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Furuno SC-50/110 manual

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Table of contents for the manual

  • Page 1

    SA TELLITE COMP ASS SC-50/110[...]

  • Page 2

    The paper used in this manual is elemental chlorine free. FURUNO Authorized Distributor/Dealer FURUNO Authorized Distributor/Dealer 9-52 Ashihara-cho, 9-52 Ashihara-cho, Nishinomi y a 662-8580, JAPAN Nishinomi y a 662-8580, JAPAN Tele p hone : Tele p hone : 0798-65-2111 0798-65-2111 Fa x Fa x 0798-65-4200 0798-65-4200 : : FIRST EDITION : FIRST EDIT[...]

  • Page 3

    Contents 1. Over view ...................................................................................... 1 2. Maintenanc e Menu ....................................................................... 2 1 ) MONITOR display ..............................................................................2 2) COMPASS display .........................[...]

  • Page 4

    [...]

  • Page 5

    1 1. Overview The satellite compass, SC-50/110 calcula tes the heading by using the carrier signal of the GPS satellite signals. The system also calculates the heading with three rate sensors. When the satellite signal is blocked, the system output s the heading data based on the rate sensor signal for a maximum of 5 minutes. The system always comp[...]

  • Page 6

    2 2. Maintenance Menu The system provides TEC menu or Maintenance m enu for servicing. To show TEC menu, press and hold down MENU and ENT keys simultaneously until the menu appears af ter three beeps. It takes about 8 seconds to hear the third beep. Release the finger from MENU key, and then ENT key. If you release the finge r from ENT key first, M[...]

  • Page 7

    3 Shows difference between GPS and rate sensor. Shows an error. 1: error, 0: no error 1 normally Factory use Factory use 2) COMPASS display MASK-EL is used to set a minimum elevation angle of the satellite. The satellite of which elevation angle is lower than MASK-EL is not used for heading calculation. Default: 5 degrees. DO NOT change GPS DELAY, [...]

  • Page 8

    4 4) R-CALIB display R-CALIB (Rate sensor Calibration) is used to enter the calibration value of the rate sensor at factory. It is not necessary to change this value when the rate sensor is replaced with new one. However, the value on top of the original sens or is written on top of the replacement sensor for future service. Fig.6 R-CALIB S 1 : + 0[...]

  • Page 9

    5 Number of consecutive errors (For example, an error message appears with three consecutive ROL errors.) 5) RATE ERR display This menu sets the level to trigger the heading error alarms; NO HEADING OUTPUT and RATE ERROR. The system compares the output of the angular rate sensor with one obtained by the GPS signal. In the following example, an e rr[...]

  • Page 10

    6 7) ALARM display This menu sets the ALARM port signal. When ALARM MODE is set to “STOP,” the alarm signal is not sent out after acknowledgeme nt. When selected “Continue,” the system continues to output the alarm signal. 8) ANALOG display This menu is used to test and compensate th e motion sensor output signal. Set the desired angle on t[...]

  • Page 11

    7 The display consists of four indications; a ci rcular graph which shows direction where the tracking error rate is the highest, a bar gr aph which shows tracking error rates in 12 directions, mutlipath indexes, and elapsed time. Circular graph: Shows the relation of 12 directions to the bow. The direction of the highest tracking error rate and it[...]

  • Page 12

    8 10) MESSAGE display Error messages appear in the display. If RATE E RROR! appears, first check Installation Setup menu for correct setting: “Mounting” method and “Direction.” Fig.14 Error Message display 11) REC MONI menu The REC MONI display, Figure 15 shows whether the system works normally or not. The GPS receiver having the least trac[...]

  • Page 13

    9 3. Replacement of Battery The processor unit has a battery which back s up the RAM contents when the power is removed. When the voltage of the battery dr ops to 2.5 V, the message “BATTERY!” appears on the screen. To check the message, pre ss [MENU] key and choose “MESSAGE.” The lifetime of the batteries is 3 to 5 years. CAUTION! Take car[...]

  • Page 14

    10 5. Program Upgrade The three programs are used for the SC-50/110. Two programs are used in the processor unit and one program is in the display unit. The program num bers are tabulated below. Note that the program number of SC-50 is the sam e as SC-110, but they are different. The program for SC-50 cannot be overwritten by the one for SC-110 in [...]

  • Page 15

    11 2) CPU board (Display unit) To upgrade the program on the CPU board; 1. Connect the serial port of the PC to J15 on MAIN board in the processor unit. 2. Turn on the PC. Do not as yet turn on the SC-50/110. 3. Click the SCUP.bat file in the SC-50/110 program file. 4. Turn on the SC-50/110 after the message “TARGET POWER ON” on the PC screen. [...]

  • Page 16

    12 6. Maintenance 6.1 Adjustment 1) PWR board Switching regulator frequency is adjusted on PWR board, 20P8181 as below. Test Point GND Rating Adjuster TP2 TP1 120.0 kHz ± 10 kHz VR79 TP5 TP3 120.0 kHz ± 10 kHz VR80 2) MAIN board Vcc-c supply voltage to Rate sensor is adjusted by VR96 on MAIN board, 20P8178. Test Point GND Rating Adjuster #1 of J2[...]

  • Page 17

    13 7. Location of Parts Rate Sensor (Default: Pitch) GPS Receivers (1, 2, 3 from Top) Rate Sensor (Default: Roll) Rate Sensor (Default: Yaw) Main Board (20P8178) PWR Board (20P8181) Fi g . 17 Processor Unit with cover remove d Fi g .18 PWR Board, 20P8181 TP2 TP1 F1, 3A T P 3 T P 4 V R 8 0 V R 7 9 ( not shown ) TP4[...]

  • Page 18

    14 Fi g .19 MAIN Board, 20P8178 BT1 (CR2450-F2ST2L) Roll (above) Pitch Log/Alarm Beacon Ext D a t a o u t 1 t o 5 D a t a I n ( from ri g ht, IEC or AD-10 Headin g data ) J15 for system update J20 J19 J18 TP1 R96 No short bar (for R&D) Data out 6 (AD-10) J3 CR3 (CPU), Blinking JP1[...]

  • Page 19

    15 J2 to J7 Appendix 1 Protection of ICs in Data Output Circuit Appendix 1 describes how to prevent ICs in the data output circuit temporarily. Refer to Appendix 2 for permanent remedy. Symptom U1, U2, and U3 in the heading output circuit are damaged. Cause Ground potential difference - The cable sh ield, or a signal return path between the circuit[...]

  • Page 20

    16 1. Fabrication of Signal Cable The signal cable is fabricated as below. DO NOT hold back the cable shield over the armor. The installation manual will be revised. 80 80 40 70 70 40 Twist and cut . Armor FV1.25-M3 Solder Grounding wire Remove coat for clamping. FV1.25-M3 Armor Grounding wire Fig. 2 Solder Twist and cut . Vinyl tape Remove coat fo[...]

  • Page 21

    17 2. Grounding Cable Shield Ground the cable shield or gr ounding wire to the chassis by using the screw fixing the MAIN board, 20P8178 to the chassis. Fig. 3 Connection of grounding wire[...]

  • Page 22

    18 3. Adding Zener Diodes Zener diodes are added to the data output circuit as below. 1. Fabricate the diode as shown in the figure below. T y p e : R D 9 . 1 E B 3 - T 4 C/N: 000-138-700 Fig. 4 Fabrication of zener diode 2. Remove the coat and solder the diode. See Fig. 5. 3. Do the same for other pins and other ports. 2 mm 4 mm 4 mm 4 mm 4 mm Rem[...]

  • Page 23

    19 Reference) The following waveforms show the effe ctiveness of the modification. With the SC-50/110 processor unit being not m odified, a spike noise is observed at the output terminal on SC-50/110 when the interconnected unit is turned on. (Fig. 6) After modification, t he noise is not observed. (Fig. 7) Before modification Condition: SC-50 swit[...]

  • Page 24

    20 Appendix 2 Modification on Data Output Circuit Appendix 1 describes the tentative remedy to prevent U1, U2, and U3 in the heading output circuit from being damaged. Following modification (Table below) is the permanent remedy. The connector is changed from 4 pins to 5 pins for the connection of cable shield. When installing the unit having t he [...]

  • Page 25

    APPROVED CHECKED DRAWN DWG.NO. MODEL UNIT SC-501/1101 演算部 PROCESSOR UNIT SC-50/110 S. kubota T. Yoshida 0 6 S ep. 2005 0 6 S ep. 2005 0 6 S ep. 2005 H.K uwamura C 7251-E01-A ﾌﾞﾗｲﾝﾄﾞﾌｲﾙﾑ B LIND F ILM 20-024-2021-2 ( 100-310-742) ｽﾎﾟﾝｼﾞ SPONGE CRN L 90X W50 X T5 ( 000-151-402) ｹｲｺｸﾊﾘﾏｰｸ WARNIN[...]

  • Page 26

    APPROVED CHECKED DRAWN DWG.NO. MODEL UNIT SC-303-T SC-50 S.kubota T.Yoshida 06 Sep.2005 06 Sep.2005 06 Sep.2005 H.Kuwamura GPS ｸｳﾁﾕｳｾﾝﾌﾞ RADOME ANTENNA UNIT C 7251-E02-A F U N O ﾄﾞ ｰ ﾑ ｳ ｴ ｸ ﾐﾋ ﾝ RADOME COVER ASSEM B LY SC-303 ( 004-378-120) ﾄ ﾞ ｰﾑｼﾀ ｸ ﾐﾋﾝ RADOME LOWER ASSEM B LY SC-303 ( 00[...]

  • Page 27

    D C B A 6 5 4 3 2 1 演算部 表示部 DIS PLAY U NI T PROC ESSOR UN IT CABLE W/ YEL-LIN E 黄線入ケ ーブル 赤線入ケ ーブル CABLE W/ RED-LIN E ANTE NNA UNIT 空中線部 SC-60 3 ANT 1 ANT 2 ANT 3 SC-5 01 SC -5 02 カラーマ ーク無 NO COLOR MARK SC-3 03 注記 ＊３）工 場にて 取付済み ＊６） 方位 出力が 停止 ?[...]

  • Page 28

    S - 2[...]

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    S - 3[...]

  • Page 30

    S - 4[...]