Navico MX420 Installation & Service Manual
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Navico MX420 Installation & Service Manual

Mx420 series navigation system
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  • Page 1 MX420 Navigation System Installation & Service Manual...
  • Page 2 MX420 Navigation System Installation and Service Manual Models Covered: MX420/2 MX420/8 MX420/BR MX420/BRIM MX420/AIS BASIC (MKD) MX420/AIS DGPS Prepared by MX Marine A Division of NAVICO, Inc. 23868 Hawthorne Boulevard, Suite 201 Torrance, California 90505-5908...
  • Page 3 P/N 3508 102 70060 July, 2007 MX Marine MX Marine reserves the right to make changes to its products and specifications without notice. © Copyright July, 2007...
  • Page 4 MX421 antenna unit. This is followed with the mechanical and electrical wiring diagrams and installation notes to guide you in the installation of your MX420 system. Should you require additional technical support, please first contact the dealer where you purchased your MX420.

  • Page 6: Table Of Contents

    Diagram ..................... 34 Figure 4.9 Cable (A) Wiring Configuration ........35 Figure 4.10 Cable (B) Wiring Configuration (Only on MX420/8) ... 36 Figure 4.11 Cable (C) Wiring Configuration (Only on MX420/8) ..37 Figure 4.12 MX420/2 Rear Panel Connector ........38 Figure 4.13 MX420/8 Rear Panel Connectors ........
  • Page 7 Turning Power On and Off ............55 EQUIPMENT INTERFACING ............56 Introduction ................56 External Man Over Board & Event (MX420/8 Only) .... 56 Speed Over Ground Pulse Output ........57 External Alarm Output ............57 Port 2: RS- 422 / RS- 232 Serial Interface ......58 MX420 PC Interface ..............

  • Page 8: Section 1 - List Of Components

    List of Components MX 420 Installation and Service Manual SECTION 1 LIST OF COMPONENTS...
  • Page 9 MX 420 Installation and Service Manual List of Components...
  • Page 10 15 meters 725637 Option 20 meters 3508 102 70170 Option 40 meters 3508 102 70180 Option 90 meters 3508 102 70190 Option MX421 Installation Manual 723594 *GPS only model. For MX420/2B model substitute with MX421B-10 DGPS Antenna (see table below)
  • Page 11 15 meters 725637 Option 20 meters 3508 102 70170 Option 40 meters 3508 102 70180 Option 90 meters 3508 102 70190 Option MX421 Installation Manual 723594 GPS only antenna model. For MX420/8B model substitute with MX421B-10 DGPS antenna (See table below).
  • Page 12 3508 102 70170 Option 40 meters 3508 102 70180 Option 90 meters 3508 102 70190 Option MX421 Installation Manual 723594 *GPS antenna for MX420/8 GPS only installation use P/N 9525 200 80100. For MX420/8B DGPS installation use P/N 9525 200 80110.
  • Page 13 MX 420 Installation and Service Manual List of Components Table 1.4 MX420/BRIM (Integrity Monitor) Model Item Component Qty. Part Number Remarks (lbs.) MX420/8 Control and Display 9525 200 78010 System consisting of: MX420, 8 Port Control and Display 3508 102 70210...
  • Page 14 List of Components MX 420 Installation and Service Manual Table 1.5 MX420/AIS Model Item # Description Remarks MK420/AIS Control and Display System 9525 200 80000 Standard Consisting of: MK420/AIS 8-port Control and Display 3508 102 70240 Unit Mounting Bracket 3508 101 38472...
  • Page 15 MX 420 Installation and Service Manual List of Components...

  • Page 16: Section 2 - Technical Specifications

    Technical Specifications MX420 Installation and Service Manual SECTION 2 TECHNICAL SPECIFICATIONS...
  • Page 17 MX420 Installation and Service Manual Technical Specifications...

  • Page 18: Technical Specifications

    Adjacent Channel Rejection: 40dB (500 Hz) Bit rate: 25, 50,100, or 200 (auto- sync) RTCM Messages Supported: Type 1, 2, 3, 5, 7, 9,16 MX420 Control and Display Unit (CDU) Display: Part name: LMG7410PLFC (Hitachi) Dots: 240 by 128 Duty:...
  • Page 19 MX420 Installation and Service Manual Technical Specifications Back enclosure: Metal: Cast aluminum Connectors: Connector A: Panel plug: 18-Pin Male (Conxall) Connector B (MX 420/8 only): Panel socket: 18-Pin Female (Conxall) Connector C (MX 420/8 only): Panel socket: 18-Pin Female (Conxall)
  • Page 20 Technical Specifications MX420 Installation and Service Manual Cables Cable A: 2 m (6 ft) Cable B: 2 m (6 ft) Canle C: 2 m (6 ft) MX421 Antenna: Height: 89 mm (3.27 in) Diameter: 182 mm (7.28in) Cable Length: Supplied: 15 m.
  • Page 21 MX420 Installation and Service Manual Technical Specifications Environmental MX420 CDU: -15 to +55 °C. IEC 60, clause 4.5.2 and Operating Temperature: 4.5.4 (draft 3 rd edition) -30 to +70 °C. IEC 945, clause 4.5.2 and Storage Temperature: 4.5.4 (draft 3 rd edition) Humidity: IEC 945, clause 4.5.3 (draft 3 rd edition)
  • Page 22 Technical Specifications MX420 Installation and Service Manual Antenna: MK 421: 12 VDC, 200 mA MK 421B: 12 VDC, 280 mA MX420 CDU Inputs and Outputs: The input and output circuits of the serial interfaces meet the requirements of: • IEC 61162-1 including the requirements of ITU-T V.11.
  • Page 23 MX420 Installation and Service Manual Technical Specifications MOB/ Event input Insulation: Maximum ±50 volt, input relative to power supply lines Impedance: 3.5 kOhm input relative to Reference GND Pull-up: 15 kOhm to internal 12 volt Threshold: Positive going maximum 2.3 volt, input relative to Reference GND Negative going minimum 0.6 volt, input relative to...

  • Page 24: Section 3 - Mechanical And Installation Drawings

    MX420 Installation and Service Manual SECTION 3 MECHANICAL AND INSTALLATION DRAWINGS...
  • Page 25 MX420 Installation and Service Manual...

  • Page 26: Front View

    MX420 Installation and Service Manual 271 mm 266 mm W PT PLOT TIDE MX420_DIM.cdr RUBBER SEAL ALL DIMENSIONS IN MM. Figure 3.1 MX420 Display Console Dimensions (Front View)
  • Page 27 MX420 Installation and Service Manual 53mm 100 mm Cable Dressing Space 28.5mm 13.25mm Mounting Bracket 50mm 81.5mm 24.5mm 53mm 28.5mm 251mm 10mm 10mm Rear Panel 6137-01B.400 Figure 3.2 MX420 Display Console Dimensions (Top and Side View)
  • Page 28 MX420 Installation and Service Manual 298 mm RT E NA V WP T P L OT PLOT T I DE TIDE A U X P O S G P S G PS AI S CF G C F G 6290-11A.400...
  • Page 29 MX420 Installation and Service Manual MX 420 Flush Mount Hole Size Requirements 251mm Maximu REAR PANEL 9 mm Minimum Free Space 100 mm Minimum Bend Radius 50 mm Figure 3.4 Standard Flush Mount and Cable Clearance...
  • Page 30 MX420 Installation and Service Manual MX 420 Flush Mount Frame Hole Size Requirements 271mm FRONT PANEL Figure 3.5 Optional Flush Mount Frame Installation...
  • Page 31 MX420 Installation and Service Manual 182 mm 8-Pin Connector 1 in.- 14 TPI 1 IN. DIA. MOUNTING POLE (USER SUPPLIED) Figure 3.6 MX421/B Antenna Dimensions and Mount Specifications...

  • Page 32: Section 4 - Electrical Installation Drawings

    MX420 Installation and Service Manual SECTION 4 ELECTRICAL INSTALLATION DRAWINGS...
  • Page 33 MX420 Installation and Service Manual...
  • Page 34 MX420 Installation and Service Manual...
  • Page 35 MX420 Installation and Service Manual...

  • Page 36: Figure 4.3 Mx420/8 System Configuration

    MX420 Installation and Service Manual MX 421 Terminal Block (3x) MX 421B (User Supplied) NMEA1 MX 420/8 NMEA2 (RS-232/RS-422) Cable A MX 422 Profess ional DGPS Navigator NMEA3/GPS EXT. ALARM 12-32 VDC DIGITAL In(1) DIGITAL In(2) *NMEA4 (TX only) Cable B...

  • Page 37: Figure 4.4 Mx420/8 Wiring Diagram

    MX420 Installation and Service Manual MX421/B Antenna Connector (A) Terminal Block (18-Pin ) Female (User Supplied) 2 Amp. Shield (GND) Fuse [Pwr In +12~32 Vdc] RED/WHT [+12 V Out to Mx421] [NMEA1 In (A)] BRN/WHT [NMEA1 In (B)] PORT1 (RS-422)
  • Page 38 MX420 Installation and Service Manual...
  • Page 39 MX420 Installation and Service Manual...
  • Page 40 MX420 Installation and Service Manual...
  • Page 41 MX420 Installation and Service Manual...

  • Page 42: Figure 4.9 Cable (A) Wiring Configuration

    MX420 Installation and Service Manual 2.0 meters Cable A 18-Pin Female Connector 18-Pin (Female) Connector Cable A [PWR In +12~32 Vdc] RED/WHT [+12 V Out to Ant.] [NMEA1 In (A)] Brown BRN/WHT [NMEA1 In (B)] PRPL [NMEA1 Out (A)] Purple PRPL/WHT [NMEA1 Out (B)] ORG [NMEA3 / GPS In (A) from Ant.]...

  • Page 43: Figure 4.10 Cable (B) Wiring Configuration (Only On Mx420/8)

    BLU [NMEA6 Out (A)] Blue BLU/WHT [NMEA6 Out (B)] PRPL/WHT (Not Used) Conn. B Pin Assignments Purple (Front View) PRPL (Not Used) GRY (Optional 1 PPS +) Gray GRY/BLK (Optional 1PPS -) Figure 4.10 Cable (B) Wiring Configuration (Only on MX420/8)

  • Page 44: Figure 4.11 Cable (C) Wiring Configuration (Only On Mx420/8)

    BLU [NMEA7 Out (A)] Blue BLU/WHT [NMEA7 Out (B)] PRPL [NMEA8 Out (A)] Purple Conn. C Pin Assignments PRPL/WHT [NMEA8 Out (B)] (Front View) GRY (not used) Gray GRY/BLK (not connected) Figure 4.11 Cable (C) Wiring Configuration (Only on MX420/8)

  • Page 45: Figure 4.12 Mx420/2 Rear Panel Connector

    MX420 Installation and Service Manual Figure 4.12 MX420/2 Rear Panel Connector Figure 4.13 MX420/8 Rear Panel Connectors...

  • Page 46: Figure 4.14 Mx421(8-Pin) Gps Antenna Wiring Diagram

    +12 VDC Black (GND) Cable A (Pin 1 Shield -GND) Note: 7* Connect to Cable B (Brown/White) for MX420/8 or MX420/AIS models 8* Connect to Cable B (Brown) For MX420/8 or MX420/AIS models. Figure 4.14 MX421(8-Pin) GPS Antenna Wiring Diagram...
  • Page 47 Cable A (Pin 1 Shield-GND) GND. * RTCM connection to MX421-10 (GPS only) Antenna model ** Not available in MX420/2 or MK12 CDU models *** Not connected in MX420/2 or MK12 models Figure 4.15 MX421-10 (10-Pin) GPS Only Antenna Wiring Diagram...
  • Page 48 Cable A (Pin 1 Shield -GND) Black GND. *Not connected in MX421 (GPS only) Antenna model **Not connected in MX420/2 or Mk12 CDU models ***Pins 9 &10 available only on MX421-10 antenna model Figure 4.16 MX421B-10 (10-Pin) DGPS Antenna Wiring Diagram...
  • Page 49 MX420 Installation and Service Manual...

  • Page 50: Block Diagram

    (Mx421) (Mx421) (Mx423) (Speed (Ext. Range) ARPA) Laptop) Log) GPS) RTCM** * Auxiliary GPS receiver connection using NMEA 0183 interface. ** RTCM - differential correction from a beacon receiver. Figure 4.17 MX420/AIS CDU & MX423 (SAAB) Transponder System Block Diagram...

  • Page 51: Wiring Diagram

    BLU/WHT [NMEA7 Out (B)] High Speed Equipment PRPL [NMEA8 Out (A)] GRN/WHT Default port 7 PRPL/WHT [NMEA8 Out (B)] I/O Port setting = ECDIS [Not Used] BLU/WHT (RS-422) GRY/BLK [Not Connected] Figure 4.18 MX420/AIS CDU & MX423 (SAAB) Transponder System Wiring Diagram...

  • Page 52: Figure 4.19 Mx420/Ais/Mkd Cdu & Mx531 (Atlas) Transponder Block Diagram

    MX531 AIS TRANSPONDER MX420/AIS MX420/MKD S3 (GLL,DTM,VTG) GPS OUT (GLL) Non-ATLAS EXT. ECDIS/ ARPA ATLAS SPEED SPD LOG PILOT LONG GYRO EXT. ECDIS/ (PULSES) RNG. & ROT ALARM ARPA (NMEA) Figure 4.19 MX420/AIS/MKD CDU & MX531 (ATLAS) Transponder Block Diagram...

  • Page 53: Figure 4.20 - Mx420/Ais/Mkd Cdu & Mx531 (Atlas) Transponder System Wiring Diagram

    [NMEA7 Out (A)] BLU/WHT [NMEA7 Out (B)] N.C. PRPL [NMEA8 Out (A)] Alarm Unit PRPL/WHT [NMEA8 Out (B)] N.O. [Not Used] GRY/BLK [Not Connected] GRN/WHT ECDIS (Non-ATLAS) BLU/WHT Figure 4.20 - MX420/AIS/MKD CDU & MX531 (ATLAS) Transponder System Wiring Diagram...

  • Page 54: Figure 4.21 Mx420/Ais/Mkd Cdu & Mx535 (Nauticast) Tran Sponder Block Diagram

    MX ANTENNA VHF ANT GPS ANT. JB-50 (Optional) J- BOX MX535 AIS TRANSPONDER GYRO SPEED PILOT PLUG Figure 4.21 MX420/AIS/MKD CDU & MX535 (NAUTICAST) Transponder Block Diagram...

  • Page 55: Figure 4.22 - Mx420/Ais/Mkd Cdu & Mx535 (Nauticast) Tran Sponder System Wiring Diagram

    GRN/WHT [NMEA7 In (B)] [NMEA7 Out (A)] BLU/WHT [NMEA7 Out (B)] PRPL [NMEA8 Out (A)] PRPL/WHT [NMEA8 Out (B)] [Not Used] GRY/BLK [Not Connected] ECDIS Listener (Non-MX535) BLU/WHT Figure 4.22 - MX420/AIS/MKD CDU & MX535 (NAUTICAST) Transponder System Wiring Diagram...

  • Page 56: Figure 4.23 - Mx420/Ais/Mkd Cdu & Mx535 (Nauticast) Tran Sponder System Wiring Diagram With Jb-50 Junction Box

    Note: Port 5 (In/Out) is hard-wired to Ch4 (ECDIS) and Port 8 (Out) is hard-wired to Ch2 (Sensor 2). External wiring for these ports is not necessary when using the JB-50 with the MX420 and the MX535 AIS Transponder. Figure 4.23 - MX420/AIS/MKD CDU & MX535 (NAUTICAST) Transponder System Wiring Diagram with JB-50 Junction Box...

  • Page 57: Installation Notes

    MX 420 Installation and Service Manual SECTION 5 INSTALLATION NOTES...
  • Page 58 MX 420 Installation and Service Manual...

  • Page 59: General

    33, 34 and 35 of this installation manual. External Power The MX420 was designed to operate on 12 ~ 32 VDC supply. It can tolerate voltages no lower than 10 volts and no higher than 35 volts. It draws about 1 Ampere at 12 VDC...

  • Page 60: Navigator Grounding

    The antenna model is indicated on the serial number tag on the underside of the antenna. The drive voltage to the antenna is 12 VDC +10%, and normally provided by the MX420. However, power to the MX421 antenna may be taken from the main battery supply.

  • Page 61: Antenna Cable Options

    Color DGPS DGPS BLK/ Negative Ground SHIELD +10.5 ~ 32 VDC MX Marine Proprietary Message (LPM) In (-) MX Marine Proprietary Message (LPM) In (+) GPS Out (-) GPS Out (+) Beacon Status Beacon Status RTCM In (-) Out (-)

  • Page 62: Gimbal Mounting

    Each of these techniques are described below. All the hardware necessary to com- plete the Flush and Gimbal mount is provided with the MX420. You will need rear panel access to complete these types of mounts. The Frame mount is an option for applica- tions where front panel removal is not desired or rear panel access is not available.

  • Page 63: Equipment Interfacing

    2 seconds, this causes your present position and time to be stored as a waypoint in the waypoint bank. A message indicating which waypoint number is used will be displayed on the MX420 screen for up to 5 seconds in this scenario.

  • Page 64: Speed Over Ground Pulse Output

    To setup the MX420 software, select the CFG1/Log Pulses screen. This screen controls the output port (Pulse) of the speed over ground log output from the MX420 at a user determined pulse rate of 100 to 500 pulses per nautical mile (200 is the pre- selected value).

  • Page 65: Port 2: Rs- 422 / Rs- 232 Serial Interface

    MX 420 Installation and Service Manual The external alarm is derived from the “ALARMout” port on cable (A) pin 18 (Black/ White - ALARMout). The software is setup in each of the appropriate CFG1 (Alarms) menu. The relay coil supply voltage must be connected to an independent battery backed-up alarm supply.

  • Page 66: Mx420 Pc Interface

    2 - PWR IN (+) BLACK 3 - PWR RET (-) +12 VDC NEG. NMEA Interface The MX420 meets the NMEA 0183 version 2.1 electrical standard for marine interface communications with other marine equipment, such Radars, Plotters, Autopilots, Fish Finders, etc.

  • Page 67: Nmea Interface To Other Equipment

    4 volt input threshold and may be the cause of interface problems. If this is the case, try using the MX420’s RS-232 interface. This may more likely solve the problem. Otherwise third party conversion boxes may be necessary.

  • Page 68: Mx420 Nmea 0183 Sentences

    MX 420 Installation and Service Manual MX420 NMEA 0183 Sentences The NMEA Standard provides for asynchronous transmission, with a single Talker and multiple Listeners per line. Typical use includes information transfer from electronic positioning and navigational devices to autopilots, plotters, terminals, printers, etc.

  • Page 69: Nmea Output Sentences

    MX 420 Installation and Service Manual Example: Field #: 2 3 4 5 6 7 $GPXTE,A,A,3.42,L,N*hh<CR><LF> Sentence terminator Optional checksum (HEX) In Ver. 1.5 & 2.0, required in Ver 2.1 Checksum delimiter Units of measure, N=nautical miles Direction to steer, L=Left, R=Right Magnitude of error (nautical miles) Not used, Always = A Status: A=Data valid, V=Data invalid...

  • Page 70: Input Nmea 0183 Sentences

    Table 5.1 NMEA 0183 Output Sentences Input NMEA 0183 Sentences The MX420 recognizes version 1.5, 2.0,2.1 and 2.3 NMEA input records. The MX420 can utilize the following input sentence formats: Depth: DBK, DBS, DBT, and/ or DPT Gyro: HCC, HDM, HDT, RMA (only when GPS is not available), RMC (only when GPS is...

  • Page 71: Viewing Input Data

    Viewing Input Data You can view data being sent to the MX420 by other equipment or loop a MX420 output port back to an unused input port to verify if it is outputting data to other equipment.

  • Page 72: Dual Control (Remote) Interface

    MX420s in a Master / Slave configuration where a common database is shared between two MX420 control heads. This configuration also allows you to use one antenna connected to the Master unit, for both MX420s. The remaining data ports, the MOB /Event input port, and the alarm output ports are still available on each unit for individual use on each MX420.
  • Page 73 This function also takes place each time the units are powered up. Table 5. Master / Slave Common Data Base The items detailed in Table 6 are independently controlled at the individual MX420 control heads. Table 6. Independently Controlled Functions...

  • Page 74: Mx420 Dual Control With Integrity Monitor

    The Integrity Monitor (IM) feature (once the license is enabled) allows the two dual-control MX420/8 units to constantly compare each of the two GPS solutions and, if configured to do so, give an alarm and/or switch to the use of the “best” GPS solution.

  • Page 75: Other Mx420/Ais Interface

    MX420/AIS DGPS Navigation System • The MX420/AIS Basic or MKD system is primarily a control and display unit (CDU) for the MX423 AIS transponder. GPS Position data is supplied by the GPS engine in the transponder. The MX420/AIS Basic does not perform navigation calcula- tions.

  • Page 76: Mx420 Ais Basic Configuration

    MX420 AIS Basic configuration MX423 AIS Transponder Interface The NMEA 5 port of the MX420/AIS (or MKD) connects to the bidirectional PSP port of the MX423 AIS transponder (see the schematic diagram on figure 4.18 on page 41). Communication speed between the MX420 and the transponder is preset at 57.6 Kbps.
  • Page 77 Wrong NMEA version Wrong output rate, or format Wrong electrical standard Too many data sentences turned on (throughput overflow) More than one NMEA talker on the circuit Faulty port The MX420 requires the user to enable NMEA Return the unit for repair...

  • Page 78: Memory Backup Battery

    Marine electronics dealers or radio supply stores will typically stock the replacement battery, Type CR2032, 3V Lithium battery. The battery is mounted in a socket located on the MX420 processor board. MX Marine recommends this service to be done by a qualified service technician.

  • Page 79: Memory Clear Procedure

    3. Connect the DB9 connector to COMM1 (RS232) serial port of the PC. 4. Connect the 18-pin connector (or Cable A) to the MX420/MK12. 5. Turn the MX420/MK12 on to verify if power connection is correct. Turn it off again.
  • Page 80 MX Marine A division of NAVICO, Inc. 23868 Hawthorne Blvd., Suite 201 Torrance, CA 90505 +1 310 791 8213 Telephone +1 310 791 6108 Fax Internet: www.mx-marine.com...

This manual is also suitable for:

Mx420/2Mx420/8Mx420/brMx420/brimMx420/ais dgps

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