCEIVER REMOTE ST TE ST TION TION...

  • Page 107: Dsc Frequencies Table

    DSC Frequencies Table TX (kHz) RX (kHz) Remarks File name 2187.5 2187.5 4207.5 4207.5 Distress and 6312.0 6312.0 Safety 8414.5 8414.5 Frequencies 12577.0 12577.0 16804.5 16804.5 458.5 455.5 INTL-0.4M 2189.5 2177.0 INTL-2M 4208.0 4219.5 INTL-4M 6312.5 6331.0 INTL-6M International 8415.0 8436.5 INTL-8M Frequencies...

  • Page 111: Contents Of Drawings

    Contents of Drawings Name Type Dwg. No. Page Remarks C5628-C01 Interconnection Diagram C5628-C02 DB-500 C5628-C03 DB-120 DSC-60 C5628-B01 Block Diagram DSC-60 C5628-K01 DSC/Watch Receiver 05P0701 C5628-K03 PANEL PCB 05P0702 (1/8) C5628-K04 05P0702 (2/8) C5628-K05 05P0702 (3/8) C5628-K06 05P0702 (4/8) C5628-K07...

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