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Limited warranty policy
Northstar Technologies, a division of BSC, Inc., warrants the Northstar 951/952 to be free
from defects in materials and workmanship for a period of two (2) years. This warranty
applies to the original purchaser and to any subsequent owner during the warranty
period, which begins on the date of shipment of the unit, F.O.B. Acton, Massachusetts, to
an authorized Northstar dealer.
Systems may not be returned to Northstar without a Returned Materials Authorization
(RMA) number. Call your Northstar dealer or Northstar for instructions.
During the unit's warranty period, Northstar will repair or replace, at its option, any part of
the unit it finds to be defective due to faulty material(s) or workmanship. All such repairs
and/or replacements will be promptly performed by Northstar free-of-charge to the owner,
excluding freight costs incurred in shipping to the factory. Return shipments from North-
star to points within the United States are made via ground transportation, freight prepaid.
Special shipping charges (overnight, two-day, and so on) are the responsibility of the
owner.
To be covered by this warranty, the Northstar equipment must have been in normal use.
This warranty does not apply to units with defects caused by improper installation, phys-
ical damage, abuse, tampering, lightning or other abnormal electrical discharge, or to
units with defaced or altered serial numbers, or to units repaired by unauthorized persons
or repaired in a manner that violates Northstar's recommended service procedures.
All repairs and/or replacements made under this warranty must be performed at North-
star's facilities in Acton, Massachusetts. Performance of warranty work elsewhere will not
be authorized, and Northstar will not pay for any charges for such work. Northstar will not
be responsible for payment of any charges imposed by a Northstar dealer or other party
for services requested by and/or performed for a unit's owner in connection with this
warranty. Such services might include removal of the unit from a vessel, inspection, pack-
aging, handling, reinstallation, and the like.
Northstar Technologies assumes no responsibility for any consequential losses of any
nature with respect to any of its products or services sold, rendered, or delivered. The
foregoing is the only warranty expressed or implied. No other warranty exists.

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Table of Contents

   Related Manuals for NorthStar 951X

   Summary of Contents for NorthStar 951X

  • Page 1 (RMA) number. Call your Northstar dealer or Northstar for instructions. During the unit’s warranty period, Northstar will repair or replace, at its option, any part of the unit it finds to be defective due to faulty material(s) or workmanship. All such repairs and/or replacements will be promptly performed by Northstar free-of-charge to the owner, excluding freight costs incurred in shipping to the factory.
  • Page 2 CAUTION! Northstar products are designed to be very useful navigation tools, but they are not substitutes for good seamanship. The prudent navigator should never rely on any single device as the sole source of navigation guidance. Exercise caution and good judgment when underway.
  • Page 3: Table Of Contents

    Introducing the Northstar 951/952 ........
  • Page 4 Using GPS ........
  • Page 5 Appendix A - Northstar 951/952 Features........
  • Page 6 Page iv 951/952 Operator’s Manual Rev. B...
  • Page 7 Figure 2: Position accuracy of uncorrected GPS ........
  • Page 8 Page vi 951/952 Operator’s Manual Rev. B...
  • Page 9 Table 2: Definitions of GPS status messages ........
  • Page 10 Page viii 951/952 Operator’s Manual Rev. B...
  • Page 11: Quick Start

    Navigating to a waypoint ....12 his chapter introduces the Operator’s Manual for the North- star 951X/XD and 952X/XD GPS chart navigators. The chapter will help familiarize you with their navigation functions and CHART display features, and explains how to use basic posi- tioning information displayed on a CHART screen.
  • Page 12: Welcome

    The 951X and 952X are both differential-ready and can be interfaced to an external differential receiver, whereas the 951XD and 952XD have built-in differential receivers. The terms “unit”...
  • Page 13: Technical Support

    15. After you follow the instructions in this manual, if you need technical support or if you have any other questions, you can contact Northstar by email, fax, phone, or U.S. mail as follows: Table 1: Contacting Northstar Email Service: service@northstarcmc.com...
  • Page 14 In case of an operating problem with your unit, you can con- tact your dealer or return the unit to Northstar for diagnosis and repair. (You may want to back up any user-defined way- points and routes before returning the unit for repair; see the Northstar 951/952 Installation Manual.) When describing an...
  • Page 15: Turning The Unit On And Off

    After inserting a chart cartridge, to activate the unit, briefly press the 3:5 (power) function key. You’ll be greeted with a map of the Earth with the words “NORTHSTAR 951X” (at left below) or “NORTHSTAR 952X” (at right below), then the owner identification message.
  • Page 16 Chapter 1 - Quick Start Warning message Page 6 After the start-up and self-test screens, a special warning mes- sage (shown below) is displayed as a precautionary reminder that you should not rely on the unit’s chart cartography as the sole means of safe navigation.
  • Page 17: Displaying A Chart

    For more charting data, you can obtain highly detailed Nav-Chart™ cartridges that are manufactured by Navionics and available from Northstar dealers. Although the unit can be used without a cartridge, its usefulness is greatly enhanced if Chapter 1 - Quick Start...
  • Page 18 Chapter 1 - Quick Start Page 8 cartridges covering the areas you intend to navigate to are readily available. Each cartridge includes several charts cover- ing a specific area of coastline. Thousands of points, or nav aids, are permanently stored on each cartridge. If you want to use a cartridge that hasn’t already been installed in the unit’s cartridge slot, you should install the cartridge before turning the unit on (to avoid any possibility of a system...
  • Page 19: Figure 1: Proper Insertion Of A Chart Cartridge

    Improper handling and stor- age of the cartridge may result in damage to the Northstar unit. Such damage is not cov- ered under manufacturer war- ranty. Initial position display screen 951/952 Operator’s Manual Rev.
  • Page 20: Displaying Position Coordinates

    Chapter 1 - Quick Start Displaying position coordinates On the chart screen Page 10 In the 951, white areas are water and gray areas are land. In the 952, for normal or hi-brite screen viewing (normal is the factory default option), white areas are water and brown areas are land;...
  • Page 21 951/952 Operator’s Manual Rev. B your vessel’s present Speed-Over-Ground (SOG) and • Course-Over-Ground (COG) and the displayed zoom-level range, in nautical miles (RNG NM) the Distance (DIST) and Bearing (BRG) to the current way- • point, if any, and the zoom-level range •...
  • Page 22: Navigating To A Waypoint

    Chapter 1 - Quick Start On the GPS position screen Navigating to a waypoint Page 12 If you want to display your position in numerical form only (without showing a chart), press the 326,7,21 function key located below the display screen.
  • Page 23 951/952 Operator’s Manual Rev. B 3. Press the *2 72 &85625 menu key at the lower right of the screen. 4. When prompted with the message START NAVIGATING TO WAYPOINT: -QUIK-, press the (17(5 key. Now the unit displays a track line to the new waypoint (auto- matically named -QUIK-).
  • Page 24 Chapter 1 - Quick Start Page 14 951/952 Operator’s Manual Rev. B...
  • Page 25: Introducing The Northstar 951/952

    Introducing the interfacing function ..24 Comparing GPS and loran ....25 his chapter introduces you to the various operational func- tions, modes of display, and features of the Northstar 951/952.
  • Page 26: Overview

    Chapter 2 - Introducing the Northstar 951/952 Overview Chart screens Chart cartridges Worldwide map Page 16 The unit combines GPS navigation with Differential GPS (DGPS) capability, and offers high-definition, high-speed chart display, loran compatibility, built-in tide data up to the year 2010, plus many other navigation features.
  • Page 27: Maintaining Your Unit

    “beacons,” and using them to display position fixes as accurate as 1-3 meters. Or, you also can connect your 951X/952X to any external source of DGPS corrections that meets the SC-104 standard, such as the North- star 8401 or 8800 differential receiver.
  • Page 28: Upon First Start-up

    Chapter 2 - Introducing the Northstar 951/952 Cleaning the screen Pre-packaged moist tow- ellettes (especially those containing a small amount of alcohol) are excellent for cleaning the unit’s display window. You might want to keep a supply on hand to wipe off fingerprints and other smudges.
  • Page 29 This alarm condition usually occurs in units shipped to customers located more than several hundred miles from Northstar, and only the first time the unit is turned on after being installed. This sequence is a normal part of using a new unit for the first time, as it notifies you that it’s in the process of acquiring satel-...
  • Page 30: Understanding The Features

    Chapter 2 - Introducing the Northstar 951/952 Understanding the features GPS features Navigation features Waypoints and routes Page 20 Upon using the unit, you’ll see that you can quickly learn to operate the system’s various features without constantly refer- ring to this manual. After you’ve read through the manual once, you probably won't have to refer to it very often.
  • Page 31: Understanding The Function Keys

    Understanding the function keys 951/952 Operator’s Manual Rev. B Chapter 2 - Introducing the Northstar 951/952 > on an electronic chart > in alphabetical order > in order of distance from your present position > stored as avoidance points •...
  • Page 32: Understanding Special Functions

    Chapter 2 - Introducing the Northstar 951/952 Understanding special functions Chart plotter functions Page 22 • • • speed of advance The 67$5 function key ( • display alarm conditions and tide information • access setup functions for customizing the operation and displays of your unit The :$<3765287(6 function key lets you:...
  • Page 33: Understanding The Display Screen

    Loran TDs TideTrack™ Understanding the display screen 951/952 Operator’s Manual Rev. B Chapter 2 - Introducing the Northstar 951/952 • zoom out to show more area • restart the desired track line to run directly from your position to the waypoint, “zeroing” the cross-track error...
  • Page 34: Introducing The Interfacing Function

    You can interface the unit to a wide variety of devices, including autopilots, paper plotters, radars, and other Northstar 951 and 952 (and 941 units). For technical information about interfacing, see the Northstar 951/ 952 Installation Manual.
  • Page 35: Comparing Gps And Loran

    Comparing GPS and loran Selective availability 951/952 Operator’s Manual Rev. B Chapter 2 - Introducing the Northstar 951/952 The nation’s GPS system was developed by the United States Department of Defense (DOD) and comprises 21 active satel- lites (with three additional spares) that literally encircle the earth with navigation information.
  • Page 36 Chapter 2 - Introducing the Northstar 951/952 Differential GPS Page 26 The majority of mariners use GPS in conjunction with a chart plotter, and for any given position solution there is an error budget. Dilution of GPS precision, errors in cartography from...
  • Page 37 DGPS receiver to switch automatically to other available satellites. The 951XD/952XD contains an internal, fully automatic differ- ential receiver. The 951X/952X doesn’t have an internal differ- ential receiver, but can accept corrections from an external differential receiver, such as the Northstar 8401 or 8800.
  • Page 38: Figure 2: Position Accuracy Of Uncorrected Gps

    GPS provides, you have two choices: • Use DGPS by one of the following options: > converting your 951X to a 951XD or your 952X to a 952XD by adding an internal differential receiver > adding an external Northstar differential receiver >...
  • Page 39 You’ll then keep the repeatable accuracy of your loran, and have all of the navigation features of the 951/952, including the excellent worldwide absolute accuracy of GPS. For the connector-pin wiring guide, see the Northstar 951/952 Installation Manual. 951/952 Operator’s Manual Rev. B...
  • Page 40 Chapter 2 - Introducing the Northstar 951/952 Page 30 951/952 Operator’s Manual Rev. B...
  • Page 41: Using The Controls

    Using the alphanumeric keypad ... . 36 Understanding the special display windows 37 his chapter describes in detail each of the Northstar 951/ 952’s controls. Read this section to learn the various functions of each control.
  • Page 42: Using The Pwr Key

    Chapter 3 - Using the Controls Using the PWR key Using the ARROW key Using the SAVE/MOB key Saving a waypoint Page 32 To turn on the unit, press the 3:5 key briefly. The unit emits several short beeps as it displays the special startup identifica- tion screen first, followed by the results of the internal self-tests that are automatically run each time the unit is turned on.
  • Page 43: Using The Function Keys

    Man overboard feature Using the function keys 951/952 Operator’s Manual Rev. B ture lets you choose how many SAVED waypoints are retained before they’re automatically erased. Press and hold the 6$9(02% key for at least five sec- onds—until you see the “Man Overboard” window—to enter “Man Overboard”...
  • Page 44 CHART screen to show your position graphically, relative to nearby waypoints and your track history, or as lat/lon coor- dinates on the GPS POSITION screen. COG and SOG are dis- played at the bottom of the GPS POSITION screen and the CHART screen.
  • Page 45: Using The Menu Keys

    WAYPTS/ROUTES function key “Where do I want to go?” NAV LOG function “How am I doing?” Using the menu keys Using the cursor pad 951/952 Operator’s Manual Rev. B The :$<3765287(6 function key lets you enter waypoints and routes, access a library of waypoints and routes that you’ve entered previously, or specify where you want to navi- gate.
  • Page 46: Using The Alphanumeric Keypad

    Chapter 3 - Using the Controls Using the alphanumeric keypad Entering numbers Page 36 played at the screen edges (see screen below). They match and follow the cursor position and can always be relied upon to show you where the cursor is located. In the 952, both the cur- sor and the cursor pointers are pink.
  • Page 47: Understanding The Special Display Windows

    Entering letters CLEAR and ENTER keys Understanding the special display windows 951/952 Operator’s Manual Rev. B When the unit is expecting you to enter letters, such as way- point names and descriptions, the operation is slightly differ- ent. Each key is labeled with three letters (or other special charac- ters) and a digit.
  • Page 48: Menu Key

    Chapter 3 - Using the Controls Alarm messages Information windows Page 38 Alarm messages contain information you should read as soon as possible. Alarms are communicated by the flashing excla- mation symbol in the bottom-right portion of the display. Press the 67$5 function key once to show the alarm condition on the ALARMS screen.
  • Page 49 Chapter 3 - Using the Controls Question windows appear when the unit needs to know more Question windows about what you want to do. A question mark always appears in this type of window. You must respond to any question window by pressing the (17(5 key to answer yes, or &/($5 to answer no.
  • Page 50 Chapter 3 - Using the Controls Page 40 951/952 Operator’s Manual Rev. B...
  • Page 51: Using Charts

    951/952 Operator’s Manual Rev. B Using Charts Displaying your present position on a chart . 42 Understanding electronic charts ... . 43 Understanding nav aids ....44 Controlling the cursor .
  • Page 52: Displaying Your Present Position On A Chart

    Chapter 4 - Using Charts Displaying your present position on a chart Page 42 You can display your present position on the CHART screen at any time by pressing the 326,7,21 key (twice, if necessary). A lat/lon grid also may be displayed that overlays the chart. The CHART screen provides a “north-up”...
  • Page 53: Understanding Electronic Charts

    Understanding electronic charts Chart boundary lines Chart details 951/952 Operator’s Manual Rev. B distance across the chart, from edge to edge), along with either your present SOG and COG, or the distance and bearing to your waypoint, or your position coordinates. CHART You also can use the get to the waypoint without needing to remain precisely on the designated...
  • Page 54: Understanding Nav Aids

    Chapter 4 - Using Charts Understanding nav aids Buoys Page 44 You may be able to use the displayed boundary lines to pre- dict when this change in detail is about to happen. Occasionally, you may see an hourglass symbol displayed briefly in the information window on the screen while the chart is changing or being redrawn.
  • Page 55 Chapter 4 - Using Charts Approach buoys and all other nav aids are identical to those in the 951. When you move the screen’s cursor on top of a nav-aid sym- bol, descriptive information is displayed at the bottom of the screen in the INFO BAR, along with the distance and bearing from your vessel to the nav aid.
  • Page 56: Controlling The Cursor

    Chapter 4 - Using Charts Controlling the cursor Page 46 Pressing the &85625 3$' causes a cursor symbol (see left) to appear on the CHART screen. Further pressing moves the cur- sor across the screen. If you move the cursor onto an object (such as a displayed waypoint), that object becomes “selected,”...
  • Page 57: Changing The Zoom Levels

    Changing the zoom levels 951/952 Operator’s Manual Rev. B > show its information (name, lat/lon, and distance and bearing) > navigate to it > add it to a route designate a point on the CHART to either go to, store as a •...
  • Page 58: Using Vessel Mode

    Chapter 4 - Using Charts Using vessel mode Page 48 able for a chart, the center of the chart is magnified to fill the screen. All text and symbols are doubled in size. Zooming in beyond this level causes all chart detail to be removed from the screen for safety reasons, leaving only your boat, its track, user-entered waypoints, and the lat/lon grid.
  • Page 59 Restarting navigation Setting up the chart detail Displaying more info 951/952 Operator’s Manual Rev. B the chart. In VESSEL mode, you can immediately locate and view your vessel’s present position (relative to your intended course line) and any nearby waypoints, nav aids, land masses, and so on.
  • Page 60: Using Browse Mode

    Chapter 4 - Using Charts Using the cursor Using mode browse Using the VESSEL menu key Page 50 • present vessel position The last press of the 025( ,1)2 menu key turns the INFO BAR off to show more of the area around you. Pressing the &85625 3$' instantly displays the cursor on the CHART screen and changes the display from VESSEL to BROWSE mode (described below).
  • Page 61: Using Distance And Bearing Mode

    Going to the cursor location Using distance and bearing mode 951/952 Operator’s Manual Rev. B Press the *2 72 &85625 menu key to begin navigating to the point designated by the cursor, as described in detail in Section 8, ”Understanding Waypoint/Route Navigation,” start- ing on page 115.
  • Page 62: Setting Up The Chart Screen

    Chapter 4 - Using Charts Setting up the chart screen Page 52 4. Press the $'' :$<37 menu key if you want to define a waypoint at the next cursor location. To control the display of data on the CHART screen, press the &+$57 6(783 menu key on either the VESSEL or BROWSE screen.
  • Page 63 Chapter 4 - Using Charts Press the &+$57 '(7$,/ menu key to modify any of the fol- Changing chart lowing CHART screen parameters: details To change any of the following CHART screen details, first press the &85625 3$' to move the cursor to the desired item.
  • Page 64 Most charts are calibrated to one of the standard datums used by cartographers. (To select the correct datum for your chart, see the Northstar 951/952 Installation Manual.) Some paper charts of less-traveled areas are based on old, incorrect sur- veys. Although charted objects are generally positioned cor-...
  • Page 65 2. Move the cursor to the actual position of your vessel. The distance and bearing of the offset you’re setting is indi- cated in the INFO BAR as FROM GPS. 3. When you’ve moved the cursor to the exact position of your vessel, press the 6(7 2))6(7 menu key and then the (17(5 key.
  • Page 66 The Northstar unit displays your track history as a series of dots indicating the path you’ve recently traveled. You can choose how often the unit stores a position fix as a point in your track history;...
  • Page 67 951/952 Operator’s Manual Rev. B To display the TRACK CONTROL screen, press the 75$&. &21752/ menu key on the CHART SETUP menu. You can choose among the following options for point storage, and the corresponding length of the track: • every 1 second •...
  • Page 68 Chapter 4 - Using Charts Page 58 (',7 menu key. This causes the field to flash, indicating you should press the &85625 3$' to select the option you want. Press the (17(5 key when you’re done, or &/($5 to restore the field to its original value.
  • Page 69: Determining Position Coordinates

    Displaying position, heading, and speed ..60 Using GPS ........61 Using DGPS .
  • Page 70: Displaying Position, Heading, And Speed

    If you no longer have a loran receiver, but want to view your position in loran TDs, the unit can convert GPS coordinates into Phantom Loran coordinates. To display the numeric coordinates of your current position in large, easy-to-read numbers, press the 326,7,21 key (twice, if necessary).
  • Page 71: Using Gps

    Near the top of the GPS POSITION screen, the unit displays your latitude and longitude in large digits. If GPS data isn’t available, dashes are displayed in place of the numbers.
  • Page 72: Table 2: Definitions Of Gps Status Messages

    Specifying the wrong datum can significantly reduce accuracy. For more informa- tion on selecting the datum for your area, see the Northstar 951/952 Installation Manual. At the top center of the GPS POSITION screen is a brief status summary of the GPS receiver.
  • Page 73 Chapter 5 - Determining Position Coordinates To display more information about signals received from the GPS satellites, press the 6$7 ,1)2 menu key on the GPS POSI- TION screen. The GPS SATS screen is displayed showing the received Signal-to-Noise Ratio (SNR) for each satellite (the...
  • Page 74: Using Dgps

    Chapter 5 - Determining Position Coordinates Using DGPS Page 64 Press the 5(7851 menu key to return to the GPS POSITION screen. When operating the 951XD or 952XD with DGPS in use, you’ll usually see position measurements accurate to about one to three meters, speed measurements accurate to about 0.1 knot,...
  • Page 75 The upper part of the screen shows the beacon’s name, fre- quency, baud rate, and its distance and bearing from your ves- sel. When the 951X/952X is successfully decoding error-free data from the tuned beacon, the word LOCK appears next to the baud rate.
  • Page 76: Table 3: Definitions Of Noise Levels

    200 or less 1,000 – 3,000 5,000 – 10,000 For details on optimizing these numbers, see the Northstar 951/952 Installation Manual. At the bottom of the DGPS STATUS screen, a summary of DGPS operation is displayed. You may see one of the following...
  • Page 77: Using Loran

    The 951XD/952XD’s DGPS signal-quality information is avail- able either from the internal differential receiver or from an optional external Northstar differential receiver. Other brands of differential receivers may supply DGPS corrections, but omit the additional signal information shown on the unit’s screen.
  • Page 78 NMEA 0183 “RMA” output data sentence structure. Without this output capability, the 951/952 won’t receive position data from the loran. For best results, connect a Northstar 800 series loran to the unit, using the 800’s “PRINTER 3” output format (see the Northstar 951/952 Installation Man- ual).
  • Page 79: Table 5: Definitions Of Loran Warning Indicators

    Chapter 5 - Determining Position Coordinates Three loran warning indicators obtained from any Northstar 800 series loran receiver are displayed to the right of each TD. These indicators are available only from Northstar 800 series lorans. Table 5: Definitions of loran warning indicators...
  • Page 80: Using Phantom Loran

    The unit’s Phantom Loran feature is designed for those users who have compiled lists of fishing spots or other locations as loran TDs, but are now using the unit as a GPS-only navigator. The unit mathematically converts GPS lat/lon coordinates to loran TDs—in real time, as you travel—enabling you to display...
  • Page 81 GRIs one at a time. When the GRI is correct, press the (17(5 key. Press the 6$7 ,1)2 menu key to display the status of the GPS receiver to temporarily display GPS coordinates and signal sta- tus (see ”Viewing GPS status” starting on page 62). Press 5(7851 to go back to the PHANTOM LORAN screen.
  • Page 82 On the 3D STEER screen on the 952, this D is green. To return to GPS signals for navigation, repeat the steps in “Selecting Phantom Loran” on page 70, except specify GPS instead of Phantom Loran.
  • Page 83: Creating Waypoints

    951/952 Operator’s Manual Rev. B Creating Waypoints Introducing waypoints ..... 74 Creating waypoints ......74 Creating avoidance areas .
  • Page 84: Introducing Waypoints

    Chapter 6 - Creating Waypoints Introducing waypoints Creating waypoints Assigning a name and description Page 74 In this manual, the term waypoint refers to a point (a location) that you’ve entered into the unit’s memory. The waypoint appears on the chart with the symbol you’ve chosen. The term nav aid refers to a point that’s permanently stored on the Nav-Chart cartridge.
  • Page 85: Figure 3: Waypoint Symbols

    Assigning waypoint symbols Entering waypoints from the chart screen 951/952 Operator’s Manual Rev. B names in the unit's memory. If you want, you can also enter a description of up to 16 characters on the line below the name. When creating or editing waypoints, you can assign a symbol for the waypoint as a means of readily identifying it on the CHART screen.
  • Page 86 Chapter 6 - Creating Waypoints Page 76 3. Press the &85625 3$' to position the cursor where you want to add the new waypoint. Zoom in or out, as neces- sary, to obtain precise placement of your waypoint. 4. Press the $'' :$<37 menu key to display the NEW WAYPT data entry screen.
  • Page 87 951/952 Operator’s Manual Rev. B from lat/lon, loran TDs, or distance and bearing coordi- nates. For loran TDs, enter any legitimate pair of TDs and the GRI for the pair. After entering the GRI, check the name of the GRI which is automatically displayed, to be sure it’s correct.
  • Page 88: Entering Waypoints

    Chapter 6 - Creating Waypoints Entering waypoints numerically Page 78 To enter waypoints numerically: 1. Press the :$<3765287(6 key. 2. Press the :$<32,176 menu key. The unit now displays the graphic WAYPTS CHART screen. List views will be shown instead if you were displaying lists during a previ- ous viewing session.
  • Page 89 Chapter 6 - Creating Waypoints 3. From the WAYPTS CHART screen, press the $'' :$<37 menu key to display the NEW WAYPT data entry screen. From the list screen, press the $'' key to display the new WAYPT ENTRY screen. 951/952 Operator’s Manual Rev.
  • Page 90: Creating Avoidance Areas

    Chapter 6 - Creating Waypoints Creating avoidance areas Page 80 4. Enter a waypoint name and optional description, if desired. 5. Choose a symbol for the waypoint by pressing the 6<0 %2/ menu key until you find a symbol you want 6.
  • Page 91 Chapter 6 - Creating Waypoints fying symbol to help in quickly identifying it as a warning area on the CHART screen. You can change this symbol, if you want to. If you travel into an avoidance area, an alarm is given both as an audio beep and a flashing exclamation point on the screen.
  • Page 92 Chapter 6 - Creating Waypoints Avoidance area alarm Page 82 For new waypoints, proceed as if entering a new way- point--either graphically or numerically, as described ear- lier--and then enter a warning radius in the WARN RADIUS box. The unit’s avoidance alarm is intended only as an extra safety feature to help make you aware of possible hazards.
  • Page 93: Displaying Waypoints

    ANCHOR DRAG, CROSS TRACK, ARRIVE RADIUS, alarms to . The audible alert will now beep only when you enter an avoidance area (or when you lose GPS or loran navigation signals). You can display waypoints in any of four ways: •...
  • Page 94 Chapter 6 - Creating Waypoints &+$57 VFUHHQ :D\SRLQWV DUH GLVSOD\HG RQ WKH FKDUW $/3+$ VFUHHQ $OO ZD\SRLQWVLQ DOSKDEHWLFDO RUGHU Chart screen Page 84 /2&$/ VFUHHQ 8S WR  ZD\SRLQWV ZLWKLQ  QP QHDUHVW ILUVW $92,' VFUHHQ $YRLGDQFH ZD\SRLQWV ZLWKLQ  QP QHDUHVW ILUVW XS WR  The WAYPTS CHART screen shows you all waypoints in the vicinity of the cursor as you move it around on the chart.
  • Page 95: Displaying Waypoint Coordinates

    Local screen Alpha screen Avoid screen Displaying waypoint coordinates Editing waypoints 951/952 Operator’s Manual Rev. B On the LOCAL screen, up to 30 of the closest waypoints within 100 nm are listed in order of distance from your present posi- tion.
  • Page 96 Chapter 6 - Creating Waypoints Changing waypoints Page 86 To display waypoints already stored, press the :$<376 5287(6 key, then the :$<32,176 menu key. The unit dis- plays waypoints in the format you last used (WAYPTS CHART, LOCAL, ALPHA or AVOID screen). If necessary, press the 1(;7 9,(: menu key to display the format you want.
  • Page 97: Updating Waypoint Coordinates

    You can also use this feature to convert approximate loran TD coordinates to precise GPS coordinates. After travelling to the actual spot where the waypoint is to be located, you can select a waypoint for updating, either from...
  • Page 98 Chapter 6 - Creating Waypoints Updating from the chart screen Updating from a list screen Page 88 the WAYPTS CHART screen or from any of the waypoint list screens. 1. Select the waypoint on the CHART screen by positioning the cursor over it so that the waypoint’s name and coordi- nates are displayed in the INFO BAR at the bottom.
  • Page 99: Moving Waypoints And Routes Between Units

    6. Press the (17(5 key (or press &/($5 to cancel). The waypoint and route import/export feature allows two or more 951 or 952 units (as well as Northstar 941’s) to conve- niently “share” all the same waypoints and routes. For exam- ple, if you have a unit that contains a number of waypoints and routes that you’d now like to have in one or more of these...
  • Page 100 The two units must be properly connected using the correct cabling and the aux head ports. For interfacing information, it is recommended that you contact your local Northstar dealer (also see the Northstar 951/952 Installation Manual, part num- ber GM1505C).
  • Page 101 951/952 Operator’s Manual Rev. B 67$57 key again to re-start the entire transfer process (this means that all waypoints and routes, not just the ones already in the receiving unit and the ones left to be transferred, are re-transferred). 1. Select the unit you’d like to use as the master. Remember: You can use either of the two units because both units are capable of importing or exporting waypoints and routes.
  • Page 102 Chapter 6 - Creating Waypoints Page 92 4. Press the ,03257 '$7$ menu key to display the IMPORT DATA screen. The status bar in the center of the screen displays the message READY TO TRANSFER to show that the transfer is ready to start. 5.
  • Page 103 Moving waypoints and routes from a unit 951/952 Operator’s Manual Rev. B NO WAYPTS OR ROUTES TO TRANSFER and the sta- tus-bar message NO TRANSFER DONE. • If the master unit is completely full of waypoints and routes (no more room available), the master unit displays the dialog-box message LOCAL UNIT STATUS ERROR [002] DATABASE FULL and the status-bar message COM- MUNICATION ERROR.
  • Page 104 Chapter 6 - Creating Waypoints Page 94 2. At the “master” unit, press the :$<3765287(6 key to display the WAYPTS AND ROUTES screen. 3. Press the ,03257(;3257 menu key to display the IMPORT/EXPORT screen. 4. Press the (;3257 '$7$ menu key to display the EXPORT DATA screen.
  • Page 105 951/952 Operator’s Manual Rev. B 5. Before transferring, check the communication link between the two units by pressing the 7(67 &200 key. If the status bar now displays the message REMOTE LINK OK, you may begin to transfer waypoints. 6. To move waypoints and routes from this unit into the other unit, press the 67$57 key.
  • Page 106: Transferring Waypoints To And From A Pc

    Northstar loader cable (part number 1100-LC). With this com- bination, you can copy, edit, or plot waypoints and routes, and, most important, if these waypoints and routes are accidentally erased or lost due to equipment failure, you can reload them from your PC back to your unit.
  • Page 107: Creating Routes

    951/952 Operator’s Manual Rev. B Creating Routes Introducing routes ......98 Creating routes from the chart ....99 Creating routes from a waypoints list .
  • Page 108: Introducing Routes

    Chapter 7 - Creating Routes Introducing routes Route/waypoint capacity Page 98 A route is a group of two or more waypoints that form a con- nected path to and/or from specific locations. You can form routes as you travel, or by placing new or existing waypoints into the order you want.
  • Page 109: Creating Routes From The Chart

    Creating routes from the chart 951/952 Operator’s Manual Rev. B To create a route graphically from the CHART screen: 1. Press the :$<3765287(6 key, and then press the 5287(6 menu key. The names of routes already stored are displayed on the ROUTES screen. 2.
  • Page 110 Chapter 7 - Creating Routes Page 100 A NEW ROUTE chart screen is displayed, ready for you to begin selecting waypoints with which you’ll create the new route. 4. To add waypoints to the route, position the cursor at the first waypoint’s location.
  • Page 111: Creating Routes From A Waypoints List

    Creating routes from a waypoints list 951/952 Operator’s Manual Rev. B A line is drawn on the NEW ROUTE screen connecting the waypoints, with small arrows indicating the direction of the route. Waypoints that are newly created as you travel are named (0001), (0002), etc., as you enter them.
  • Page 112: Saving A Route As You Travel

    Chapter 7 - Creating Routes Saving a route as you travel Page 102 the (17(5 key; if the 86( &+$57 menu key is already displayed, press (17(5 to continue using the list. 5. At the NEW ROUTE screen, press the ,16(57 menu key. The SELECT WAYPT screen appears, which lists all of your stored waypoints.
  • Page 113 951/952 Operator’s Manual Rev. B 2. Press the 6$9( menu key to instruct the unit to begin saving a route automatically. The SAVE ROUTE screen is displayed, asking you to enter the name of the new route to be saved. 3.
  • Page 114 Chapter 7 - Creating Routes Page 104 4. As you pass the location of each new waypoint, briefly press the 6$9(02% key, remembering to press the key only briefly. The boat's location is saved as a waypoint in the unit's memory, and the waypoint is automatically added to the route being saved.
  • Page 115: Editing A Route

    Editing a route Editing from the chart screen 951/952 Operator’s Manual Rev. B While you’re saving a route automatically, you can access any of the unit’s navigating functions, except for editing the route you’re presently saving. If, at any time, you’re unsure whether you’re still saving a route, press the :$<3765287(6 key, then the 5287(6 menu key to display the ROUTES screen.
  • Page 116 Chapter 7 - Creating Routes Page 106 2. Press the &85625 3$' to select the route you want to change. Press the (',7 menu key. The name of the route is displayed on the EDIT ROUTE screen. 3. If you want to change the route’s name, do so now. 4.
  • Page 117 951/952 Operator’s Manual Rev. B Adding waypoints to the beginning of a route To add waypoints to the beginning of a route: 1. Press the &85625 3$' to select the first waypoint in the route (its name is displayed in the INFO BAR). The menu key $'' 72 )5217 is now shown.
  • Page 118 Chapter 7 - Creating Routes Page 108 3. If you’ve selected an existing waypoint, press the $'' :$<37 menu key; if you’ve selected only a cursor posi- tion, press the $'' 1(: :3 menu key. Repeat this pro- cess for each new waypoint you want to add to the front of the route.
  • Page 119 951/952 Operator’s Manual Rev. B 3. Press ,16(57 1(: :3. Repeat this procedure for any other waypoints you want to add to the route. 4. When you’ve finished inserting waypoints in the route, press the &$1&(/ ,16(57 menu key to select a different editing mode, or 5(7851 to see the ROUTES list again.
  • Page 120 Chapter 7 - Creating Routes Page 110 2. Press $'' 72 (1' and move the cursor to the location of the waypoint you want to add to the end of the route. The location can be a nav aid, a waypoint, or an unmarked point.
  • Page 121 Editing from the route list 951/952 Operator’s Manual Rev. B key. Even if you remove all the waypoints from a route, the empty route is still stored in the unit’s memory. To remove the route, see ”Removing waypoints from a route” starting on page 113.
  • Page 122 Chapter 7 - Creating Routes Page 112 3. If you want to change the route’s name, do so now. 4. If necessary, press the 86( /,67 menu key to change the editing style from chart-based to list based (the 86( /,67 menu key should now read 86( &+$57, indicating that you can press it to return to chart-based editing).
  • Page 123 Erasing an entire route Editing a route you’re following 951/952 Operator’s Manual Rev. B between the LOCAL and ALPHA lists, press the 1(;7 9,(: key. 3. Move the cursor to select the desired waypoint from the displayed list, and press the (17(5 key. The selected way- point is now in your route.
  • Page 124 Chapter 7 - Creating Routes Page 114 951/952 Operator’s Manual Rev. B...
  • Page 125: Understanding Waypoint/route Navigation

    Understanding Waypoint/Route Navigation 951/952 Operator’s Manual Rev. B Navigating directly from the chart screen . . 116 Navigating to “quick” waypoint coordinates 116 Navigating to a stored waypoint ... 118 Steering to a waypoint .
  • Page 126: Navigating Directly From The Chart Screen

    Chapter 8 - Understanding Waypoint/Route Navigation Navigating directly from the chart screen Navigating to “quick” waypoint coordinates Page 116 To navigate to a point displayed on the CHART screen: 1. Press the 326,7,21 key to display the CHART screen. 2. Press the &85625 3$' to designate a nav aid, waypoint, or unmarked point.
  • Page 127 951/952 Operator’s Manual Rev. B Chapter 8 - Understanding Waypoint/Route Navigation 2. To select the type of coordinates you want to enter—lat/ lon, distance and bearing, or loran TDs—press the &225' 7<3( menu key to show the type you want to use: •...
  • Page 128: Navigating To A Stored Waypoint

    Chapter 8 - Understanding Waypoint/Route Navigation Navigating to a stored waypoint Steering to a waypoint Page 118 If you prefer to select a waypoint from a list of previously stored waypoints, rather than from the chart, first display it using one of the three waypoint list screens. 1.
  • Page 129 Chapter 8 - Understanding Waypoint/Route Navigation Both steering screens are intended to guide you precisely Choosing a steering along a course line that might follow a harbor channel, or a screen line between shoals and sandbars. You can use whichever screen you prefer.
  • Page 130 Chapter 8 - Understanding Waypoint/Route Navigation Understanding cross-track distance Page 120 If you set the steering-distance precision option to HIGH (see ”Adjusting steering-distance precision” starting on page 163), the distance to the waypoint is displayed in feet whenever you’re less than one mile from the waypoint. On the STEERING screen, the lower part displays your cross-track distance, using a symbol of your boat to show your distance from the course line.
  • Page 131 Displaying other information 951/952 Operator’s Manual Rev. B Chapter 8 - Understanding Waypoint/Route Navigation As you pass a waypoint while following a route, the boat symbol may swing around vigorously as it points to the waypoint you’re passing. When the unit switches to the next waypoint, the boat symbol snaps back to pointing straight ahead.
  • Page 132 Chapter 8 - Understanding Waypoint/Route Navigation Page 122 • Speed of Advance (SOA) and Heading Correction • Waypoint’s name, description, and coordinates 951/952 Operator’s Manual Rev. B...
  • Page 133: Navigating Along Routes

    Navigating along routes Viewing the route Reversing the route Starting the route 951/952 Operator’s Manual Rev. B Chapter 8 - Understanding Waypoint/Route Navigation To follow a route that you’ve stored in the unit’s memory, press the :$<3765287(6 key, then the 5287(6 menu key. Press the &85625 3$' to select the route you want to follow, and then press the *2 menu key.
  • Page 134: Restarting The Course Line

    Chapter 8 - Understanding Waypoint/Route Navigation Restarting the course line Page 124 If you want to navigate to a different waypoint before joining the route, press the &85625 3$' to select that waypoint and then press the *2 72 :$<37 menu key, and the (17(5 key. If you begin by navigating directly to a waypoint in the route, the unit calculates a new track line from your position to that waypoint.
  • Page 135 951/952 Operator’s Manual Rev. B Chapter 8 - Understanding Waypoint/Route Navigation • If you don’t need to return to the original course line, you can continue directly to the waypoint (Course 2 above) using the restart function. To restart your course line from your present position, display either the NAV LOG screen (by pressing the 1$9 /2* key) or the VESSEL CHART screen (by pressing the 326,7,21 key).
  • Page 136 Chapter 8 - Understanding Waypoint/Route Navigation Page 126 951/952 Operator’s Manual Rev. B...
  • Page 137: Using Nav Log

    951/952 Operator’s Manual Rev. B Using Nav Log Understanding the nav log ....128 Reversing the trip ......129 Adding waypoints to the trip .
  • Page 138: Understanding The Nav Log

    Chapter 9 - Using Nav Log Understanding the nav log Page 128 The nav log feature helps you plan and log your trip. The nav log provides two main functions: It shows your progress along your trip, and lets you easily change the remainder of it. The nav log contains (and displays in sequential order) the series of waypoints that you follow along your route.
  • Page 139: Reversing The Trip

    Reversing the trip Adding waypoints to the trip Stopping navigation 951/952 Operator’s Manual Rev. B Remember, estimated times are only estimates. They may be inaccurate because your Speed-Over-Ground may have changed, either intention- ally or by passing through varying currents. Your Estimated Time of Arrival (ETA) at the last waypoint in the route is shown at the top of the screen.
  • Page 140: Restarting Navigation

    Chapter 9 - Using Nav Log Restarting navigation Page 130 tion (that is, to re-enable the nav log function), you must go to a newly designated waypoint(s). You can restart navigation along any leg or to any waypoint of the route by moving the cursor arrow to the waypoint or leg, and pressing the 5(67$57 menu key.
  • Page 141: Using Other Special Functions

    951/952 Operator’s Manual Rev. B Using Other Special Functions Understanding the alarms ....132 Adjusting the display screen backlighting . . 139 Understanding TideTrack™ ....139 Changing the time zone .
  • Page 142: Understanding The Alarms

    Chapter 10 - Using Other Special Functions Understanding the alarms Page 132 The unit has a number of automatic alarms that can alert you of special situations. For example, when you’re approaching a waypoint, the unit signals you with a distinctive “beep” and a flashing exclamation-point symbol on the screen (shown at left).
  • Page 143: Table 6: Alarm Types And Descriptions

    GPS NO LORAN communication failure with external loran receiver DATA NO GPS DATA communication failure with GPS receiver module POOR LORAN BLINK, CYCLE or LOW SNR detected at loran CROSS-TRACK off-course in excess of limits set in...
  • Page 144 Chapter 10 - Using Other Special Functions Table 6: Alarm types and descriptions (continued) Type Description COMM FAILURE communications link failure between GPS receiver and 951/952 main computer board Setting the alarm audio Setting the anchor alarm Page 134 Six of the alarms are adjustable, as described below, including the: •...
  • Page 145 .(<3$' to specify the distance the boat can normally be expected to move on its anchor chain (add a safety fac- tor to allow for GPS or loran inaccuracy). 6. Press the (17(5 key. Remember to set the anchor alarm to OFF before intentionally moving away from the anchor-drop point.
  • Page 146 #14 on the interface connector (see the Northstar 951/952 Installation Manual for connection infor- mation). Once you set the anchor-watch alarm to honk, a continuous honking sequence begins either when your vessel moves outside the specified anchor-alarm radius or when the navigation source (i.e., GPS) becomes unavailable.
  • Page 147 (',7 $/$50 key. 3. Press the &85625 3$' to select either 200 PPNM (used to interface to speed log devices; see the Northstar 951/ 952 Installation Manual for details), or ALL ALARMS, instead of ANCHOR ALM, then press the (17(5 key.
  • Page 148: Table 7: Beep And Honk Settings For All Alarms

    Chapter 10 - Using Other Special Functions Table 7: Beep and honk settings for all alarms Sound Type Beep All alarms Beep Anchor watch Honk All alarms Honk Anchor watch Page 138 sequence stops when the alarms either automatically clear or you manually clear them.
  • Page 149: Adjusting The Display Screen Backlighting

    Adjusting the display screen backlighting Understanding TideTrack 951/952 Operator’s Manual Rev. B The fluorescent tube that illuminates the unit slowly dims after several thousand hours of use. If you use your unit for several hours every day, you may want to keep the level of the display lighting low when you don’t really need it (for instance, during daylight hours).
  • Page 150 Chapter 10 - Using Other Special Functions Page 140 To use TideTrack, press the 67$5 key until the TIDE TRACK screen is displayed. The water height for any 24-hour period is displayed for the selected NOAA tide station. Displayed at the top of the screen are the name of the selected tide station, and the selected day.
  • Page 151 Choosing a nearby tide station Choosing a tide station from the chart 951/952 Operator’s Manual Rev. B You can select from any of the nine tide stations closest to your present position, or from any of nine tide stations closest to any point that you designate on the chart.
  • Page 152: Changing The Time Zone

    Chapter 10 - Using Other Special Functions Selecting a specific Changing the time zone Page 142 4. Press the &85625 3$' to select the desired station, and press the (17(5 key twice to display the tides for that station. The TIDE TRACK screen displays tide information for today’s date.
  • Page 153 Chapter 10 - Using Other Special Functions of the week in Greenwich, England may be different from the day in your local time zone (right screen, above). To change the time zone used for the time display (for both this and other time displays), press the 7,0( =21( menu key, and use the &85625 3$' to select the desired zone and stan- dard or daylight time.
  • Page 154 Chapter 10 - Using Other Special Functions Page 144 951/952 Operator’s Manual Rev. B...
  • Page 155: Customizing The Unit

    951/952 Operator’s Manual Rev. B Customizing the Unit Changing display options ....146 Changing navigation options ....151 Changing receiver options .
  • Page 156: Changing Display Options

    Chapter 11 - Customizing the Unit Changing display options Page 146 To access the unit’s display options, press the 67$5 key until you display the USER CUSTOMIZATION screen. Press the ',63/$< 237,216 menu key to display the follow- ing choices: To change any of the options (as described below), select the option by pressing the &85625 3$' to move the arrow at the left of the screen, then press the (',7 menu key.
  • Page 157 Calculating distance and bearing Setting distance and speed units 951/952 Operator’s Manual Rev. B The unit can calculate the distance and bearing to your intended destination along either a great circle route or a rhumb line. Regardless of the selection you make, cross-track error—including the steering indicator and autopilot output—is always calculated from a rhumb line.
  • Page 158 Chapter 11 - Customizing the Unit Setting the time display Setting the lat/lon display Setting maximum saved waypoints Page 148 Time of day can be displayed in either a 12- or 24-hour format. The option you select here affects all of the unit’s time-related displays, including high and low tides, sunrise/sunset, and ETA.
  • Page 159 Press the (',7 menu key. A question window appears, asking you to enter your password. Enter the “access code” number from your Northstar owner’s card and press the (17(5 key. The first character block of the owner’s message flashes. Enter the message (up to two lines) that you want displayed each time you power-up your unit, and press the (17(5 key.
  • Page 160 Chapter 11 - Customizing the Unit Page 150 Each time you turn the unit off, it returns to the normal palette. The hi brite and night color-palette selections aren’t saved at power off. To select a color palette: 1. Press the 67$5 key to display the USER CUSTOMIZATION screen.
  • Page 161: Changing Navigation Options

    Changing navigation options 951/952 Operator’s Manual Rev. B 4. To change the palette choice, press the (',7 menu key, then use the &85625 3$' to view the three choices: NORMAL, HI BRITE, and NIGHT. Press the (17(5 key to make your selection (or clear to leave the option unchanged).
  • Page 162 The unit’s position displays and waypoint navigation are based on position information obtained from any one of four avail- able navigation data sources: GPS (GPS can be selected as the navigation source at any • time.) PHANTOM LRN (Phantom Loran coordinates are calcu- •...
  • Page 163 951/952 Operator’s Manual Rev. B If your unit is equipped with an internal differential receiver, differential GPS corrections (DGPS—if available) will always be used when either GPS or Phantom Loran is selected as the navigation source. Use the NAVIGATION SOURCE option to select which source to use.
  • Page 164 Chapter 11 - Customizing the Unit Advancing waypoints automatically or manually Page 154 The unit can be set either to advance automatically to the next waypoint upon arrival at each waypoint, or to switch way- points manually. When set to automatic switching, the unit displays new dis- tance and bearing information for the next waypoint upon arrival at the previous one.
  • Page 165: Table 8: Datum List

    When your choice is displayed, press the (17(5 key. You can set a different datum for positional display than the one you set for the output ports. For details, see the Northstar 951/952 Installation Manual. The following table lists the datums available in your unit:...
  • Page 166 Chapter 11 - Customizing the Unit Datum name ARC50_MN ARC 1950 mean value ARC50_B ARC 1950—Botswana ARC50_L ARC 1950—Lesotho ARC50_M ARC 1950—Malawi ARC50_S ARC 1950—Swaziland ARC50_ZR ARC 1950—Zaire ARC50_ZM ARC 1950—Zambia ARC50_ZB ARC 1950—Zimbabwe ARC60_MN ARC-1960 mean value ARC60_K ARC 1960—Kenya ARC60_T ARC 1960—Tanzania Ascension Island 1958...
  • Page 167 Datum name CARTH Carthage CHAT Chatham 1971 (S.W. Pac. Isl.) CHUA Chua-Astro CORR Corrego-Allegre DJAK Djakarta (Batavia) DOS68 DOS 1968 (S.W. Pac. Isl.) EI67 Easter Island 1967 EUR50_MN European 1950—mean value EUR50_WE European 1950—Western Europe EUR50_CY European 1950—Cyprus EUR50_EG European 1950—Egypt EUR50_GB European 1950—England EUR50_GR...
  • Page 168 Chapter 11 - Customizing the Unit Datum name IND_TV Indian (Thailand/Vietnam) IND_BIN Indian (Bangladesh/India/Nepal) IRE65 Ireland 1965 ISTS ISTS 073 Astro 1969 JI61 Johnston Island 1961 JAND Kandawala—Sri Lanka KERG Kerguelen Island (Indian Ocean) KERT Kertau 1948 (Malaysia) KKJ (Finnish) LC5A L.C.
  • Page 169 Datum name NAD27_EU North American 1927—Eastern U.S. NAD27_AK North American 1927—Alaska NAD27_BH North American 1927—Bahamas NAD27_SS North American 1927—San Salvador Island NAD27_CN North American 1927—Canada NAD27_AB North American 1927—Alberta and B.C. NAD27_EC North American 1927—East Canada NAD27_MO North American 1927—Manitoba and Ontario NAD27_NE North American 1927—N.W.
  • Page 170 Chapter 11 - Customizing the Unit Datum name OSGB_MN Ordin. Survey of Gr. Britain 1936—mean value OSGB_E Ordin. Survey of Great Britain 1936 —England OSGB_IM Ordin. Survey of G. B. 1936—Isle of Man, Wales OSGB_SSI Ord. Surv of G.B. 1936—Scot. & Shetlnd Islands OSGB_WL Ordinance Survey of Great Britain 1936—Wales PDLN...
  • Page 171 Datum name SCHW Schwarzeck (Namibia) SA69_MN South American 1969—mean value SA69_AG South American 1969—Argentina SA69_BO South American 1969—Bolivia SA69_BR South American 1969—Brazil SA69_CH South American 1969—Chile SA69_CO South American 1969—Colombia SA69_EC South American 1969—Ecuador SA69_GY South American 1969—Guyana SA69_PA South American 1969—Paraguay SA69_PR South American 1969—Peru SA69_TT...
  • Page 172: Table 9: Options For Displaying Cross-track Information

    Chapter 11 - Customizing the Unit Datum name WGS84 WGS 1984 ZAND Zanderij (S. America) Adjusting the cross-track scale Page 162 Table 8: Datum list (continued) The STEERING screen’s cross-track display limits can be adjusted to suit your needs, whether you’re navigating in open waters or attempting to maneuver through a tight channel.
  • Page 173 Chapter 11 - Customizing the Unit ting (in the DISPLAY OPTIONS menu) to enable your choice of either feet or meters in the cross-track display. The STEER DIST PRECISION option offers an extra level of Adjusting accuracy to the distance-to-waypoint and cross-track error dis- steering-distance plays on both the STEERING and 3-D STEER screens.
  • Page 174: Changing Receiver Options

    Changing receiver options Changing GPS speed averaging Page 164 To access the unit’s GPS and DGPS receiver options, press the 67$5 key until you display the USER CUSTOMIZATION screen, then press the 5(&(,9(5 237,216 menu key to display the RECEIVER OPTIONS screen.
  • Page 175 Northstar’s fully automatic differential receiver, which is contained internally within the 951XD or 952XD, or you can connect a DGPS receiver to the 951X or 952X externally (see the Northstar 951/952 Installation Manual for further details on interfacing to external sources of differential corrections).
  • Page 176 Chapter 11 - Customizing the Unit Page 166 Using automatic mode The 951XD/952XD, with its two-channel Northstar differential receiver, enters automatic differential mode as soon as correc- tions are received, and requires no further supervision of dif- ferential operation. It maintains automatic operation by using two independent receiver channels.
  • Page 177 AUTO A non-Northstar external differential receiver can’t be manually controlled by the 951/952, unless it supports the MX50R control protocol. Refer to the particular differential receiver manufacturer’s instructions to determine if this control protocol is supported.
  • Page 178 After this “time-out” period elapses with no receipt of DGPS data, the unit reverts to navigating with normal GPS, the DGPS display indicator (shown at left) is turned off, and the “DGPS lost” alarm sounds, if enabled (see ”Understanding the alarms”...
  • Page 179: Changing Port Setup Options

    You also can connect one unit to another (for example, connect two 952s, two 951s, a 951 and a 952, or either a 951 or 952 with a Northstar 941), so that two or more units can “share” all the same waypoints and routes.
  • Page 180: Displaying Service Information

    Page 170 For detailed information on how to interface your unit with other equipment and change the port setup options, see the Northstar 951/952 Installation Manual or your local Northstar dealer. To view your unit’s serial number and hardware specifications, press the 67$5 key until the USER CUSTOMIZATION screen is displayed.
  • Page 181 DGPS differential receiver. Be sure to have your unit’s serial number and software version available (see below) whenever contacting or corresponding with your Northstar dealer or the factory. This number is the revision level of your unit’s operating soft- ware program.
  • Page 182 The wires are also numbered according to their respective positions in the interface connec- tor. (They’re listed in the Northstar 951/952 Installation Man- ual.) To help protect the installed Nav-Chart cartridge—as well as the unit’s internal components—from water and salt spray, a...
  • Page 183 Using the 952’s LCD test key 951/952 Operator’s Manual Rev. B Essentially, when the door is open the unit functions as though there were no cartridge installed. If the door becomes damaged, or the latch sensor doesn’t oper- ate properly, you can bypass the safety feature by pressing the ,*125( '225 menu key on the SERVICE INFORMATION screen, and then the (17(5 key (or &/($5 to cancel).
  • Page 184 Chapter 11 - Customizing the Unit Page 174 951/952 Operator’s Manual Rev. B...
  • Page 185: Appendix A - Northstar 951/952 Features

    Latitude/longitude (158 datums) from GPS with one-sec- ond updates • Phantom Loran-C TDs calculated from GPS • Loran-C TDs (from your existing loran: one second from Northstar 800 series, two seconds from other lorans) • Real-time receiver status screens • Large, easy-to-read graphical presentation •...
  • Page 186 Waypoint and route management Waypoint navigation Nav log Page 176 • Estimated Time of Arrival • Estimated Time Enroute • Speed of Advance • Automatic magnetic variation • User-entered avoidance waypoints • Enter waypoints as lat/lon, distance and bearing, or loran Displays 30 closest waypoints (3D STEERING screen) •...
  • Page 187: Plotter Functions

    Distance and bearing for all legs • Skip forward and back in trip • Plotter shows track history, nearby waypoints, avoidance areas • Speed-Over- Ground • Course-Over-Ground • Anchor watch • Avoidance-area alarm • GPS clock • TideTrack™ Page 177...
  • Page 188 Page 178 951/952 Operator’s Manual Rev. B...
  • Page 189: Glossary

    The procedure during which a GPS receiver attempts to track satellites before a position fix can be computed. almanac Data describing the precise orbits of GPS satellites, obtained automatically from satellite signals and stored in a GPS receiver.
  • Page 190 The difference between magnetic North and true North. Since the difference varies according to geographic location, the Northstar 951/952 automatically calculates magnetic variation and uses it to display bearings as magnetic north. The varia- tion at any location changes slowly over a period of years, and the unit compensates, according to the current calendar year.
  • Page 191 The “slave” loran transmitters in a chain of at least three sta- tions. Signal to Noise Ratio. Guide number for determining the rela- tive quality of GPS, DGPS, or loran signals as compared to background radio “noise.” Time Difference. The measured amount of time—in millionths of a second—between loran signals received from the master...
  • Page 192 Page 182 951/952 Operator’s Manual Rev. B...
  • Page 193: Index

    Accuracy absolute comparing loran to GPS in ,  definition of effect of selective availability on with DGPS with GPS of the DGPS receiver of the GPS receiver repeatable ,  definition of effect of selective availability on improving with DGPS...
  • Page 194 definition of removing from waypoint setting audible alert off Beacon ,  baud rate Beacon receiver. See DGPS receiver Brightness. See display screen Browse mode changing to vessel mode – understanding Cartography, definition of Chart card. See chart cartridge Chart cartridge access door bypassing safety features cautions...
  • Page 195 – understanding using chart boundary lines Clearing alarms. See Alarms COG. See Course-over-ground Color-palette selection Contacting Northstar , , ,  Course-over-ground Cross-track alarm customizing display limits , ,  distance options for displaying...
  • Page 196 , ,  status of using the SC-104 selecting understanding the DGPS system Differential GPS. See DGPS Display screen , ,  adjusting adjusting for normal/night/hi brite viewing Distance and bearing calculating , , , ...
  • Page 197 Exporting all waypoints and routes from another unit Feedback, sending yours to Northstar – First start-up Function keys Also see names of individual keys introducing – using the Global Positioning System. See GPS absolute accuracy , ,  accuracy , ...
  • Page 198 , , , , , ,  displaying entering using a chart offset Loran chain converting from GPS coordinates definition of displaying position as Page 188 , , ,  ,  , ,  951/952 Operator’s Manual Rev. B...
  • Page 199 TDs on chart screen on quik waypt screen on waypts screen interfacing with GPS receiver displaying data from interfacing to unit simulating repeatable accuracy of selecting as navigation source status transmitter understanding warning messages Magnetic variation changing , ...
  • Page 200 DGPS and GPS ,  NMEA 0183 Noise levels (atmospheric) Northstar, contacting Personal computer Phantom Loran definition of ,  displaying – understanding Port. See Interfacing your 951/952...
  • Page 201 – starting stop saving Satellite changing elevation effect of DPGS on , , , , ,  GPS system status messages status on first start-up , , , ,  SAVE/MOB key Serial number of unit Service obtaining technical support returning the unit for repair 951/952 Operator’s Manual Rev.
  • Page 202 Sharing waypoints and routes. See waypoints, routes. Signal to Noise Ratio definition of using the warning message from a Northstar 800 SNR. See Signal to Noise Ratio SOG. See Speed-over-ground. ,  Speed averaging , , , , , ...
  • Page 203 diamond shaped box ,  dotted line exclamation point hourglass landmarks miscellaneous for waypoint series of dots – slashed circle triangle TD. See Time difference Technical support. See Service TideTrack choosing a tide station displaying information for today’s date displaying tide information ,  understanding Time and date...
  • Page 204 , – arrive radius assigning symbols to backing up converting GPS coordinates to TDs creating routes from creating with SAVE/MOB key ,  definition of designating as avoidance areas , ,  displaying displaying coordinates of , –, ...
  • Page 205 transferring to a personal computer ,  warning radius WAYPTS/ROUTES function key ,  understanding using to create routes using to designate warning radius using to display waypoints using to display waypts and routes screen using to edit routes using to enter waypoints on chart screen using to navigate along routes using to navigate to quick waypoints using to navigate to stored waypoints...
  • Page 206 951/952 Operator’s Manual Rev. B Page 196...

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