Nav6500/6510 Frequently Asked Questions
1 Question: Answer: 2 Question: Answer: 3 Question: How many waypoints can I store in my NAV6500/NAV6510 receiver? You can store 500 waypoints. How many routes can I save in my NAV6500/NAV6510 receiver? You can save 25 routes with up to 50 legs. How do I adjust the contrast in my NAV6500/NAV6510 receiver? 1. Press the AUX soft key to access the auxiliary menu screen. 2. While General Setup is highlighted in the auxiliary window, press enter to access the window at right, containing the contrast option. 3. Use the cursor key to highlight contrast and press enter. A bar graph appears. 4. Use the right/left arrows on the cursor key to adjust the contrast to a comfortable level, and then press enter to confirm. 5. Follow the instructions at the bottom of the screen, pressing esc twice to back out of the auxiliary screen. How many NAV screens does my NAV6500/NAV6510 have? The receiver has four different NAV screens: SAT STATUS, MAP, NAV 1, and NAV 2. From any NAV screen, press the nxt scrn soft key repeatedly to cycle through the four NAV screens. What information can I get from the satellite status screen? This screen displays information relating to the satellites being tracked, searched for, or used in the position fix. A bar graph shows the signal quality of the satellites being tracked. The satellite identification numbers are shown along the bottom of the graph, and the signal strength is shown along the left edge. The longer the bar, the stronger the signal of the corresponding satellite. How do I save the cursor position as a waypoint? From any NAV screen, press the waypst softkey, use the cursor key to move the cursor arrow to the point on the map at which you wish to create a waypoint, and press the create softkey. The create waypoint window appears. You can change the waypoint name, waypoint icon, coordinates, description, or you can accept the default values. How can I save the current position as a waypoint? From any NAV screen, press the waypts softkey. The create waypoint window appears. Press the GPS softkey. The current computed position is entered into the coordinates field. You may modify any of the four fields in the create waypoint window. Press done to accept the waypoint. How do I delete a waypoint from the waypoint list?

Answer:

Question: Answer:

Question:

From any NAV screen press waypts.list. Use the cursor key to highlight the waypoint in the list you wish to delete and press ENTER. The delete waypoint confirmation screen appears. Highlight yes to delete or no to exit and press enter. How do I delete all waypoints in the waypoint list? From any NAV screen press waypts, list. Press the delete all softkey. The delete all waypoint confirmation screen appears. Highlight yes to delete or no to exit and press enter. How do I delete a waypoint from the map screen? From the map screen use the cursor key to move the cursor to an existing waypoint. The delete softkey will become active and the waypoint information will be displayed in the information window. Press the delete softkey. A delete confirmation window will appear. Highlight yes to delete the waypoint or no if you change your mind and press enter. How do I view a waypoint from the waypoint list? From any NAV screen, press waypts, list. Use the cursor key to highlight the waypoint you wish to view and press the view softkey. The display returns to the map screen, with the selected waypoint in the center of the map, under the cursor. How do I delete a waypoint from the map screen in my NAV6500/NAV6510? From the map screen use the cursor key to move the cursor to an existing waypoint. The delete softkey will become active and the waypoint information will be displayed in the information window. Press the delete softkey. A delete confirmation window will appear. Highlight yes to delete the waypoint or no if you change your mind and press enter. How do I delete a GOTO route in my NAV6500/NAV6510? Press GOTO from any screen except the auxiliary and full-map screens. The map screen appears. Press esc. The exit from GOTO confirmation window appears. Highlight yes and press enter. The GOTO is deleted. How do I deactivate a route in my NAV6500/NAV6510? From any NAV screen, press the routes, list softkey. Use the cursor key to highlight the activated route that you wish to deactivate and press the deactiv softkey. The arrow to the left of the route number in the list disappears and the route has been deactivated. The display remains on the route list screen. Press esc twice to exit the routes function. How can I remove a waypoint from a route in my NAV6500/NAV6510? 1. From any NAV screen, press routes, list softkey. 2. Use the cursor key to highlight the route in which you wish to delete a waypoint and press enter. 3. To edit the active route a shortcut is to press routes, edit. Use the cursor key to place the cursor over the waypoint in the route that you wish to remove. 4. Press the remove softkey. The waypoint is removed from the route, however it continues to exist as a waypoint in the waypoint list and on the map.

5. Press done to exit route edit. How do I change the time format from 24 hours to 12 hours in my NAV6500/NAV6510? Press the aux softkey, highlight general setup using the cursor key, and press enter. Highlight time format and press enter to display a window with the options 24, 12. Use the cursor key to select 12 hours and press enter. Press esc to exit. What is the default time format in my NAV6500/NAV6510? 24 hours. List all the languages supported by my NAV6500/NAV6510? The receiver supports five languages: English, Italian, French, German, and Spanish. How do I change the language in my NAV6500/NAV6510? Press the aux softkey, highlight general setup using the cursor key and press enter. Highlight language, press enter and a window opens listing the languages. Use the cursor key to select one and press enter. Press esc to exit. How do I change the co-ordinate system from deg/min/sec to deg/min/fractions? Press the aux softkey, use the cursor key to highlight navigation setup, and press enter. Use the cursor key to highlight coordinate system, and press enter. Use the cursor key to highlight the desired coordinate system and enter to set. What is the difference between deg/min/sec and deg/min/fractions? The important difference between deg/min/sec and deg/min/fractions is that there are 60 seconds in one minute of latitude or longitude (the seconds value will always be between 00 and 59), whereas fractions of a minute are expressed in decimal format (from.00 to.99, or.000 to.999). What is the default co-ordinate system in my NAV6500/NAV6510? The default setting is: latitude/longitude, ddd.mm.mm How can I change the map datum in my NAV6500/NAV6510? Press the aux softkey, use the cursor key to highlight navigation setup and press enter. Use the cursor key to highlight map datum and press enter. Use the cursor key to highlight the desired map datum and enter to set. How do I change the north reference from true north to magnetic north? Press the aux softkey, highlight navigation setup using the cursor key, press enter, highlight north reference using the cursor key, and press enter. Use the cursor key to highlight auto mag. and enter to accept. How do I change the units of measurement from miles to kilometers? Press the aux softkey, use the cursor key to highlight CDI/units/alarms and press enter. Use the cursor key to
highlight distance units and press enter. Use the cursor key to select kilometers and press enter. 26 Question: How do I change depth units from feet to fathoms? Press the aux softkey, use the cursor key to highlight CDI/units/alarms and press enter. Use the cursor key to highlight depth units and press enter. Use the cursor key to select fathoms and press enter. Press esc to exit.
How do I clear the track in my NAV6500/NAV6510? Press the aux softkey, use the cursor key to highlight track history and press enter. Use the cursor key to highlight clear track memory and press enter. Use the cursor key to select yes or no and press enter. Press esc to exit. What is the difference between total memory reset and GPS memory reset? Total memory reset is used only if you wish to erase the last completed position, time, date, and all user-entered information, including all waypoints, routes, track, and setup. When total memory reset is executed, the auxiliary functions are reset to their default values. GPS reset clears only the last computed position, time, and date. All other memory remains intact. How do you reset the memory? Press the aux softkey, use the cursor key to highlight memory reset and press enter. Use the cursor key to highlight total memory reset or GPS reset only and press enter. A confirmation screen appears. Highlight yes and press enter and the unit will turn off after a few seconds. Turn the unit on again to continue. What is MOB? How do I activate MOB in my NAV6500/NAV6510? The MOB(Man Overboard) function allows you to instantly create a GOTO route to the position at which you press the GOTO key and MOB softkey. Press GOTO from any screen except the auxiliary and full-map screens. The map screen appears. Press the MOB softkey. A GOTO MOB has been created for the position that you pressed the MOB softkey. My GPS receiver does not turn on. How can I resolve this problem? 1 The receiver may not have been hooked up correctly to external power, or the external power source is not working. 2. Check the connections, and make sure the external power source is working. 3. The power supply used or the circuit breaker that the unit is connected to should be rated for at least 0.5A at 12V for the NAV 6500 or 1.0A at 12V for the NAV 6510. 4 Press the power key. Why is my GPS receiver is not computing its position fix? 1. Make sure that the antenna has a clear and unobstructed view of the sky. 2. Check the antenna connections. Make sure the coaxial cable is firmly secured to the back of the unit. Check along the length

of the cable to make sure it is not cut. With a voltmeter, you may also measure the voltage output from the unit to the antenna, which should be 5 0.25 VDC between the center conductor and the shield of the TNC connector. (You need to measure across a 100ohm resistor for correct reading.) 3. Have you moved more than 300 miles with the receiver off since your last position fix? If so, the receiver may need to be reinitialized. 4. Check UTC date and time. If it is wrong, reenter it under auxgeneral setup. 5. If the receiver status on any of the NAV screens is no GPS, turn the unit off and on. 6. If none of the above works, do a GPS reset? Select memory reset under aux and execute the GPS reset only. My GPS display is frozen and the keypad is not responding. What can I do? Disconnect the power and wait for the receiver to turn off. Reconnect power and turn the power back on. Position coordinates on my GPS receiver do not match the location on the map? What can I do? Make sure that your receiver is set up to use the same datum as your map. Why doesnt my GPS receiver recognize the C map-card? What can I do? 1. Make sure the C-card is inserted all the way into the C-card slot and locked in place. 2. Check the C-card contacts to make sure they are clean. If dirt is collected on the gold contacts, use a soft dry cloth to wipe away the dirt. What is the size of my NAV 6500/6510 GPS? 6-inchesx 8-inches x 2.5-inches, not including antenna (15.2 cm x 20.3 cm x 6.4 cm) What is the LCD display dimension for my NAV 6500/6510 GPS? 6inches measured on the diagonal What is the operating and storage temperature for my NAV 6500/6510 GPS? Operating 32 to 122 (0 to 50C) F F C Storage -40 to 167 (-40 to 75 F F C C) How much time does it take for the first fix in my NAV 6500/6510 GPS? Cold start*: less than 1 minute Warm start*: 30 seconds Warm start: the receiver has obtained a position fix within the last two hours. Cold start: the receiver has been idle for two hours or longer.

What is BRG?

BRG (bearing) is the direction of a point {waypoint or cursor position} in relation to a boat or another point, as measured in degrees from north in a clockwise direction. The receiver uses either true north or magnetic north, as selected in the setup menu. The illustration shows a simple compass rose with the eight cardinal directions noted with their bearing. Explain the data term COG? Course over Ground (COG) is the direction of movement expressed as bearing. If a boat is pointing exactly north (0 ) and there are no other factors affecting its travel, the COG would be 0 , but that is rarely the case. Water currents and wind can affect the course the boat is taking. If there is a current passing from left to right across the boat (90 ) the COG would change even though the bow of the boat is still pointing north. COG is measured in degrees with north being 0 Define CTS? CTS (Course to Steer) is the optimum direction a boat should be steered to efficiently make headway back to the course line while also proceeding toward the destination waypoint. It is a "compromise" course bearing that projects from your current position to a point (B1) on the course line mid-way between a point (B2) perpendicular to your position and the current destination waypoint (B). What is the definition for the data term DST? DST (distance to go) to an active waypoint, or the distance between two waypoints in a route leg. What is datum? Datum refers to the theoretical mathematical model of the earths sea-level surface. Map makers may use a different model to chart their maps so positions will differ from one datum to another. The datum for the map you are using can be found in the legend of the map. What is magnetic north? Magnetic north is the direction toward the north magnetic pole from the observers position. What is a reverse route? A reverse route duplicates an existing route, but in reverse order. What is true north? True north is the direction to the geographical north pole from an observers position. The north direction on any geographical meridian. How do I get sunrise/sunset and lunar information? Press the aux softkey, use the cursor key to highlight calculator and press enter. Use the cursor key to highlight sunrise/sunset lunar and press enter. Highlight location and press enter to access the find waypoint function which allows you to enter the name of a waypoint.

Troubleshooting

Troubleshooting... 60 Warnings/Alarms.. 62

Tutorial

Tutorial.. 63
NAV 6500/NAV 6510 Appendix
Installation Instructions... 69 Gimbal Mount Installation Instructions.. 70 Flush Mount Installation Instructions. 72 Proper Antenna Installation - Signal Reception. 74 Electrical Connections.. 74 Wiring Instructions.. 75 Navaid Icons... 76 Data Cartridges... 81 List of Available Datums.. 82 NMEA Messages... 83 Abbreviations.. 90 Specifications.. 92
Coordinate Systems.. 93 What Is GPS?... 95 Explanation of Data Terms... 97 Glossary... 99

Introduction ntroduction

Congratulations on your purchase of the Magellan NAV 6500/ NAV 6510 receiver. The receiver integrates the remarkable accuracy of a GPS receiver with a broad range of electronic chart and navigation aids into a single easy-to-use navigation information center. Equipped with C-MAP CF-95 cartography, the receiver can store up to 500 waypoints, and 25 routes with up to 50 legs. The large LCD display features a help bar on every screen and can be used either with cartography or as a track plotter to monitor progress. The manual is to be used with either the NAV 6500 or the NAV 6510. These receivers differ in that the NAV 6510 is the color version of the NAV 6500. This manual is divided into six chapters; Introduction, Getting Started, Reference, Troubleshooting, Tutorial and Appendix. It is very important that you go through the Getting Started chapter first as it prepares your receiver for use and provides basic instruction. The third chapter is a Reference Section for the features found in your receiver including stepby-step instructions on their use. Because of the advanced navigational features of the receiver some of the terminology
Magellan NAV 6500/NAV 6510
used may be new to you. The Troubleshooting section gives you a problem and answer series to guide you with problems you may have. The fourth chapter is a Tutorial that walks you through the basic usage of the receiver. The final chapter, Appendix, contains some further explanations and information that will help you use your receiver and defines many of the terms that may be unfamiliar.

Press the AUX softkey to access the AUXILIARY MENU screen. While General Setup is highlighted in the Auxiliary window, press ENTER to access the window at right, containing the CONTRAST option. Use the CURSOR KEY to highlight CONTRAST and press ENTER. A bar graph appears.
Use the RIGHT/LEFT arrows on the CURSOR KEY to adjust the contrast to a comfortable level, then press ENTER to confirm. Follow the instructions at the bottom of the screen, pressing ESC twice to back out of the AUXILIARY screen.

Adjusting Backlighting

ing satellites, and therefore, calculating your position, much faster. You need not reinitialize your receiver each time you use it, but only if the unit has moved over 300 miles without computing a postion or if the total memory has been cleared by the user. If you do not reinitialize, the receiver may take 10 minutes or more to compute a new position fix. Entering an Approximate Initial Position. To give your receiver an approximation of its current position, you will need to enter the latitude and longitude of your general location. The receiver allows you to enter the location quickly and easily using the MAP screen. While viewing the Satellite Status screen, press the INIT POS softkey. The Map screen will appear. Use the CURSOR KEY to move the cursor to your present geographic area on this map. Use the ZOOM IN /ZOOM OUT keys to help you determine whether the cursor is active in the right part of the globe. (Some basic knowledge of continental land masses is helpful.) If the cursor is not in your region of the world, press ZOOM OUT repeatedly, then use the CURSOR KEY to move the cursor to your present geographic area and use the ZOOM IN key repeatedly to zero in on your present location. When you have placed the cursor near your current locaMagellan NAV 6500/NAV 6510
Adjust backlighting to three different levels of intensity by pressing and releasing the PWR key repeatedly. The intensity increases and decreases incrementally when the PWR key is pressed.
First Time Use - Initializing the Receiver
The constellation of 24 GPS satellites circling the globe is in constant motion and before your receiver can tell you where you are, it needs to know where the satellites are relative to itself. Your receivers internal almanac tells it which satellites are in view at a given geographic position. Therefore, you need to enter your approximate location, time and date, which will serve as a point of reference for your receiver in selecting the best satellites to use. Without knowing its approximate location, the receiver may take 10 minutes or more to find the specific coordinates of your position. Telling your receiver the initial position, time and date is called initializing your receiver; initializing enables it to begin track6

Contrast

Adjust Contrast
Press the AUX softkey to access the AUXILIARY MENU screen. While General Setup highlighted in the Auxiliary window, press ENTER to access the window at right, containing the CONTRAST option. Use the CURSOR KEY to highlight CONTRAST and press ENTER. A bar graph appears. Use the RIGHT/LEFT arrows on the CURSOR KEY to adjust the contrast to a comfortable level, then press ENTER to confirm. Follow the instructions at the bottom of the screen, pressing ESC twice to back out of the AUXILIARY screen and return to the last viewed root screen.

NAV Screens

The receiver has four different NAV screens that provide you with information that you can use for navigating: SAT STATUS, MAP, NAV 1 and NAV 2. From any NAV screen, press the Nxt Scrn soft key repeatedly to cycle through the four NAV screens. The SAT STATUS screen, MAP screen, NAV 1, and NAV 2 screens are constantly updating and contain the information necessary to guide you to your destination. You can customize the NAV 2 screen to display the navigation information you find most useful (see customizing).

Satellite Status Screen

Adjust backlighting to four different levels of intensity by pressing and releasing the PWR key repeatedly. The intensity increases and decreases incrementally when the PWR key is pressed.
The first screen after the navigation warning screen is the Satellite Status screen. This screen displays information relating to the satellites being tracked, searched for, or used in the position fix. A bar graph shows the signal quality of the satellites being tracked. The satellite identification numbers are shown along the bottom of the graph, and the signal strength is shown along the left edge. The longer the bar, the stronger the signal of the corresponding satellite. The satellites positions in the sky are plotted at right in 2 concentric circles representing 0 elevation at the horizon, and 45. The center point of the circle, 90, is directly overhead. The satellites being tracked are shaded.

GPS Fix

Satellite Quality Bar Graph

Jan/19/96 09:19:05AM

True North
Satellite Position (not tracking)

22 HDOP: 1.1 EPE: 63.1Ft

Satellite Position (tracking) Direction of COG Geometric Quality Estimated Position Error

Waypts

Routes

MapShft NxtScrn

The current time, date, GPS status, geometric quality (HDOP) and estimated position error (EPE) are also displayed. When the unit is first turned on, or when the position fix is more than 20 seconds old, the GPS status field will indicate Acquiring, the HDOP and EPE numbers are replaced by underscores and the available softkeys are Aux, Waypts, Routes, Init Pos, and Nxt Scrn. Init Pos can be used to initialize the unit (see Entering an Approximate Initial Position). If the receiver is computing fixes and moving faster than 0.2 mph, a line from the center to the outer circle points in the

Accessing the Waypoint List
Waypoint WPT001 WPT002 WPT003 XPT017
Description 01/19/96 01/19/96 01/19/96 01/19/96 09:50 09:51 10:23 11:24
Press ENT to review/edit; ESC to exit
Find View Del All Delete Create
The softkeys available from this screen are the Find, View, Del All , Delete, and Create keys.
Finding a Waypoint in the Waypoint List
From any NAV screen, press the Waypts, List softkeys to display the catalog of stored waypoints (Waypoint List). This list may continue for several pages if you have stored a large number of waypoints. You may store up to 500 waypoints. Use the CURSOR KEY to scroll up and down the list of waypoints. When the highlight reaches the bottom of a page, it automatically continues on the next page, if one exists. When scrolling up, the highlight automatically continues on the previous page if one exists.
From the List screen, you Find Waypoint may perform a search to call up a certain waypoint by Name: name. This is particularly Type: useful if you have many pages of stored waypoints and you know the name or type of the one you are looking for.
Press the Find softkey. The Find Waypoint window is displayed. Searching by Name. Press ENTER with the Name field highlighted. Use the CURSOR KEY to enter the complete name of the waypoint you are looking for. Press ENTER when done and the receiver returns to the Waypoint List with the waypoint highlighted. The receivers fast search will allow you to select only names that are in the waypoint list. While you are scrolling through the character list, characters that would spell a waypoint name that is not in the list are skipped. Searching by Type. Alternatively, you can find one or a series of waypoints having a given icon type. Use the CURSOR KEY to highlight the TYPE field and press ENTER. The Select Wpt Type window appears, displaying only the waypoint icon types currently in use. Use the CURSOR KEY to highlight the type of the waypoint you wish to find. Press ENTER when you have selected the icon and the receiver returns to the Waypoint List with all the waypoints with the icon you selected displayed. To return the Waypoint List to its default configuration (all waypoints displayed) press the ESC key.
Viewing a Waypoint from the Waypoint List
This function enables you to view a waypoint from the Waypoint List on the Map screen.

Waypts List

Highlight Waypoint
From any NAV screen, press Waypts, List. Use the CURSOR KEY to highlight the waypoint you wish to view and press the VIEW softkey. The display returns to the Map screen, with the selected waypoint in the center of the map, under the cursor. The information window at the left of the map shows the coordinates, bearing/distance from the present position to the waypoint being viewed.

Moving a Waypoint

From any root screen, press Waypts, Nearest. A list of the 10 nearest waypoints is displayed. The screen header indicates whether they are nearest to the cursor position or to your present position (boat). The softkeys available on the Nearest screen, Cursor and Boat, allow you to toggle between viewing a list of the 10 waypoints nearest the cursor or nearest the present position (boat). As the help bar indicates, you may Review/Edit a waypoint in the Nearest list as you would in the Waypoint List (see Editing a Waypoint).
From the map screen a waypoint can be moved to a different location.

Move Waypoint

From any NAV screen, press Waypts, and use the CURSOR KEY to highlight the waypoint on the map you wish move. Press the MOVE softkey. As the help bar indicates, move the CURSOR KEY to the new position on the map where you wish to move the selected waypoint. As you move the cursor to a new position, a dotted line appears between the old location and the new. Navigation data in the information window at left shows the bearing and distance of the new location with respect to the old, updating the coordinates as you move the cursor. When you have positioned the cursor at the desired new location, press ENTER. A waypoint used in a route cannot be moved. The waypoint can be moved under Route Edit.
A route is a planned course of travel defined by a series of waypoints stored in the receivers memory. These waypoints are then connected to form the segments or legs of the route. There are two kinds of routes: a GOTO route and a multi-leg route. A GOTO is a simple one-leg route, while a multi-leg route may contain up to fifty legs. The receiver allows you to create and store up to twenty-five multi-leg routes, which can be activated, deactivated, viewed, reversed, edited, copied or deleted.
Creating a GOTO Route from Waypoint List
Press GOTO from any screen except the Auxiliary and full map screens. The Map screen appears. To select from a list of waypoints, press the List softkey. Use the CURSOR KEY to highlight the desired destination waypoint from list and press ENTER. Creating a GOTO route automatically deletes any previous GOTO route. If the previous GOTO route was a GOTO MOB, you must confirm to delete it.

On the Map screen, you will notice a solid line showing the GOTO route created from the current position (boat icon) to the selected waypoint.
Creating a GOTO Route from Nearest List
Creating a GOTO Route by Waypoint Name

Nearest

Cursor

Enter Name

Press GOTO from any screen except the Auxiliary and full map screens. The Map screen appears. Press the Name softkey to enter the name of the waypoint to which you wish to travel. The Wayp Name window appears, showing the first waypoint that exists, alphabetically, in the Waypoint list. Use the CURSOR KEY to enter the waypoint name. Press ENTER. Creating a GOTO route automatically deletes any previous GOTO route. If the previous GOTO route was a GOTO MOB, you must confirm to delete it. On the Map screen, you will notice a solid line showing the GOTO route created from the current position (boat icon) to the selected waypoint.
Press GOTO from any screen except the Auxiliary and full map screens. The Map screen appears. To select from a list of the ten nearest waypoints, press the Nearest softkey. Press the Cursor softkey to list waypoints nearest to the cursor, or the Boat softkey to list waypoints nearest to the present position. Use the CURSOR KEY to highlight the desired destination waypoint from the list and press ENTER. Creating a GOTO route automatically deletes any previous GOTO route. If the previous GOTO route was a GOTO MOB, you must confirm to delete it.
Creating a GOTO Route to the Cursor Position

Creating a MOB Route

Move cursor to destination
Only if destination is not an existing waypoint
The MOB, or Man Overboard, function allows you to instantly create a GOTO route to the position at which you press the GOTO key and MOB softkey. Press GOTO from any screen except the Auxiliary and full map screens. The Map screen appears. Press the MOB softkey. A GOTO MOB has been created to the position at which you pressed the MOB softkey. When a GOTO MOB has been created, it remains in memory until you set another route or GOTO. A confirmation window then appears: Activate New GOTO, Delete GOTO MOB?

Deleting a GOTO Route

GOTO ESC
Press GOTO from any screen except the Auxiliary and full map screens. The Map screen appears. Move the cursor over the desired destination point and press ENTER. If no waypoint already exists at the cursor position, the Create GOTO Waypoint window appears. Use the CURSOR KEY and ENTER to modify the name, type and description, if desired, and press Done. Creating a GOTO route automatically deletes any previous GOTO route. If the previous GOTO route was a GOTO MOB, you must confirm to delete it. A solid line shows the GOTO route created from the present position to the cursor position.

The Marine Settings menu under Map Configuration allows you to turn bathymetric lines ON and OFF, and to adjust the depth areas limit. Bathymetric lines are taken from nautical charts and represent depth contours. To turn them ON/OFF, press Aux, select Map Configuration and press ENTER. Highlight Marine Settings and press ENTER. Highlight bathymetric lines and press ENTER. Choose ON or OFF and press ENTER. When you turn off bathymetric lines and return to the map, you will notice that some contours disappear and others apMagellan NAV 6500/NAV 6510
TER. Use the CURSOR KEY to adjust the numerical value and press ENTER.
Bathymetrics and Soundings Range
Turning Nav-Aid Settings On and Off
You can enter a depth range under Bathymetrics and Soundings Range for displaying spot soundings and depth contour labels. All depth soundings within the selected range will be displayed on the map as a numerical value. All bathymetric lines within the selected range will be darkened and labeled with the corresponding depth values. In order to see bathymetric line labels, Bathymetric Lines must be turned on.
To Cursor BRG 035` M n DTG 6.7 m COG 359` SOG 7.0 XTE TRN M

3280 656

Nav-Aid icons shown on the map can be turned on and off. They include Ports and Services; Attention Areas, such as caution, danger and restricted areas, and offshore installations; Tracks and Routes; Lights; Buoys and Beacons; Signals, such as radar, radio, and electronic positioning systems; and Cartographic Objects, such as generic lines, areas and texts. Press the Aux softkey, Nav-Aids and Features Menu use the CURSOR Port & Services ON KEY to highlight Map Attention Areas Contour Configuration Func- Tracks & Routes ON tions and press EN- Lights No Sector TER. Buoys & Beacons ON Use the CURSOR Signals KEY to highlight Nav- Cartograph. Objects Aids and Features Menu and press ENTER.

--.- n m ---`

Use the CURSOR KEY to select the feature you wish to activate or deactivate and press ENTER.
Use the CURSOR KEY to highlight on or off and press ENTER. Press ESC to exit. Default setting: ON (except for Attention Areas, default: Contour; Lights, default: No Sector).
03:07:21 PM Aux Waypts Routes Hide

Lights

When Lights are turned ON under the Nav-Aids and Features Menu, lights will be shown on lighthouses and other lights that rotate, a light sector will be displayed to show the range of coverage for the light. In the No Sector setting, the light will be shown without sectors.

Slot 1 or Slot 2. If there is no C-Card in the specified slot, an information window will appear saying C-Card Not Found. If there is a C-Card, the data on the CCard will appear on the screen. The small screen in the upper right will indicate which slot you are using, Slot 1 or Slot 2. To prepare the C-Card for receiving and storing information, press the Format softkey. A confirmation screen appears. Highlight YES and press ENTER. The C-Card needs to be inserted into the receiver in order to obtain the information.

Map Shift

The position plotted on the map screen and the electronic charts on the C-Map cartridges are based on WGS 1984 datum regardless of the datum set. Paper charts from which electronic charts are created may be based on other datums and were shifted to WGS 1984 when the electronic charts were created. In some rare cases, the datum of the paper chart is unknown, which may cause a consistent bias (error) to appear between the displayed position and known coordinates. This bias can be corrected by using Map Shft to shift the receivers computed position to match its coordinates on your paper chart.
When using Map Shft, we recommend that you physically go to a position that is clearly recognizable on the paper chart, to serve as a basis for performing the shift. From any NAV screen, press Nxt Scrn until you are view ing the Sat Status screen. When the unit is computing position fixes, from the Sat Status screen press the Map Shft softkey. The Map Screen appears. When no Map Shft has been set, the help bar indicates No map shift set; press ENT to set. Travel to a position you recognize with certainty on your paper chart and use the ZOOM IN key to select a scale level that closely matches the paper charts scale. Compare this position on the paper chart with the boat position displayed on the receiver. The receivers boat icon may appear to be far from your current position on the paper chart. To set the bias, use the CURSOR KEY to move the cursor, active at your current GPS position, to the position corresponding to your current location on the paper chart. A dotted line is traced from your current position to the cursor. When you have finished placing the cursor, press ENTER.

Bearing and Distance to Waypoint
2 = Differential GPS, SPS Mode, fix valid 3 = GPS PPS Mode, fix valid 7 Number of satellites in use (00-12, may be different from the number in view) Horizontal dilution of precision Antenna altitude above/below mean sea level Units of antenna altitude, meters Geoidal separation - difference between the WGS-84 earth ellipsoid and mean sea level (geoid), - = mean sea level below ellipsoid Units of geoidal separation, meters. Age of Differential GPS data - Time in seconds since last SC104 Type 1 or 9 update, null field when DGPS is not used Differential reference station ID, 0000-1023
BWC,hhmmss.ss1111.11,a,yyyyy.yy,a,x.x,T,x.x,M,x.x,N,c--c*hh

UTC of observation 10 11

2-3 Waypoint Latitude, N or S 4-5 Waypoint Longitude, E or W 6-7 Bearing, degrees True 8-9 Bearing, degrees Magnetic 10-11Distance, naut. miles 12 Waypoint identifier
GGA, hhmmss.ss,1111.11,a,yyyyy.yy,a,x,xx,x.x,x.x,M,x.x, 14
2-3 Latitude - N/S 4-5 Longitude - E/W 6 GPS Quality Indicator

1-2 2-3

Latitude, N/S Longitude, E/W
UTC of position Status A = Data valid V = Data not valid 14
line which is perpendicular to the course line and which passes through the destination waypoint.) CHECKSUM (Mandatory in this sentence.)

RMB RMC)

Generic Navigation Information (immediately follows
RMC,hhmmss.ss,A,1111.11,a,yyyyy.yy,a,x.x,x.x,xxxxxx,x.x,a *hh
RMB,A,X.XX,a,c--c,c--c,1111.11,a,yyyyy.yy,a,x.x,x.x,x.x,A *hh
Time, UTC of position fix Status (A = valid, warning) V = Navigation receiver

Data Status

2-3 XTE, naut. miles and direction to steer (L or R) [If XTE exceeds 9.99 NM, display 9.99 in field 2.] Origin waypoint ID Destination waypoint ID
3-4 Latitude at UTC time, N or S 5-6 Longitude at UTC time, E or W Speed over ground, knots Course over ground, degrees Date (DDMMYY)
6-7 Destination Waypoint Latitude (N or S) 8-9 Destination Waypoint Longitude (E or W) 10 Range naut. miles, present fix to destination waypoint Great Circle. [If range exceeds 999.9 nm, display 999.9.] Bearing, True, Great Circle, Present fix to dest. waypoint Closing velocity to destination, knots Arrival (ORed arrival circle and crossing of
Magnetic variation, degrees Magnetic variation, sense (E or W) CHECKSUM (Mandatory in this sentence)
Course over ground and Ground Speed (SPD)
VTG,x.x,T,x.x,M,x.x,N,x.x,K*hh
The formats listed are NMEA formats and Magellan receivers may not output all of the information listed for a particular format. A complete copy of the NMEA specifications can be obtained from: NMEA PO Box 3435 New Bern, NC 28564-3435
1-2 COG, degrees True 3-4 COG, degrees Magnetic 5-6 SOG, knots 7-8 SOG, kilometers/hour

Autopilot Format A

APA,A,A,x.x,a,N,A,A,x.x,M,c--c*hh
3-5 Cross Track Error, Sense (L = steer left, R = steer Right), N.Mi. Units 6-7 Arrival Circle, Arrival Perpendicular (crossing of the line which is perpendicular to the course line and which passes through the destination waypoint. 8-9 Bearing dest. LMK. from origin LMK., Magnetic 10 Dest LMK. identifier

NOTE: The area described by the UTM coordinate system extends to 84N and to 80S.

What Is GPS?

GPS is a constellation of navigation satellites that orbit the earth. The precise time and position information transmitted by these satellites is used by a GPS receiver to triangulate a position fix. The system is now officially declared initial operational, and provides continuous, 24-hour 3D (position plus elevation) coverage anywhere on the earth. GPS was developed by the United States Department of Defense to provide consistent, reliable navigation information that is unaffected by rough terrain and bad weather, and is highly resistant to multipath errors and interference. The DoD continues to administer and control the Global Positioning System. Although GPS was developed as a military navigation system, its civilian and commercial uses were recognized. The satellites therefore transmit two codes, a military-only encrypted code (PPS) and a civilian-access, Standard Positioning Service (SPS) code. All commercial and consumer GPS receivers are SPS receivers. How Does GPS Work? Each GPS satellite transmits its precise location (position and elevation) and the start time of the transmission. A GPS receiver acquires the signal, then measures the interval between transmission and receipt of the signal to determine the disMagellan NAV 6500/NAV 6510
tance between the receiver and the satellite: this is ranging. Once the receiver has computed range for at least three satellites, its location on the surface of the earth can be determined. Each satellite transmits two types of data, almanac and ephemeris. Almanac data is general information on the location and health of each satellite in the constellation. Since it contains general information, an almanac can be collected from any satellite. A receiver with a current almanac in its memory knows where in the sky to look for satellites, given its last known position and the time of day. Ephemeris data is the precise satellite positioning information that is used for ranging. Each satellite transmits its own ephemeris data. Both almanac and ephemeris data are required for a GPS receiver to locate and acquire satellites quickly and compute a position fix. Accuracy GPS positioning with an SPS receiver that is intended for general use will produce accuracies of 25 meters or better. In fact, SPS receivers have proven to be far more accurate than anyone anticipated. DoD has decided that 25-meter ac95

1 A A 1 B B 1

NM on the courseline in 1 hour, his SOA is 30 knots, whereas SOG would be 34 knots. SOG. (Speed Over Ground) This is the speed at which the vehicle/ vessel is moving in respect to the earth. SOG is measured in knots, miles per hour, or kilometers per hour. (This is not the same as speed through water, if you are travelling by boat.) STR. Steering. The difference between COG and CTS. If COG is 25 and CTS is 30, then STR is 5 Right. TTG. Estimated time en route to reach the active waypoint. TRN. Turning is the difference between COG and BRG. If COG is 80 and BRG is 75, TRN is 5 left. VMG. Velocity made good is the component of the velocity that is in the direction of the destination. In the above example, the boat is travelling directly towards the destination even though not on the courseline originally set. In this case, all of this velocity is being applied towards arriving at the destination, (i.e., VMG = SOG). Should
the boat veer away from this course and travel in a line parallel to the original courseline (A1;B1) it would be travelling on a course that would not intercept the destination waypoint. As the boat moved along, less and less of its velocity would be applied toward arriving at the destination. By the time point D is reached, none of the velocity is applied to getting closer to the destination and the VMG would be 0. As it moves to point E, it is moving away from the destination and its VMG is a negative value. XTE. XTE (cross track error) is the perpendicular distance from your boat to the left or right of the courseline that you are traveling. As you will see in the discussion of other data items, XTE is important in computing them accurately. Keeping XTE at a minimum will help maintain the most direct route to your destination. This illustration shows a boat courseline. The arrows between the boat and the courseline is the distance of XTE and this boat is to the left of the courseline. This boater would need to steer right to close the XTE.

Courseline

Glossary
Active Leg Azimuth Bearing The segment of a route currently being traveled. The angular measurement from the horizon to a satellite or other object. The compass direction from your position to a destination, measured to the nearest degree. A unique numeric or alphanumeric description of position. The direction in degrees from the start waypoint of a course line to its destination. The optimum direction the vessel should be steered in order to efficiently make headway back to the courseline while also proceeding toward the destination waypoint. It is a compromise course bearing that projects from your current position to a point on the courseline mid-way between a point perpendicular to your position and the current leg destination waypoint. Datum Refers to the theoretical mathematical model of the earths sea level surface. Map makers may use a different model to chart their maps from so positions will differ from one datum to another. The datum for the map you are using can be found in the legend of the map.

Coordinates Course CTS

Estimated Estimated Position Error is the approximate Position Error error (between 0 and X) introduced in the ephemeris by the U.S. Department of (EPE) Defense for reasons of security. This random error, known as Selective Availability (SA) is not due to receiver error and is not significant enough to affect navigation for most purposes (See DGPS in appendix). Geometric Quality (HDOP) GOTO Measures the probable accuracy of a position fix, based on the position of the satellites relative to each other. A single leg route with the present position being the start of the route and a defined waypoint as the destination.

Heading

The direction in which the receiver is moving, track or ground course, (due to wind, current, and so forth), and may also be different from the course. The angular distance north or south of the equator measured by lines encircling the earth parallel to the equator in degrees from 0 to 90. Coordinate system using latitude and longitude coordinates to define a position on the earth. A segment of a route that has a starting (FROM) waypoint and a destination (TO) waypoint. A route may consist of 1 or more legs. For a route that is from waypoint A to waypoint B, waypoint B to waypoint C, and waypoint point C to waypoint D has three legs with the first leg being from waypoint A to waypoint B.

Longitude

Latitude
The angular distance east or west of the prime meridian (Greenwich meridian) as measured by lines perpendicular to the parallels and converging at the poles from 0 to 180. The direction toward the north magnetic pole from the observers position. A coordinate system describing only Great Britain, similar to UTMs. Generally used with GBR36 datum, which also describes only Great Britain. This coordinate system cannot be used in any other part of the world. The receiver automatically selects the GBR36 datum when the OSGB coordinate system is selected in Setup. (While OSGB coordinates must be used with the GBR36 datum, the GBR36 datum can be used with LAT/LON coordinates; just be sure the map you are using uses both LAT/LON and GBR36.) Position coordinates as computed by the receiver.

Magnetic North OSGB

LAT/LON

Leg (Route)

Position Fix
Reverse Route Duplicates an existing route but in reverse order. Route A planned course of travel that is defined by a sequence of waypoints. When active, the route is used in the calculation of all navigation data except position, speed over ground and track/course over ground.
The direction to the geographical North Pole from an observers position. The north direction on any geographical meridian. The actual path traveled, which may differ from the planned course. The track over a selected length of time. Universal Time, formerly referred to as Greenwich Mean Time (GMT). Universal Transverse Mercator (UTM) metric grid system used on most large and intermediate scale land topographic charts and maps. Velocity Made Good. The component of the velocity that is in the direction of the destination. A location saved in the units memory which is obtained by entering data, editing data, calculating data or saving a current position. Used to create routes