Navico MX420 Installation & Service Manual Download

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MX420 Installation and Service Manual

NAV

PLOT

POS

TIDE

GPS

CFG

RTE

AUX

AIS

WPT

RUBBER SEAL

266 mm

271 mm

ALL DIMENSIONS IN MM.

MX420_DIM.cdr

Figure 3.1 MX420 Display Console Dimensions

(Front View)

Summary of Contents for MX420

Page 1: ...Installation Service Manual MX420 Navigation System ...

Page 2: ...llation 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 USA ...

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: ... please first contact the dealer where you purchased your MX420 Since your dealer sells and installs the MX420 and many other types of equipment they are often your best resource for technical questions You can also contact MX Marine for technical assistance International MX Marine US A Division of NAVICO Inc 23868 Hawthorne Blvd Suite 201 Torrance California 90505 USA 01 310 791 8213 Telephone In...

Page 5: ......

Page 6: ...tion Only on MX420 8 37 Figure 4 12 MX420 2 Rear Panel Connector 38 Figure 4 13 MX420 8 Rear Panel Connectors 38 Figure 4 14 MX421 8 Pin GPS Antenna Wiring Diagram 39 Figure 4 15 MX421 10 10 Pin GPS Only Antenna Wiring Diagram40 Figure 4 16 MX421B 10 10 Pin DGPS Antenna Wiring Diagram 41 Figure 4 17 MX420 AIS CDU MX423 SAAB Transponder System Block Diagram 43 Figure 4 18 MX420 AIS CDU MX423 SAAB T...

Page 7: ...und Pulse Output 57 External Alarm Output 57 Port 2 RS 422 RS 232 Serial Interface 58 MX420 PC Interface 59 NMEA Interface 59 NMEA Interface to other Equipment 60 MX420 NMEA 0183 Sentences 61 Data Format 61 NMEA Output Sentences 62 Input NMEA 0183 Sentences 63 Viewing Input Data 64 Dual Control Remote Interface 65 MX420 Dual Control with Integrity Monitor 67 Other MX420 AIS Interface 68 MX420 AIS ...

Page 8: ...1 MX 420 Installation and Service Manual List of Components SECTION 1 LIST OF COMPONENTS ...

Page 9: ...MX 420 Installation and Service Manual List of Components 2 ...

Page 10: ...f 1 9525 200 78000 1 1 MX420 2 Port Control and Display Unit 1 3508 102 70200 2 6 1 2 Mounting Bracket 1 3508 101 38472 1 3 Mounting Kit 1 3508 102 03140 1 4 Power NMEA Cable Cable A 1 3508 102 70010 1 5 MX420 Operator s Manual 1 3508 102 70040 1 6 MX420 Operator s Quick Guide 1 3508 102 70050 1 7 MX420 Installation Service Manual 1 3508 102 70060 1 8 Tide Table Manual 1 3508 101 89490 2 0 MX421 S...

Page 11: ...1 6 Cable C NMEA Cable 1 3508 102 70030 1 7 MX420 Operator s Manual 1 3508 102 70040 1 8 MX420 Operator s Quick Guide 1 3508 102 70050 1 9 MX420 Installation Service Manual 1 3508 102 70060 1 10 Tide Table Manual 1 3508 101 89490 2 0 MX421 Smart GPS antenna System Consisting of 1 Not Included with Item 1 0 2 1 MX421 10 Smart GPS Antenna 1 9525 200 80100 1 1 2 2 Antenna Cable Options 15 meters 20 m...

Page 12: ...Manual 2 3508 102 70040 1 8 MX420 Operator s Quick Guide 2 3508 102 70050 1 9 MX420 Installation Service Manual 2 3508 102 70060 1 10 Tide Table Manual 2 3508 101 89490 2 0 MX420 2 Control and Display Unit 1 9525 200 78000 3 0 Smart GPS Antenna System Consisting of 1 Not Included with Item 1 0 3 1 MX421 10 Smart GPS Antenna Or MX421B 10 Smart DGPS Antenna 1 1 9525 200 80100 9525 200 80110 1 1 1 9 ...

Page 13: ...02 70010 1 5 Cable B NMEA Cable 2 3508 102 70020 1 6 Cable C NMEA Cable 2 3508 102 70030 1 7 MX420 Operator s Manual 2 3508 102 70040 1 8 MX420 Operator s Quick Guide 2 3508 102 70050 1 9 MX420 Installation Service Manual 2 3508 102 70060 1 10 Tide Table Manual 2 3508 101 89490 2 0 MX421 Smart DGPS Antenna System Consisting of 2 Not Included with Item 1 0 2 1 MX421B Smart GPS Antenna 2 9525 200 80...

Page 14: ...0 1 5 Cable B NMEA Cable 3508 102 70020 1 6 Cable C NMEA Cable 3508 102 70030 1 7 MX420 Operator s Manual 3508 102 70410 1 8 MX420 Installation Manual 3508 102 70420 1 9 MX420 Quick Reference Guide 3508 102 70060 1 10 Tide Table Manual 3508 101 89490 1 11 AIS Reference Card 2 0 MX421B 10 Smart DGPS Antenna System Consisting of Option 2 1 MX421B Smart DGPS Antenna 9525 200 80110 Option 2 2 15 Meter...

Page 15: ...MX 420 Installation and Service Manual List of Components 8 ...

Page 16: ...MX420 Installation and Service Manual Technical Specifications 9 SECTION 2 TECHNICALSPECIFICATIONS ...

Page 17: ...MX420 Installation and Service Manual Technical Specifications 10 ...

Page 18: ...X421B Model Type 2 channels Automatic or Manual tuning Frequency 283 5 325 KHz in 500 Hz steps Dynamic Range 100dB 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 1 128 LCD Film type black and white negative type Bottom polarizer is tr...

Page 19: ... Shielded Wire 24 x 0 02 mm Connector 18 Pin Male Conxall Cable C Type 9 Pair Shielded Wire 24 x 0 20 mm Connector 18 Pins Male Conxall Antenna Type 8 wire 24 AWG shielded Connectors Antenna end 8 Pin Female Conxall Navigator end None Antennas MX421 GPS Smart Antenna Unit Freq GPS L1 1575 MHz MX421B DGPS Smart Antenna Unit Freq GPS L1 1575 MHz Beacon 283 5 325 KHz Physical MX420 CDU Height 145 mm ...

Page 20: ...Service Manual Technical Specifications 13 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 Standard length Options 20 or 40 meters ...

Page 21: ... 945 1994 IEC 80 106 CDV 1995 Draft IEC945 FTZ 171 R 32 Aug 1985 FTZ 171 R 45 Jan 1989 FTZ 171 R 46 Dec 1988 Compass Safe Distance 1 5 m Recommended MX421 Antenna Operating Temperature 25 to 70 C Humidity MIL STD 810E Method 507 3 Procedure I 100 R H for 30 days at 24 C Power MX420 CDU Type DC DC switch mode with galvanic separa tion Consumption Less than 11W display back light on Typi cal 8W at 2...

Page 22: ...2 0 2 1 2 2 2 3 NMEA talker all outputs Levels Maximum 6 volt minimum 2 volt A out relative to B out Current Minimum 15mA Protection 1 volt to 6 volt output relative to shield 50 volt output relative to external power lines NMEA listeners all inputs Insulation Opto coupler Maximum 50 volt input relative to shield or power supply lines Impedance Minimum 500 Ohms A in relative to B in Threshold Maxi...

Page 23: ...n 25 volt input relative to shield 50 volt input relative to external power lines Frequency Triggered with 50 mS bounce control Pulse width Minimum 100 mS Cable B Pins Pin 6 normally open to Pin 1 GND Alarm output Signal levels When not in Alarm state or after acknowledged alarm Normally Open When in Alarm On state Closed to Ref GND Cable A Pins Pin 18 N O contact to GND Antenna voltage output Cab...

Page 24: ...17 MX420 Installation and Service Manual SECTION 3 MECHANICALAND INSTALLATION DRAWINGS ...

Page 25: ...18 MX420 Installation and Service Manual ...

Page 26: ... Installation and Service Manual NAV PLOT POS E TIDE GPS CFG RTE AUX AIS C W PT RUBBER SEAL 139 mm 145 mm 266 mm 271 mm ALL DIMENSIONS IN MM MX420_DIM cdr Figure 3 1 MX420 Display Console Dimensions Front View ...

Page 27: ...e Manual 53mm 81 5mm 28 5mm 118 5mm 13 25mm 13 25mm 147 5mm Mounting Bracket 50mm 100 mm Cable Dressing Space 53mm 6137 01B 400 7mm 10mm 251mm 10mm Rear Panel 28 5mm 24 5mm Figure 3 2 MX420 Display Console Dimensions Top and Side View ...

Page 28: ...21 MX420 Installation and Service Manual NAV PL OT POS E TI DE GP S CF G RTE A U X AI S C WPT NAV PLOT POS E TIDE GPS CFG RTE AUX AIS C WPT 147 5 mm 298 mm Figure 3 3 Gimbal Mount 6290 11A 400 ...

Page 29: ...Installation and Service Manual 251mm 119mm MX 420 Flush Mount Hole Size Requirements Minimum Free Space 100 mm Maximu 9 mm REAR PANEL MinimumBend Radius 50 mm Figure 3 4 Standard Flush Mount and Cable Clearance ...

Page 30: ...23 MX420 Installation and Service Manual 119mm MX 420 Flush Mount Frame Hole Size Requirements 271mm FRONT PANEL Figure 3 5 Optional Flush Mount Frame Installation ...

Page 31: ...24 MX420 Installation and Service Manual 89 mm 182 mm 1 in 14 TPI 8 Pin Connector 20 mm 1 IN DIA MOUNTING POLE USER SUPPLIED Figure 3 6 MX421 B Antenna Dimensions and Mount Specifications ...

Page 32: ...25 MX420 Installation and Service Manual SECTION 4 ELECTRICALINSTALLATION DRAWINGS ...

Page 33: ...26 MX420 Installation and Service Manual ...

Page 34: ...i onal DGPS Navigat or MX 422 Prof essi onal DGPS Navigat or MX 420 2 MX 421 or MX 421B Terminal Block User Supplied Cable A NMEA1 NMEA2 RS 232 RS 422 NMEA3 Ant I O Switched 12 VDC EXT ALARM 12 32 VDC Power Input Figure 4 1 MX420 2 Basic System Configuration ...

Page 35: ...MX421 GRY RS 232 TXD GRY BLK Not Used Connector A 18 Pin Mx420 2 MX421 B RED RED GRN ORG BRN BLU BLK BLK 2 Amp Fuse Terminal Block User Supplied 12 32 VDC Power Negative GND Port 2 RS 232 External Alarm Output Cable A Ref To Pin 3 Neg NMEA3 GPS In A from Ant NMEA3 GPS Out A from Ant NMEA3 GPS Out B NMEA3 GPS In B From NMEA Compatible Equipment From NMEA Compatible Equipment To NMEA Compatible Equi...

Page 36: ...X 421 or MX 421B Terminal Block 3x User Supplied Cable A NMEA1 NMEA3 GPS DIGITAL In 2 DIGITAL In 1 EXT MOB NMEA5 NMEA6 NMEA4 TX only NMEA7 NMEA8 NMEA9 NMEA10 1 PPS NMEA2 RS 232 RS 422 EXT ALARM Cable B Cable C 12 32 VDC NMEA4 fixed at 4800 Baud Only Figure 4 3 MX420 8 System Configuration ...

Page 37: ... Vdc RED WHT 12 V Out to Mx421 BRN NMEA1 In A BRN WHT NMEA1 In B PRPL NMEA1 Out A PRPL WHT NMEA1 Out B ORG ORG WHT YEL YEL BLK GRN NMEA2 In A GRN WHT NMEA2 In B BLU NMEA2 Out A BLU WHT NMEA2 Out B BLK Pwr In BLK WHT ALARMout Shield Gnd to MX421 GRY RS 232 TXD GRY BLK Not Used Connector A 18 Pin Female RED RED GRN ORG BRN BLU BLK WHT YEL 2 Amp Fuse Terminal Block User Supplied Power Input 12 32 VDC...

Page 38: ...and Service Manual MX 422 Professional DGPS Navigator MX 422 Pr of essional D GPS Navigat or MX420 8 Master MX420 2 Slave MX421 B NMEA1 OUT NMEA1 IN NMEA1 IN NMEA1 OUT Cable A Cable A Figure 4 5 MX420 BR Dual Control System ...

Page 39: ...ALARMout BLK Pwr In BLK WHT ALARMout GRY RS 232 TXD GRY BLK Not Used Shield GND to Mx421 GRY RS 232 TXD GRY BLK Not Used Connector A 18 Pin Connector A 18 Pin MX420 8 Master Mx420 2 Slave MX421 B RED RED RED GRN ORG BRN BLU BLK BLK BLK 2 Amp Fuse 2 Amp Fuse 12 32 VDC Power To Negative GND Terminal Block User Supplied Terminal Block User Supplied Ref to Pin3 Neg Ref to Pin3 Neg NMEA3 GPS In A from ...

Page 40: ...l MX 422 Professional DGPS Navigator MX 422 Prof essional D GPS Navigat or MX420 8 Master MX420 8 Slave M M X X 4 4 2 2 1 1 B B NMEA1 OUT NMEA1 IN NMEA1 IN NMEA1 OUT Cable A Cable A Figure 4 7 MX420 BRIM Dual Station Integrity Monitor System ...

Page 41: ...RN WHT NMEA2 In B BLU NMEA2 Out A BLU WHT NMEA2 Out B BLU NMEA2 Out A BLU WHT NMEA2 Out B BLK Pwr In BLK WHT ALARMout BLK Pwr In BLK WHT ALARMout GRY RS 232 TXD GRY BLK Not Used Shield Gnd to Mx421 GRY RS 232 TXD GRY BLK Not Used Shield Gnd to MX421 Connector A 18 Pin Connector A 18 Pin MX420 8 Master MX420 8 Slave MX421B MX421B RED RED RED GRN ORG BRN BLU BLK BLK BLK 2 Amp Fuse 2 Amp Fuse 12 32 V...

Page 42: ... GPS Out A to Ant YEL BLK NMEA3 GPS Our B GRN NMEA2 In A GRN WHT NMEA2 In B BLU NMEA2 Out A BLU WHT NMEA2 Out B BLK PWR In BLK WHT ALARMout GRY RS 232 TxD NMEA2 Out G R Y B L K N o t U s e d SHIELD GND To Mx421 Cable A 18 Pin Female Connector 1 2 16 4 5 6 7 8 9 10 11 12 13 14 15 3 18 17 NC Red Brown Purple Orange Yellow Green Blue Black Gray Figure 4 9 Cable A Wiring Configuration Conn A Pin Assig...

Page 43: ...d YEL NMEA5 Out A YEL BLK NMEA5 Out B GRN NMEA 6 In A GRN WHT NMEA6 In B BLU NMEA6 Out A BLU WHT NMEA6 Out B PRPL WHT Not Used PRPL Not Used GRY Optional 1 PPS GRY BLK Optional 1PPS 1 2 3 4 5 6 NC 8 9 10 11 12 13 14 15 7 16 17 18 Black Brown Red Orange Yellow Green Blue Purple Gray Figure 4 10 Cable B Wiring Configuration Only on MX420 8 2 1 6 5 4 3 11 10 9 8 7 12 16 17 18 13 14 15 Conn B Pin Assi...

Page 44: ...n A ORG WHT NMEA10 In B YEL NMEA10 Out A YEL BLK NMEA10 Out B GRN NMEA7 In A GRN WHT NMEA7 In B BLU NMEA7 Out A BLU WHT NMEA7 Out B PRPL NMEA8 Out A PRPL WHT NMEA8 Out B GRY not used GRY BLK not connected 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 NC Black Brown Red Orange Yellow Green Blue Purple Gray Figure 4 11 Cable C Wiring Configuration Only on MX420 8 Conn C Pin Assignments Front View 2 1...

Page 45: ...38 MX420 Installation and Service Manual Figure 4 12 MX420 2 Rear Panel Connector Figure 4 13 MX420 8 Rear Panel Connectors ...

Page 46: ...r MX420 8 or MX420 AIS models White Not Connected Beacon Status Out Beacon Status Out 7 7 Connect to Cable B Brown White for MX420 8 or MX420 AIS models Note Yellow 6 Green GPS Out 5 Orange GPS Out 4 Brown LPM IN 3 Blue LPM IN 2 Red 12 VDC 1 Black GND MX421 8 Pin Conn MX420 2 or MK12 Cable A Orange Cable A Orange White Cable A Yellow Cable A Yellow Black Cable A Red White Cable A Pin 1 Shield GND ...

Page 47: ...e B GrayBlack hite RTCM In 7 Yellow RTCM In 6 Green GPS Out 5 Orange GPS Out 4 Brown LPM IN 3 Blue LPM IN 2 Red 12 VDC 1 Black 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 MX421 10 GPS Only Mx420 8 Ext Beacon Corr Ext Beacon Corr Cable A Orange Cable A Orange White Cable A Yellow Cable A Yellow Black Cabl...

Page 48: ...k hite 7 Yellow 6 Green G Beacon Status Out Beacon Status Out PS Out 5 Orange GPS Out 4 Brown LPM IN 3 Blue LPM IN 2 R Black ed 12 VDC 1 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 MX421B 10 DGPS Mx420 8 or MX420 AIS Cable B Brown Cable B Brown White Cable A Orange Cable A Orange White Cable A Yell...

Page 49: ...42 MX420 Installation and Service Manual ...

Page 50: ...nsponder AUX PSP Auxiliary GPS receiver connection using NMEA 0183 interface RTCM differential correction from a beacon receiver GPS VHF A C B MX421 Smart GPS Antenna MX420 AIS NMEA2 NMEA3 Mx421 NMEA6 Long Range NMEA7 ECDIS ARPA NMEA8 Gyro NMEA9 Pilot Laptop NMEA10 Speed Log NMEA4 Mx421 NMEA5 Mx423 NMEA1 Ext GPS ...

Page 51: ...EL BLK NMEA3 GPS Out B GRN NMEA2 In A GRN WHT NMEA2 In B BLU NMEA2 Out A BLU WHT NMEA2 Out B BLK Pwr In BLK WHT ALARM Out Shield Gnd to MX421 GRY RS 232 TXD GRY BLK Not Connected Connector A 18 Pin Optional MX421B or 3rd Party Smart GPS Antenna RED RED GRN ORG BRN BLU BLK WHT YEL 2 Amp Fuse Terminal Blocks VHF ANT GPS ANT Mx423 AIS Transponder Alarm Unit Sensor RS 422 Sensor RS 422 High Speed Equi...

Page 52: ...on ATLAS ECDIS ARPA PDP LR S1 S2 S3 GLL DTM VTG PP GPS ANT VHF ANT MX531 AIS TRANSPONDER MX420 AIS OR MX420 MKD MX421B 10 SMART DGPS ANTENNA NOT REQUIRED FOR MKD EXT GPS EXT ALARM GPS OUT GLL SPD LOG PULSES Figure 4 19 MX420 AIS MKD CDU MX531 ATLAS Transponder Block Diagram ...

Page 53: ... B BLK Pwr In BLK WHT ALARM Out Shield Gnd to MX421 GRY RS 232 TXD GRY BLK Not Connected Connector A 18 Pin Optional MX421B or 3rd Party Smart GPS Antenna RED RED GRN ORG BRN BLU BLK WHT YEL 2 Amp Fuse Terminal Blocks Alarm Unit GYRO ROT RS 422 RS 422 ATLAS ECDIS ARPA A B A B Tx Rx Long Range Comm I O Port RS 422 SPEED LOG RS 422 A B A B A B Tx Tx Tx A B A B Tx Rx Cable A Cable B Cable C Power Sup...

Page 54: ...A B C JB 50 J BOX MX535 AIS TRANSPONDER GYRO SPEED GPS PILOT PLUG CX4 VHF ANT GPS ANT MX ANTENNA Optional Figure 4 21 MX420 AIS MKD CDU MX535 NAUTICAST Transponder Block Diagram ...

Page 55: ... RS 232 TXD GRY BLK Not Connected Connector A 18 Pin Smart GPS Antenna RED RED GRN ORG BRN BLU BLK WHT YEL 2 Amp Fuse Terminal Blocks RS 422 Long Range SPEED LOG ROT HEADING VBW HDT A B A B Tx Tx A B A B Tx Rx Cable A Cable B Cable C Power Supply 12 32 VDC N O C Ext Alarm Relay Power supply 24 VDC Connector B 18 Pin Connector C 18 Pin MX420 AIS PURPLE PURPLE GREY Note Optional 1PPS connection from...

Page 56: ...le Refer to the Mx420 Installation Manual for more details Note Port 5 In Out is hard wired to Ch4 ECDIS and Port 8 Out is hard wired to Ch2 Sensor 2 using the JB 50 with the MX420 and the MX535 AIS Transponder External wiring for these ports is not necessary when MX421 MX525 OR SMART DGPS ANTENNA SLAVE UNIT AIS TRANSPONDER MX423 MX531 OR OR MX575 Remote Sensor Pwr Port 3A Maximum Output Only Term...

Page 57: ...50 MX 420 Installation and Service Manual SECTION 5 INSTALLATION NOTES ...

Page 58: ...51 MX 420 Installation and Service Manual ...

Page 59: ...red with male 18 pin connectors These data cables are not interchangeable When ordering these cables please specify the part number and description as described in the list of components in Section 1 of this manual Wire Preparation Procedure Cables A B C are all 9 pair shielded cables We recommend that the main cable insulation black plastic be stripped about 5 inches back to expose the 9 color co...

Page 60: ...s center point and INMARSAT satcom A B C or M typically 10 from the array s center point in any of the possible transmitting directions and at least 5 meters from any side lobe or back lobe direction The GPS antenna should be mounted below and at least 5 meters away from these types of antennas Do not place it within 3 meters of a SSB or VHF radios or their antennas Antenna Options Two antenna opt...

Page 61: ...e installer has to determine the length needed and specify the length when ordering the cable The following cable lengths are available 15 meter twisted pair 10 lead cable P N 725637 20 meter twisted pair 10 lead cable P N 3508 102 70170 40 meter twisted pair 10 lead cable P N 3508 102 70180 90 meter twisted pair 10 lead cable P N 3508 102 70190 External Differential Connection Differential correc...

Page 62: ...ulkheads Flush Mount Frame If access to tighten the screws from the backside is impossible an optional Flush Mounting Frame is available P N 715707 First mount the frame to the navigator Next attach all of the hardware interfaces to the appropriate port i e Cable A B C Finally mount the entire assembly to the panel from the display side The frame is oversized 300 mm x 175 mm 11 81 in x 6 89 in The...

Page 63: ...nterface both of which are balanced line interfaces If for some reason you can t get this interface to work try the Port 2 RS 232 interface Other features available only from the MX420 8 are External Man Over Board MOB switch input also used for external Event input Pulse Counter inputs for the speed log Additional NMEA ports NMEA 5 through 10 Optional 1 PPS output Refer to Section 4 of this manua...

Page 64: ...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 The default condition of the Speed Over Ground output is not active External Alarm Output The MX420 is held open floating during normal operations In an alarm con...

Page 65: ...ve ground of the alarm power supply must be connected to the GND to MX421 shield wire in Cable A refer to the relay diagram below Coil C N O N C Cable A Pin 18 ALARMout Continuous Duty SPDT Relay 12 VDC 75 mA MX 420 To a Battery Back Up Alarm Power Supply Cable A Pin 1 Shield Gnd To Mx421 Port 2 RS 422 RS 232 Serial Interface The CDU has a standard RS 232 interface similar to a PC COM The RS 232 u...

Page 66: ...below shows the bi directional RS 232 interface between the MX420 NMEA2 port in Cable A and a PC serial port GRN WHT SHIELD BLK GREEN GRAY 13 NMEA2 IN B 1 GND 12 NMEA2 IN A 17 NMEA2 TXD RS 232 Mx420 CABLE A PC CONN DB9S Female Terminal Strip RED BLACK 12 VDC NEG 2 PWR IN 3 PWR RET NMEA Interface The MX420 meets the NMEA 0183 version 2 1 electrical standard for marine interface communications with ...

Page 67: ...ndard Talker The talker output is a RS 422 output NMEA talker output B is active compared to GND or shield of the navigator In the old version output B was normally tied to GND or shield The maximum drive voltage between the talker A and B outputs is 6 volt Compared to the former 0 to 15 volt output the negative voltage between the talker A and B output may be a problem on older listeners which do...

Page 68: ... Hex 0D 0A CR LF end of sentence must follow the last field in each sentence The data fields are identified only by their position within the sentence as deter mined by the field delimiters comma Numerical data fields within a sentence may vary in length from one sentence to another depending on the precision available Data field position is therefore determined only by counting commas rather than...

Page 69: ...formatter Cross Track Error NMEA Output Sentences All sentences have the identifier GP for Global Positioning Systems All position data are in the user selected displayed datum except for GGA where the datum can be manually set to WGS84 independent of the selected displayed datum RMB is transmitted only if an active route is present Please refer to the Route section of the Operator s Manual for de...

Page 70: ... Satellites WCV Waypoint Closure Velocity GST GPS Pseudorange Noise Statistics WPL Waypoint Location GSV GPS Satellites In View XTE Cross Track Error Measured HSC Heading Steering Command ZDA Time Date MSK MSK Receiver Interface ZTG UTC Time to Destination Waypoint MSS MSK Receiver Signal Status APA Rnn and SNU are older sentence formats version 1 5 not recommended for new designs HDT Heading True...

Page 71: ...e current version of the NMEA 0183 standard requires that a checksum be present the checksum is not required by the MX420 However if the checksum is included in the NMEA sentence the MX420 will reject any sentence where the checksum and data do not correlate 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 v...

Page 72: ...er 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 The hardware interface is accomplished by connecting NMEA Output 1 to...

Page 73: ...virtually no visible position delay between the two units When the two units are first configured as master and slave the master listens for a configuration polling message from the slave Once the master recognizes the slave s polling message the Common Data Base see Table below is downloaded from the master to the slave This function also takes place each time the units are powered up Table 5 Mas...

Page 74: ...f the other solution is better it will switch to use that position solution Essentially the Master mode will transfer automatically to the unit whose position solution is being used for navigation CABLE A PORT 1 CABLE A PORT 1 4 5 6 7 1 1 6 7 4 5 MX 420 8 MASTER UNIT MX 420 8 SLAVE UNIT BRN NMEA1 IN A BRN WHT NMEA1 IN b PRPL NMEA1 OUT A PRPL WHT NMEA1 OUT B SHIELD MX 421B Antenna Connected SHIELD ...

Page 75: ...ide position data to the transponder The MX420 AIS Navigation system performs both the CDU functions to the AIS transponder and navigation functions just like any regular GPS navigator The MX420 AIS Basic and the MX420 AIS Navigation Systems are essentially identi cal control and display unit The main difference is the addition of the MX421 smart antenna and the activation of the AIS option AIS li...

Page 76: ...1 Communication speed between the MX420 and the transponder is preset at 57 6 Kbps Refer to the MX423 AIS Shipborne Class A Transponder installation manual for more details Troubleshooting Guide The MX420 is virtually maintenance free There are however a few important points to note Please check your installation carefully before returning the MX420 to the dealer or factory for service A few troub...

Page 77: ...lace antenna Return the unit for repair No position update tracking satellites Red traffic light solid all the time DGPS mode set to DGPS Only and no corrections are being received GPS satellite signals weak satellites dropping in and out Check maximum cable length restrictions and cable condition for weak satellite signal condition Return the unit for repair All data lost at power up Backup batte...

Page 78: ...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 MX420 PC Interface The diagram below shows the RS 232 interface between the MX420 NMEA2 port only and a PC serial port GRN WHT SHIELD BLK GREEN GRAY 13 NMEA2 IN B 1 GND 12 NMEA2 IN A 17 NMEA2 TXD RS 232 Mx420 CABLE A PC CONN DB9S Female Terminal Strip R...

Page 79: ...turn in the right hand side of the computer screen 9 The traffic lights will turn from red to yellow and then to green 10 When the download is finished the computer will return to the DOS prompt Turn the main power supply switch OFF and ON and verify the program version in the AUX 7 display Under the AUX7 screen press the left most softkey 3 times to show the complete program build number i e V1 5...

Page 80: ...MX Marine A division of NAVICO Inc 23868 Hawthorne Blvd Suite 201 Torrance CA 90505 USA 1 310 791 8213 Telephone 1 310 791 6108 Fax Internet www mx marine com ...

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