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Navico MX420, Operator'S Manual

The Navico MX420 Installation & Service Manual is your comprehensive guide to properly set up and maintain your Navico MX420 device. This essential manual is available for easy download, completely free of charge, from our website. Don't miss out on obtaining the knowledge needed to maximize your MX420's performance; visit manualshive.com to download your copy today.

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Version 2.0

209

Glossary

Operator’s Manual

REFERENCE COMPASS

The compass against which the steering compass (see STEERING
COMPASS) may be calibrated.

REFERENCE ELLIPSOID

A mathematical description of the Earth’s ellipsoidal shape (see
ELLIPSOID), which is the reference frame for positioning computa-
tion.

REFERENCE GPS MONITOR

A GPS CDU whose precise (surveyed) position is known.  It com-
pares its own GPS position solution to the surveyed position and
generates correction values as a function of the position coordi-
nate differentials.  The correction values are transmitted to user
GPS CDUs for use as corrections to their own GPS position solu-
tions.

RESET

To return stored values to either the default value or zero in memory.

RHUMB LINE

The course of a vessel that keeps a constant compass direction,
drawn as a line on a chart or globe and cutting across all meridians
at the same angle.  A rhumb line is a straight line on a Mercator
chart.

RHUMB LINE NAVIGATION

Navigation based on Rhumb Lines.  See also GREAT CIRCLE NAVI-
GATION.

RMS

See ROOT MEAN SQUARED.

ROOT MEAN SQUARED (RMS)

A statistical measure of probability, stating that an expected event
will happen 68% of the time.  In terms of position update accuracy,
68 position updates out of 100 will be accurate to within specified
system accuracy.

Summary of Contents for MX420

Page 1: ......

Page 2: ... N 3508 102 70040 By G Dorotheo MX420 2 GPS DGPS MX420 8 GPS DGPS MX420 BR MX420 BRIM MX420 MKD MX420 AIS DGPS IMPORTANT NOTICE THE MX420 IS AN AID TO NAVIGATION ONLY UNDER NO CIRCUM STANCES SHOULD IT BE USED IN LIEU OFAUTHORIZED GOVERNMENT CHARTS ITSACCURACY CAN BEAFFECTED BY MANY FACTORS SUCH AS EQUIPMENT DEFECTS ENVIRONMENTAL CONDITIONS OR IM PROPER OPERATION THE USER IS RESPONSIBLE FOR SAFE NA...

Page 3: ... minor or moderate injury and or appreciable material finan cial and environmental damage This symbol is also used to alert against unsafe practices Important paragraphs which must be adhered to in practice as they enable the product to be used in a technically correct and efficient manner This manual contains important safety directions as well as instruc tions for setting up the instrument and o...

Page 4: ...don t be surprised if you see the same or similar information more than once This manual is organized by describing first the various MX420 mod els covered in this book Then the special front panel features includ ing the traffic light indicator The sections that follow detail each pri mary function as it is presented on the front panel i e NAV RTE WPT PLOT CFG The appendixes describe important de...

Page 5: ...for installation and service of your new GPS receiver MX Marine strongly encourages you to utilize the knowledge and experience of your sales and service dealer Should you need to contact us directly for new sales upgrades repair service or technical support we can be reached at the following International MX Marine US ADivision of NAVICO Inc 23868 Hawthorne Blvd Suite 201 Torrance California 9050...

Page 6: ...420 8 DGPS 3 MX420 BR 4 MX420 BRIM Dual Control Integrity Monitor 4 MX420 MKD 5 MX420 AIS 5 DGPS Beacon System 7 Keypad Display Description 8 Differential GPS Traffic Light Operation 9 Red Flashing 9 Red Yellow Solid 9 Red Solid 9 Yellow Green Solid 9 Yellow Solid 10 Green Solid 10 GPS Traffic Light Operation 10 Red Flashing 10 Red Yellow Solid 10 Red Solid 10 Yellow Solid 11 Green Solid 11 The Di...

Page 7: ...cation System AIS 17 Navigate 18 Dead Reckoning 19 NAV1 The Panorama Screen 19 NAV2 Basic Steering Information 22 NAV 3 Expanded Navigation Information 23 NAV4 Sensor Input Navigation 24 Route 28 RTE1 The Active Route 29 Creating a Route Using the GOTO Key 30 Erasing an Existing Route 33 Creating a Multi Waypoint Active Route 34 Insert By Number 35 Choose in Bank 36 Insert New Waypoint 37 Insert R...

Page 8: ...53 To Lock a Waypoint 53 To Unlock a Waypoint 54 To Lock all Waypoints 54 To Unlock all Waypoints 55 Removing Waypoints 55 Moving waypoints 57 Downloading Waypoints Routes to Other Devices 58 Rnn Routes 59 RTE Active Route 59 WPL Waypoint Location NMEA 0183 Standard 60 WPL Waypoint with Symbols Description NMEA 0183 Expanded 60 Downloading Waypoints to a Personal Computer 61 Uploading Waypoints fr...

Page 9: ...e Display 82 TIDE2 Tide Table Port List 83 Adding a Port 85 Auxiliary 86 AUX1 Alarm Log 86 AUX2 Speed Graph 87 AUX3 Not Used 87 AUX4 Sun Almanac 87 AUX5 Moon Phases 88 AUX6 Batteries 88 AUX7 Unit Information 89 Position 90 POS1 Position Display Large 90 UTM 91 User GRID 91 POS2 Position Altitude Magnetic Variation Time 92 POS3 Position Log 92 GPS 94 GPS1 GPS Status Screen 94 GPS2 GPS Health Screen...

Page 10: ...Dual Station Control 106 GPS Elevation Mask Control 107 Init Pos Initial Position Entry 108 Language Language Configuration 109 Lighting Display Keyboard Light Contrast Control 109 Log Speed Log Input Pulse or NMEA 0183 109 Log Pulses GPS SOG Log Pulse Output 111 MX480 MX480 PC Chart Interface Control 111 Navigation 112 NMEA Out 1 through n NMEA 0183 Output Data Control 115 Other Special Cases Aff...

Page 11: ...53 AIS 3 RECEIVED RX SAFETY MESSAGES 155 AIS 4 TRANSMIT TX SAFETY MESSAGE 156 AIS 5 TX Safety List 158 AIS 6 REGIONALAREAS 159 AIS 7 LONG RANGE LR DISPLAY 161 AIS 8 AIS DATA LINK STATUS 163 AIS 9 AIS STATUS 164 AIS 10 AIS Password 165 PLOT 3 AIS Plot Screen 167 Appendix B Datum List 168 Appendix C Beacon List 169 Appendix D Engineering Mode 183 AUX7 Unit Information Self Test 183 CDU Cold Start Cl...

Page 12: ...Version 2 0 vii Table of Contents Operator s Manual Appendix F Demonstration Mode 195 Glossary 197 PRODUCTWARRANTYANDLIMITATIONOFLIABILITY 221 ADDENDUMS ...

Page 13: ...viii Version 2 0 Operator Manual Table of Contents ...

Page 14: ...e receiver known as the Reference Station is placed at a surveyed location the coordinates of which are precisely known The purpose of the differential GPS system is to use the refer ence station to measure the errors in the GPS signals and to compute corrections to remove the errors The corrections are then communi cated in real time tothe navigators where theyare combined with the satellite sign...

Page 15: ... This GPS receiver s position accuracyis improved to2 meters or better for 95 of the time subject to the availability accuracy and control of the DGPS correction transmission from the Beacon Station The beacon radio signal which carries the DGPS corrections may be hampered by weather conditions such as heavy rain snow and thun der storms The beacon radio signal mayalso be interrupted bypower ful r...

Page 16: ...GPS only smart antenna The smart antenna can achieve au tonomous GPS accuracy better than 3 meters MX 422 Professional DGPS Navigator MX 422 Professional DGPS Navigator Mx420 CDU MX421 10 or MX521 Smart GPS Antenna Basic MX420 2 or MX420 8 GPS DGPS Configuration MX420 2 DGPS This is a basic MX420 2 CDU supplied with a MX Marine combined GPS and Beacon smart antenna MX421B 10 MX521 MX525 The smart ...

Page 17: ... Dual Control Integrity Monitoring IM feature is a software option that works onlyin the MX420 8 CDUhardware This configuration allows data to be shared between two remotely separated stations i e navigator s station and helmsman s station with independent access to various information fields The purpose of this configuration is to enable each CDU tocalculate its own position then check the operat...

Page 18: ... does not have any navigation functions MX 422 Professi onal DGPS Navigator MX420 AIS GPS Ant M 423 AIS Transponder X MX420 AIS Basic Configuration MX420 AIS AIS Navigation System An enhanced MX420 MKD unit supplied with the MX Marine smart DGPS antenna This model has full navigation and AIS features MX 422 Professional DGPS Navigator MX420 AIS MX421B Smart DGPS Antenna GPS Ant M 423 AIS Transpond...

Page 19: ...6 Version 2 0 Operator s Manual Keypad Display Description 2 Three smart GPS DGPS antenna models are compatible with the MX420 CDU They are the MX421 10 GPS or DGPS MX525 DGPS only and MX521 GPS or DGPS ...

Page 20: ...ments the refer ence station Integrity Monitor IM equipment located at the beacon site and the Navigator equipment located on board the user s boat or vehicle The DGPS beacon system design is illustrated below 5271 01C 500 Navigator Site N AV P L OT P O S E T I D E GP S C F G R TE A U X D GP S C WP T MX420 Navigation System MX 50M DGPS Beacon Modulat or MX 9400R D GPS Re fere nce Reference Station...

Page 21: ...isplay will tell you how your navigator is operating Note You need to take care in reading the traffic light indica tions as there are overlapping possibilities between the GPS and DGPS modes If you are unsure of the current operating mode select the CFG function key and scroll down to the DGPS selection If the DGPS mode is se lected to anything other than Off then follow the Differ ential GPS Tra...

Page 22: ...ow the receiver to run for at least 20 minutes after changing to Red Solid to collect an almanac from the satellites regardless of whether a position update has been calculated or not This is also a normal indication if the HDOP is greater than 10 ifthe receiver is tracking too few satellites or for other reasons as well Read the GPS and DGPS function screens for more information Yellow Green Soli...

Page 23: ...ctions received their age your distance from the reference station and the geometryof the satellites This is the normal operating condition and no icon will be displayed GPS Traffic Light Operation Red Flashing Not tracking satellites no position update This is normal for the first 2 minutes or so when turning the unit on The very first time you turn the unit on or if the memoryis reset or lost th...

Page 24: ...ght condition occurs Green Solid GPS position update with HDOP value less than 4 This is the normal operating condition Position accuracy is normally between 3 to 5 meters but can be out as much as 30 meters Keep in mind that posi tion accuracy is always only as good as the geometry of the satellites and the navigation information provided by the satellites This is the normal operating condition a...

Page 25: ...essed Don t forget to press the E function key when you have finished editing a screen The Function Keys The Function Keys are the keys tothe right ofthe display There are 18 function keys in all Eleven of the function keys access various screen and editing displays Three of these keys are used for editing or mov ing within the screens One keyis used to mark your present position another is used s...

Page 26: ...ettings two night time settings or a daytime night time setting Select the CFG function key and scroll down to the Lighting menu choice to make the desired adjustments Refer to the Configuration section of the manual for a complete description of the Lighting menu options POWER ON OFF This function key turns the unit on and off When depressed while the unit is on you will be prompted to select a Y...

Page 27: ...ports i e BWC and BWR are changed to reflect the current crisis situation This way other interfaced equipment can also help guide you back to the MOB position When the MOB condition is canceled via a MOBscreen softkey the NMEA sentences will automatically revert to the ac tive route information Don t forget to cancel the MOB so your interfaced equipment will read the correct data The MOB function ...

Page 28: ...n that you don t want to use the changes you have made pressing the Escape softkeywill restore the original information However once you press the E key all changes are accepted and the original data is lost C C CLEAR This function key is probably the least used of all the function keys however it can save you some otherwise frustrating editing time This key allows you to erase or clear one charac...

Page 29: ...f the edit mode Another helpful feature on this CDU is that successive depressions on the function key when not in the edit mode allow you to page through all of the screens available for that particular function You can accomplish the same thing by selecting a function and using the left and right arrows on the cursor key which is sometimes faster Whichever method you choose it is impossible to g...

Page 30: ...bout theAIS displays are avail able in Appendix A Automatic Identification System on pages 131 through 150 of this manual The number and letters on the top and bottom of the AIS key can be used in the editing mode Note The AIS display key is not functional in the MX420 2 and MX420 8 mod els This is a special key that is active only in the MX420 AIS or MKD models Non AIS models will show the messag...

Page 31: ...impact the NAV functions COG SOG sets the filtering time for the displayed values Datum sets the reference datum for your present position and waypoints in the active route GPS Offset sets an offset for calculating the GPS antenna posi tion if you can t physically locate the antenna exactly where you want it e g over the centerline of the boat Navigation sets a varietyof important functions and al...

Page 32: ...om time to time to get the CDU to do exactly what you want it to Dead Reckoning TheMX420 CDUis capableofDead Reckoning DR calculation when appropriate compass heading and speed log sensors are connected and activated Refer to the NAV4 and CFG sections of this document When the CDU is in the DR mode a DR icon is displayed in the upper right corner of the screen NAV1 The Panorama Screen This screen ...

Page 33: ...lot screens will automatically place these navigation markers on the screen as you approach them The degree values that you see are your Course Over Ground COG as calculated by the GPS receiver s position fix to position fix and Bearing BRG from your present position to the waypoint The speed value is your Speed Over Ground SOG as calculated bythe GPS The distance value displayed as the Range RNG ...

Page 34: ...the other in which the data is displayed in a separate window to the left of the graphic screen Ifyou drift outside ofyour cross track error limit and you decide not to return to your original course line you can reset your course line from your present position to the waypoint by selecting Reset XTE from the display The Skip Waypoint softkey allows you to skip the waypoint you are presentlygoing ...

Page 35: ...presents the out of bounds or beyond the cross track error limit area Whenever the boat is left or right of the course line the corresponding checkered area changes to solid black indicating the side of the course line that you are on The number next to the course line is your calculated cross track error The numbers in the lower left and right hand corners indicate the cross track limit you set i...

Page 36: ...aypoints Just as in NAV1 you will see an RL or GC symbol in the upper right corner of the display indicating whether you are navigating under RhumbLine or Great Circle This is set in theCFG1 Navigate menu NAV 3 Expanded Navigation Information Navigate screen 3 has four windows The upper left window is a smaller version of NAV2 Please read the previous section for a de tailed description of this wi...

Page 37: ... appropriate You can setup the sensors in the CFG1 screen The Installation Service Manual will guide you through the interfacing capabilities of the CDU Use the following CFG1 menus to set this screen up Compass Sets the input port number compass type gyro or mag netic compass deviation table and the input NMEA 0183 record from which to derive the compass information The NMEA 0183 record should be...

Page 38: ...etails relating to the True Wind Angle TWA True Wind Speed TWS and True Wind Direction TWD which are taken from the NMEA 0183 record of MWV or VWR Ifthe wind information is given in relative terms the CDU calculates true values using available GPS course and speed information tomake the necessaryadjustments Refer to the Glossary for definitions on Apparent True Wind Angle Speed Direction Tothe rig...

Page 39: ...ver Ground SOG calculated by MX421 smart GPS antenna Speed Log LOG the NMEA 0183 or pulse speed input and the Waypoint Clo sure Velocity WCV WCV reflects the real time velocity from your present position and course towards the next waypoint The VMG and WCV are calculated from GPS data Refer to the diagram below to see a graphical representation between VMG and WCV Present Position SOG 13 Kn Beginn...

Page 40: ...e right displays depth information coming from the depth sounder unit using the NMEA0183 record of DPT DBS DBT or DBK These are setup in the CFG1 Depth screen refer to the Con figuration section of the manual and the Installation Service Manual for full details on depth data Below the depth data you will find the next route leg vector the Range to the waypoint and Time To Go data explained in the ...

Page 41: ... The RTE1 screen provides all of the current or active waypoint navigation data to the Navigate and Plot screens and is referred to as the Active Route Therefore whenever you begin a new trip or voyage you should erase the previous voyage s waypoints in this screen then insert the new waypoints or routes from RTE2 for the new voyage If you want to store the waypoints from the previous active route...

Page 42: ...n or UTM and some alarm limits Time sets time offsets and 12 or 24 hour clock mode for ETA calculation and waypoint passed time stamp RTE1 The Active Route The RTE1 screen provides the active route data for the NAV and PLOT screens It also maintains a waypoint pass log for you Another important feature in the RTE1 screen that you need to be aware of is that the up Ï and down Ð arrow softkeys displ...

Page 43: ... waypoint stored in the Waypoint Bank This feature is nice touse ifyou alreadyknow the waypoint number that you want to go to and you don t want to waste time scrolling through the available waypoints Enter the number of the waypoint verify that the coordinates are correct and press the E key to copy the waypoint to the active route Choose In Bank allows you to scroll through the Waypoint Bank Ali...

Page 44: ...dinate by specifying the bearing and range from your present position which is also stored at the next available waypoint location in the Waypoint Bank After entering the desired bearing and range press the E key The newly defined waypoint is copied to the active route automatically If you make a mistake you can use the cursor key to position the cursor over the mistake and overwrite the error Use...

Page 45: ...the CDU saves and displays the original coordinates entered when you created the route Waypoint 0 is displayed in Inverse Video that is white characters on a black background when in the normal Daylight display mode see CFG1 Lighting This indicates that you have already passed this coordinate The time stamp at the lower portion of the description window indicates when the route was created If you ...

Page 46: ...passed Remember that the ETAtime is filtered over time so allow a few minutes for the filter to settle when you first get underway or make course and speed changes Erasing an Existing Route To erase the active route 1 Select the RTE keyuntil the RTE1 screen is displayed 2 Press the E key 3 Press the Remove softkey 4 Press the Erase Route softkey 5 Press the Yes softkey to confirm The active route ...

Page 47: ... defined in the RTE2 screen Our experience has shown that you are likely to choose several of these methods at anygiven time to create a route You can mix any of these routines to create routes amend routes or insert waypoints in the middle of existing routes The software is designed tobe as flexible as possible to meet your changing needs Be sure to take a few minutes to read through the Plotter ...

Page 48: ...if RTE1 is empty 4 Select Insert by Number from the display 5 Use the keypad to type in the number you want or the beginning number of a range you would like to select from or use the cursor keytoscroll through the previouslystored waypoints in numerical order 6 When you have found the waypoint you want press the Insert this WPT softkey 7 You can then choose to select another waypoint using the sa...

Page 49: ... 5 Select a waypoint by A Pressing the Sort By softkey to arrange the waypoints by num ber name type distance or age refer to the Waypoint section for a full description then using the cursor keytoscroll through the previously stored waypoints in the Waypoint Bank B Pressing the Search for WPT softkey When using this selec tion you actually spell out the name and or symbols of the waypoints you ar...

Page 50: ...the directions in the Erasing an Existing Route section to start with an empty route if you have waypoints in the RTE1 screen 1 Select the RTE keyuntil the RTE1 screen is displayed 2 Press the E key to enter the edit mode 3 Select Insert from the display Skip tothenext step if RTE1 is empty 4 Select Insert new Waypoint from the display 5 Choose either Bearing Distance or Lat Lon Grid Point or TD i...

Page 51: ... in theRoute section 1 Select the RTE keyuntil the RTE1 screen is displayed 2 Press the E key to enter the edit mode 3 Select Insert from the display Skip tothenext step if RTE1 is empty 4 Select Insert Route from the display 5 Use the cursor key to scroll through the available defined routes which are created in the RTE 2 screen in numerical order 6 When you have found the route you want press th...

Page 52: ...asional circumstance where you acci dentallyskipped a waypoint due to your waypoint pass criteria selec tion in the CFG1 Navigation screen or a manual skip in the NAV screens and you want to switch back to a previous waypoint in the active route You may also decide at some point that you want to skip the current or subsequent waypoints in the route The software has a very simple design to accompli...

Page 53: ...waypoints You will need to either change your Waypoint Pass Criteria change your Waypoint Pass Distance see CFG1 Navi gation or remove the waypoint from the route Inserting Waypoints or Routes into an Existing Route 1 Select the RTE keyuntil the RTE1 screen is displayed 2 Scroll through the route with the cursor keyuntil the cursor arrow is at the bottom of the waypoint you want to insert the new ...

Page 54: ... E key All waypoints in the waypoint bank will be displayed if they are within the zoom level of the display Note that the waypoint must have a symbol as the first character of the waypoint name in order for it to be displayed on the PLOT screen when the edit mode is not active 3 Use the cursor key to move the magnifying glass icon over the waypoint or marker that you want to go to Verifythat the ...

Page 55: ...oftkeyfrom the main RTE1 menu 1 Select the RTE keyuntil the RTE1 screen is displayed 2 Press the E key 3 Press the Route Control softkey 4 Press the Reverse Direct softkey 5 Press the E key It s that simple Notice that you still keep the same orientation on the screen in other words you always read from the top of the screen to the bottom of the screen The waypoints are rewritten in reverse order ...

Page 56: ... in the CFG1 Time display The software calculates Estimated Time ofArrival based on how you configure the unit ETAsettings are controlled from the RTE1 screen To change the ETA settings 1 Select the RTE keyuntil the RTE1 screen is displayed 2 Press the E key 3 Select the ETA SOG Calc softkey 4 Use the Change softkey to select which value you want the CDUto calculate either ETA based on speed or sp...

Page 57: ... SOG to meet the specified arrival date and time The result is given in a percentage value next to the displayed SOG in the NAVscreens If the percent age is below 100 you will arrive late If the percentage is above 100 you will arrive early ETA Based on Speed 5 Select a Speed Basis of either GPS SOG which uses a long filter time in seconds that you define or Constant which uses a speed you intend ...

Page 58: ...find a Route Name softkey when you first enter the edit mode The Route Name selection allows you to identify each route by name number and symbol when you are viewing the Route Bank from the main menu To create a route 1 Select the RTE key until the RTE2 screen is displayed 2 Move the cursor to the route number you want to create or edit 3 Press the E key 4 Use the entry methods described in the C...

Page 59: ...bol you want this route to be identified by 6 Press the Done softkey when you are finished editing the name Note It is a good idea at this point to select Lock Route so that way you won t accidentally erase the route sometime in the future 7 Finallypress the E key toexit the edit mode ...

Page 60: ...he list is rather straight forward the software does provide some helpful features that should be mentioned before giving anyexamples There are six methods to view or sort waypoints Sort By Number displays the waypoints in waypoint numerical order starting with waypoint 0 Note You can manually alter Waypoint 0 to a differ ent Point of Departure if you don t want to start your route from your prese...

Page 61: ... You might occasionally see a prompt warning you that the waypoint is used either in a stored route or the active route You ultimately have the final decision whether to continue editing the waypoint or exiting this waypoint by pressing the E key again to exit the edit mode Creating and editing waypoints is easy 1 Select the WPT key until the WPT1 screen is displayed 2 Press the E key 3 Press the ...

Page 62: ...aring from an existing WPT Select Range Bearing Select desired datum from displayed list Press Select Enter desired range and bearing Press the cursor down arrow 5 Enter Coordinates Press the cursor down arrow 6 Modify WPT Number Optional Press the cursor down arrow 7 Modify WPT Text Symbol Optional Press the Done softkey 4a Make New WPT Select Lat Lon W84 Lat Lon Datum or Range Bearing ...

Page 63: ...ete list of datums and their WGS 84 offset Goto step 5 Range Bearing allows you to define new waypoint coordinates from an existing waypoint in the Waypoint Bank When you use this feature make sure you align the cursor next to the from waypoint number before you press the Make NewWPT softkey Once you have entered the range and bearing the CDU calcu lates the coordinates You can then enter a text d...

Page 64: ...h Otherwise the CDUassigns the next available number begin ning at 1 Range Bearing Lat Lon This feature allows you to create a range of waypoints within a particular area For example you could put all ofthe waypoints for fishing spots near Catalina Island in the range of500 to 530 all the waypoints for Cabo San Lucas in the range of 575 to 600 etc 7 Move the cursor down and enter the symbol and na...

Page 65: ...to cycle through these additional characters About one second after you stop scrolling through the alpha char acters the cursor will automaticallyadvance to the next space 7 Press the Done softkey 8 When you are finished press the Lock this WPT softkey to avoid accidentally erasing the waypoint in the future Note Locked waypoints can not be overwritten by waypoints downloaded from the NMEA port or...

Page 66: ...e waypoint number as a locked waypoint already stored in the CDU the waypoint data received on the data port is disregarded and lost Waypoints are locked by one of three methods 1 selecting Lock this WPT when in the waypoint bank edit mode for a particular waypoint 2 selecting Lock this WPT when in the waypoint bank edit mode or 3 incorporat ing a waypoint intoa route stored in RTE2 and then locki...

Page 67: ...the desired waypoint 3 Press the E key 4 Press the Unlock this WPT softkey 5 Press the E key If you simply want to modify the waypoint Edit this WPT will be displayed on the bottom left of the screen To Lock all Waypoints 1 Select the WPT key until the WPT1 screen is displayed 2 Move the cursor to the desired waypoint 3 Press the E key 4 Press the More softkey 5 Press the More softkey again ...

Page 68: ...y again 6 Press the Unlock all WPT softkey 7 Press the E key Removing Waypoints Unlocked waypoints can be overwritten by waypoints received on the NMEA port Waypoints that are contained within a stored route can not be removed until they are removed from the stored route in the RTE2 screen If you try to remove a waypoint stored in a route a warning will be displayed indicating the first route a wa...

Page 69: ...o remove a waypoint Remove this WPT Remove Unused and Remove Range 5a If you select Remove this WPT the waypoint will immediately be removed from the Waypoint bank 5b If you select Remove Unused the CDU will delete all waypoints that are not locked or stored in a route You will be prompted to confirm the deletion 5c If you select Remove Range the CDU will delete all unlocked waypoints that are not...

Page 70: ...To move a waypoint or range of waypoints 1 Select the WPT key until the WPT1 screen is displayed 2 Press the E key 3 Press the More softkey 4 Press the Move softkey 5a Tomove a single waypoint enter the original waypoint number on the First WPT Number and Last WPT Number 5b To move a range of waypoints enter the first and last waypoint numbers to move on the First WPT Number and Last WPTNumber Kee...

Page 71: ...that is to be overwritten confirming each waypoint one at a time overwrite all the waypoints Yes ToAll not overwrite any waypoints No or Escape back to base softkey menu Downloading Waypoints Routes to Other Devices Refer to the Installation Service Manual for hardware interfacing guidelines The CDU can download all of your stored waypoints and routes and your active route to other NMEA 0183 devic...

Page 72: ...cksum can be set on or off default on RTE Active Route Waypoint identifiers listed in order with starting waypoint first for the identified route Twomodes of transmission are provided c indi cates that the complete list of waypoints in the route are being trans mitted w indicates a working route active where the first listed waypoint is always the last waypoint that has been reached FROM while the...

Page 73: ...ial SendAll option Selecting this feature will send all the waypoints in the Waypoint Bank once independent of the WPL sentence setup as ON or OFF This format conforms to the NMEA 0183 standard WPL can be sent as version 1 5 2 0 or 2 1 field 2 3 4 5 6 7 GPWPL llll ll a yyyyy yy a cccc hh CR LF explanation actual use 2 3 Waypoint Latitude North or South N S number of decimals can be set to 2 3 4 or...

Page 74: ...can be set to 2 3 4 or 5 default 2 6 Waypoint identifier 4 place numeric waypoint number fol lowed by1 space followed by10 characters for the top line of the description followed by10 characters for the bottom line of the description When this field is output you may see spaces between the xxx and zzz These are fill characters and are necessaryto fulfill the 10 character count tomaintain character...

Page 75: ...s are set to Yes then set all of the NMEA sentences to No You need to do this to record just the waypoint data If the port is not Active No change it to Yes 6 Scroll down to the WPL record and change it On 7 Select the Details softkey 8 Set Include Waypoint Names to either No or Yes Refer to WPL Waypoint Location NMEA Compliant and WPL Waypoint With Symbols Description NMEA 0183 Non Compliant sect...

Page 76: ...aypoints from any device which follows the WPL formats identified earlier in the Waypoint section The first two characters following the can be anyNMEAdefined talker ID You do not have to calculate and include the checksum however you must end each data record with a carriage return and line feed If you do include the checksum at the end of the data record the CDUwill verify the checksum Ifthe che...

Page 77: ...ograms like Windows 3 1 or 3 11 Terminal are suf ficient to get the job done Unfortunately Windows 95 and new Win dows O S doesn t provide a basic terminal emulation program there fore a third partyprogram is required with Windows 95 and abive Using Windows Terminal do the following from the Program Man ager 1 Connect the CDU s port 2 RS 232 port tothe PC s communications port Refer to the Install...

Page 78: ...one Flow Control none Connector Com1 or Com2 depending where the external interface is ParityCheck blank Carrier Detect blank OK 12 Click on the Transfers menu 13 Double click on the Send Text File menu item and make the follow ing settings select the correct file name txt select the correct location folder for the file check the Append LF box OK 14 When all the waypoint sentences are sent press t...

Page 79: ...e cross hair symbol from the various sym bols for other waypoints when editing waypoints The CDU is also capable of performing this function from a remote contact closure input via the Cable B MOB Event wire Refer to the Installation Service Manual for interface instructions Contact clo sure on the two input pins for less than 2 seconds causes a Mark position to be generated Contact closure on the...

Page 80: ...efer to Route Choose In Bank section of the manual allows you to view waypoints in the Waypoint Bank as a list Lat Lon UTM allows you to define a coordinate and description which is also stored at the next available waypoint location in the Waypoint Bank Bearing Range allows you to define a coordinate by specifying the bearing and range from your present position which is also stored at the next a...

Page 81: ...the route The CDU saves and displays the original coordinates date and time when you created the route in Waypoint 0 Waypoint 0 is displayed in Inverse Video that is white characters on a black background when in the normal Daylight display mode see CFG Lighting This indicates that you have alreadypassed this coor dinate The time stamp at the lower portion ofthe description window indicates when t...

Page 82: ...tion Notice that this information is in standard video black characters on a white background and that an ETAtime is displayed in the same posi tion as the waypoint passed time in Waypoint 0 This indicates that the waypoint has not been passed yet Remember that the ETA time is filtered over time so allow a few minutes for the filter to settle when you first get underway or make course and speed ch...

Page 83: ...itude out to 128 nautical miles You will find these screens very helpful in many ways and we will provide you with a couple of ideas on how to make good use of the PLOT function after the screen de scription which follows For MX420 AIS models a third plot screen PLOT3 is available which shows the locations of other AIS equipped vessels relative to your ships position Additional softkeys can be bro...

Page 84: ... the graphic window based on the units selected in CFG1 Navigation Now look along the left and right edge ofthe graphic window you will see some vertical black and white dash marks these are harder to see at small scales like 1 and 2 or at large values such as 64 or 128 Each solid dash mark represents 1 nautical mile A broken dash mark indi cates 1 100th of a nautical mile when you are zoomed in a...

Page 85: ... the screen to your needs You will notice that a magnifying glass icon appears in the middle of the screen This icon is used to identifywaypoints and symbols which appear on the plot screen Use the cursor key to move the magnifying glass around Zooming out allows you to move the magnifying glass over long distances at a faster rate When the icon is on a symbol it identifies the symbol in the text ...

Page 86: ...t Bank but you can t recall the waypoint number So you go into the PLOT1 screen locate WPT 35 with the magnifying glass and press the GOTO function key At this point the active route RTE1 ismodified byplacing a newwaypoint your present position i e WPT 1996 after WPT 24 This newwaypoint is shown in inverse video indicating that you have already passed the position This is good for you because you ...

Page 87: ...e the first character of the description is a sym bol in its proper location relative to the boat s position No causes none of the waypoints to be displayed ShowActive Route Yes is the default condition which causes the active route course lines and its waypoint symbols to be dis played No causes the course lines not to be displayed Note that these lines can onlybe displayed in Rhumb Line navigati...

Page 88: ...grid is onlydisplayed at the 4 Nm scale or lower Automatic Zoom No is the default condition which causes the displayed scale to be controlled by you Yes causes the boat icon to be placed along one edge of the screen and the next waypoint flag to be placed along the opposite edge of the screen As you approach your waypoint the screen will automaticallyzoom in on your course then expand back out aft...

Page 89: ...fferent levels of track saving capability Normal Fine and Detailed The software saves each calculated position coordinate todrawthe lines for the plot screen There are a finite number of plot points which can saved in memory before the CDU begins overwriting the first set of plot points If you are traveling a long distance at a high rate of speed sayover 10 knots you probably will want to use the ...

Page 90: ...ng glass using the cursor keys and pressing the To softkey or by pressing the To o softkey which moves the cursor to the boat s present position If you choose to use the magnifying glass method make sure you move this icon before you select the Move Marker softkey After you press the Move Marker softkey pressing on the cursor keys only allows you to move within the coordinate fields PLOT3 AIS Plot...

Page 91: ...you want to maintain and by refer ring tothe bearing and range in PLOT2tomaintain the position Ifyou are placing and recovering crab pots along a course line you can enter your course in the RTE1 screen then place the marker at each crabpot in turn You can also select WPTPass Criterion Distance to WPTin the CFG1 Navigation screen and set the WPT Pass Distance 0 00 or set the WPT Pass Criterion to ...

Page 92: ...our original position This technique allows you to quickly define your search pattern control the pattern separation and view your progress along the way The CDU will prompt you to turn at the predetermined waypoints you defined This allows you to pay more attention to the task at hand rather than having to keep a close eye on the GPS re ceiver Man Over Board The Man Over Board function keyis loca...

Page 93: ...ed to reflect the current crisis situation by also indicating the bearing and range back to the MOB position until the MOB is can celed This way other interfaced equipment can also help guide you back to the MOB position When the MOB condition is canceled the NMEA sentences will automaticallyrevert tothe active route informa tion Don t forget to cancel the MOB so your interfaced equipment will rea...

Page 94: ...The MX420 8 is capable of performing the MOB function from a re mote contact closure input via Cable B MOB Event wire shared with the Mark input If the contact closure is made for less than 2 seconds the input is registered as a Mark Position If the contact closure is made for more than 2 seconds the input is registered as a MOB Posi tion Refer to the Installation Service manual for wiring interfa...

Page 95: ...identification number of this table in the BritishAdmiralty Tide Table and in the TIDE2screen The name tothe right ofthis number is the port name you entered in theTIDE2 screen A graphical representation of the tide is given in the middle of the screen The tide peak references are given to the right of the High Low time on the right of the screen High Low tide times are given to the right of the g...

Page 96: ... or the Go Back softkey to scroll up the list You can also use the left and right cursor keys to scroll through the tide tables available in TIDE2 While in the edit mode you can also move the cursor down to the date and manually change it to any date you are interested in Once you have found the table you need press the E keyagain to load the table TIDE2 Tide Table Port List TIDE2 is where you sto...

Page 97: ...ument name and sec tion AdmiraltyTide Tables Part III under the Help softkeywhen in the edit mode as an added aid to help you identify the proper reference material The Admiralty Tide Tables port lists are also available free of charge Contact your dealer or us at the address fax e mail or phone number provided at the back of this manual if you have not received a copy of these tide table lists ...

Page 98: ... the appro priate offsets The software is setup just like the manual You may encounter a table that requires seasonal offsets Where these might apply the CDU provides you the opportunity to input a Fixed value or the seasonal Table values Select the first softkey to toggle between these two selections Use the second softkey Edit Table to make the necessary corrections Press the Done softkey when y...

Page 99: ...rms are registered in this screen whether or not they have been corrected until the log is erased or the log is full When the log is full the oldest alarms are overwritten Alarms with an asterisk next to the alarm number have not been corrected and can not be reset until they are corrected Reset Log clears the alarm log entries except for anyalarm conditions which have not been corrected and any a...

Page 100: ...t is a handytool if you are trying to maintain a certain speed AUX3 Not Used AUX4 Sun Almanac This almanac provides the sunrise and sunset times for a given day and location You can enter another date or location of interest by pressing the E key and editing the appropriate date and or place Note The AUX 4 function is not active in the MX420 AIS Basic model without the MX421 antenna ...

Page 101: ...ximate power being applied to the CDU This screen is intended to give you a rough indication of the supplyvoltage It is not a digital voltmeter and can be off by 0 5 VDC or more Use it like you would a car battery indicator The voltage should remain constant when the generators are on and drop offslowly when running on the boat s batteries This is also where you reset the Lithium battery age Press...

Page 102: ...A special softkey sequence displays sub version levels the actual software build date and time and allows access to a selftest sequence This information is useful to the technician and our Field Engineers during troubleshooting To activate the screen press the left most softkey three 3 times Additional information in the Software window will be displayed MX420 2 AUX7 Screens This also activates se...

Page 103: ...e minimum elevation angle to look for satellites and in 6 channel models it also controls the satellite selection process Navigation sets a varietyof important functions and alarms used in other function screens but only the Range units nautical miles Nm nautical miles and meters Nm mtrs nautical miles and feet Nm ft statute miles Sm statute miles and meters Sm mtrs statute miles and feet Sm ft ki...

Page 104: ...ature Latitude Longitude UTM When using the UTM reference system in the polar regions of the Earth the CDU displays position using the UPS coordinate system instead of invalid UTM coordinates User GRID User defined grids is an optional feature of the MX420 When enabled you can set the receiver to provide Easting and Northing position data based on a local grid The grid function is set up in the CF...

Page 105: ...ing calculated and displayed Refer to the CFG1 Compass section for more details on how to set this up The right hand window indicates today s date and time This setup is in the CFG1 Time menu It can be set for UTC time local 12 hour time or local 24 hour time There is an added summer winter feature tohelp you remember which direction to set the clock for daylight savings in the summer There are no...

Page 106: ...s on how to set this up The right hand window indicates your accumulated mileage since the CDU was first turned on You will also find two Trip Reset softkeys if you press the E key Two trip logs are provided so that you can log the mileage for a the current leg or day of your trip and b the entire trip You will also find a flashing cursor on the second line in the Trip Log This is provided so that...

Page 107: ...ich is filled in indicates that a satellite is being tracked on that channel If a power bar is empty but a PRN number is labeled under the power bar then the identified satellite is not currently being tracked The graphic on the right hand side of the screen indicates where the satellites are relative to your present position The outer ring repre sents 0 elevation The inner ring represents 45 elev...

Page 108: ...r to calculate your position The Elevation Mask sets the lowest elevation at which a satellite will be tracked Satellites with an elevation below this number will not be tracked even if theyare otherwise available to track Unhealthy Satellites Satellites are expected to fail at some point in time and theymaycause the position calculation to become erroneous With RAIM enabled units you will be able...

Page 109: ...using the navigation solution until the RAIM indi cator switches to RAIM safe condition When less than 5 satellites are receivable a RAIM Caution will be indicated The GPS5 screen shows the position Lat Long height of antenna HDOP number of satellites used the satellite ID number that may cause the statistical error and its bias value It also shows a table containing the PRN numbers of satellites ...

Page 110: ...ge the range Otherwise you mayskip this step 100 meters is the default value Note The GPS5 RAIM Status screen is available in MX420 models with pro gram version 2 0 and using the MX521 or MX525 antenna sensors Warning THE MX420AND RAIM FEATURE IS AN AID TO NAVIGATION ONLY UN DER NO CIRCUMSTANCES SHOULD IT BE USED IN LIEU OF AUTHO RIZED GOVERNMENT CHARTS ITS ACCURACY CAN BE AFFECTED BY MANY FACTORS...

Page 111: ...receiver Searching indicates that the beacon receiver is search ing for the appropriate frequency and or modulation of the beacon transmitter in automatic search mode No lock indicates that the bea con receiver is not receiving DGPS corrections from the selected sta tion in manual tuning mode You might see the label Tracking which indicates that a MSK beacon signal is present but DGPS corrections ...

Page 112: ... case we encourage you to contact the appropriate governing agency When you are in manual tuning mode pressing the E keywill bring up the cursor on the Frequency You can only complete the manual tun ing operation by pressing the E key when the Frequency is high lighted Program the frequencyyou desire and press the E key The CDU will automatically update the Station ID If the beacon is transmitting...

Page 113: ...iver is using the correction in the navigation solution The Corr value is the actual satellite range measurement correction given in meters This value is typically be tween 20 and 20 The Age value indicates howlong it has been since the satellite range correction was generated given in seconds GPS7 DGPS Messages This screen will displaytheType 16 messages received from the beacon station being use...

Page 114: ...configuration menu scroll through to the bottom of each list with the cursor key AIS Config This is an AIS setup menu used to select the type of AIS transponder See Appendix A for more details Available selections are SAAB MX423 ATLAS MX531 or Nauticast MX535 This item is only available in MX420 8 models with theAIS feature option enabled AIS Static This is an AIS setup menu used for configuring t...

Page 115: ...d the maximum distance you entered If you are on a large commercial ship don t forget that the anchor may be several hundred feet from the receiver antenna You will need to consider this when setting in the distance COG SOG Course Speed Filter Settings Setup This screen controls the Speed Over Ground SOG unit of measure meters per second kilometers per hour miles per hour or knots You can also set...

Page 116: ...3 standard To implement this feature change Compass Connected to Yes Identify the appropriate input port that the compass connects to the receiver by using the Change softkey Select whether or not the receiver should give an alarm if data is not received on the input port Select the compass type either Magnetic or Gyro Only the NMEA 0183 records identified above are accepted for the gyro input Mag...

Page 117: ...s which datum the receiver uses to display any position There are over 100 datums to choose from Appendix B pro vides a complete list of available datums You can enter an offset to WGS 84 if your specific datum is not provided for in the receiver Use the Previous or Next softkeys or the cursor key to scroll through the list until you find the datum you need Press Escape to go back to the original ...

Page 118: ...opriate NMEA 0183 data sentences when set to Yes Data Input Port No Select the appropriate NMEA 0183 port that the sensor is connected to Ports 1 2 for MX420 2 or Ports 1 2 5 through 10 for MX420 8 Ports 3 and 4 are reserved for the MX421 antenna controls Offset Input the appropriate offset for the sensor based on the mea surement you are most interested in If your boat draws about the same amount...

Page 119: ...r portion of the screen allows you to see the depth data that is received on the data port Input and the data that is actually displayed in NAV 4 Used Value DGPS DGPS Configuration This screen controls the built in beacon receiver in the MX Marine smart antenna unit Internal Beacon Menu DGPS Mode Auto sets the receiver to automatic DGPS or GPS modes This is the default setting If DGPS corrections ...

Page 120: ...eiver will accept values from 10 to 999 seconds Due to the removal of the S A dithering from the satellite signal you may now use values of 300 seconds in the maximum age and still be very accurate Message 16 Alarm sets the alarm to On or Off if a reference station text message is received The default setting is Yes Received Type 16 messages can be displayed on the GPS7 screen re gardless of the a...

Page 121: ...t the DR to Yes press the E key then Change softkey Press the E key again to exit the edit mode Dual Control Dual Station Control This screen sets the functional control between two MX420 CDU s interfaced together The default setting is No When this selection is changed to Yes one receiver is set to Master the other receiver is set to Slave The master unit can be either an MX420 8 CDU or MX420 2 T...

Page 122: ...at is if you are forced to place the antenna in a location other than where you want your position fix calculated due to superstructure or other high power antennas you can place the antenna in a practical location Then enter the appropriate Antenna Offset and the receiver will calculate your position in the place where you would have preferred to place the antenna The RAIM menu is available only ...

Page 123: ... any user input in this circumstance However moving the receiver to a new location and not inputting a new initial position will cause the receiver to select a satellite constellation consistent with the last known receiver coordi nates In this event the receiver may get lucky and find common satellites between the old position and the new location or it may take up to 20 minutes to go through all...

Page 124: ...basic display setups The light function key allows you to instantly switch between two predefined screens Daylight Nightlight Log Speed Log Input Pulse or NMEA 0183 This screen controls the input port NMEA 0183 or Pulse and format of the speed log input to the receiver In the default condition the speed log is not connected NMEA 0183 speed is accepted from the xxVHW data sentence originating in an...

Page 125: ...e fore it is used in the receiver The default value is 1 00 Digital Pulse Input Digital Pulse Input Port No Select between Digital Input Port 1 or Digital Input Port 2 A single pulse input which is cali brated for log pulse rate and the receiver will automatically make the necessary calculations Digital Input Port 1 is pin 3 black white of Cable B connec tor and Pulse Input Port 2 in pin 2 black o...

Page 126: ...peed over ground log output from the MX420 CDU at a user defined pulse rate per nau tical mile This output is normally used to feed GPS SOG to an ARPA radar The default state is that the speed log is not active and set to 200 pulses per nautical mile Refer to the MX 420 Installation Ser vice Manual for the hardware interface from one of the NMEA output ports NMEA 1 or 2 for the MX420 2 and NMEA 1 ...

Page 127: ...le Cross track Error limits and alarms Waypoint Pass Criterion and Waypoint Approach alarms These settings have a direct effect on your route calculation and how data is displayed in the NAV and PLOT screens Navigation Sets navigation to Rhumb Line default or Great Circle mode Note When the navigation mode is set to Great Circle the PLOT screens will not show your course or cross track error lines...

Page 128: ...l c XTE Limit Sets the distance left or right from the course line you consider to be the maximum allowable off track error known as cross track error XTE The PLOT screens will display the scaled cross track error distance The NAV screens will indicate the cross track error in numerical format and present the cross track error graphi cally scaled left or right of the course line XTE Alarm Causes a...

Page 129: ...around the waypoint the radius of which you can define in WPT Pass Distance The default value is 0 10 Nm If you set this distance to 0 00 you will never pass the waypoint This is a great way to perform station keeping maneuvering Refer to the Plot Screen Use Examples in the Plot section for further details on this application Bisector Line Passing the waypoint is determined by reaching the bisecto...

Page 130: ...ition these data fields will revert to valid data and the autopilot will accept the receiver data again This is provided as a safety feature so that the boat does not turn toward a new direction without your knowing of the impending change To disable the alarm select No the de fault condition with the Change softkey NMEA Out 1 through n NMEA 0183 Output Data Control These screens set the specific ...

Page 131: ...oing so the receiver will display all available NMEA 0183 output sentences MX 420 2 NMEA Out Menu MX420 8 AIS NMEA Out Menu Scroll down the list using the cursor key to the desired NMEA 0183 sen tence Use the Change softkey or right arrow key on the cursor to select On Press the Details softkey to view the characteristics for the NMEA record you select If you notice that the top of some text is cu...

Page 132: ...lected in CFG Position Most NMEA Version Some of the NMEA 0183 records are no longer supported by version 2 3 However you may have an autopi lot plotter or other older model equipment that does not sup port the newer version of the NMEA 0183 standard The re ceiver provides you the flexibility to interface using older ver sions of the NMEA standard to support these devices Decimals In Lat Lon The s...

Page 133: ...NMEA0183 standard you can not turn on all of the output records avail able from the receiver at a once per second output rate at one time The Total load is counter will help you maximize the port usage on the receiver It monitors the total throughput capa bility of all the output records that are currently turned on If you go over 100 and you require all of the data records that are currently turn...

Page 134: ... However MX Marine realizes that with 2000 waypoints you have spent a lot of time preparing your library of waypoints with definitions and symbols You probably will want to record these to a PC just in case the memory in the receiver fails in the future For this reason we have provided you the option to Include Waypoint Names in the WPL record to save your waypoints to a PC or to meet the NMEA 018...

Page 135: ...the Autopilot Alarm is set to Yes then the receiver changes the mode A to V indicating invalid data when you reach a waypoint or exceed your cross track error limit set in the CFG Navigation XTE Limitfield When the alarm is canceled which requires your depression of the Cancel Alarm softkey displayed during the alarm condition these data fields will revert to Valid data and the autopilot will acce...

Page 136: ...etween None de fault or 1 to 10 minutes If you enter the edit mode on any screen and have a timeout period other than None the re ceiverwillautomaticallyexittheeditmodeifnokeysaretouched and the timeout period expires Preceding Zeroes Places zeroes 0s before directions less than 100 when Yes is selected For example 079 Otherwise direc tions are shown without the leading zeros when No is selected d...

Page 137: ...r dealer for show room or trade show demonstrations However you can use it as a training tool until you become familiar with the receiver As a safety feature you can not use it to output NMEA 0183 records on the data ports to test and demonstrate other de vices such as autopilots chart plotters and radars Refer to Appendix F of this manual for a full description of the Demon stration Mode Organize...

Page 138: ...Positioning Reference Mode Alarm Control This configuration screen controls several important parameters which determine your present position Reference System This setting controls the coordinate system used to display your position The available choices are Lat Lon default or UTM Uni versal Transverse Mercator The receiver will automatically con vert any waypoint in the Route Bank or Waypoint Ba...

Page 139: ...ly un der track You may want to set the alarm to Yes if position accuracy is critical to you Otherwise this alarm is normally set to No HDOP Alarm Limit Sets the HDOP value which will cause the alarm to sound The default value is 4 The valid range is from 1 0 to 9 9 The higher your HDOP value the more error you will have in your position fix Refer to the GPS1 Current Satellite Status section of th...

Page 140: ...ng narrow column printers The receiver has two print formats namely Full or Brief A sample of the Full printer output format is given below MX Marine MX420 8 Navigator 20 42 41 UTC 12 Apr 2002 POS Mode DGPS 3D Datum W84 Position N 33 48 5056 W 118 21 0073 Altitude 5 6 m COG 346 T SOG 0 1 Kn ROUTE From WPT 0 To WPT 1 NAV Mode RL XTE 108L Nm BRG 345 T Dist 2 51 Nm SATS Used 6 HDOP 1 4 VDOP 1 6 DGPS ...

Page 141: ...G 239T Dist 27 4 Nm XTE 0 14L Nm RTE RL From WPT 1234 To WPT 1357 Sending Causes the printer output to be turned On or Off default Print Interval Sec Allows you to control how often the print out will be sent to the printer port The default value is 60 seconds and the valid range is from 1 to 9999 seconds Format Allows you to choose either the Full or Brief formats de scribed above Bit Rate This a...

Page 142: ...5 through 10 Alarm if no data No Yes value sets the alarm to sound if no ROT input data is detected in 5 seconds Note Only IEC type approved ROT information can be used by the AIS transponder Rate of Turn messages designated by talker device ID TIROT are required Security The Security screen allows you to lock out the E key in order to keep crew members or visitors from changing settings that you ...

Page 143: ...or the MX421 GPS and Beacon receiver interface You have no control in these two ports You can not change the baud settings in its original values MX420 2 Serial I O Menu MX420 8 Serial I O Menu Time Mode and Format Control This menu item sets the method in which time is displayed on the receiver Time System Sets the time to UTC default or Local When Local is selected several parameters associated ...

Page 144: ...o No The adjusted time value is displayed in the lower window so you can verify the current time without having to leave the screen Wind The receiver will display wind information in the NAV4 screen when connected to a NMEA 0183 sensor which can provide the MWV or VWR sentence Data Input Port 1 default or 2 for MX420 2 1 default or 2 5 6 7 8 9 or 10 for MX420 8 Note Ports 3 4 are reserved for the ...

Page 145: ...r VWR sentence It is better to specify the appropriate sentence because more than one method of reporting wind may be available on the port Wpt Rte Input Uploading Waypoints into the Receiver This screen enables the input data port to receive waypoints and routes from a chart plotter PC VMS or other device to the receiver You can receive this data through any of the user NMEA 0183 input data ports...

Page 146: ...rs to send data bursts over a single narrowband radio channel by synchronizing their data transmissions to a very precise timing standard AIS is designed to operate in one of the following modes In a ship to ship mode for collision avoidance In a ship to shore mode as a means for coastal states to monitor and obtain information about a ship and its cargo As a traffic management tool when integrate...

Page 147: ...ntegrated navigation systems and radar plotting systems to provide AIS tags for radar targets The AIS data can also be logged to the ship s Voyage Data Recorder VDR for playback and future analysis UpdatedAIS messages are transmitted every few seconds to keep the information up to date Note that the ship to ship data exchange takes place automatically without any action required by the watch offic...

Page 148: ...ay use AIS to monitor the movement of hazardous cargoes and control commercial fishing operations in their territorial waters AIS data can be logged automatically for playback in investigating an accident oil spill or other event AIS is also a useful tool in search and rescue SAR operations allowing SAR coordinators to monitor the movements of all surface ships aircraft and heli copters involved i...

Page 149: ...p to ship and ship to shore AIS reports It is also possible for the VTS to broadcast the complete harbor picture to all ships in the area so the masters and pilots all share the same big picture The VTS center can assume control over the assignment of time slots for AIS messages to ensure optimum data exchange within the coverage area Special dedicated channels may be designated for local area AIS...

Page 150: ...dcasts its AIS messages and receives messages from all ships withinVHF radio range The area in whichAIS messages can be received is called the ship s cell Each ship is in this way in the center of its own communication cell The practical size of the cell can be varied according to the traffic density on the AIS channel If the number ofAIS messages begins to overload the network the ship s AIS syst...

Page 151: ... up in the same timeslot to ensure that stations always choose unoccupied slots In situations of high traffic density it may be necessary to reduce the number of ships in a communication cell as described above This enables time slots used by weak stations far away to be used also by a station nearby The AIS system applies very specific rules on how this reoccupation of timeslots is done The key t...

Page 152: ...either manually or remotely by the AIS shore station AIS Message AIS is designed to work autonomously and continuously in a ship to ship mode but the specifications provide for switchover to an assigned mode for opera tion in an area subject to a competent authority responsible for traffic monitor ing with the data transmission intervals and timeslots set remotely by the shoreside authority Altern...

Page 153: ...c System operator Safety messages are sent as needed The update rates for dynamic information will depend on the ship s status and speed according to the following schedule At anchor 3 minutes 0 14 knots 10 seconds 0 14 knots and changing course 3 3 seconds 14 23 knots 6 seconds 14 23 knots and changing course 2 seconds 23 knots 2 seconds 23 knots and changing course 2 seconds The AIS specificatio...

Page 154: ...IS transponder MX423 The MX420 Navigation System is built to meet all existing applicable international marine standards and it is designed to be compliant also to future standards through software upgrades The MX420 CDU collects and decodes AIS reports from other stations and provides a readout of information from all AIS equipped ships and shore stations Data can be viewed in text or graphic for...

Page 155: ...ture The Static Config Update setup is used to determine where the AIS Static configuration information can be updated from Two possible selections are the MKD MX420 AIS or ECDIS a PC based charting system This setting is important to determine where the configuration setup will be done and to ensure that all subsystems contain the same AIS configuration information Follow the procedure below to s...

Page 156: ...d or missing password is used an AIS Alarm is displayed and the entry will be rejected Press the Cancel alarm softkey to continue Follow the procedure below to enter the requiredAIS static information for SAAB transponder 1 Press CFG key 2 Highlight the AIS Static under the Item column 3 Press the E key to start editing the AIS Static setup 4 The AIS Connected Port 5 No will be highlighted press t...

Page 157: ...s are available under the AIS Static menu If only 10 lines are listed the MX420 may not be communicating with the transponder Verify that the AIS Connected value is set to YES and the correct transponder type is selected Display Field Descriptions AIS ECDIS PILOT LongRange Ext GPSConnected ...

Page 158: ...eed ports ECDIS Pilot and waits for their response to prepare answer back to long range system Password Level available only in SAAB transponder type selection Use the softkey to select between User orAdministrator Changing parameters related to theAIS transponder will require the administrator pass word Editing the following transponder settings below requires the admin istrator password MMSI A9 ...

Page 159: ... AIS VHF Channels Valid VHF Channels Used in AIS 1 28 2001 2005 60 88 2007 201 228 2018 2028 260 287 2060 2066 2078 2088 1001 1005 1007 2201 2207 1018 1028 2218 2228 1060 1066 2260 2266 1078 1088 2278 2287 1201 2005 1218 1228 1260 1266 1278 1287 MX421andExternalGPS Use the softkey to select between Primary and Secondary The MX421 is defaulted as the primary source of GPS data while the Ext GPS is ...

Page 160: ...LAS Height Over Keel Enter 4 digit height i e 999 9 in meters Softkey Descriptions Used to enter the administrator password to change criticalAIS transpon der setups that require the administrator password Push to send the keel depth to the transponder Used to toggle through various selections available in the field A B C D Antenna Location Antenna Offset For SAAB Transponder Type How to change tr...

Page 161: ... cursor to the MMSI number and enter the desired value 9 Move the highlight to Ship and spell out the name of the vessel up to 20 alphanumeric characters 10 Move the highlight to Call Sign and enter up to 7 characters 11 To change other setup items use the cursor key to scroll down or up and enter the number or name required or press the softkey when available 12 At the end of editing press the E ...

Page 162: ...ble ship type values 0 255 Softkey Descriptions used to toggle through various values available in the field press this softkey to send the information about the number of people on board to the transponder for broadcasting Nav Stat Icons and Descriptions Vessel underway Not Defined Vessel not commanded limited maneuverability limited by draught aground or reserved for future use Ship is anchored ...

Page 163: ...zard of pollutant category A 1 Towing 3 see right column 2 Carrying DG HS or MP IMO hazard or pollutant category 3 vessel 2 Towing and length of the tow exceeds 200m or breadth exceeds 25m 4 HSC 3 Carrying DG HS MP IMO hazard or pollutant 3 Engaged in dredging or underwater operations 5 see above 4 Carrying DG HS or MP IMO hazard or pollutant category C 4 Engaged in diving operations 5 reserved fo...

Page 164: ...isplay shows the ship s information transmitted by the AIS transponder Information such as ships s name MMSI call sign IMO ship type cargo navigation status are all configured under theAIS Static setup while the destina tion and ETA are taken from the AIS Voyage setup It also gives you an idea which GPS is being used under the GPS Source field and its antenna offset data Display Field Descriptions...

Page 165: ...n Position fix of the GPS in use GPSAnt Pos In use GPS Antenna location A B C D values see below with reference to aft of bow and port or starboard of centerline HDG Gyro reading in degrees COG Course Over Ground degrees ETA Estimated time of arrival date time ROT Ship s Rate Of Turn in degrees per minute SOG Speed Over Ground knots Destination Operator entered destination under the AIS Voyage set...

Page 166: ...sing the softkey then pressing the softkey Pressing the softkey will show the display below note the BRG range indicated on the top right corner of the display You can scroll left or right by pressing the or softkey to list other ships around you in 15 degree increments Display Field Description TGT Target number of MMSI database for quick vessel access TGT corre sponds with vessels shown on the P...

Page 167: ...essel NAME Name of remote vessel Softkey Descriptions User can choose to have a list of MMSIs displayed in 15 degrees incre ments Shift bearing search by 15 degrees left Shift bearing search by 15 degrees right User can choose to display the MMSIs by distance relative to the vessel Additional softkeys are available Shows the next 7 MMSIs Shows the previous 7 MMSIs Return to the original softkey se...

Page 168: ...sing the softkey When the number of messages exceeds 100 the oldest message will be overwritten Display Field Descriptions RECEIPT TIME Date and time the message was received SENDER MMSI MMSI of the originator of the message MODE ADDRESSED sent only to this vessel BROADCAST sent to all vessels Text Message received Softkey Descriptions press this softkey to display the next message received maximu...

Page 169: ...ta displayed in this field can be altered by pressing the E key then press the softkey repeatedly to toggle through 4 choices namely Auto Se lect ChannelA Channel B or BothA B Default value isAuto Select MODE This field shows whether the message is to be sent to a specific MMSI addressed or to all broadcast Pressing the softkey will select eitherADDRESSEDorBROADCAST TGT This field gives the short ...

Page 170: ...adcast on both channels This softkey toggles the output mode betweenADDRESSED or BROAD CAST When addressed is selected the MMSI number will be displayed automatically when the TGT number is specified Pressing this softkey sends the text message to the transponder for broadcasting Show more softkeys Pressing this key sends the number of people specified in theAISVoyage setup to the transponder Pres...

Page 171: ...play allows you to scroll through the safety messages you transmitted under theAIS 4 TX SAFETYMSG display Display Field Description Transmit Time Time the message was transmitted Mode Whether it was addressed or broadcast Message Field Softkey Description View next message View previous message ...

Page 172: ... corner coordinates of the region Zone size Date and time tag These parameters are stored in the memory bank of theAIS transponder and can be displayed in the MX420 AIS CDU Up to eight regions can be stored by the transponder The AIS constantly checks the stored region boundaries and com pares it to its own position If the distance to the region boundaries is greater than 500 miles from its own po...

Page 173: ...hannel is in use POWER Power level High or Low NE LAT NE LON SW LAT SW LON Northeast and Southwest corner coordi nates of the region area ZONESIZE in nautical miles Updatedat Date and time tag of the regional parameters Softkey Descriptions softkey used to display information for the next region softkey used to display information for the previous region request new regional parameters from the tr...

Page 174: ... pop up a message window accompanied by an audio alarm When in Ext Appl mode the external application will need to respond to the MX420 AIS with permission to reply To look at the long range list press theAIS key several times until it shows theAIS 7 Long Range screen as shown below Display Field Descriptions ID Query index number 0 99 TIME Time when the long range message was received HH MM MMSI ...

Page 175: ...rma tion press this key to show the previous page of information this softkey becomes available only when Long Range inquiry is received otherwise it will not be there To reply to long range interrogation in manual mode do the following 1 Press the AIS 9 YZ key several times until the AIS 7 screen appears 2 Press the E key to show the softkeys 3 Press softkey Apop up window requesting for an ID nu...

Page 176: ...onder Total loading should not be more than 80 on each channel for efficient operation Display Field Descriptions Age Number of seconds when last message was received 1 999 Mode The AIS transponder operation can either be autonomous or assigned Load AIS receiver throughput 0 100 Total MMSIs Total number of vessels using theAIS system 0 500 Note This display is available only under SAAB transponder...

Page 177: ... U se A IS B ackup D G N S S In U se B eaco n A IS B ackup D G N S S In U se M sg 1 7 A IS B ackup G N S S In U se A IS P rim ary E xternal S O G C O G In U se A IS B ackup S O G C O G In U se A IS H D G D ata In U se A IS R O T D ata In U se A IS O ther R O T S o urce In U se A IS C hannel M anagem ent P aram eters C hanged A IS S eco nd ary E xternal D G N S S In U se A IS S eco nd ary E xternal...

Page 178: ... default power and transmitter A B modes Please detach this page and store it in a safe place for security You will need the administrator password again when changing any of the configuration items that controls the transponder or when assigning a new administrator password Note If you decide to change the default administrator password make sure you use a password that you will not forget You sh...

Page 179: ...the current password To bring up the lowercase letters press the key with the desired letter and hold it down for about 3 seconds Once the first letter is in lowercase the succeeding letters will be in lowercase You may have to press the numeric keys once or twice to get the desired letter i e to get the letter i press the 3 key 3 times The cursor will advance to the next character automatically w...

Page 180: ...p To zoom in press the key Softkey Description This softkey enables the user to quickly view information for the next target In addition to the ship identification data the range and bear ing from your ship to the target is also calculated This softkey enables the user to quickly view information for the previ ous target This softkey enables the user to quickly access information for a spe cific t...

Page 181: ...168 Version 2 0 Operator s Manual Automatic Identifaction System ...

Page 182: ... MVS WAKE ENIWETOK 1960 ENW ZANDRIJ ZAN Appendix B Datum List The receiver supports more than 100 datums Table A 1 provides the names and abbreviations for these datums Table A 1 Datum Names and Abbreviations WGS 84 W84 WGS 84 OFFSET wpo WGS 72 W72 EUROPEAN 1950 EUR NAD 27 CONUS NAS NORTH AMERICAN 1983 NAR ADINDAN ADI AFGOOYE AFG AIN EL ABD 1970 AIN ANNA 1 ASTRO 1965 ANO ARC 1950 ARF ARC 1960 ARS ...

Page 183: ...170 Version 2 0 Operator s Manual Datum List ...

Page 184: ...ng available beacon stations from the maritime authority in the country you are in MX Marine assumes no responsibility for the accuracy of the information which follows it is only provided as a matter of convenience ID 700 CORNY POINT 12º00 S 131º00 E 316 0kHz 200 baud ID 710 HORN ISLAND 10º36 S 142º18 E 320 0kHz 200 baud ID 702 INGHAM QLD 18 33 20 S146 18 21 E 306 0kHz 200 baud ID 708 KARRATHA 20...

Page 185: ...Hz 100 baud ID 463 ILHARASA 26 S43 06 W 315 0kHz 100 baud MOELA 24 02 51 9 S6 15 42 8 W 305 0kHz 100 baud ID 462 RIOGRANDE 32 08 54 1 S2 06 11 7 W 290 0kHz 100 baud ID 464 SANTA MARTA 28 36 16 2 S 48 48 50 1 W 310kHz 100 baud ID 466 SAO MARCOS 02º29 N 44º18 W 300 5kHz 100 baud SÃOTOMÉ 22 02 32 3 S 41 03 10 7 W 300 0kHz 100 aaud ID 465 BULGARIA CAVARNA 43º25 N 28º22 E 300 0kHz Range 100 n m CANADA ...

Page 186: ...REF2 317 ST JEAN SUR RICHELIEU 46º19 N 73º18 W 308 0kHz 100 baud ID 929 REF1 312 REF2 313 WIARTON 44º42 N 81º08 W TBAkHz 100 baud ID 918 REF1 310 REF2 311 EAST COAST Planned HALIFAX 44º40 N 63º36 W TBAkHz 200 baud ID 938 REF1 328 REF2 329 EAST POINT 46º27 N 61º58 W 314 0kHz 100 baud ID 937 REF1 330 REF2 331 RIVIERE DU LOUP 47º45 N 69º36 W TBAkHz 100 baud ID 926 REF1 318 REF2 319 MOISIE 50º12 N 66º...

Page 187: ...aud ID QH REF1 606 REF2 607 DA SAN SHAN 38º52 N 121º50 E 301 5kHz 200 baud ID DS REF1 602 REF2 603 WANG JIA MAI DAO 36º04 N 120º26 E 313 5kHz 200 baud ID MD REF1 614 REF2 615 BAO HU 20º00 N 110º56 E 310 5kHz 200 baud ID BH REF1 652 REF2 653 SHANGHAI xxºxx N xxºxx E XXX XkHz 100 baud ID REF1 WESTERN HEAD 43º59 N 64º39 W 296 0kHz 100baud ID 935 REF1 334 REF2 335 CAPE RACE 46º39 N 53º04 W 288 0kHz 10...

Page 188: ... E 290 5kHz Range 135 n m KUOPIO 63º00 N 27º30 E 295 0kHz Range 38 n m MARJANIEMI 65º02 N 24º35 E 314 5kHz Range 135 n m PORKKALA 59º58 N 24º23 E 293 5kHz 100 baud ID 400 REF1 600 REF2 PORVOO 60º12 N 25º50 E 292 5kHz Range 135 n m MÄNTYLUOTO 61º36 n 21º28 E 287 5kHz 100 baud ID 401 REF1 601 REF2 OUTOKUMPU 62º41 N 26º01 E 304 5kHz REF2 16 Stations Planned DENMARK HAMMERODDE 55º18 N 14º46 E 289 5kHz...

Page 189: ...14º16 W 291 0 kHz 100 baud ID 415 SKARDSFJARA 63º31 N 17º59 W 287 0 kHz 100 baud ID 416 IRELAND LOOP HEAD 52º34 N 09º56 E 293 0kHz Range 150 n m MIZEN HEAD 51º27 N 09º48 E 284 0 kHz 100 baud ID 430 REF1 660 TORY ISLAND 55º16 N 08º15 E 288 5 kHz 47º39 N 03º31 W 309 0kHz Range 97 n m LES BALEINES 46º15 N 01º34 W 305 0kHz Range 97 n m LES SABLES 46º31 N 01º48 W 307 0kHz Range 108 n m CAPE FERRET 44º3...

Page 190: ...known 45º31 N 141º56 E 295 0kHz 100 200 baud ID REF1 REF2 40º00 N 144º18 E 309 0kHz 100 200 baud ID REF1 REF2 43º22 N 140º28 E 316 0kHz 100 200 baud ID REF1 REF2 42º58 N 144º23 E 288 0kHz 100 200 baud ID REF1 REF2 41º25 N 140º05 E 309 0kHz 100 200 baud ID REF1 REF2 41º26 N 141º28 E 100 baud ID 435 REF1 670 WICKLOW HEAD 52º58 N 06º00 E 306 5 Range 150 n m ITALY C FERRO 21º09 N 09º31 E 298 0kHz Rang...

Page 191: ...LMEN 71º06 N 23º59 E 309 5kHz Range 162 n m UTSIRA 59º18 N 04º52 E 313 0 kHz 100 baud ID 505 REF1 785 UTVAER 61º02 N 04º30 E 314 0 kHz 100 baud ID 507 REF1 787 SVINOEY 62º19 N 05º16 E 302 5kHz 100 baud ID 508 REF1 788 REF2 HALTEN 64º10 N 09º24 E 313 5kHz 100 baud ID 510 REF1 790 REF2 SKOMVAER 67º24 N 11º52 E 301 0kHz 100 baud ID 513 REF1 793 REF2 33º05 N 139º51 E 302 0kHz 100 200 baud ID REF1 REF2...

Page 192: ... 308 5kHz 100 baud ID 518 REF1 REF2 BELLSUND 77º23 N 13º57 E 302 5kHz 100 baud ID 523 REF1 REF2 POLAND DZIWNOW 54º01 N 14º44 E 283 5kHz 100 baud ID 481 REF1 REF2 JAROSLAWIEC 54º33 N 14º44 E 295 0kHz Range 49 n m ROZEWIE 54º49 N 16º33 E 301 0 kHz 100 baud ID 482 REF1 REF2 PORTUGAL Planned CARVOEIRO 39º22 N 09º24 W REF2 LISTA 58º06 N 06º34 E 304 0kHz 100 baud ID 503 REF1 783 REF2 SKLINNA 65º12 N 10º...

Page 193: ...97 n m CABO SALOU 41º03 N 01º10 E 291 0kHz Range 97 n m CABO SAN SEBASTIAN 41º53 N 03º12 E 313 5kHz Range 97 n m CALA FIGUERA 39º27 N 02º31 E 294 5kHz Range 97 n m CASTELLON 39º58 N 00º01 E 286 0kHz Range 97 n m ESTACA DE BARES 43º47 N 07º41 W 293 0kHz Range 97 n m LA ENTALLADA 28º13 N 13º56 W 284 0kHz Range 111 n m MAHON 283 5kHz Range 170 n m GORKOVSKY 59º50 N 30º10 E 288 5kHz Range 54 n m KANIN...

Page 194: ... 100 baud ID 466 BJURÖKLUBB 64º29 N 21º34 E 311 5kHz 100 baud Range 130 n m HÅLLÖ 58º20 N 11º13 E 297 0kHz 200 baud ID 467 UNITED KINGDOM ENCRYPTED SIGNALS ST CATHERINE S POINT 50º34 N 01º18 W 293 5kHz 100 baud ID 440 REF1 680 REF2 LIZARD 49º57 N 05º12 W 284 0kHz 100 baud ID 441 REF1 681 39º52 N 04º18 E 293 0kHz Range 97 n m MALAGA 36º43 N 04º25 W 299 0kHz Range 97 n m PUNTA ROSCA 28º01 N 16º33 W ...

Page 195: ...E 310 5kHz 100 baud ID 448 REF1 688 REF2 Planned 16 Sta tions UNITED STATES ANNETTE ISLAND AK 55º04 N 131 37 W 323KHz 100 baud ID 889 REF1 278 REF2 279 Message TYPE 9 COLD BAY AK 55 11 N 162 42 W 289 KHz 100 baud ID 838 REF1 296 REF2 297 Message TYPE 9 GUSTAVUS AK 58 25 N 135 42 W 288 KHz 100 baud ID 892 REF1 284 REF2 271 Message TYPE 9 PIGEON POINT CA 37 11 N 122 23 W 287 KHz 100 baud ID 883 REF1...

Page 196: ...KHz 200 baud ID 863 REF1 None REF2 None Message TYPE 9 ENGLISH TURN LA 29 53 N 089 56 W 293 KHz 200 baud ID 814 REF1 028 REF2 029 Message TYPE 9 CHATHAM MA 41 40 N 069 57 W 325KHz 200 baud ID 802 REF1 004 REF2 005 Message TYPE 9 BRUNSWICK ME 43 53 N 069 57 W 316KHz 100 baud ID 00 REF1 000 REF2 001 Message TYPE 9 CHEBOYGAN MI 45 39 N 084 28 W 292 KHz 200 baud ID 836 REF1 112 REF2 113 Message TYPE 9...

Page 197: ... 200 baud SiteID 804 REF1 008 REF2 009 Message TYPE 9 WILDWOOD NJ 38 57 N 074 51 W 301 KHz 200 baud ID 111 REF1 038 REF2 039 Message TYPE 9 MONTAUK POINT NY 41 04 N 071 52 W 293 KHz 100 baud ID 803 REF1 006 REF2 007 Message TYPE 9 YOUNGSTON NY 43 14 N 078 58 W 322 KHz 100 baud ID 839 REF1 118 REF2 119 Message TYPE 9 SALLISAW OK 35 22 N 094 49 W 299 KHz 200 baud ID 866 REF1 None REF2 None Message T...

Page 198: ...xpand or provide any more information than what is provided in this manual If you should enable these screens they will be turned off automati cally the next time power is cycled on the MX420 AUX7 Unit Information Self Test When the Engineering Display is active the AUX7 screen adds one line of detail to display the engineering level that is turned on In addition you can press the E function key a...

Page 199: ... Fail if it doesn t Then the CDU will conduct a Keylight test You may need to dim the lights in the room or shade the keyboard so that you can see the backlights behind the function and softkeys Observe that the keypad backlights go through their full range of illumination Press OK if it varies correctly or Fail if it doesn t Upon completion of the above tests a Test Results screen will be display...

Page 200: ...oints and configuration settings A cold start sets the CDU back to factory default settings Perform this procedure if the CDU becomes non re sponsive fails one of the self tests described above or starts acting very unusually To perform the cold start 1 Turn the CDU off There are three methods you can use A Press the On Off function key and select the Yes softkey this causes a software shut down o...

Page 201: ...under 32 is considered troubled and the GPS receiver will not use that satellite in the navigation solution Troubled satellites tend to cause position jumps and greatly reduce the accuracy of the GPS po sition fix The EL AZ and STA values represent the satellite s Elevation and Azimuth and Almanac Status respectively Low signal to noise S N quality numbers may be an indication of local interferenc...

Page 202: ...FG Position The current HDOP and VDOP values are given in the upper window MX Ant Reset CSI Reset Tools Special tools are available in the MX420 CDU that can be used to reset the GPS and Beacon engines in the MX421 Use them only in extreme cases when the GPS or beacon receiver fails or takes too long to lock on The MXAntReset softkeywillclearthesatellitealmanacmemory of the GPS engine and reset al...

Page 203: ...ts 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 2 or MX 420 8 SLAVE UNIT BRN NMEA1 IN A BRN WHT NMEA1 IN b PRPL NMEA1 OUT A PRPL WHT NMEA1 OUT B SHIELD No Antenna Connected SHIELD PRPL WHT NMEA1 OUT B PRPL NMEA1 OUT A BRN WHT NMEA1 IN B BRN NMEA1 IN A The interface between the two units takes place over a high speed data link The master unit must be connected to th...

Page 204: ...iven time DGPS Setup Only one unit can make changes at any given time Dual Control Alarms Man Over Board Only one unit can make changes at any given time The items detailed in Table E 2 are independently controlled at the individual CDU heads Table E 2 Independently Controlled Functions Data Base Comments Plotter Setup Navigate Displays GPS Engineering Display Position Displays Dual Control Setup ...

Page 205: ...tegrity Monitoring The Dual Control Integrity Monitoing IM feature is an optional fea ture wherein two independently navigating MX420 8 units connected as a master slave configuration can compare their position solutions The unit that has the best position accuracy becomes the controlling unit Its Position Speed and Course calculations are used for display navigation and data output The basic requ...

Page 206: ... output NMEA 0183 records on the data ports to test and demonstrate other devices such as autopilots chart plotters and radars In the CFG Operation screen activate the Demonstration Mode by selecting Yes Follow Active Route causes the CDU to use the route loaded in RTE1 screen Rhumb Line causes the CDU to follow the bearing you input in this screen under Demonstration COG Demonstration SOG causes ...

Page 207: ... press E Next press the NAV function key then the E key Press the Reset XTE softkey Press the E key This resets your cross track error and up dates the active route in RTE1 with the adjusted position Now just use the CDU as you normally would You can output NMEA 0183 data records to other devices Be careful however other instru ments will interpret the data as completely valid So don t run the Dem...

Page 208: ... satellite rise times set times angles of elevation etc Almanac data is valid for 181 days ALTITUDE The height of the antenna over mean sea level AMBIENT Surrounding or encompassing environment ANTENNAHEIGHT The height over the waterline in which the antenna is installed This value is used in 2D mode only ATMOSPHERICPRESSURE SeeBAROMETRICPRESSURE APPARENTWINDANGLE AWA The angle of the wind as meas...

Page 209: ...lockwise direction from the north point in the hori zon to the satellite point in the horizon BAUD Transmission rate unit of measurement for binary coded data bit per second BEARING The direction of one terrestrial point from another expressed as angular distance from North clockwise through 360 BIT Short form of Binary Digit The smallest element of data in a binary coded value bps Bits Per Second...

Page 210: ...RSE ACQUISITIONCODE COARSE ACQUISITION C A CODE The NAVSTAR satellite signal that may be accessed by civilian members of the user community COEFFICIENTOFEARTHFLATTENING The value F that quantitatively describes by how much the earth s ellipsoid semimajor axis A is shorter than the semiminor axis B F A B A COG SeeCOURSEOVERGROUND COMPASS BIAS Angle of misalignment between the steering compass and t...

Page 211: ...ual course line track as defined in the active route CURSOR A flashing rectangle superimposed on a character position in the display window indicating that a character may be entered in that position or that the existing character may be changed via the keyboard DATUM The framework on which the coordinates used to define position on the Earth s surface are based In the navigator a datum is de fine...

Page 212: ...ction signals from an external reference GPS CDU monitor DILUTIONOFPRECISION DOP A figure of merit for the quality of GPS derived position and clock bias estimates based on the geometry of the selected satellite con stellation The smaller the DOP the less the magnification of the range measurement error into position and clock bias errors Gen erally the more spread out the satellites the lower the...

Page 213: ...h axis is shorter than the east west axis oblate spheroid ENTER To store data in the memory of the navigator EPHEMERIDES Singular EPHEMERIS Tabulations of accurate data describing celestial position and health of the satellites over a 24 hour period The data is uploaded to the satellites every 12 hours ETA Estimated Time of Arrival Calculated on basis of the distance to the destination and the cur...

Page 214: ...s feature should be used only with the greatest care FORCEUNHEALTHY A feature of the navigator that permits the operator to inhibit a satellite position update even though the quality of the data from that satellite apparently is acceptable FUNCTION A specific operational capability of the navigator FUNCTIONKEY A key on the front panel of the navigator that selects a specific function GEODETIC Ass...

Page 215: ...sion on a data link GMSK Gaussian Minimum Shift Keying GFSK using BT products and modulation index which optimizes the modulated signal GNSS Global Navigation Satellite System Acommon label for satellite navigation systems such as GPS and GLONASS GLOBALPOSITIONINGSYSTEM GPS The NAVSTAR Global Positioning System which consists of or biting satellites a network of ground control stations and user po...

Page 216: ... south HDOP Horizontal Dilution of Precision An indicator of the two dimensional accuracy in position latitude and longitude See DILUTION OF PRECISION HEADING The direction in which the vessel is pointed expressed as angular distance from north clockwise through 360 degrees HEADING should not be confused with COURSE The HEADING is con stantly changing as the vessel yaws back and forth across the c...

Page 217: ...ed log and compass to pass to the navigator processor IONOSPHERE Alayer of ionized air about 80 kilometers 50 miles above the earth s surface IONOSPHERICINTERFERENCE Distortion imparted to a broadcast radio signal as it passes through the ionosphere ITDMA Incremental Time Division Multiple Access Access protocol for pre announced transmissions of temporary or non repeatable character It is also us...

Page 218: ...he algorithm The calculated positions may therefore differ from positions obtained when using a dedicated Loran C receiver by several hundred meters MAGNETICDEVIATION The error introduced into the steering compass reading by nearby ferrous metal mass distorting the earth magnetic flux field surround ing the compass MAGNETICHEADING Direction as sensed by the steering compass in relation to mag neti...

Page 219: ...ther meridians are refer enced MMSI MOTIONDYNAMICS Characteristics of changes in attitude and location of a moving object according to its application and or environment For ex ample vessels at sea in rough waters may have low forward veloc ity but high rate short term changes in attitude due to yaw pitch and roll NAVIGATIONSOLUTION Themathematicalderivationofnavigationcomponents forexample speed ...

Page 220: ...he choice is called parity convention either odd or even parity convention Under odd parity convention rule the binary coded message has the parity bit set to make up an odd number of mes sage bits Under even parity convention rules the binary coded message has the parity bit set to make up an even number of mes sage bits P CODE Alimited access signal broadcast by the NAVSTAR satellites cur rently...

Page 221: ...E Range that includes errors due to clock offset PSP Presentation System Port A communication port on the AIS transponder used as an interface to external systems i e the MX420 PULSESPEEDSENSOR Speed log whose speed output signal is defined by a pulse rate output RANGERESIDUAL The difference between the expected satellite range and the mea sured satellite range for the last measurement taken from ...

Page 222: ...rection values are transmitted to user GPS CDUs for use as corrections to their own GPS position solu tions RESET To return stored values to either the default value or zero in memory RHUMBLINE The course of a vessel that keeps a constant compass direction drawn as a line on a chart or globe and cutting across all meridians at the same angle A rhumb line is a straight line on a Mercator chart RHUM...

Page 223: ...itted electromagnetic energy from a GPS satellite whose time of arrival is measured by the navigator to calculate the posi tion of the navigator antenna SELECTIVEAVAILABILITY S A A system whereby the accuracy of GPS is reduced S A is con trolled by the U S Department of Defense SEMIMINORAXIS The distance from the center of the earth s ellipse to the ellipse surface as measured along the polar axis...

Page 224: ...ed Time Division Multiple Access An access protocol which allows autonomous operation on a data link while automatically resolving transmission conflicts SPACESEGMENT The orbiting satellite part of the Global Positioning System SPEEDOVERGROUND Speed in relation to the sea bed SPHEROID SeeELLIPSOID STEERINGCOMPASS The compass used for navigation It may be a direct reading com pass from which the he...

Page 225: ...e showing the past movements of the vessel TRANSDUCER A device that transfers power from one system to another in the same or in different form See also SENSOR TRIPLOG In the navigator an easily resetable sum log that accumulates the distance sailed over ground based on the GPS signals See also GPSLOG TRUEHEADING Direction in relation to true north True heading is compass head ing corrected for MA...

Page 226: ...d accuracy expressed as the radius of a circle around the calculated displayed position The uncertainty is expressed in meters or feet The calculation of uncertainty is based on the HDOP value UNIVERSALTIMECOORDINATED UTC Greenwich mean time corrected for polar motion of the Earth and seasonal variation in the Earth s rotation UPDATE SeePOSITIONUPDATE UTC SeeUNIVERSALTIMECOORDINATED UTM SeeUNIVERS...

Page 227: ... with an elevation angle 5 VMG SeeVELOCITYMADEGOOD VTS Vessel Traffic Service WAYPOINT A point usually along the track of the vessel or vehicle whose position coordinates may be stored in the navigator The point position is the basis for the heading range heading to steer esti mated time of arrival and steering display calculations WAYPOINTCLOSUREVELOCITY WCV The speed the vessel is moving in the ...

Page 228: ...shift The resulting difference in position will normally be 0 01 minute of longitude which will not be noticeable on charts of scale 1 50 000 or smaller You may thus use theWGS 84 Plus Offset datum with charts marked with a WGS 72 offset All charts will eventually be converted to WGS 84 datum X TRACKERROR XTE SeeCROSSTRACKERROR 1PPS One Pulse Per Second A timing signal generally provided by GNSS r...

Page 229: ... errors and if so where and what are they Be sure to reference the title and identification number of this manual Operator s Manual P N 3508 102 70040 and include your name address and telephone number We look for ward to finding out how we can improve our information services All of your comments and suggestions become the property of MX Marine Please send them to MXMarine ADivision of NAVICO Inc...

Page 230: ...___________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ ____________________________________________________________________...

Page 231: ...Place Stamp Here ADivision of NAVICO Inc 23868 Hawthorne Blvd Suite 201 Torrance CA 90505 USA ...

Page 232: ...TED IN ANY EVENTTOREPAIRORREPLACEMENTANDREIMBURSEMENTFORCOSTS ASSOCIATED WITHTHE RETURN OFTHE DEFECTIVE PRODUCTAS PRO VIDED HEREIN AND SUCH REMEDY SHALL BE THE BUYER S ENTIRE AND EXCLUSIVE REMEDY This warranty does not apply to failure of any equipment not sold to Buyer by Seller or to any Product which has been subjected to misuse lightning strike accident or improper installation maintenance or ...

Page 233: ...esentative ADivision of NAVICO Inc 23868 Hawthorne Blvd Suite 201 Torrance CA90505 USA Attn Field Service Phone 310 791 8213 Fax 310 791 6108 E Mail info mx marine com You will need to know your unit s model serial number and software version when contacting Leica for service Record the serial number and software version below Model number ____________________ Serial Number _____________________ S...

Page 234: ... MX423 MX531 MX535 models Users user for MX423 SAAB R3 transponder only Note For security reasons cut out this page and store in a safe place after installa tion and setup You need the administrator password to change critical AIS Staticsettings ...

Page 235: ......

Page 236: ...MX Marine US 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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