Network GPSplus User Manual
Contents
1. 5D 5B B2 SEEUP HP BY NUMBER WPT MOB 1 Press the WPT MOB 2 Press the SETUP key 4 key times The display will show WP BY NUMBER 3 Press the ENTER key The display will flash NUMBER 4 Press the ENTER key to memorise the selection Use the W STEP A knob to select the sorting method 21 ENTERING WAYPOINT BY RANGE AND BEARING FROM PRESENT POSITION 50 58 82 IN 7 BEAN J003 A tE E WPT MOB 1 Press the WPT MOB key Use the W STEP A knob to view the waypoint library CO OC 6 Lc mm ENTER 5 Use the W STEP A knob to select a waypoint from the library to calculate the range and bearing from For example BUOY WPT 1 is used 2 Press the SETUP key 5 times The display will show WPT BY RB Use the V STEP A knob to select a WPT number SEEUP III d Wr I II II im II I II II SENP vSTEPA O EC E LI CoO L I 6 Use the W STEP A knob to select a waypoint library location for the new waypoint Press the ENTER key to memorise the new range and bearing rni AD nit bre DDD9H ENTER RANGE EE CO CO ENTER 3 Press the ENTER key The range in nautical miles will flash Use the WSTEPA knob to enter the range from 0 01 to 50 58 156 Nr us 29 3 B T T Press the WPT MOB key twice to display the latitude and longitude of the waypoint The way2. pi Lt Press the ENTER key the display will now show nOt USEd Turn the W STEP A knob If the GPS has not yet locked onto the position then nOt USEd will remain If the GPS has locked then nOt USEd will be replaced with the Latitude and Longitude 50 5B B2 Press the ENTER key to memorise the selection Press the POS key to return to the position page 58 82 Ne 217825 JI II IIIILI r rr L I FILM Br 57 TRANSFERRING WAYPOINT DATA Up to four GPSPlus displays can be connected into a Network System This allows multiple NMEA receivers to be used remember that a single GPSPlus display allows two NMEA receivers to be connected To enable GPSPlus displays to co exist on the same network most of the setups are common and the waypoint and route libraries must be identical When another GPSPlus display is added the data is usually transferred automatically via the system network cables Occasionally automatic data transfer is unsuccessful and it is necessary to manually initiate the transfer of waypoint and route library data from one unit to the other Data transferred to other NMEA devices not GPSPlus displays is always initiated manually The copying of data whether between GPSPlus displays or other NMEA devices is called Uploading or Downloading depending on the direction of the data transfer DOWNLOADING There are two methods of Downloading 1 Downloading Via B amp G Network This is when d
3. 1 2 Press the POS key Press the SETUP key until MAG VAR is displayed The current mode will also be displayed By default this is AUTO the calculated magnetic variation is displayed on the bottom line Press the ENTER key the AUTO display will now flash Use the WSTEP A knob change from AUTO to EnTEREd Press the ENTER key Use the W STEP A knob to enter the magnetic variation in degrees from 0 to 180 Press the ENTER key Use the t STEP s knob to enter W for West or E for East Press the ENTER key to memorise the setting DISTANCE UNITS All distances are displayed in the units selected either NM Nautical Miles M Statute Miles or K Kilometres The default setting is NM Nautical Miles 1 2 Press the POS key Press the SETUP key until dIStANCE is displayed The current units will also be displayed SEtUP dIStANCE NAUTICAL Press the ENTER key the display will now flash Use the W STEP A knob change the distance units Press the ENTER key to memorise the setting 54 COG AND SOG DAMPING This is the damping factor applied to Speed and Course Over the Ground When set to AUTO more damping is applied when SOG is low to prevent display jitter 1 2 Press the POS key Press the SETUP key until COG SOG is displayed The setting for damping will also be displayed SEtUP COG SOG DAMPING OFF Press the ENTER key the display will now flash Use the W STEP A
4. NAME WPT 50 58 82 II 7 8691 HDD Co c c WPT MOB EB v STEPA 3 Press the ENTER key The first character will start flashing Use the W STEP A knob to change the character 50 58 2 WPT MOB 7 Entry of waypoint latitude and longitude if required can be carried out previously explained as SEEUP NAME WPT 4 Press the ENTER key to accept the displayed character and advance to the next COPYING FROM WAYPOINT TO WAYPOINT NDE USEd CoO c3 c yi S 1 Press the WPT MOB key Use the W STEP A knob to select the target WPT number or name SEEUP COPY A WAYPT OD CO cmm ENTER 5 Press the ENTER key to copy the waypoint to the library location The display will show COPY A WAYPT 2 Press the SETUP key 3 times The display will show COPY A WAYPT 50 5 el ae CO CoO Co WPT MOB 6 Press the WPT MOB key The display will show you the new waypoint COPY esckgd c MARKED 002 v A O CoO Co Q O ENTER 3 Press the ENTER key Use the W STEP A knob to select the waypoint to be copied The waypoint number and name will be displayed P4 tQ RUGY WODE 2 vSTEPa pops 9 4 Press the ENTER key Use the W STEP A knob to select the target waypoint The waypoint number and name will be displayed 20 SORTING THE WAYPOINT LIBRARY
5. WAYPOINT SELECTED POINt SELECtEd This is the name or number of the target waypoint selected for NAV functions PG SELELEEd Unique waypoint III I I Waypoint library name or number I I number NAV NAV key ROUTE SELECTED USING ROUTE When a route has been selected from the route library the display will show which route is selected the direction of travel along the route and the current leg Route selected 1 10 FOUEE Direction of the LIT LEER Current leg number selected route nu Leu of the selected route NAV NAV key PILOT NMEA INPUT USING PILOT NMEA INPUT When NMEA data is being supplied via the NMEA interface of the Network PILOT display unit from a Chart Plotter the GPSPlus display will let you know u5 Mb PILDE MIMI LI IVIILII NAV NAV key 35 PAGE2 BEARING AND DISTANCE Bearing brG and Distance from present position to the target waypoint Bearing is displayed in degrees Magnetic M and distance is displayed in nautical miles nM by default Bearing to UM M Target Waypoint BY Distance to E Mar M Target Waypoint TF Target Waypoint III wr i library number NAV NAV key BEARING DISTANCE XTE SOG AND COG Bearing to target
6. MAN OVERBOARD MOB FACILITY 50 58 B2 Ne 1 HESS BUD O L Co WPT MOB 8 1 Press and Hold the WPT MOB key for seconds SU 5B Be 21 825 n LI LIF I LI _ POS 88 CO c3 Co 5 Press the POS key to display current position in latitude and longitude 2 The display will flash MANOVER and the internal alarm will sound Press any key to silence the alarm 5858 82 IM el BUG 6 Press and hold the MOB WPT key for 3 seconds to return to normal operation 23 inthe BU Tg MAN VER como CI L I Co 3 The display will now show the range and bearing to the MOB event This display can also obtained by pressing the NAV key SU 5B Beg 1 BE Siwr MET 4M II I 4 1 II AM III II DLL LI L I L WPT MOB 7 The event is stored in the waypoint library as WPT 230 This waypoint will not be automatically overwritten by another MOB event so 4 Press the WPT MOB key to display the latitude and longitude of the MOB event it must be erased from the waypoint library using the waypoint erase facility VIEWING THE WAYPOINT LIBRARY Press the WPT MOB key to the view the waypoint library If the WPT MOB key was the last key that was pressed the display will show MARK or MARKFULL for a few moments The fla
7. anchorage a point off a landmark buoys harbour entrances or any position at sea Whatever the waypoint it is necessary to know its position in latitude and longitude or determine its range and bearing from your present position This can be taken directly from your chart The GPSPlus display can store 250 waypoints in its memory this is commonly called a waypoint library The waypoints are given unique numbers and can also be named so they can be recalled when required After a time your waypoint library will contain all your most commonly used navigational points The waypoints in the library can be edited if required i e copied named and deleted This will be necessary if you have used all of the 250 waypoint library locations Until at least one waypoint has been entered into the GPSPlus library defining a route the advanced navigational features obtained by pressing the NAV key are not available ENTERING WAYPOINT DATA Waypoints can be entered into the waypoint library of the GPSPlus unit in many ways The following is a list of these methods 1 Mark facility one touch waypoint entry 2 Entry of waypoint latitude and longitude 3 Entry of present position as a waypoint 4 Copying from a library waypoint to another 5 Entry by range and bearing from another waypoint 6 Copying or uploading from another position fixer NAMING WAYPOINTS It is possible to give any waypoint a name This could be the charted name
8. 1967 Pitcairn Island PROVISIONAL S CHILEAN 1963 South Chile 71 LIST OF CHART DATUMS PROV S PROVISIONAL AMER S AMERICAN 1956 PUERTO PUERTO RICO RICO Bolivia Chile Colombia Equador Guyana Peru Venezuela Puerto Rico Virgin Islands QATAR QATAR NATIONAL NATION QORNOQ QORNOQ South Greenland REUNION REUNION ROME 1940 ROME 1940 Sardinia Island SANTO DOS Qatar Mascarene Island Espirito Santo Island SAO BRAZ SAO BRAZ SAPPER SAPPER HILL 1943 HILL Sao Miguel Santa Maria Islands Azores East Falkland Island SCHWARZE SCHWARZECK CK S AMERICA SOUTH AMERICAN 1969 Argentina Bolivia Brazil Chile Colombia Ecuador Guyana Paraguay Peru Venezuela Trinidad and Tobago Singapore SOUTH ASIA SE BASE SOUTHEAST BASE Porto Santo Madeira Islands SOUTHWEST BASE Faial Graciosa Pico Sao Jorge Terceira Islands Azores SWEDEN RT90 RT38 SWEDEN TIMBALAI TIMBALAI 1948 Brunei 48 East Malaysia Sarawak Sabah SW BASE 72 TOKYO TOKYO Japan Korea Okinawa TRISTAN TRISTAN ASTRO 1968 AST Cunha VITI LEVU VITI LEVU 1916 Viti Levu mmm Fiji Islands ENIWETK Islands ZANDERIJ ZANDERIJ Surinam WGS 72 WORLD GEODETIC SYSTEM 1972 SYSTEM 1984 es entered Lat LUN ENTERED Long offset 73
9. In a standard GPSPlus system the GPSPlus antenna receiver unit uses the top connector leaving the other for connection to a secondary NMEA device e g a GPS Loran C or Decca receiver GPSPlus RECEIVER SOCKETS Rear view of GPSPlus Display To GPS antenna receiver junction box Cable 610 OA 058 NMEA Input Output receiver sockets To secondary NMEA device GPS Decca Loran C Cable 610 OA 038 Cable connections for other units power NMEA input output to the position fixer receiver has hardware connections for version 1 5 NMEA The receiver connection cables supplied have the following colour coded connections GPS ANTENNA CONNECTION USING CABLE 610 OA 058 WIRE COLOUR FUNCTION GREY NMEA IN 3 BLACK NMEA IN 4 SCREEN CABLE SHIELD 6 SECONDARY NMEA 0183 DEVICE CONNECTION USING CABLE 610 OA 038 WIRE COLOUR FUNCTION BLACK NMEA OUT 1 WHITE NMEA OUT 5 GREEN NMEA IN 3 YELLOW NMEA IN 4 SCREEN CABLE SHIELD 6 61 NMEA OUTPUT The GPSPlus display software provides NMEA output from both of the receiver connection sockets It is necessary to select the required NMEA output sentences as ON transmitted or OFF not transmitted To determine which sentences are required refer to the NMEA device handbook To turn a sentence from OFF to ON or vice versa 1 Press the POS key to display the CURRENT FLOW page 2 Press the SETUP key once the display will show OUTPUT 3 Turn
10. Track to Left I Track XTE Cross Track Error Distance to Target Waypoint NAV key 36 PAGE6 ESTIMATED TIME OF ARRIVAL PAGE 7 LATITUDE AND LONGITUDE OF TARGET WAYPOINT SELECTED Latitude and Longitude of target waypoint The target EtA POINT Estimated time of arrival at the target waypoint waypoint name or number is shown on the text display in hours and minutes The date month and year are displayed on the bottom line Latitude 60 58 ti Longitude lg 1 H 5egL PU ifil Target Waypoint INEI D LI ETA Estimated Time of Arrival BB NAV key MED 15LP SHe Date NAV NAV key ROUTE SELECTED EtA END Estimated time of arrival at the last waypoint of the route in hours and minutes The date month and year are displayed on the bottom line ETA Estimated Time of Arrival TOC tal Date NAV key 37 CHANGING THE CURRENT LEG OF A ROUTE The GPSPlus allows any leg of the selected route to be missed or skipped over so that the route can be changed without inserting or deleting any waypoints Once a route has been selected proceed as follows br 849 1 Press the NAV key The display will show the last NAV page displayed SEEUP FOUEE LURNT LEG O 2 Press the SETUP
11. Use the V STEP A knob to adjust the minutes 3 Press the ENTER key the display time and date line will 7 Press the ENTER key to memorise your setting now flash 4 Use the W STEP A knob to select the required time and date format 5 Press the ENTER key to memorise your setting 52 SETTING THE DATE This setting allows the correct Day Date Month and Year to be entered into the memory 1 Pressthe POS key 2 Press the SETUP key until dAte is displayed SEtUP dAtE TUE 18 APR 95 3 Press the ENTER key The displayed date will now flash Use the W STEP A knob to select the required date Press the ENTER key The month will now flash Use the W STEP A knob to select the required month Press the ENTER key The year will now flash Use the W STEP A knob to select the required year Press the ENTER key to memorise the settings NOTE The GPSPlus will work out the day automatically gt SETTING MAGNETIC OR TRUE BEARINGS All bearings are displayed in degrees selected Magnetic M or True T 1 Press the POS key 2 Press the SETUP key until bEArInGS is displayed SEtUP bEArInGS MAGNETIC 3 Press the ENTER key magnetic or true will now flash Use the W STEP A knob to adjust the setting Press the ENTER key to memorise your setting 53 MAGNETIC VARIATION The magnetic variation is calculated by the unit when in AUTO however the value can be EntErEd if required
12. WPL Waypoint location OFF 62 GPSrLus DIFFERENTIAL INFORMATION The GPSPLUS system is capable of accepting a Differential GPS input conforming to the RTCM SC 104 V2 0 format Refer to the installation sheets for wiring details Once the GPS has obtained a fix and the Differential receiver has locked onto the beacon the GPSPLUS display will show the following GPS Plus Latitude of BB Bc f A FIX Longitude 1 Position is PS DIFF vSTEPA Differential corrected ROUTE LIGHTS ENTER NOTE The above is not a new page The value of HDOP is replaced with GPS DIFF The basic GPS system available to the normal user contains a deliberate inaccuracy called Selective Availability SA This limits the accuracy of the GPS position to an average of 100 metres To improve the accuracy a system called Differential GPS DGPS was designed to run with the normal GPS system The basic principle of DGPS is that a known position Lighthouse Coastguard Station etc has a normal GPS receiver installed A computer monitors the position from the GPS and compares this to its known position The error between the GPS position and the known position is calculated then transmitted over a conventional radio link to the vessel The GPS on board the vessel recalculates the position taking into account the errors A separate receiver and antenna are needed to receive the Differential beacon signal GPS ERROR
13. a route or sailplan The waypoint arrival alarm is triggered when the vessel is within a preset radius around the target waypoint The alarm is triggered in two ways 1 When the vessel arrives at the target waypoint within the radius set for the auto advance function the display will sound its alarm and flash ARRIVED Other Network units will also sound their alarms D AUTO A DV RADIUS ARRIVED ORS ACK 40 WAYPOINT ARRIVAL CONT 2 When the vessel DOES NOT arrive at the target waypoint within the set radius for auto advance BUT crosses an imaginary line drawn through the waypoint perpendicular to the rhumb line between waypoints the display will sound its alarm and flash CROSSING Other Network units will also sound their alarms CROSSING 5 R b B AW ETE MBL iy e EN gt E ONT x AUTO ADV RADIUS w i B A The action taken when the alarm is activated depends on the AUTO ADVance status If AUTO ADVance is ON the next waypoint in the route is used when the vessel arrives or crosses the waypoint as described above When this occurs the alarm will sound and the display flashes for five seconds then the next waypoint in the route will be automatically selected If AUTO ADVance is OFF the next waypoint in the route is used only when a key is pressed to silence the waypoint arriva
14. can be obtained from the navigational chart you are using 1 Press the POS key 2 Press the SETUP key until dAtUM is displayed 3 Press the ENTER key the displayed chart datum will now flash 4 Use the W STEP A knob to select the required chart datum Refer to the datum list at the end of this manual NOTE For user defined chart offsets select USER ENTERED 5 Press the ENTER key to memorise your setting SETTING A USER DATUM This is a user entered latitude and longitude offset obtained from some charts NOTE Before USER DATUM can be used USER ENTERED must be selected as DATUM see previous section 1 Press the POS key 2 Press the SETUP key until USER DATUM is displayed SEtUP USER DATUM 3 Press the ENTER key the display will now flash 00 000N 00 000E USER DATUM 4 Use the W STEP A knob and the ENTER key to enter the required offset 5 Press the ENTER key to memorise your setting 48 SELECTING NMEA OUTPUT SENTENCES The setting allows the NMEA output sentences to be selected as ON transmitted or OFF not transmitted It is important that when interfacing with other NMEA devices that the correct sentences are selected to ON Initially all sentences are OFF except RMB and RMC Refer to GPSPlus Interfacing for more information 1 2 Press the POS key Press the SETUP key until OUItPUI is displayed The NMEA sentence mnemonic will flash Use the W STEP A knob to
15. memorise your setting To change the alarm state without adjusting the limits miss out step 4 45 WAYPOINT ZONE ALARM The zone alarm sets a circle of a specific radius around any waypoint If the boat should drift INTO the predetermined radius the alarm will sound This is very useful when attempting to remain near to a specific waypoint but without getting too close for example a wreck particularly good for fish The GPSPlus display allows ten zone alarms to be set These could be used to create a barrier or exclusion zone as shown in the example below Press any key to silence the alarm ZONE ALARM RADIUS ONE 2 ZONE 0 7 ZONE MI 1L wer ALARM SETTING THE ZONE ALARM 1 7 Press the POS key Press the SETUP key until ZONE 0 AL is displayed Use the W STEP A knob to select the ZONE to be set up Press the ENTER key the display will flash the WPT number Select any waypoint from the waypoint library with the W STEP A knob Marks can be used Press the ENTER key the display will flash the zone alarm radius Use the W STEP A knob to alter the value in the range 0 01 to 9 99NM NOTE The value is factory set to 1 00NM The value will be displayed in Statute Miles or Kilometres if those units have been selected Press the ENTER key to memorise your setting
16. of buoys navigational markers or any unique name you wish to use The name must not exceed eight characters in length and can be any combination of letters numbers spaces and the symbols All spaces count as characters For example BUOY lt BUOY gt 123 BUOY B U O Y The following words are reserved for use by the GPSPlus unit and can not be used as waypoint names INSERT DELETE START END All waypoints can be named before or after their position has been entered This allows you to generate a list of library names and then at a later date enter the latitude and longitude The waypoint library can be sorted and listed either numerically default from WPT 1 to WPT 250 or alphabetically by name Setting this feature is explained later TRANSFER OF WAYPOINT DATA It is possible to copy the waypoint library from the GPSPlus display to another or any NMEA device This is called downloading There are two methods which will be explained later The reverse process when waypoints are copied from another GPSPlus display is called uploading 10 MARK FEATURE INSTANT WAYPOINTS The Mark feature allows 20 waypoints to be entered by using a single key the MARK key This enables pots drift nets and other points of interest along your present course to be instantly memorised Pressing the MARK key enters your present position as a MARK into a reserved area of the waypoint library These mark waypoints are automatically
17. pressed for a period of 30 seconds the SETUP sequence will be exited automatically The W STEP A knob increases values when turned clockwise and decreases values when turned anti clockwise To end any SETUP sequence and return to normal operation press any key except ENTER or the w STEP A knob ENTERING WAYPOINTS BY LATITUDE AND LONGITUDE NDE USEd ENTER MPT 1 WPT MOB um CO Em ENTER ENTER 1 Select a point on a 2 Press the SETUP key 3 Press the ENTER key 4 Press the ENTER key chart determine the Turn the W STEP A knob The DEGREES of latitude The MINUTES of latitude latitude longitude to select an empty WPT will flash will flash Press the WPT MOB key number Use the W STEP A knob Use the W STEP A knob to change the degrees to change the minutes 5058 50 5B Be im 5D 5B B2 1 27 825 B25 2182512 NTER om com 5 Press the ENTER key 6 Press the ENTER key 7 Press the ENTER key The 10ths and 100ths of The 1000ths of MINUTES The Nor S will flash MINUTES will flash will flash Use the W STEP Use the W STEP A knob Use the W STEP A knob A knob to change the to select or to change the value value 5058 2 INH 5058 82 N 50 58 JN A 1 BES Wwe Vee 82S Wwe 21 825 ENTER 8 Press the ENTER key 9 Press the ENTER key 10 Press the ENTER key The DEGREES of The MINUTES of longitude The 10ths and 100ths of longitude will flash will flash MI
18. shows PLANNING PAGE FROM and TO will be showing on the text display FROM will flash PLANA ING PAGE BUOY TO vSTEPa LC I m ccs ENTER 2 Turn the W STEP A knob to cycle through the waypoints in the library until the desired waypoint is displayed e g BUOY Press the ENTER key to select the displayed waypoint TO will now flash PLANNING PAGE JUDY FISHIN 3 Turn the W STEP A knob to select the other waypoint from the library e g FISHIN Press the ENTER key to select the displayed waypoint 1 5nM brb g 19 BUDY FISHIN 4 The display will now show the inter waypoint range and bearing The waypoint name or number will continue to flash so that other selections can be made 28 DEFINING A ROUTE The route in the diagram on the previous page is used in the following example When the waypoint library has been set to sort by name the display will only show the first six characters of any named waypoint If the waypoints in your library have not been named then the waypoint number will be shown e g W007 When sort by number is selected then the WP number is displayed F UEE NOE Us d 1 Press the ROUTE key Select a route to define using the W STEP A knob FOUEE 2 Press the SETUP key to begin route entry END will flash When the right side of the text display is flashing waypoints can be selected from the library The s
19. the ROUTE key until ROUTE is displayed Select the route to be edited from the route library with the W STEP A knob 2 Press the SETUP key and turn theW STEP A knob to list the route leg by leg 3 When the leg to be edited is displayed press the ENTER key 4 The waypoint name or number will now flash 5 Turn the W STEP A knob until the word INSERT or DELETE is displayed 6 Press the enter key to INSERT or DELETE a waypoint 7 f DELETE has been selected the displayed waypoint is immediately deleted so you must be sure The number of legs will now have decreased by one 8 If INSERT has been selected the W STEP A knob allows the waypoint library to be listed see DEFINING A ROUTE Press the ENTER key to select the waypoint to be inserted The number of legs will now have increased by one ADDING WAYPOINTS TO THE END OF A ROUTE 6 Press the ROUTE key until ROUTE is displayed Select the route to be edited from the route library with the W STEP A knob Press the SETUP key Turn the W STEP A knob until END is shown on the right of the text display Press the ENTER key END will now flash Turn the W STEP A knob to cycle through the waypoint library until the desired waypoint is displayed Press the ENTER key to select the displayed waypoint END will continue to flash allowing more waypoints to be added if required Press the ENTER key again to end route editing DELETING ROUTES FROM THE ROUTE LIBRARY Press the R
20. to go TTG Velocity made good VMG Estimated time of arrival ETA Bearings can be displayed in degrees with reference to True or Magnetic North and distances can be displayed in Nautical Miles Statute Miles or Kilometres The calculated values can be Rhumb Line or Great Circle The NAV key is also used to select the direction of the route either forwards or reverse This is the order in which the waypoints are used NOTES If when a route is selected or when following a route the display shows the message NAV FAULT it means that the target waypoints of the route have been deleted from the GPSPlus waypoint library To overcome this problem either redefine the route or re enter the deleted waypoint s When following a route the GPSPlus will continue to display navigational data after the vessel has passed the final waypoint The information will be based on the last waypoint until another waypoint or route is selected The displayed value for cross track error XTE is based on an extended line of the previous track When the GPSPlus is used in combination with a Network PILOT that has NMEA data being supplied to the PILOT Display via its NMEA interface the NAV key allows the GPSPlus to select the PILOT NMEA data for calculation of the displayed navigational data IMPORTANT NOTE If MARK waypoints have been used to create a route ensure that the MARK latitude and longitude is as you expect If the MARKs have been erased a
21. view the list of NMEA sentences and the current status ON or OFF Press the ENTER key when the display shows the required NMEA sentence mnemonic ON or OFF wvill now flash Use the W STEP A knob to change the status Press the ENTER key to memorise your setting NMEA CHECKSUMS NMEA Output checksum some older systems e g Hercules 390 do not accept this checksum data so this setup may need to be turned off 1 2 Press the POS key Press the SETUP key until C SUMS is displayed The current status is displayed The checksum is ON by default SEtUP C SUMS ON Press the ENTER key the C SUMS status ON OFF will now flash Use the W STEP A knob to select the required status Press the ENTER key to memorise your setting 49 DISPLAY TYPE The unit can be set to run an internal demonstration program useful for learning to operate the instrument 1 Press the POS key 2 Press the SETUP key until tYPE is displayed 3 Press the ENTER key the display will now flash 4 Use the W STEP A knob to select NORMAL or DEMO 5 Press the ENTER key to memorise your setting 50 PRESENT POSITION This allows the user to input present position in degrees of latitude and longitude It is only required for some LORAN C and DECCA receivers or when using the unit in DR mode Enter degrees of latitude and longitude 1 Press the POS key 2 Press the SETUP key until PRESENT POSITION is dis
22. waypoint Cross track error alternating with direction to steer Speed Over Ground and Course Over Ground alternating with Distance to target waypoint Bearing to Target Waypoint Direction to steer Right L Left ITE 7 SETS ma COG Course Over Ground SOG Speed Over Ground Bearing to Target Waypoint r Track to Right 4 Track to Left 1 On Track 9 NAV XTE Cross Track Error Distance to Target Waypoint NAV key PAGE 4 BEARING XTE TTG AND VMG Bearing to target waypoint Cross track error alternating with direction to steer Time To Go TTG in hours and minutes alternating with Velocity Made Good VMG target waypoint Bearing to Target Waypoint Direction to steer RS Right L TTG Time To Go Bearing to IBHDM Target Waypoint M Track to Right XTE Cross Track Error HT UG VMG Velocity Made Good NAV NAV key gt NN PAGE5 CTS XTE AND DISTANCE CTS Course to steer to target waypoint Cross track error alternating with direction to steer DIST Distance to the target waypoint in nautical miles CTS Course To Steer to Target Waypoint F Right L Left Distance to Target Waypoint Direction to steer CTS Course To Steer to Target Waypoint Track to Right 4
23. CONTENTS INTRODUCTION INTRODUCTION TO GPSPlus OPERATION OF GPSPlus INTRODUCTION SWITCHING ON INITIAL DISPLAYS USING THE LIGHTS KEY NOTES ABOUT ENTERING DATA USING THE POS KEY USING WAYPOINTS INTRODUCTION TO WAYPOINTS MARK FEATURE INSTANT WAYPOINTS MARK WAYPOINT TABLE MAN OVERBOARD MOB FACILITY VIEWING THE WAYPOINT LIBRARY ENTERING AND USING WAYPOINTS WAYPOINT BY LATITUDE AND LONGITUDE PRESENT POSITION AS A WAYPOINT ENTERING A WAYPOINT NAME COPYING FROM WAYPOINT TO WAYPOINT SORTING THE WAYPOINT LIBRARY WAYPOINT BY RANGE AND BEARING ERASING A WAYPOINT FROM THE LIBRARY OTHER WAYPOINT SETUPS Y Y O O O O USING ROUTES INTRODUCTION TO ROUTES VIEWING THE ROUTE LIBRARY DIAGRAM OF A SIMPLE ROUTE LISTING A STORED ROUTE ROUTE PLANNING PAGE DEFINING A ROUTE EDITING A STORED ROUTE OTHER ROUTE SETUPS NAVIGATION WITH GPSPlus INTRODUCTION TO NAVIGATION SELECTING A WAYPOINT OR ROUTE DISPLAYING THE NAV PAGES CHANGING THE CURRENT LEG OF A ROUTE SETTING UP THE GPSPlus INTRODUCTION TO SETUPS SELECTING THE RECEIVER INPUT TYPE WAYPOINT ARRIVAL ALARM AUTO ADVANCE RADIUS ANCHOR ALARM HDOP ALARM CROSS TRACK ERROR ALARM WAYPOINT ZONE ALARM NETWORK SYSTEM ALARMS SETTING THE CHART DATUM SETTING A USER DATUM SELECTING NMEA OUTPUT SENTENCES NMEA CHECKSUMS CONTENTS SETTING DISPLAY TYPE NORMAL DEMO MANUALLY SETTING PRESENT POSITION SETTING DISPLAY CONTRAST SELECTING TIME DATE DISPLAY SETTIN
24. G LOCAL TIME SETTING THE DATE SELECTING MAGNETIC OR TRUE BEARINGS MAGNETIC VARIATION AUTO MANUAL SELECTING THE DISTANCE UNITS COG AND SOG DAMPING BEARINGS RHUMB LINE GREAT CIRCLE CHANGING THE DISPLAY LANGUAGE MULTIPLE GPSP DISPLAY INSTALLATIONS GPSPlus INTERFACING TRANSFERRING WAYPOINT DATA DOWNLOADING VIA B amp G NETWORK DOWNLOADING VIA NMEA INTERFACE UPLOADING WAYPOINTS DOWNLOADING ROUTE DATA NMEA INTERFACING WITH GPSPlus NMEA CABLE CONNECTIONS NMEA OUTPUT NMEA OUTPUT SENTENCE LIST GPS Plus DIFFERENTIAL INFORMATION GPSPlus INSTALLATION INSTALLATION OF THE DISPLAY UNIT INSTALLATION OF THE ANTENNA UNIT ROUTING THE GPS ANTENNA CABLE APPENDIX CHART DATUM LIST 64 64 65 67 68 68 INTRODUCTION TO GPSPLus The GPSPlus display unit processes the information from its accurate 12 channel GPS antenna receiver unit or from an additional LORAN C or DECCA receiver The unit can select between either of the two input devices to display accurate positional information along with waypoints routes and information concerning GPS satellites LORAN C T D s or DECCA L O P s GPSp us DISPLAY UNIT GPS pus 50 58 82 fii LIGHTS ENTER The GPSPlus display unit s six keys and control knob have the following operating functions and features POS key Positional Data e Position as Latitude and Longitude to three decimal places Course and Speed over the ground COG amp SOG Universal Time Co ordinate U
25. ING DATA When a number or name is flashing the W STEP A knob can be turned to alter the flashing display without the need to press any other keys To select the value that is currently flashing press the ENTER key When in a SETUP mode if a key has not been pressed for a period of 30 seconds the SETUP sequence will be exited automatically The W STEP A knob increases values when turned clockwise and decreases values when turned anti clockwise To end any SETUP sequence and return to normal operation press any key except ENTER or the Y STEP A knob USING THE POS KEY Press the POS key to display the following pages PAGE1 PRESENT POSITION Course Over Ground F OG 99499M Speed Over Ground GAG B UTC or one of the Litre Du 12 30 options described below Eu POS key Magnetic Legend Knots Legend ue 13 7 ZU POS The text line at the bottom of the display shows different information depending upon which type of position fixer is being used for positional data Text display variations are as follows HDOP A figure of merit where the lower the number the better the accuracy of the fix GPS only This is the normal display when using the GPSPlus system GPS Some GPS receivers do not output HDOP data GPS DIF Differential GPS LORAN C Present position from Loran C chain DECCA Present position from Decca chain II Integrated Instruments GPS DR The unit has
26. If the MARKs have been erased and then re entered by pressing the MARK key the MARK latitude and longitude will have changed and the route could be entirely different THIS COULD ENDANGER YOU YOUR CREW AND YOUR VESSEL CHECK BEFORE YOU ENGAGE THE ROUTE It is suggested that you use a table to record your MARK waypoints it will help you identify and record them in the future The following pages could be copied for this purpose or a table of your own design could be used 11 MARK NUMBER MARK POSITION MARK PREFERENCE MARK INFORMATION LAT TIME MARKO01 WPT 231 LONG E DATE LAT TIME MARKO02 WPT 232 LONG DATE LAT TIME MARKO03 WPT 233 LONG DATE LAT TIME MARKO04 WPT 234 LONG DATE LAT TIME MARKO05 WPT 235 LONG DATE LAT TIME MARKO07 WPT 237 LONG DATE LAT TIME MARKO08 WPT 238 LONG DATE LAT TIME MARKO09 WPT 239 LONG DATE LAT TIME MARKO06 WPT 236 LONG DATE LAT TIME H MARK10 WPT 240 LONG DATE 12 MARK NUMBER MARK POSITION MARK PREFERENCE MARK INFORMATION LAT TIME MARK11 WPT 241 LONG E DATE LAT TIME MARK12 WPT 242 LONG DATE LAT TIME MARK13 WPT 243 LONG DATE LAT TIME MARK14 WPT 244 LONG DATE LAT TIME MARK15 WPT 245 LONG DATE LAT TIME MARK17 WPT 247 LONG DATE LAT TIME MARK18 WPT 248 LONG DATE LAT TIME MARK19 WPT 249 LONG DATE LAT TIME MARK16 WPT 246 LONG DATE LAT TIME MARK20 WPT 250 LONG DATE 13
27. N 1927 Alaska ALASKA NA NORTH AMERICAN 1927 Bahamas BAHAMA Island NA SAN NORTH AMERICAN 1927 San Salvador SALVA Island NA NORTH AMERICAN 1927 Canada CANADA Newfoundla nd Island NA CANAL NORTH AMERICAN 1927 Canal Zone INDIAN Bangladesh India Nepal IRELAND IRELAND 1965 Ireland 1965 ISTS 073 ISTS 073 ASTRO 1969 AST JOHNSTON JOHNSTON ISLAND 1961 Johnston IS Island KANDAWA KANDAWALA LA KERGUELE KERGUELEN ISLAND Kerguelen NIS Island 1948 Malaysia Singapore ASTRO Brac Island 1964 MINDAN Island LUZON LUZON Phillippines PHILLIP excluding Mindanao MAHE 1971 MAHE 1971 Mahe Island ZON 70 NORTH AMERICAN 1927 NORTH AMERICAN 1927 NORTH AMERICAN 1927 Caribbean Barbados Caicos Islands Cuba Dominican Republic Grand Cayman Jamaica Leeward Islands Turks Islands Central America Belize Costa Rica EI Salvador Guatemala Honduras Nicaragua Cuba N AMERICA NORTH AMERICAN 1983 Alaska 83 Canada Central America CONUS Mexico OBSERVAT OBSERVATORIO 1966 Corvo ORIO Flores Islands Azores OLD OLD EGYPTIAN Egypt EGYPTIAN OLD OLD HAWAIIAN Mean Value HAWAIIAN OMAN OMAN Oman ORDNANCE SURVEY OF England GB 1936 Isle of Man Scotland Shetland Islands Wales NORTH AMERICAN 1927 NORTH AMERICAN 1927 Greenland Hayes Peninsula Mexico PICO LAS PICO DE LAS NIEVES Canary Islands PITCAIRN PITCAIRN ASTRO
28. NUTES will flash Use the W STEP A knob Use the W STEP A knob Use the W STEP A knob to change the degrees to change the minutes to change the value 5058 82 5058 82 AE T el MES ENTER WPT 220 12 Press the ENTER key 13 Press the ENTER key 14 Press the WPT MOB The W or E will flash Use The waypoint setting will key to view the waypoint the W STEP A knob to be stored in the library library select W or E 5058 82 14 2 1 Bean v CO CoO Co O L ENTER 11 Press the ENTER key The 1000ths of MINUTES will flash Use the W STEP A knob to change the value PRESENT POSITION AS A WAYPOINT NOE USEd 50 58 82 Ne NWPT W 27 ENTER WPT H NTER WPT H WPT MOB ENTER 1 Press the WPT MOB 2 Press the SETUP key 3 Press the ENTER key 4 Press the POS key the key Use the A STEP W knob The DEGREES of latitude present position is now to select a WPT number will flash entered into the selected library location ENTERING A WAYPOINT NAME 1 Press the WPT MOB key Use the W STEP A knob to view the waypoint library 208 ENTER 5 Repeat stages 3 and 4 until all characters have been entered including blanks 2 Press the SETUP key twice The display will show NAME WPT ZZ Use the W STEP A knob to select a WPT number SEEUP NAME WPT E EE O C ma ENTER 6 When the last character entered the has been display will return to
29. OUTE key until ROUTE is displayed Press the SETUP key twice The display will show ERASE and ROUTE Y The route number will flash Turn the W STEP A knob to cycle through the route library until the desired route is displayed Press the ENTER key the display will flash YES Turn the W STEP A knob to change the display to NO if you change your mind Press the ENTER key when YES is displayed to delete the route A DELETED ROUTE CANNOT BE UN DELETED OTHER ROUTE SETUPS The SETUP key has another function beyond the Route Erase function This function ROUTE DOWNLOAD is described in the GPSPlus Interfacing section of this handbook 32 NAVIGATION WITH GPSp tus The NAV key is used to give navigational information from your present position to a specific waypoint the target waypoint The target waypoint could be any waypoint in the waypoint library or a waypoint that makes up one the legs of a pre defined route It is necessary to select a waypoint or a route before the GPSPlus unit can calculate the data The target waypoint can be changed at any time so NAV information is available about any waypoint in the library The following navigational information is available when a target waypoint has been selected Location of waypoint Waypoint identity ID Bearing and distance from present position to waypoint Course to steer CTS Cross track error XTE Course over ground COG Speed over ground SOG Time
30. S AE Ew 63 INSTALLATION OF THE DISPLAY UNIT The display unit is supplied with a clip in mounting bracket which allows for easy installation Access from behind is not necessary to secure the unit in place However to prevent theft and permanently fix the unit in position locking studs and thumb nuts are supplied SITING THE UNIT The instrument is designed for mounting on or below deck A mounting position should be selected where it is Easy to read by the helmsman On smooth flat surface Atleast 100mm 4 from a compass Protected from direct splashes of water to the rear of the display case e Accessible from behind for fitting locking studs if required TOOLS REQUIRED 70mm 234 hole cutter 2 9mm 5mm drills Screwdrivers Measuring tape or rule e Cable clips or ty wraps MOUNTING THE UNIT Use the cutting template supplied to mark the centres of the holes for the self tapping screws the fixing stud holes and the mounting bracket The template allows 4mm 5 32 between adjacent units for the suncover Increase this distance if required to a maximum of 60mm 2 3 8 between units or 180mm 3 1 8 between centres For greater distances between units extension cables are available e Use a 70mm 2 3 4 diameter hole cutter for the mounting bracket hole Use a 2 9mm drill for the self tapping holes Use a 5mm drill for the locking stud holes e Secure the mount
31. TC local time and date Local sea current information direction and speed Satellite information LORAN C T D s DECCA L O P s Use with the SETUP key for setting and adjusting parameters WPT MOB MARK key Waypoint Man Overboard amp Mark e Waypoint library for up to 250 waypoints One touch Man Overboard MOB alarm with range and bearing to MOB event 20 One touch instant entry Mark waypoints Entry of waypoint latitude and longitude Entry of present position as a waypoint Name waypoints using up to 8 characters Copying from one library waypoint to another List and sort by waypoint name or number Entry by range and bearing from present position Erase waypoints from the library Download waypoints via NMEA interface Uploading waypoints from another NMEA position fixer Net download waypoints to another GPSPlus display unit e Use with the SETUP key for setting and editing waypoints NAV key Navigational Data The NAV key only gives navigational data when a waypoint or route sailplan has been entered and selected e Bearing and distance to waypoint Magnetic or True bearings Nautical or Statute miles Rhumb line or Great Circle calculations Course to steer CTS Cross track error XTE with off track and direction to steer indicator Time to go TTG to waypoint Velocity made good VMG to waypoint Estimated time of arrival ETA at waypoint Forward or reverse route selectio
32. The display will now flash the current alarm state Use the W STEP A knob to select ON or OFF NOTE The zone alarm is factory set to OFF Press the ENTER key to memorise your setting Repeat the above stages for each waypoint zone 46 NETWORK SYSTEM ALARMS The GPSPlus display has an internal buzzer that will sound when an alarm condition is met on a Network unit that has alarm functions Network DEPTH and Network QUAD for depth alarms and Network PILOT for Watch Alarm and Off Course alarms The unit will also display which alarm is activated To silence the internal alarm and return the display to normal operation press any of the keys DEPTH ALARM DISPLAY Depth alarms can be set for the following depth conditions e Shallow water e Deep water e Anchor Watch Check your Network DEPTH or QUAD unit to see which alarm is activated NETWORK PILOT ALARM DISPLAYS WATCH ALARM The Watch Alarm is a count down timer with is activated at the end of the preset count down period The EM display alternates between the ALARM messages above WATCH EH EB OFF COURSE ALARM The Off Course alarm is activated when the boat deviates off course by a preset amount The display alternates between the messages COURSE above OFF EN 47 SETTING THE CHART DATUM The chart datum
33. allocated the waypoint library names MARKO01 to MARK20 and are waypoint numbers WPT 231 to WPT 250 To enter a mark simply press the MARK key twice 5858 82 N The first press will display the waypoint C1 025 library the second and further presses gg enter the MARKS This can be carried _ out 20 times QJ 9 After all 20 mark library locations have Ae been used the LCD wil show ULL 22 MARKFULL e MODE MARK _ Mark waypoints can be used exactly like any other waypoint that you have entered using the methods described in the following pages If the Marks are of particular interest then it is good practice to copy them to other waypoint library locations name them for easy identification and then erase the original MARK By erasing the original more MARKs can then be entered because once the MARK library locations are full no more MARKs can be entered These procedures are explained in this section of the handbook MARKs can be used to define a route If on a passage you enter MARKs into the library and then use them in the correct order to define a route they can be used in reverse to lead the way home These procedures are explained in USING ROUTES later in this handbook IMPORTANT NOTE II MARK waypoints have been used to create a route ensure that the MARK latitude and longitude is as you expect
34. ata is copied between GPSPlus displays via the B amp G Network 2 Downloading Via NMEA Interface Waypoint data can also be transferred to other NMEA devices This is accomplished via the GPSPlus display NMEA interface cable The waypoints to be downloaded are selected one by one and then transferred as a complete block of data in an NMEA sentence IIWPL UPLOADING Uploading of waypoints is accomplished via the secondary NMEA device socket on the rear case of the GPSPlus display and cable directly from the position fixer selected All waypoints are transferred until the ENTER key is pressed to terminate uploading The following procedures accomplish data transfer 58 DOWNLOADING VIA B amp G NETWORK When downloading in this manner the waypoints are transferred via the B amp G Network interconnecting cables as Network data The waypoints are downloaded as one complete block of data 1 Press the WPT MOB key 2 Press the SETUP key nine times The display will show SEtUP NET DOWNLOAD 3 Press the ENTER key The display will show SEtUP SENDING 250 The number of waypoints downloading will be displayed counting down from 250 NOTE This method of transfer will automatically terminate when all waypoint data has been copied or when a waypoint with the same name as another already in the waypoint library is received It is possible that the GPSPlus will display DATABASE FAULT and WAYPOINT lt name number gt Thi
35. by your position when the alarm is selected to ON If the boat should drift OUTSIDE the predetermined radius the alarm will sound Press any key to silence the alarm ANCHOR ALARM RADIUS POINT WHEN ALARM WAS ALARM TURNED ON ANCHOR In the example above the vessel can drift anywhere in the shaded area determined by the alarm radius When the vessel moves from point A to point B the alarm will sound 42 SETTING THE ANCHOR ALARM 1 Press the POS key 2 Press the SETUP key until AnCHOr AL is displayed SEIUP AnCHOr AL OFF 3 Press the ENTER key the display will flash the current anchor alarm radius 4 Use the W STEP A knob to alter the value in the range 0 01 to 9 99NM NOTE The value is factory set to 1 00NM Due to external factors this alarm may not be reliable below 0 05NM The value will be displayed in Statute Miles or Kilometres if those units have been selected 5 Press the ENTER key to memorise your setting The display will now flash the current alarm state 6 Use the W STEP A knob to select ON or OFF NOTE The anchor alarm is factory set to OFF 7 Press the ENTER key to memorise your setting To change the alarm state without adjusting the radius miss out step 4 HDOP ALARM As in all radio navigation systems the accuracy is affected by the geometry of the situation Probably the most familiar examples of this toda
36. ding NOTE Uploading will stop automatically if a waypoint having the same name as one already in the GPSPlus library is uploaded DOWNLOADING ROUTE DATA When multiple GPSPlus displays are used it may be necessary to copy the route data that is all the waypoint data stored in a route between displays This procedure is similar to copying the waypoint library as previously explained and is also called downloading 1 Press the ROUTE key until ROUTE is displayed 2 Press the SETUP key three times The display will show DOWNLOAD ROUtE 1 USEd DOWNLOAD 3 Press the ENTER key to download the route data NOTE It is possible for the GPSPlus to display an error message DATA FAULT when downloading routes This indicates two routes with the same route number exist If this occurs erase one of the routes or redefine another route using the same waypoint data 60 NMEA INTERFACING WITH GPSrPLus The two sockets on the rear case of the GPSPlus display are NMEA input output connectors for position fixing instruments radar sets autopilots and other devices requiring NMEA interfacing The connectors allow bi directional data communication using the NMEA 0183 v1 5 protocol This allows input of positional data latitude and longitude and other position fixer information e g satellite data into the GPSPlus display unit for displaying and output of control sentences including waypoint data to a position fixer
37. ds CAPE CAPE South Africa CAPE CAPE CANAVERAL Florida CANAVER Bahama Islands ASCEN s Sere eee ca 300 CARTHAGE CARTHAGE BECON E Island a ew AST B4 S ASTRO B4 SOROL Tern Island CHAU CHAU ASTRO TER ATO ATOLL ASTRO 68 ALEG DJAKARTA DJAKARTA BATAVIA Sumatra mn gi Indonesia DOS 1968 Gizo Island New Georgia Islands Easter Island EASTER IS EASTER ISLAND 1967 EUROPEAN EUROPEAN 1950 Austria 50 Belgium Denmark Finland France Germany Gibraltar Greece ltaly Luxembourg Netherlands Norway Portugal Spain Sweden Switzerland EUROPEAN EUROPEAN 1979 Austria 79 Finland Netherlands Norway Spain Sweden Switzerland FINLAND FINLAND HAYFORD 1910 GANDAJIK GANDAJIKA BASE Republic of A Maldives GEODETIC GEODETIC DATUM 1949 New Zealand 49 GUAM 1963 GUAM 1963 Guam Island GUX 1 GUX 1 ASTRO Guadalcanal ASTRO Island HJORSEY 1955 Iceland HONG KONG 1963 Hong Kong INDIAN INDIAN Thailand VIETN Vietnam 69 MARCO MARCO ASTRO Salvage LIST OF CHART DATUMS ASTRO Islands MASSAWA MASSAWA Eritrea Ethiopea MERCHICH MERCHICH Morocco MIDWAY MIDWAY ASTRO 1961 Midway ASTRO Island MINNA MINNA Nigeria NAHRWAN NAHRWAN Masirah OMAN Island Oman NAHRWAN NAHRWAN United Arab UAE Emirates NAHRWAN NAHRWAN Saudi Arabia SAUD NAPARIMA NAPARIMA BWI Trinidad and BWI Tobago NA CONUS NORTH AMERICAN 1927 Mean value CONUS NA NORTH AMERICA
38. ected for the previous page PAGE 4 CURRENT FLOW Direction of Current Magnetic Legend Speed of Current Knots Legend I IILIIIL L LIVES IV POS POS key mn The local influences of sea current on the vessel Direction of sea current in degrees Magnetic M or True T Speed of sea current in knots KTS kilometres hour KPH or miles hour MPH NOTE This information can only be displayed when the GPSPlus is receiving speed and heading data from an integrated Network System PAGE5 RECEIVER INFORMATION PAGES One of three different pages will be displayed depending upon the receiver selected GPS SATELLITE INFORMATION Satellite elevation H ype Satellite azimuth Signal to noise ratio Jed I Satellite PRN 13 21 CIL The selected satellite and total l I I LII IC 2 number of satellites in view POS gt MM The fifth POS key page displays information about the receiver that has been selected to supply positional data see SETUPS ON THE GPSPlus to select different receiver inputs Data can be displayed about each satellite being tracked by the GPSPlus Satellite signal to noise ratio is displayed in dB the higher the number the better the signal strength The satellite number is the satellite transmitted PRN When the SETUP control knob is turned inf
39. ercome this either redefine the route without the waypoint or re enter the erased waypoint Below is a diagram of a simple route that will be used in this section to demonstrate the use of the GPSPlus route facilities 26 DIAGRAM SHOWING A SIMPLE ROUTE LISTING THE WAYPOINTS OF A STORED ROUTE FOUVEE FISHIN ENT L r DURE Fx LEL LV JUDY FIGHIN HUE LEL MOGRING dos v FOUEE ot F ULE pr Se USEd LEG MOCRIN FIGHIN POS MDORIN v v v simple table as shown below can be very helpful when m planning a route The latitude and longitude of each waypoint could be added if required Press the ROUTE key and Press the SETUP key and turn the W STEP A knob to turn the Y STEP A knob to ROUTE LEG FROM view the route library The list the route LEG by LEG LEG 0 PPOS MOORING first and last waypoint present position name or numbers are LEG 1 MOORING BUOY displayed on the text line LEG 2 BUOY FISHING 2f ROUTE PLANNING PAGE WAYPOINT TO WAYPOINT RANGE AND BEARING The GPSPlus display PLANNING PAGE allows the range and bearing to be calculated between any two library waypoints This facility is very useful when planning a route PLANA INE 1 Press the ROUTE key until the display
40. ere a leg is the passage from one waypoint to another You can have up to 10 routes stored in the GPSPlus and up to 40 waypoints in each route A route is defined leg by leg by recalling waypoints from the waypoint library and storing them in the route It is important to remember that a leg is a straight line drawn between two waypoints it does not recognise any obstruction in the way such as land shallow water wrecks or other vessels When planning your route take careful note of any navigational obstructions including high and low water marks It is possible to select the direction of travel along your route either forward or reverse and then miss out a complete leg if required This will be explained later in the Navigation With GPSPlus section of this handbook VIEWING THE ROUTE LIBRARY SEL FOUEE A FDUEE IC NOE U5 d v pa FDUEE IC NOE U5 d ROUTE Press the ROUTE key Turn the W STEP A knob When the W STEP A knob is turned the ten routes will be listed by number from 1 to 10 as USED or nOt USEd depending upon the current state If the text line of the LCD shows NULL WPT where is a number from 7 to 250 it indicates that waypoint has been erased from the waypoint library and therefore the route is now invalid To ov
41. for a fix and the WAIT message will only be displayed momentarily If after a period of 15 minutes the display still shows NO DATA then check your installation If everything seems to be in order consult your dealer The GPSPlus system requires only three satellites to obtain a fix When the unit has obtained a fix in GPS mode the display will show the following SN B amp G GPS 5058 80 i Bos anna an ess III LII IM a If the GPSPlus display has not been programmed with any navigational data i e waypoints or routes only the POS key gives useful information Your GPSPlus has the ability to be used with a secondary position fixing device either a LORAN C or a DECCA The unit will initially power up using its own GPS antenna receiver unit Selecting LORAN C or DECCA receiver will be explained later in this manual Once selected the GPSPlus will always power up using the selected receiver USING THE LIGHTS KEY The GPSPlus display unit has 3 levels of illumination and off controlled by the LIGHTS key It also changes the illumination level of the key legends The LIGHTS key is always illuminated so even in complete darkness the key can be located LIGHTS e LIGHTS 0 OFF e LIGHTS 3 High e LIGHTS 2 Medium e LIGHTS 1 Low NOTES ABOUT ENTER
42. h automatic waypoint advance Anchor watch alarm HDOP alarm GPS use only Cross track error alarm Waypoint zone alarm The GPSPlus display will also repeat alarms from Network instruments when part of an integrated Network System Refer to the SETTING UP THE GPSPlus for details on setting and adjusting the alarms INTRODUCTION After installation the GPSPlus can be used immediately with minimal setting up for basic operation To use the advanced features of the GPSPlus display it is necessary to program various parameters and enter waypoints and routes into the units library These will be discussed in later sections of this handbook SWITCHING ON The GPSPlus will power up and start receiving and processing the signals from the satellites when the switch or contact breaker for your instruments supply is turned on The display unit does not have an ON OFF switch INITIAL DISPLAYS On power up the unit will show its satellite receiving status dHER dRER WAIT ig SATS NG SAT BATA ca Et C L I EA CJ E a a 2 WAIT GATS When a brand new unit is powered up for the first time or if the unit has moved more than 1500km since it was last powered up it may take up to an hour to acquire enough satellites for a fix On subsequent power ups the GPSPlus should quickly obtain enough satellites
43. ing bracket to the bulkhead with the self tapping screws supplied e Fit the rubber sealing gasket around the mounting bracket Screw the locking studs into the back of the display head if required for security locking e Carefully pass the cable tails through the mounting bracket hole connect the plugs and sockets to sensor cables power cable and other Network display units as required Clip the display head into the mounting bracket it is a snug fit Secure the instrument with the thumb nuts supplied if required 64 INSTALLATION DATA GPSptus Display Unit Side view of unit Rear view of unit 110mm 36mm T 65mm I B amp G au T Locking stud fixing NMEA Receiver Socket m m E Secondary NMEA Device Socket WPT MOB ROUTE LIGHTS Q E Network Network Power connector connector Mounting Bracket 820 Rubber Gasket N Gasket Display Unit Sun cover fit around the mounting bracket Bulkhead Gasket SOT Mounting Self tapping screws Z 65 INSTALLATION OF ANTENNA UNIT CHOOSING A LOCATION Select a suitable site for the antenna unit with reasonable consideration of the following points As close as possible to the vessel s deck which has a relatively unobstructed view of the horizon e Avoid areas where
44. key three times The display will show the current leg number of the selected route e g CURNT LEG 0 SEEUP FOUEE ICI LLII IV LEG v ST EPA CO CO c rr mE ENTER 3 Press the ENTER key the leg number will flash Use the W STEP A knob to select a different leg number SEEUP FOUEE 1 LURNT LED O ENTER 4 Press the ENTER key to memorise the selection The NAV key will now display information about the new leg 38 INTRODUCTION TO SETUPS ON THE GPSPLUS The GPSPlus has many parameters that can be set if the user wishes some of these are alarms The sequence for adjusting or setting these parameters and alarms is similar in every case only the displayed information is different The SETUPs are arranged in a continuous list that you can cycle through using the SETUP key For a full description of each SETUP with its selectable parameters please refer to the table at the end of this section A short cut method allows you to start cycling through the list from a different entry point determined by the POS display The following list illustrates this principle With this POS 56 58 82 N displayed the SETUP list 27 825 starts from INPUT 23 GPS INPUT AUTO ADV RADIUS ANCHOR AL HDOP ALRM CROSS TRK ZONE AL DATUM USER DATUM With this POS page displayed the SETUP list starts from DISPLAY With this POS page displayed the SETUP list starts from BEARINGS With
45. knob change the damping Press the ENTER key to memorise the setting CALCULATION METHOD FOR BEARINGS This setup is the method used by the unit to calculate bearing and distance in NAV mode The unit can be set to use either Rhumb Line or Great Circle Select the one most suitable for your navigational needs 1 2 Press the POS key Press the SETUP key until bEArInGS is displayed The current setting will also be displayed SEtUP bEArInGS RHUMB LINE Press the ENTER key the display will now flash Use the A STEP V knob change the setting Press the ENTER key to memorise the setting 55 CHANGING THE DISPLAY LANGUAGE Changes the display language format from English to French All displays will be in the language selected By default the setting is English 1 Press the POS key 2 Press the SETUP key until LANGUAGE is displayed The current setting will also be displayed SEtUP LANGUAGE ENGLISH 3 Press the ENTER key the display will now flash 4 Use the Y STEP A knob to change the setting 5 Press the ENTER key to memorise the setting 56 MULTIPLE GPS 5 DISPLAY INSTALLATIONS Installations with two or more GPSP displays fitted must select which GPSP display will receive the data When the GPSS displays and GPS antenna are powered up the display should show the following If the above is not shown then press the SETUP key until the following is displayed SEE UP nP ut rn
46. l or crossing alarm The alarm will sound and the display flash until a key is pressed then the next waypoint in the route will be selected NOTE When steering the boat with a Network PILOT the autopilot will not steer to the next waypoint until instructed to do so by the helmsman This is a safety feature Refer to the Steering to NMEA section of the PILOT owners manual SETTING AUTO ADVance FEATURE 1 Press the POS key 2 Press the SETUP key until AUTO ADV is displayed 41 WAYPOINT ARRIVAL CONT 3 Press the ENTER key OFF will now flash 4 Use the W STEP A knob to select ON or OFF NOTE The AUTO ADV feature is factory set to OFF 5 Press the ENTER key to memorise your setting SETTING AUTO ADVance rADIUS If you have not previously done so press the POS key 1 Press the SETUP key until rADIUS is displayed 2 Press the ENTER key the value will now flash 3 Use the W STEP A knob to alter the value in the range 0 01 to 9 99NM NOTES The rAdIUS value is factory set to 0 10NM If Statute Miles or Kilometres have been selected the value will be displayed in the appropriate units 4 Press the ENTER key to memorise your setting ANCHOR ALARM Although the name of this alarm implies use when at anchor it can be used to alert when drifting away from any specific point or waypoint The anchor alarm sets a circle of a specific radius around a point The latitude and longitude of the point is determined
47. n Use with the SETUP key for selecting target waypoint or route to be used for navigation ROUTE key Route defining and editing Route library for up to 10 routes with up to 40 waypoints per route e Route planning page gives range and bearing data between any two library waypoints Edit existing routes insert and delete waypoints from any selected route Download route data via NMEA Use with the SETUP key for defining and editing routes SETUP key Used with other keys for setting and adjusting data Refer to the SETUP section of the handbook for a full list of setups LIGHTS ENTER key Adjusts the illumination level and when used with the SETUP key memorises any setting and adjustments that have been made Y STEP A knob Selects and lists functions waypoints routes and is used to adjust values and data When a number or name is flashing the W STEP A knob can be turned to alter the flashing display Press the ENTER key to confirm your selection GPSPlus ALARMS The GPSPlus display has alarms that can be set and adjusted to suit your requirements When an alarm condition is met the internal alarm buzzer will sound and the display will indicate which alarm has been triggered When the GPSPlus is part of a fully integrated Network Instrument system the alarm conditions will be displayed and sounded by all Network display units The following alarms can be set and adjusted Waypoint arrival alarm wit
48. nd then re entered by pressing the MARK key the MARK latitude and longitude will have changed and the route could be entirely different THIS COULD ENDANGER YOU YOUR CREW AND YOUR VESSEL CHECK BEFORE YOU ENGAGE THE ROUTE 33 SELECTING OR CHANGING THE TARGET WAYPOINT OR ROUTE ng PLAN PRESS NAV CO SETUP EEE 1 Press the NAV key If the unit is not already NAVing nO PLAn will be displayed The text display will invite you to press SETUP SEE UP HR 2 Press the SETUP key the display will flash either NO PLAN or one of the displays shown in 3 SEE UP RR SEE UP HRr JPPDS ED FAI LI L I L I E p 3 Use the Y STEP A knob to select the waypoint or the route to be used for navigation The direction of the route is also selected by choosing ROUTE FWD or ROUTE REV when NMEA data is available the Network PILOT PILOT NMEA is also displayed SEE UP NAV 05 El ROUTE FWD BUM Co CO CO mm ENTER 4 Press the ENTER key to memorise the selection Pressing the NAV key will now display navigational information 34 DISPLAYING THE NAV PAGES Press the NAV key to display the following pages of navigational data PAGE1 SELECTED NAV DATA One of three different pages will be displayed depending upon whether a waypoint route or Pilot NMEA data is being used for NAV functions
49. not received valid data and is now using dead reckoning A speed and heading input are required from the Network System PAGE2 COG SOG and UTC vattude E SE 2 IN HDOP one of the 01 HIUP GPG LL TU III J options described below Longitude POS POS key 1 MB a Q Course Over Ground Speed Over Ground amp Universal Time Co ordinate UTC has taken over from GMT as the World Standard Time The data is displayed by default in the following units COG in degrees Magnetic M User selectable to True T SOG in Knots KTS User selectable to Miles per Hour MPH or Kilometres per Hour KH The text line can be configured to display different time and date information as follows LT Local Time this can be set as required DATE This can be set as required UTC DATE Alternating display of UTC and Date LT DATE Alternating display of Local Time and Date For details about changed the default displays please refer to the Setup section of this manual PAGE3 PRESENT POSITION COG AND SOG Latitude 50 5 2 IN Longitude 27 A852 Speed Over Ground 4 5 KTS 2509 1 Over Ground POS POS key Latitude and Longitude of present position on the main display and SOG and COG NOTE The displayed values for SOG and COG will be in the same units as sel
50. ormation is displayed about each satellite being tracked DECCA L O P AND CHAIN INFORMATION r ar Flashing Digits 7 OG e tH L O P indicate Decca slave L 30 Be Tl OP data R red G green P purple Current Chain Press POS key to m change pages Turn the STEP knob to display more L O P data Continue turning the knob to display a value in Nautical Miles of uncertainty UNCERT NOTE This is only displayed if the Decca Receiver outputs this value Turn the W STEP A knob to display more L O P data Continue turning the W STEP A knob to display the current chain or a value in Nautical Miles of uncertainty UNCERT if output by the Decca receiver on the LCD text line LORAN C T D INFORMATION Flashing Digits T D Pair Indentifiers SOG and COG Press POS key to change pages d ID 8 0 i Hr Letters A to F 230 0025 I Sorge BOW OGROM F Poor Turn the STEP knob to display more T D pairs Press POS to start the Press ENTER to stop the digits flashing again digits above from flashing The text line displays SOG and COG If the ENTER key is pressed the identifiers will stop flashing press the POS key to make them flash again Turn the t STEP s knob to display more T D pairs INTRODUCTION TO WAYPOINTS A waypoint is simply a point you wish to go to It can be an
51. played SEtUP PRESEnt POSITION 3 Press the ENTER key the display will now flash 4 Use the W STEP A knob and the ENTER key to enter the present position in degrees of Latitude and Longitude 0 00 000N 0 00 000E POSITION 5 Press the ENTER key to memorise your setting DISPLAY CONTRAST The contrast control can improve the display clarity Experiment to obtain the clearest display The default setting is 2 1 Press the POS key 2 Press the SETUP key until CONTRAST is displayed SEtUP CONTRAST 2 3 Press the ENTER key the display contrast value will now flash 4 Use the W STEP A knob to select the required contrast level in the range Oto 3 5 Press the ENTER key to memorise your setting 51 TIME DATE INFORMATION SETTING LOCAL TIME The text line of the LCD can display different combinations The local time display can be corrected for the current time of time and date information zone UTC Universal time coordinate LT Local time user set 1 Press the POS key DATE Day date month and year 2 Press the SETUP key until LOCAL tIM is displayed UTC DATE Alternating display diio LT DATE Alternating display SEtUP LOCAL tIM 08 00 Press the POS key 2 Press the SETUP key until dISPLAY is displayed 3 Press the ENTER key the time in hours will now flash Use the W STEP A knob to adjust the hours 5 Press the ENTER key The time in minutes will now flash 6
52. point can be named if required 9 99nM FNG One pogen ENTER 106 Oo O E O CO ENTER 4 Press the ENTER key The bearing in degrees will flash Use the W STEP A knob to enter the bearing from 000 to 359 22 ERASING A WAYPOINT FROM THE LIBRARY 5I 5B Be el aie JUD LJ CoO Co WPT MOB 1 Co Co Press the WPT MOB key 2 Press the SETUP key six times the display shows ERASE Use the W STEP A knob to select the waypoint If the waypoints have names these will be displayed 3 Press the ENTER key YES will flash Use the W STEP A knob to select YES to erase or NO to select another waypoint m 4 Press the ENTER key to erase the selected waypoint when YES is displayed If the knob is turned another waypoint can be selected for erasure or press the WPT MOB key to return to the library 23 OTHER WAYPOINT SETUPS The SETUP button has other waypoint facilities beyond the Waypoint Erase function Three more waypoint functions are available as follows 1 DOWNLOAD WPT 2 UPLOAD WPTS 3 NET DOWNLOAD These functions are used when transferring waypoint data between other GPSPlus units and NMEA devices They are described in the GPSPlus Interfacing section of this handbook 24 INTRODUCTION TO ROUTES A route sometimes called a sailplan is simply a list of waypoints in the order that you intend to travel along them It is made up of legs wh
53. s factory set to 4 0 Press the ENTER key to memorise your setting The display will now flash the current alarm state Use the W STEP A knob to select ON or OFF NOTE The HDOP alarm is factory set to OFF Press the ENTER key to memorise your setting To change the alarm state without adjusting the limit miss out step 4 44 CROSS TRACK ALARM The Cross Track Error Alarm is triggered when the vessel strays to the left or right of the course line drawn between the last waypoint and the next waypoint in a route by more than a preset distance in other words if the Cross Track Error XTE value is larger than the value set PG CROSS TRK ALARM LIMIT TUM WPT 1 Uem BUOY A SETTING THE CROSS TRACK ERROR XTE ALARM 7 Press the POS key Press the SETUP key until CrOSS trK is displayed SEtUP CrOSS trK OFF Press the ENTER key the display will flash the current cross track error alarm limits Use the W STEP A knob to alter the value in the range 0 01 to 9 99NM NOTE The value is factory set to 1 00NM The value will be displayed in Statute Miles or Kilometres if those units have been selected Press the ENTER key to memorise your setting The display will now flash the current alarm state Use the W STEP A knob to select ON or OFF NOTE The waypoint zone alarm is factory set to OFF Press the ENTER key to
54. s indicates that there are two different waypoints with the same number Erase or copy one of the waypoints to another unused library location if this occurs DOWNLOADING VIA NMEA INTERFACE When downloading in this manner it is necessary to use a special NMEA output cable part number 610 OA 038 available from your dealer This cable is connected to the secondary NMEA device socket of the GPSPlus display unit The waypoints to be downloaded are selected one by one 1 Press the WPT MOB key 2 Press the SETUP key seven times The display will show SEtUP DOWNLOAD WPT 3 Press the ENTER key The display will show The name of a waypoint for downloading will be displayed and the WPT number will be flashing 4 Use the W STEP A knob to select a waypoint 5 Press the ENTER key to download the displayed waypoint 6 Repeat 4 and 5 until all the waypoints are transferred 59 UPLOADING WAYPOINTS Uploading of waypoints is accomplished via the secondary NMEA device socket and cable directly from the position fixer selected All waypoints are transferred until the ENTER key is pressed to terminate uploading 1 Press the WPT MOB key 2 Press the SETUP key eight times The display will SEtUP UPLOAD WPTS show 3 Press the ENTER key The display will show SEtUP UPLOADING 1 The number will increase indicating the total number of waypoints transferred so far 4 Press the ENTER key to terminate uploa
55. screws in the underside The lower part can be discarded leaving the GPS antenna with a flat base which can be mounted on a cabin top or A frame If you choose this mounting option secure the GPS antenna from underneath using 4 x M3 machine screws Care should be taken to trim overlong screws so no more than 7 turns of the thread are inside the GPS antenna 66 ROUTING THE GPS ANTENNA CABLE The GPS antenna unit is supplied with a 9 metre 30ft shielded multicore cable The cable should be routed to the GPSPlus Display unit junction box and then cut to length For connection details refer to the installation sheet supplied with your system When routing the antenna cable consideration should be given to the following guidelines AVOID Sharp bends or kinks in the cable Hot surfaces e g exhaust manifolds or stacks Rotating or reciprocating equipment Sharp or abrasive surfaces Door hatch and window jambs Corrosive fluids or gases 67 LIST OF CHART DATUMS 71 4 Island IC S 1952 Island AUSTRALIA AUSTRALIA GEODETIC Australia 84 1984 BELLEVUE BELLEVUE IGN Efate Islands Islands 1957 Islands BOGOT BOGOTA Colombia Oeseav omsenvaronv _ DATUM COUNTRIES pru _ Ethiopia Mali Senegal Sudan EL ABD EL ABD 1970 s ES ASTRO Islands ARC 1950 Botswana Lesotho Malawi Swaziland Zaire Zambia Zimbabwe ARC 1960 ARC 1960 Kenya Tanzania INCHAU ASTRO Islan
56. shing number below the WPT legend indicates which library location is being viewed 1 to 250 By turning the V STEP A knob the flashing number will change selecting each waypoint library location in turn If the library location is empty nOt USEd will be displayed When a waypoint library location has been used the latitude and longitude of the waypoint in displayed in degrees and minutes The waypoint name will be displayed to the left of the WPT number If it has no name then a number with a leading W will be displayed e g W001 h 50 58 82 i SD SB B2 N 21 82 5i KER ELT MARKO I WOOD I AN WPT MOB 0 Q E 23 ET ENTERING AND USING WAYPOINTS The following pages describe how to use the many waypoint functions in the order they are listed when the SETUP key is pressed The method of entering and changing data is described in words and diagrams These will give you an indication of what you might expect to see B amp G reserves the right to change the operation of the instrument without prior notice so variation may occur NOTES ABOUT ENTERING WAYPOINT DATA e When a number or name is flashing the W STEP A knob can be turned to alter the flashing display without the need to press any other keys When in a SETUP mode if a key has not been
57. tart of a route is always from your present position PPOS 3 Turn the W STEP A knob to cycle through the waypoints in the library until the desired waypoint is displayed e g MOORIN 4 Press the ENTER key to select the displayed waypoint The selected waypoint will now appear on the left of the display 29 5 Turn the W STEP A to select the next waypoint BUOY FOUEE FISHIN EN LI L I L I COD Cl ma ENTER 7 9 Press the ENTER key again to complete the route definition FOUEE 6 Press the ENTER key to accept waypoint BUOY into the route 10 Press the ROUTE key the display will now show ROUTE 1 USED and the start and end waypoints 7 Turn the W STEP A to select the next waypoint FISHIN This waypoint is the last waypoint in this route FOUEE FISHIN EN 8 Press the ENTER to select FISHIN into the route END will flash 30 EDITING A STORED ROUTE Any stored route in the route library can be edited Waypoints can be inserted into or deleted from any leg of your defined route or simply added on to the end There is also facility to delete the entire route from the route library If all the waypoints are deleted the route will be listed as nOt USEd when the route library is viewed To edit a leg of a route proceed as follows INSERTING AND DELETING WAYPOINTS IN A ROUTE 1 Press
58. the W STEP A knob to list all the GPSPlus output sentence mnemonics By default all are OFF except RMB and RMC 4 Press the ENTER key when the desired sentence is displayed ON or OFF will flash 5 Use the W STEP A knob to change the flashing display 6 Press the ENTER key to memorise the setting 7 Repeat until all the required sentences are set NMEA OUTPUT SENTENCE LIST The following is a list of all the NMEA output sentences available from the GPSPlus display unit including the initial setting The SETUP key allows selection of each sentence as ON or OFF allowing custom interfacing as required by the end user APB Autopilot sentence B OFF BOD Bearing Origin to destination OFF BWC Bearing and distance to waypoint great circle OFF BWR Bearing and distance to waypoint rhumb line OFF DBT Depth Below Transducer OFF DTM Chart datum OFF GL2 Geographic Latitude and Longitude NMEA V2 0 OFF GL1 Geographic Latitude and Longitude NMEA V1 5 OFF RMA Recommended minimum specific Loran C OFF RMB Recommended minimum navigation information ON RMC Recommended minimum navigation GPS ON VDR Tidal Set and Drift OFF VHW Heading and water speed OFF VLW Distance Travelled through the Water OFF VTG Actual track and ground speed OFF VWR Wind bearing relative and speed OFF VWT True Wind speed and Angle OFF WCV Waypoint closure velocity OFF XTE Cross track error OFF ZDA UTC time and date OFF ZTG Time of arrival at waypoint OFF
59. the unit could become damaged e g where ropes or wires could become entangled e Avoid installing unit at the mast top this location accentuates the boat s motion Avoid areas of high vibration e g engine housings and radar installations Not within 60cm 2ft of other antennas e g VHF SSB Above or below a radar s cone of transmission e Below and at least 3m 10ft away from satellite communications equipment Dense wood or metal structures will shield the unit from satellite signals However stays masts and relatively dry sails will not interfere with reception The unit can receive signals through glass canvas and thin fibreglass for example a wheelhouse or saloon area however it would be advisable to try such a location before permanent fixture MOUNTING THE ANTENNA UNIT The GPS antenna unit may be pole mounted The threaded socket at the base of the unit will accept a 1 7 straight thread The GPS antenna unit only requires hand tightening on to the pole mount Over tightening with a tool could damage the threaded socket at the base of the unit The pole mounting arrangement of the GPS antenna unit makes it easy for you to remove and store it in a safe and secure place when not in use For permanent installation it is advisable to drill and pin the GPS antenna unit This will discourage theft and prevent accidental loosening Alternatively the GPS antenna can be split into two parts by removing the four
60. this POS page displayed the SETUP list starts from OUTPUT FOG 1842M UTC 02 15 38 DISPLAY LOCAL TIM DATE 50 59 90 IC 1805 UBbB BEARINGS AUTO MAG VAR DISTANCE COG SOG BEARINGS LANGUAGE dir 332 OM SPd 125 LURRENT FLOW OUTPUT C SUMS TYPE PRESENT POSITION CONTRAST 39 SELECTING THE RECEIVER INPUT TYPE If your GPSPlus system has a LORAN C or DECCA receiver connected to the second receiver socket on the rear of the unit this can be selected to give positional information All of the features and functions of the GPSPlus can be used with any of the receivers This allows you to select a different position fixer if one becomes unreliable or to compare accuracy of position 1 Press the POS key so HDOP is displayed on the text line 2 Press the SETUP key The display will show the current INPUT device 3 Press the ENTER key GPS will now flash Use the STEP A knob to change the INPUT device LORAN C DECCA 4 Press the ENTER key to memorise the new setting 5 After 30 seconds the display will return to present position or press the POS key to return instantly WAYPOINT ARRIVAL ALARM The waypoint arrival alarm is always active i e it CANNOT be disabled It is used in conjunction with the auto advance function The auto advance function is used to automatically select the next waypoint in
61. y is the practice of avoiding small crossing angles in Loran C or Decca lines of position LOP These hyperbolic systems operate with fixed site transmitters so the angles are constant at any particular location GPS uses moving transmitters satellites and therefore the geometry or crossing angles are constantly changing In 2 dimensional GPS navigation the lines of position are moving circles on the Earth s surface that are at all points equidistant from a satellite The effects of geometry on accuracy can be summarized in a single number called the Horizontal Dilution of Precision HDOP The accuracy obtainable from a particular set of satellites is equal to the pseudo range measurements multiplied by the HDOP In order to avoid extra ordinary errors due to short periods of very poor geometry the GPSPlus software will not use satellite constellations with an HDOP higher than twelve The HDOP alarm allows you to be alerted when the HDOP value becomes larger than a preset value up to 12 43 GOOD SATELLITE GEOMETRY LOW HDOP lt 12 ROR RANGE ER BAD SATELLITE GEOMETRY HIGH gt 12 ALARM SETTING THE HDOP ALARM 7 Press the POS key Press the SETUP key until is displayed Press the ENTER key the display will flash the current HDOP alarm limit Use the W STEP A knob to alter the limit in the range 0 1 to 12 0 NOTE The value i
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