NorthStar Navigation EXPLORER 435 User's Manual
Contents
1. Logs see section 3 5 Fuel see section 3 3 Tank full colnet Sonar Clear used aul f Data gt DET total aat Tank size 0G Logs gt Reset engine hours Hum engines 1 Alarms gt Calibrate Units gt Trip dist 0 00 nm Flow filter Comms gt Leb Ron 8 00 nm Alarms see section 3 6 Calibrate gt Engine hours Ohrs Simulate On Units see section 3 7 Units Toodeep off Fish off Speed kn Temperature Off Depth ft Temperature rate Off Fuel USGal Low battery Off Temperature F Low fuel Off Comms see section 3 8 Comms HMEA out Calibrate see section 3 9 Calibrate HMEA data gt Speed filter Off Temperature Simulate see section 2 Temp filter 5 Fuel Keel offset 0 0 ft 10 Northstar Explorer 435 438 Installation and Operation Manual 3 1 Setup gt System Press MENU twice to display the Setup menu then select System Language English Backlight Key beep On Auto power off Off Snooze mode About Factory reset Language Select the language for the displays The options are English Italian French German Spanish Dutch Swedish Portuguese Finnish and Greek Tip In case you can t read the current language the language setting is found at the top of the system menu Backlight Backlight The backlight control is displayed The bar setting represents the current level of backlighting Key beep Enables or disables2. Ensure the back of the bottom surface of the transducer is slightly lower than the front and the front is as deep in the water as possible in order to minimise the generation of bubbles through cavitation See the Transom Transducers Installation Guide for more information The transducer may be in turbulent water Air bubbles in the water disrupt the echoes returned interfering with the fishfinder s ability to find the bottom or other targets This often happens when the boat is reversed The transducer must be mounted in a smooth flow of water in order for the ishfinder to work at all boat speeds Electrical noise from the boat s motor can interfere with the fishfinder Try some suppression spark plugs f the fishfinder beeps when turned on but nothing is displayed The fishfinder may be operating but the backlight settings may have been set too low See section 2 Basic Operation to adjust the ishfinder backlight Press O twice The wrong language is displayed See section 3 1 Setup gt System Northstar Explorer 435 438 Installation and Operation Manual 29 o o 30 Fuel used or remaining seem inaccurate If the engine is run while the fishfinder is powered off the fishfinder does not record the amount of fuel used during that engine run Consequently the Fuel remaining value will be higher than the actual amount of fuel remaining in the tank To avoid this problem use the Auto Power Wi
3. 4 Using the Explorer 435 and Explorer 438 This section explains how to interpret the sonar displays and how fish are detected and displayed t also describes Gain and Range and shows 4 1 Interpreting the display The sonar displays do not show a fixed distance ravelled by the boat rather they display a history showing what has passed below the boat during a certain period of time The history of the sonar signal displayed depends examples of some of the different sonar displays Also see section 1 2 How the Explorer 435 and Explorer 438 works the depth of the water and the scroll speed setting In shallow water the echoes have a short distance to travel between the bottom and the boat In deep water the history moves across the display 16 Northstar Explorer 435 438 Installation and Operation Manual more slowly because the echoes take longer to travel between the bottom and the boat For example when the scroll speed is set to Fast at depths over 600 ft 180 m it takes about 2 minutes for each vertical line of pixels to move across the display whereas at 20 ft 6 m it takes only about 25 seconds The scroll speed can be set by the user to display either a longer history with less fish information or a shorter history with more fish details See section 3 2 Setup gt Sonar If the boat is anchored the echoes all come from the same area of bottom This produces a flat bottom trace on the display The scr
4. display is shown in the following sections Most displays have an Options menu so that relevant features can be changed quickly Full screen display of Sonar history section 5 1 Split display with Sonar and zoomed section section 5 2 Bottom trace displayed as flat line in zoomed section section 5 3 Split display with Sonar and echo strength section 5 4 Fuel data section 5 5 Water temperature depth history and other boat data section 5 6 Use this to change the split ratio between the zoom and the sonar history sections displayed The default split ratio is 50 1 Highlight Split Ratio and press gt A left arrow and right arrow appear on either side of the divider line 2 Use the lt or gt cursor keys to adjust Hint Press lt to return to the last sonar display used Press MENU then gt to return to the previously selected display Use this to switch between two frequently used displays Refer to Section 3 2 Setup gt Sonar for information about customizing features on the sonar displays Northstar Explorer 435 438 Installation and Operation Manual 21 5 1 Sonar display To show the Sonar display highlight Sonar and This display scrolls from right most recent echoes to left oldest echoes see section 3 2 Setup gt Sonar press gt Data header set up to show the water temperature battery voltage See section 3 2 Setup gt Sonar Depth medium size digits Color bar 5 2 Sonar Zoom
5. displayed as either small medium or large fish symbols with or without depth While the SBN processing is very sophisticated itis not foolproof there will be times when the fishfinder will not be able to differentiate between large air bubbles rubbish containing air fishing floats etc and fish the remaining pmr 680 FIVE 138 VASST AGN The following picture shows the Sonar display with the Fish symbol On depth Fish symbol Off For experienced users this always provides the best information as every echo is displayed whether it is surface clutter a thermocline or a fish The picture in section 4 1 Interpreting the display shows the Sonar display with the Fish symbols Off The fish appear as arches Northstar Explorer 435 438 Installation and Operation Manual 19 Fish arches n good conditions and with Fish symbols Of f a ish passing through the cone shaped ultrasonic pulse is displayed as a fish arch A fish arch occurs when a fish enters the weak edge of the sonar cone generating a weak echo hat is displayed as the first pixel of the fish arch As the fish moves closer to the middle of the cone he distance between the transducer and the fish reduces and the echo is displayed at progressively shallower depths producing the start of an arch When the fish passes directly beneath the middle of he cone the echo becomes strongest and thickest As the fish passes out of the middle of the cone the
6. display gt Fish symbols with depth Bottom The split display shows the sonar history on the Sonar Zoomand press gt To show the Sonar Zoom display highlight Sonar history Zoom bar Zoom section Divider line E QW 5 3 Sonar Bottom display To show the Sonar Bottom display highlight right side and the zoom section on the left The zoom bar on the far right shows the area that is magnified in the zoom section See section 4 4 Range for information about adjusting the Zoom Range and Zoom Offset bottom signals This can help to identify the type Sonar Bottom and press gt This shows a split display with the sonar history on the right side and the zoom section on the left The bottom signal is shown as a flat trace in the centre of the zoom section Showing the bottom as a flat trace can make it easy to compare the echo strengths shown in the of bottom and objects close to the bottom The zoom bar can only indicate the zoom range It cannot indicate the zoom offset as this changes for each sounding displayed on the display The zoom bar is fixed in the middle of the display See section 4 4 Range for information about adjusting the Zoom Range and Zoom Offset 22 Northstar Explorer 435 438 Installation and Operation Manual 5 4 Sonar A Scope display To show the A Scope display select Sonar A Scope and press gt Use this to analyse the sonar data in detail and optimize the Gain setti
7. it is outside he range covered by the zoom bar Using the Bottom Lock and the A Scope features ogether can be a powerful aid in recognising the ype of bottom Fish symbols These appear only in the main sonar displays Fish symbols can be shown in three ways 3 3 Setup gt Fuel Explorer 438 only These features can Fuel be used only when he optional single or twin engine Set remaining 0 G uel kit has been Clear used installed Press MENU twice Tank size 0G o display the Hum engines 1 Setup menu Calibrate hen select Fuel Flow filter 5 As a fish symbol On As a fish symbol with the depth On depth The depth is shown beside the fish symbol Switched off O so that echoes are not converted to fish symbols but are displayed directly See section 4 2 Fish detection and display for more information about fish symbols Interference filter This filters the echo signal to reduce high level spiky interference such as engine noise It can be switched On or Off Data header The data header can be turned On or Off When On it is a customizable feature that can be used to display up to 6 data items such as boat speed or fuel used To customize the size of the Data header highlight Size and press gt There is a choice of Small and Large To customize the data items to be displayed Highlight Data setup and press gt The Data header increases in size to di
8. of the display The use of Auto Range is recommended for normal conditions In Manual Range the fishfinder shows only a selected depth range In areas of rapidly changing bottom depth such as the sea floor around pinnacles it can be useful to prevent the display from rescaling to always show the bottom If the bottom is deeper than the specified depth range it will not be shown on the display 5 The Displays Press MENU once to show the Display menu then select a particular display using the A or V cursor keys then press gt to confirm Section 2 Basic Operation describes how to use the keys in more detail The Display menu Display Sonar Zoom Sonar Bottom Sonar A Scope Fuel Data Split ratio 0 for setup Split Ratio See below Changing the Range Mode To change between Auto Range and Manual Range hold the or The Range mode is displayed at the bottom of the screen Press the or key to change to increase or decrease the range to the desired depth Values can be set between 10 ft 3 m to 600 ft 180 m Zoom Range and Zoom Offset On the Sonar Zoom and Sonar Bottom displays a vertical bar is shown on the far right of the display This is the zoom bar The zoom bar shows the zoom range that is the area that is magnified Use the lt or gt cursor keys to adjust the zoom range Use the A or V cursor keys to adjust the zoom offset The Display menu is summarized here and each
9. reverse happens with a progressively weaker and deeper echo There are many reasons why fish arches may not be seen For example Poor transducer installation see Transom 4 3 Gain Gain sensitivity controls the amount of detail displayed on the Explorer 435 and Explorer 438 Understanding how to set suitable Gain settings is important for optimum performance The Northstar fishfinder has two gain modes Auto Gain and Manual Gain Normally the best results are obtained in Manual Gain but practice and experience are required to obtain the optimum settings for different conditions Therefore the use of Auto Gain is strongly recommended when learning to use the fishfinder or when travelling at speed In Auto Gain the gain adjusts automatically to compensate for water depth and clarity In Manual Gain the gain can be adjusted by the user to compensate for water depth and clarity High Gain settings may amplify the normal background noise until it appears as random pixels Changing between Auto and Manual To change between Auto Gain and Manual Gain 1 From any Sonar display press 2 Use the gt cursor key to select Auto or Manual Adjusting Gain settings 1 From any Sonar display press 2 Use the A or V cursor keys to change the gain Transducers Installation Guide If the boat is anchored then fish will tend to show on the display as horizontal lines as they swim into and out of the transduc
10. the beep when a key is pressed BA to change B to accept 3 2 Setup gt Sonar ress MENU twice to display the Setup menu then select Sonar Scroll speed Fish filter Small Palette White Colour bar On Digit size Medium Bottom lock Off Fish symbols Interference filter Off Data header Auto power off Select On to have the fishfinder power off automatically every time the boat s ignition is switched off This applies only if the display unit is wired for Auto Power See section 6 4 Wiring Options Snooze Mode MSc or slows the SROREE Ca Sounding interval 20 min sounding rate time between each ultrasonic pulse to a user specified interval from 5 minutes to 2 hours The fishfinder appears to turn off however all alarms operate normally To return to normal operation press any button Ideal to be used as an anchor alarm Factory reset This option returns all of the fishfinder settings except the language to the default factory settings shown in section 3 Setting up the Explorer 435 and Explorer 438 Reset to factory defaults appears Press to gt select Yes or No Then press MENU or lt to reset and exit Scroll speed Use this to set the scroll speed on the display There isachoice of Very Fast Fast Medium Slow and Pause The depth of the water also affects the speed of the display Faster scroll speeds combined with a slow boat speed typically between 2 and 6 knots sho
11. the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an out connected e Consult the dealer or an experienced e A shielded cable must be used when connecting a peripheral to the serial ports owing measures put on a circuit different from that to which the receiver is echnician for help Contents 1 Introduction 1 1 Benefits of the Explorer 435 and Explorer 438 sssseessserrsersrrrrrrsrsrrrrrr reset 6 1 2 How the Explorer 435 and Explorer 438 work s ssssssrssserrrrsrrrrrrrererrrr rr ret 7 2 Basic Operationesssssssicsssccesssosseosscaveisecesssocscaussccncdsessssoneasondaesusscousdouessoasiaebsiesesovonsseseascanassaudseveadessishsostine 8 3 Setting up the Explorer 435 and Explorer 438 scssssssssssssssssssssssesssssssssssnsscsssssssssnssscssssssesssesesessssessees 10 3 1 Setuip gt Systems enose iai pi seb KENNEL E RENANE EEEa 11 3 2 Setup gt Sona nenia a oin E a AA r e e da Belt 11 3 3 Setup gt Fuel Explorer 4380nly mmmmeerererrrrrrrrrrrrrr rr rr rr rr rr rr rr rr r rr rr rr rr rna 12 3 4 Setup gt DALO ss vada rn arken bokar P ONARE FRE ANN DENEA BRA ANSE RES 13 3 5 SEtUp gt LOGS sii ciccieissastidiganiosateeday sts tearasdeddavareerseaeseanaeacnned 14 3 6 Setup gt Alar Msie cn gacuder ake a Re HUME ed VAA enahatiges a a RASA re 14 327 SEtUP gt UNIS annae nE e E Selar Hob R e BBK RAR i scabeecadaueaa sane 15 3 8 Setup g
12. 435 438 Installation and Operation Manual c e 9 e fishfinder operates erratically DEn heck that the transducer does not have ebris e g weed plastic bag caught round it e transducer may have been damaged uring launching running aground or while nderway with debris etc If the transducer as been impacted it may have been kicked up on the bracket If it is not physically damaged reset the transducer back to its original position See the Transom Transducer Installation Guide When the transducer is less that 2 ft 0 6 m from the bottom the depth readings may become inconsistent and erratic ai A a ien e Manual Gain may be set too low which may cause weak bottom echo or no fish signals If in Manual Gain try increasing the Gain Ensure the back of the bottom surface of the transducer is slightly lower than the front and the front is as deep in the water as possible in order to minimize the generation of bubbles through cavitation See the Transom Transducers Installation Guide Check the transducer and power cable connectors at the back of the display unit are securely plugged in and the collars are ocked in place The collars must be secure for watertight connection nspect the power cable from end to end for damage such as cuts breaks squashed or trapped sections Ensure there is not another fishfinder or depth sounder turned on which may interfere with this fishfinder El
13. Explorer 438 ww me Explorer 435 6 4 Haj a e OS Explorer 435 438 Fishfinder Installation and Operation Manual NORTHSTARSC www northstarnav com IMPORTANT SAFETY INFORMATION Please read carefully before installation and use Ea This is the safety alert symbol It is used to alert you to potential personal injury hazards Obey all safety messages that follow this symbol to avoidpossible injury or death WARNING indicates a potentially hazardous situation which if WARN ING not avoided could result in death or serious injury CAUTION CAUTION DISCLAIMER It is the owner s sole responsibility to install and use tl he instrument and transducers in a manner that will not cause accidents personal injury or pro The user of this product is solely observing safe boating practices perty damage responsible for BRUNSWICK NEW TECHNOLOGIES INC AND ITS SUBSIDIARIES AND AFFILIATES D LIABILITY FOR ANY USE OF THIS WAY THAT MAY CAUSE ACCIDE SCLAIM ALL RODUCT INA TS DAMMAGE OR THAT MAY VIOLATE THE LAW Governing Language This statement any instruction manuals user guides and other information relating to the product Documentation may be translated to or CAUTION indicates a potentially hazardous situation which if not avoided could result in minor or moderate injury CAUTION used without the safety alert symbol indicates a potentially hazardous situat
14. ack wire and does not need to be grounded Denotes Explorer 438 only CAUTION 1 Amp fuses must be positioned where shown in the wiring diagrams Basic wiring This requires the Explorer 435 and Explorer 438 to be powered on manually with the key Black wire Connect this to the negative battery terminal 3 Screw the four studs into the brass inserts in the back of the display unit 4 Sit the display unit in place and fit the washers and nuts to the studs Bracket Mounting 1 Fixthe mounting bracket onto the boat using the three stainless steel screws Do not overtighten the screws as the bracket may not rotate 2 Push the display unit onto the mounting bracket and tighten it firmly using the knob on the mounting bracket 3 Attach the cables Removing the display unit The display unit can be removed after each use for protection against the environment or security reasons When removing the display unit ensure that the plugs left in the boat are not exposed to the elements Push the attached dust covers over the exposed ends of the plugs Keep the display unit in a dry clean place such as the optional Northstar carry bag Six wiring options are described in this section Basic wiring This does not start the fishfinder automatically when the boat ignition is switched on and it disables the engine hours counter Auto power wiring This must be used for the engine hours and fuel computer o
15. acklighting Supply voltage 10 to 16 V DC Supply current at 13 8 V 300 mA min no backlighting 400 mA max full backlighting Output power Variable up to 200 W RMS Operating temperature 32 to 122 F 0 to 50 C Transom transducer cable length Explorer 435 33 ft 10 m Explorer 438 26 ft 8 m Typical depth acquisition time from startup 2 seconds at 100 ft 30 m Receiver sensitivity Better than 10 micro volts RMS Dynamic range 4 0 million to 1 120 dB Temperature measurement range 32 to 99 9 F 0 to 37 7 C Resolution of 0 1 unit Transducer frequency 200 kHz Speed range 1 to 50 kn 57 5 mph 96 6 kph Standards Compliance EMC USA FCC Part 15 Class B Europe CE EN50081 1 and EN50082 1 New Zealand and Australia C Tick AS NZS 3548 Environment IPx6 IPx7 NMEA Output Explorer 438 only NMEA 0183 Ver 2 0 4800 baud is a standard for interfacing marine electronic devices The Northstar fishfinder can output the following sentences DBT Depth Below Transducer DPT Depth and Keel offset MTW Water temperature XDR Battery voltage and fuel flow VHW Speed Fuel Computer Explorer 438 only optional fuel transducer s required Outboard carburetted two stroke and EFI petrol gasoline engines 30 to 300 hp Outboard four stroke petrol gasoline engines 90 to 300 hp Inboard petrol gasoline engines 50 to 300 hp Minimum flow rate 1 3 U S gallons per hour 5 litr
16. allation shows only one flow rate Check that the number of engines is set to 2 See section 3 3 Setup gt Fuel Erratic Fuel Flow readings The fuel flow transducer may have been mounted too close to the fuel pump or may be subject to excessive vibration Refer to the installation instructions supplied with the fuel ransducer Check for leaks in the fuel line or in the fuel pickup in the tank The Flow filter value is not suitable for the engine Check that the value is not set to Zero hen try increasing the value until a steady flow rate is shown See section 3 3 Setup gt Fuel There is no reading for fuel economy The boat must be travelling through the water to generate an Economy reading Check that the paddlewheel on the transducer is spinning freely and that the two magnets in he paddlewheel are still in place There is a double bottom trace displayed The boat may be in an area that generates shadows See section 4 1 Interpreting the display n shallow water the echoes may bounce Reduce the gain setting see section 4 3 Gain Decrease the Range Northstar Explorer 435 438 Installation and Operation Manual AMERICAS 30 Sudbury Road Acton MA 01720 USA Ph 1 978 897 6600 Ph 1 800 628 4487 Fax 1 978 897 7241 sales bntmarine com EUROPE Unit 2 Ocean Quay Belvidere Rd Southampton SO14 5QY ENGLAND Ph 44 2380 339922 Fax 44 2380 330345 northstaruk northstarna
17. allons 15 litres of fuel has been used per engine 4 Check the actual amount of fuel used per engine by refilling the portable tank s to the original level and noting the reading s from the fuel dispenser s gauge 5 Select Fuel Use A or V to change the reading to match that on the fuel dispenser s gauge 6 Press gt when the reading is correct Note If the fuel calibration options appear to give erroneous readings after a while first check that the fuel sensor has been installed correctly according to the installation instructions supplied with it then see Appendix B Troubleshooting Keel Offset Keel offset is a depth correction representing the vertical distance between the depth transducer and the location from which the depth is to be measured Enter a positive keel offset value when the transducer is located below the water surface but the total depth is required Enter a negative keel offset value when the depth below the deepest part of the boat is required such as the keel the rudder or the propeller and the transducer is located closer to the water surface Use the cursor keys to select Keel offset then press gt to display the Keel offset box Use the A or V cursor keys to adjust the value i Pa O A Water surface x Positive Depth of transducer value Negative Transducer allie Note Boat illustrated uses a through hull transducer
18. ar dealer for information on Northstar s full range of NMEA enabled instruments and connection options 26 Northstar Explorer 435 438 Installation and Operation Manual Explorer R310 Repeater for depth speed water temperature and battery voltage Accepts NavBus or NMEA data inputs from other instruments Explorer D210 Depth Repeater Explorer 550 Color GPS Chartplotter with worldwide l rs coverage 6 6 Cleaning and maintenance Clean the screen only with a damp cloth and mild detergent when dirty or covered in sea salt Avoid abrasive cleaners petrol or other solvents Cover or remove a transom mounted transducer when repainting the hull If painting over a through hull transducer with antifouling paint use only one coat of paint Remove the previous coat of antifouling paint by sanding it lightly To optimize performance avoid walking on or jamming cables Appendix A Specifications and connectors Keep the transducer free of weed paint and debris Do not use a high pressure water blast on a speed sensor paddlewheel as it may damage the bearings When not in use the Explorer 435 or Explorer 438 can be removed from the installation bracket and stored in the Northstar carry bag or left on the installation bracket and securely covered with the sun cover Depth range 2 ft 0 6 m to 600 ft 180 m Display type TFT Color Screen resolution 320 high x 240 wide pixels LED multi level b
19. are turned off Used shows total fuel used since this was last reset with the Clear Used command Remaining shows the amount of fuel remaining in the tank s Flow shows the fuel consumption per hour For twin engine installations the fuel flow for each engine is shown separately This is useful or checking that both engines are under the same load Economy is the distance travelled per unit of fuel used The fishfinder calculates this from the boat speed and fuel used The bigger this number the better the fuel economy Adjust the throttle and trim to achieve the best fuel economy Note that the Explorer 438 uses a paddlewheel transducer to measure speed used to calculate the fuel economy Therefore calibration of the boat speed measurement is essential for an accurate fuel economy reading See section 3 8 Setup gt Calibrate Northstar Explorer 435 438 Installation and Operation Manual 23 5 6 Datadisplay To show the Data display select Data and press gt The data display shows a graph of the water temperature and depth over time and other Depth ft selected data items The graph is useful for locating warm and cold spots in the water Refer to section 3 4 Setup gt Data to change the displayed data items Water temp F Voltage Y p and temperature graph time base To change units refer to section 3 7 68 0 13 8 Setup gt Units Depth ft Water temp H time base Select from 5 minutes to 2 h
20. arts as soon as the engine starts For twin engine installation a T connector needs to be installed on the fuel transducer cable Through hull transducers Auto power option Black wire Connect this to the negative battery terminal Red wire Connect this to the positive battery terminal after the main switch Fit a 1 Amp fuse as shown Yellow wire To enable the engine hours counter and fuel counter and to start the fishfinder automatically when the ignition is turned on connect the yellow wire to the ignition system through a 1 Amp fuse Note The fishfinder cannot be turned off while the ignition is on Auto power option To ignition system Fuse White Ignition switch Fuse al External Beeper Main or Light s ten 12VDC Red Through hull transducers are supplied wth Y adapter cable for connection of both transducers into top socket with blue nut 8 pin phono Speed Temperature through hull transducer Through hull depth transducer 6 5 Systems of several instruments Several Northstar instruments can be connected together to share data NMEA NMEA is an industry standard for marine instrument connections Data sent by one instrument over an NMEA line can be read and displayed by another instrument that accepts NMEA 0183 Version 2 It requires dedicated connections between instruments Please contact your Northst
21. as wide bands Bottom types Mud weed and sandy bottoms tend to weaken and scatter the sonar pulse resulting in a weak echo Hard rocky or coral bottoms reflect the pulse resulting in a strong echo See section 5 3 Sonar Bottom display Depth 200 kHz 5 15 2 B WAS 150 lt 40 200 54 250 es Northstar Explorer 435 438 Installation and Operation Manual 17 Shadows Shadows are created around areas where the ultrasonic beam cannot see These areas include hollows on the bottom or beside rocks and ledges where the strong echoes returned off the rocks obscure the weak echoes of the fish and may also create a double bottom trace See following for an example of the sonar display in such an environment A double bottom trace is shown on the display Example of shadows K Sonar display of same area fish is hidden by the strong echoes offthe o bottom and is not shown on the display fish is visible on the display Northstar fishfinders display the most recent events on the right of the screen Moving boat 1 minute ago 30 seconds ago Now When the fish symbol option is on any echo returned that fits the profile of a fish is displayed on the screen with a fish symbol 18 Northstar Explorer 435 438 Installation and Operation Manual Stationary boat 1 minute ago Now When a boat is stationary all bottom echoes will come from the same small area of bot
22. atically re enable when the value moves outside the alarm trigger setting The Temperature alarm automatically re enables when the temperature is more than 0 45 F 0 25 C above or below the alarm trigger setting The Temperature rate alarm automatically re enables when the rate of temperature change falls below the trigger setting by more than 0 2 F 0 1 C per minute Flashing Light and or External Beeper Explorer 438 only If a secondary alarm indicator is required a flashing light and or external beeper can be installed These can be positioned anywhere suitable on the boat See section 6 4 Wiring options 14 Northstar Explorer 435 438 Installation and Operation Manual 3 7 Setup gt Units Press MENU twice to display the Setup menu then select Units The default units are shown in this example Speed kn Di Depth ft istance Fuel USGal Select from nm nautical miles Temperature F mi miles Speed km kilometres Select from kn knots mph miles per hour kph kilometres per hour 3 8 Setup gt Comms Explorer 438 only Use this feature when the Explorer 438 is connected to other Northstar instruments or any NMEA compatible instrument Press MENU twice to display the Setup menu then select Comms MATEN off HMEA data gt 3 9 Setup gt Calibrate Press MENU twice to display the Setup menu then select Calibrate Speed filter Off The fuel options can be cal
23. der can be used to find fish to locate features on the bottom such as reefs or wrecks and to help recognize favourite fishing spots from the bottom profile The Northstar fishfinder can also assist with navigation by providing depth information to This manual also explains how to operate the Explorer 435 and Explorer 438 effectively and gives troubleshooting and performance tips Important It is vital to the performance of the fishfinder that the transducer is installed in the best location Please follow the installation instructions very carefully CAUTION IMPORTANT NOTE ON USE While any fishfinder can be used as an aid to navigation accuracy can be limited by many factors including the location of the transducer It is the user s responsibility to ensure the Northstar fishfinder is installed and used correctly help identify the depth contours marked on charts With the optional fuel kit the Explorer 438 also becomes a sophisticated and easy to use uel computer All of the Northstar 400 Series fishfinders use proprietary SBN Technology for sonar processing o improve Signal enhancement Bottom recognition and Noise rejection SBN Technology uses digital adaptive filter algorithms to enhance all returned signals At the same time SBN Technology uses active noise control to reject interference which can often be mistaken by fishfinders for true return an Using SBN Technology the f
24. displayed on the screen Refer to section 4 3 for more information 1 1 Press O briefly to show the gain controls Press A or V to adjust gain BA to change d to save Backlight Press gt to switch between auto and manual gain Press lt or MENU to confirm and exit Display Adjustment The display and keys are backlit with a choice of 16 bright ness levels To change the backlight level Press O twice to show the backlight control Press V to dim or A to brighten Press gt to confirm Northstar Explorer 435 438 Installation and Operation Manual Backlight BA to change B to accept 3 Setting up the Explorer 435 and Explorer 438 Press MENU twice to show the Setup menu then select a particular option using the A or V cursor keys Section 2 Basic Operation describes how to use the keys in more detail The Setup menu and options are summarized below The factory default settings are shown where applicable Each Setup menu option is explained in the following sections The Setup menu and options System see section 3 1 Sonar see section 3 2 System Sonar Language English Scroll speed Backlight Fish filter Small Key beep On Palette White Auto power off Off Colour bar On Snooze mode gt Digit size Medium About Bottom lock Off Factory reset Fish symbols Interference filter Off Data see section 3 4 Data header gt Time base 20 min Data setup
25. ectrical noise from the boat s engine or an accessory may be interfering with the transducer s and or the Northstar fishfinder This may cause the fishfinder to automatically decrease the Gain unless using Manual Gain The fishfinder thus eliminates weaker signals such as fish or even the bottom from the display This may be checked by switching off other instruments accessories e g bilge pump and the motor until the offending device is located To stop problems from electrical noise try re routing the power and transducer cable s away from the boat s other electrical wiring routing the display unit s power cable directly to the battery with an in line fuse a Bottom is not displayed The fishfinder may have Manual Range selected and the depth may be outside the range value selected Either change the fishfinder to Auto Range or select another depth range see section 4 4 Range The depth may be outside the fishfinder s range While in Auto Range the display unit will display to indicate that there is no bottom detected A display of the bottom should reappear when in shallower water The bottom is displayed too far up the screen The fishfinder may have Manual Range selected and the selected Range value is too high for the depth Either change the fishfinder to Auto Range or select another depth range see section 4 4 Range Bottom echo disappears or erratic digital reading while the boat is moving
26. een shot shows a typical sonar display with the Fish symbols turned Off 4 Single fish Large school of fish Small school of fish Bottom Strength of echoes The colors indicate differences in the strength of the echo The strength varies with several factors such as the Frequency and cone width The pulse generated by the Explorer 435 and Explorer 438 transducer travels down through the water spreading outwards to form a rough cone shape Inside the cone the return signals are the strongest The cone width is dependent upon the transducer design and the frequency of the pulse with Northstar s transom mount supplied it is about 15 The chart shows how the cone width varies over depth for each frequency used Figures are approximate Size of the fish school of fish or other object Depth of the fish or object Location of the fish or object The area covered by the ultrasonic pulse is a rough cone shape and the echoes are strongest in the middle Clarity of water Particles or air in the water reduce the strength of the echo Composition or density of the object or bottom Note Planing hulls at speed produce air bubbles and turbulent water that bombard the transducer The resulting ultrasonic noise may be picked up by the transducer and obscure the real echoes Kelp Weed Soft bottoms such as mud weed and sand show as narrow bands Hard bottoms such as rock or coral show
27. er sonar beam Slow speeds in deeper water give the best fish arch returns Range is important It will be much easier to see fish arches when using zoom mode to concentrate on a particular section of water rather than just displaying everything from he surface to the bottom Zooming increases screen resolution up to 100 times t is difficult to get fish arches in shallow water as the transducer sonar beam is very narrow near the surface and fish do not stay within he beam long enough to display an arch Several fish in shallow water tend to display as randomly stacked blocks of pixels Wave motion may result in distorted fish arches Note The Gain mode automatically changes to Manual Gain if the gain H Manual setting is adjusted by the user Obtaining the best results EIEN to change To obtain the best to save detection capability for jo Backlight both fish and bottom we recommend the user adjusts the gain in the A Scope display until the threshold line is just to the right of the unwanted noise Gain Threshold line Unwanted signal Gain line 20 Northstar Explorer 435 438 Installation and Operation Manual 4 4 Range Range is the vertical depth displayed on the Explorer 435 and Explorer 438 The Northstar fishfinder has two range modes Auto Range and Manual Range In Auto Range the fishfinder adjusts the depth range automatically so the bottom is always shown in the lower part
28. es per hour Maximum flow rate 34 U S gallons per hour 130 litres per hour Northstar Explorer 435 438 Installation and Operation Manual 27 5 0 126 0 mm 5 0 126 0 mm 5 7 143 5 mm Explorer 435 and 438 Appendix B Troubleshooting 1 1 27 9 mm This troubleshooting guide is written with the c assumption that the user has read and understood he relevant sections in this manual t is possible in many cases to solve difficulties without having to send the display unit back to he manufacturer for repair Please follow this roubleshooting section before contacting the z nearest Northstar dealer There are no user serviceable parts Specialized d methods and testing equipment are required o ensure that the display unit is reassembled correctly and is waterproof Users who service the product themselves will void the warranty Repairs to the product may only be carried out by a service centre approved by Northstar If the product must be sent into a service centre for repair it is essential to send in the transducer s at the same time More information can be found on our Website f www Northstarnav com 1 The fishfinder won t turn on 9 a The Explorer 435 and Explorer 438 are designed to operate on a 12 volt battery system where the voltage may vary from 10 to 16 5 volts If an excessive voltage is supplied a resettable fuse will be tripped 2 tu
29. hrenheit US gallons and knots See section 3 7 Setup gt Units to change the units Northstar Explorer 435 438 Installation and Operation Manual 5 1 Introduction Congratulations on choosing a Northstar fishfinder For maximum benefit please read this manual carefully before installation and use This manual describes how to install and set up the Explorer 435 or Explorer 438 Refer to seperate Transducer Installation Instructions supplied with the transducer 1 1 Benefits of the Explorer 435 and Explorer 438 The Explorer 435 and Explorer 438 are high quality fishfinders that are supplied with a transducer Both use TFT Thin Film Transistor technology to provide a color display for easy daylight viewing The LED backlight can be dimmed for night fishing The bracket mounting option also allows the fishfinder to be tilted and swivelled for optimum viewing The colors on the sonar displays are cus tomizable with a choice of four 16 color palettes and one 8 color palette The colors represent different signal strengths making the sonar displays easy to interpret This capability combined with a variable power output of up to 200 W RMS ensures that the Explorer 435 and Explorer 438 operate effectively in shallow and deep water The Explorer 435 and Explorer 438 can detect the bottom to a depth of 600 feet 180 metres depending on the clarity of the water and the type of transducer used The Northstar fishfin
30. ibrated only when the optional single or twin engine Temperature kit is installed on Temp filter 5 petrol gasoline Fuel engines Keel offset 0 0 ft Speed Calibration may be required because different hull shapes have different flow characteristics Obtain an accurate measurement of the boat s speed from a GPS receiver or by following Depth Select from t feet m metres a fathoms Fuel Select from Litres USGal US gallons mpGal Imperial Gallons Temperature Select either F Fahrenheit C Celsius NMEA NMEA is generally used with third party instruments Select On to transmit NMEA sentences see Appendix A Specifications Otherwise select Off NMEA data Use this to specify which NMEA sentences will be transmitted see Appendix A Specifications and section 5 6 Data display for information about how to display NMEA data another boat travelling at a known speed or by making a timed run over a known distance Note for accurate calibration The speed from a GPS receiver should be greater than 5 knots The speed from another paddlewheel transducer should be between 5 and 20 knots Best results are achieved in calm conditions where there is minimal current best at high or low tide Use the cursor keys to display the speed readout box then increase or decrease the readout to match the independent speed value Northstar Explorer 435 438 Installation and O
31. ion This would generally be in a shaded area Flush mounting requires a solid panel with access behind for wiring and mounting screws After flush mounting the Explorer 435 24 Northstar Explorer 435 438 Installation and Operation Manual Bracket mounting requires a panel for mounting the bracket Ensure that the panel is not likely to deform and is not subject to excessive vibration The bracket can be tilted and rotated so the Explorer 435 and Explorer 438 can be removed after each use Select a position where the display unit will be At least 4 100 mm away from the compass At least 12 300 mm away from any radio transmitter At least 4 ft 1 2 m away from any antenna Easy to read by the helmsman and crew while underway Protected from physical damage during rough sea passages Easy to access the 12 V DC power source Convenient to route the transducer cables Flush Mounting 1 Cut a hole in the bulkhead for the display unit using the flush mount template 2 Drill four holes for the mounting studs using the flush mount template 6 4 Wiring Options The power data cable contains 5 wires Wire Function Black Ground power negative White NMEA out Red Positive power in 12 VDC Yellow Auto power in connect to red wire Positive power in to enable Auto power Green External beeper or light out switched to ground 30 V DC 200 mA maximum Note The cable shield is connected to Pin 1 bl
32. ion which if not avoided may result in property damage has been translated from another language Translation In the event of any conflict between any Translation of the Documentation the English language version of the Documentation will be the official version of the Documentation This manual represents the Explorer 435 and Explorer 438 as at the time of printing Brunswick New Technologies Inc and its subsidiaries and affiliates reserve the right to make changes to specifications without notice Copyright 2006 Brunswick New Technologies Inc Northstar is a registered trademark of Brunswick New Technologies Inc FCC Statement Note This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a normal installation This equipment generates uses and can radiate radio used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in ipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the fol frequency energy and if not installed and a particular installation If this equ e _Reorient or relocate
33. ishfinder analyses the reflections from each pulse filters false returns and displays what is in the water under the boat See section 4 1 Interpreting the display for more information 6 Northstar Explorer 435 438 Installation and Operation Manual 1 2 How the Explorer 435 and Explorer 438 work The Explorer 435 and Explorer 438 have two parts the transducer attached to the hull the display unit The transducer generates an ultrasonic pulse sound that is above the hearing range of he human ear which travels down towards he bottom at a speed of about 4800 ft sec 1500 m sec spreading out into a cone shape When the pulse meets an object such as a fish or he bottom it is partly reflected back up towards he boat as an echo The depth of the object or bottom is calculated by the Explorer 435 and Explorer 438 by measuring the time taken between sending a pulse and receiving the echo When an echo has been returned the next pulse is sent The Explorer 435 and Explorer 438 convert each echo into an electronic signal displayed as a vertical line of pixels The most recent echo appears on the extreme right of the display with the older echoes being scrolled towards the left eventually disappearing off the display The scroll speed depends upon the water depth and scroll speed setting See section 3 2 Setup gt Sonar and section 4 1 Interpreting the display for more information The appearance of echoes dis
34. late how much fuel is now in the tank 4 SelectSet remaining and update the reading It is essential to do this whenever some fuel is added or removed Otherwise the reading on the Fuel display see section 5 5 Fuel Display and the Low Fuel Alarm see section 3 6 Setup gt Alarms are meaningless 3 4 Setup gt Data Press MENU twice to display the Setup menu then select Data Data Data setup Data setup To change data items Explorer 438 only 1 Select Data setup and press gt 2 Use Aor V to move from data field to data field Clear Used SelectClear used toset Used the amount of fuel used to zero Do this to start measuring the amount of fuel used over a certain time or distance When asked Are you sure select Yes Tank size Enter the capacity of the fuel tank Num engines Set the number of engines to 0 1 or 2 If 0 is selected the fuel features are turned off Calibrate See section 3 9 Setup gt Calibrate Flow filter Most engines do not draw fuel from the tank at a steady rate To give a stable fuel flow reading the ishfinder calculates the flow value s by taking several measurements and averaging them Use he Flow filter to set the period over which the uel flow is averaged For twin engine installations the fuel flow for each engine must be adjusted separately The Flow filter can be set from 0 to 10 seconds Use the lowest value which gives a stable flow Usually a val
35. ngs Divider line between sonar history and A Scope Gain setting strongest echo for display Gain threshold weakest echo for display 5 5 Fuel display Explorer 438 only The user can define the level of the weakest and strongest echoes to be shown on the sonar displays by using the Gain setting See section 4 3 Gain for more information The strength of an echo at a particular depth is shown by the length of the horizontal line at hat depth A strong echo produces a long line whereas a weak echo produces a short line Fish recognition The echo strengths shown on the A Scope can be useful in recognising the type of fish Different species of fish have different sizes and shapes of swim bladders The air in the swim bladder reflects the ultrasonic pulse so the strength of the echo varies between fish species according to the size and shape of the swim bladder When fishing among a school of fish and catching them note the fish species and the strength of the echo that it returns on the A Scope Then when that particular echo is seen at future times on the fishfinder it is likely to be he same fish species Tank full Set remaining 0G Clear used Tank size 0G Hum engines 1 Calibrate Flow filter To show the Fuel display select FueLand press gt See section 3 3 Setup gt Fuel for information about setting up the fuel values If the number of engines is set to 0 the fuel features
36. ours 6 Installation and Maintenance Correct installation is critical to the performance of the Explorer 435 and Explorer 438 There are two components to install the display unit and the transducer It is vital to read the entire installation section of this manual before attempting to install the components 6 1 What comes with this product Standard configuration Explorer 435 or Explorer 438 display uni Power cable Mounting bracket screws included Warranty registration card This manual Sun cover for display unit Flush mounting kit Transom transducer includes cable kit and screws Transom transducer Power cable Transom Mount Transducer Installation Manual denotes Explorer 438 only Mounting bracket Screws amp Display unit 6 2 Options and Accessories Explorer 500 series chartplotters Through hull depth transducer Through hull speed temperature transducer Fuel flow kit single or twin engine Replacement paddle wheel Carry bag Explorer R310 see section 6 5 Systems of several instruments Please consult your Northstar dealer for more information Explorer 550 denotes Explorer 438 only chartplotter Fuel flow kit 6 3 Mounting and removing the display unit There are two mounting arrangements and Explorer 438 cannot be tilted or moved after installation to reduce any unwanted glare or reflections Carefully select the best viewing position before installat
37. peration Manual 15 Temperature The factory settings should be sufficiently accurate or normal usage To calibrate the temperature readout first measure the water temperature with a hermometer known to be accurate Use the cursor keys to display the temperature readout box then increase or decrease the value to match the measured temperature The emperature can be set from 32 to 99 9 F 0 to 377 C with a resolution of 0 1 unit To change the units between F Fahrenheit or C Celsius see section 3 7 Setup gt Units Fuel Calibrating the fuel usage can improve the accuracy of fuel measurements Twin engine installations require each fuel transducer to be calibrated This can be done at the same time with two portable tanks or at different times using one portable tank Calibrating the fuel transducer s requires accurate measurement of the fuel consumption This is best done using a small portable tank At least 4 gallons 15 litres of fuel should be used to ensure an accurate calibration It is often very difficult to fill underfloor tanks to the same level twice due to air pockets so the more fuel used the more accurate the calibration To calibrate the fuel transducer s perform the following steps 1 Record the level of the fuel in the tank s 2 Connect the portable tank s to the engine through the fuel transducer s 3 Run the engine at normal cruising speed until at least 4 g
38. played are affected by the fishfinder settings range and gain settings echoes different fish types different bottom types wrecks and seaweed noise water clarity and bubbles See section 4 1 Interpreting the display for more information Northstar Explorer 435 438 Installation and Operation Manual r 2 Basic Operation Key Names lt Returns to the previous menu zooms in AM Cursor keys move the selection highlight and change settings scrolls up or down gt Confirms changes zooms out MENU Press to show the Display menu Press again to show the Setup menu Increases the Range Hold for Auto Range Decreases the Range Press and hold to power On and Off pressing once shows the Gain controls Press twice to show Backlight control Key Operation The fishfinder is operated through menus To select a menu item 1 Press A or V to move the highlight to the item 2 Press gt to select the item To change a setting 1 Use the cursor keys A or v to make the change s 2 Press gt to confirm lt to cancel Power On Auto Power Press OD to turn the fishfinder on If the fishfinder is wired for auto power it turns on automatically whenever the boat s ignition is turned on This ensures that the engine hours counter and optional fuel functions are activated A title display appears briefly This is followed automatically by the Installation menu only the first time the fishfinde
39. ptions Secondary Alarm wiring NMEA wiring Single engine fuel wiring Twin engine fuel wiring Note f a wire color is not specifically mentioned it is not used in that wiring option Section 6 5 Systems of several instruments describes NMEA and NavBus Red wire Connect this to the positive battery terminal after the main switch Fit a 1 Amp fuse as shown Yellow wire Connect this to the black wire This disables the engine hours counter Power on the fishfinder manually whenever the main switch is on Northstar Explorer 435 438 Installation and Operation Manual 25 Basic wiring Fuse I a Main switch 12VDC NMEA wiring Option Explorer 438 only White Wire Use this if desired to connect the fishfinder to other NMEA instruments such as Northstar s Explorer R310 See section 6 5 Systems of several instruments Secondary alarm wiring option Explorer 438 only Green Wire Use this to connect a secondary alarm indicator such as a flashing light or external beeper with a built in drive circuit See the Auto power wiring diagram If the external beeper or light requires more than 200 mA total fit a relay Consult your Northstar dealer for more advice Fuel kit wiring Explorer 438 only See the Fuel Kit Installation Guide for information about the fuel transducer cable Wire the power cable for Auto power as described in this section to make sure the fuel counter st
40. r is switched on Use this menu to specify the language see section 3 1 Setup gt System and units see section 3 7 Setup gt Units At all other times the title display is followed by the display that was used most recently If the transducer is not connected the message No transducer detected Enter simulate mode will appear Press A or v to select and press gt to accept If the transducer was not intentionally disconnected turn off the fishfinder and refer to the section on Troubleshooting in Appendix B 8 Northstar Explorer 435 438 Installation and Operation Manual Power Off To turn the fishfinder off hold A countdown box appears Continue to hold for 3 seconds until the fishfinder turns off Note If the unit is wired for Auto Power section 6 4 Wiring options the fishfinder can be turned off only when the boat s ignition is turned off Simulate Mode An internal simulator allows users to learn how to operate System gt the fishfinder off the water Sonar gt In Simulate mode the word Fuel gt Simulate flashes at the Data gt bottom of the display The lone gt fishfinder generates data g so that all the main displays bear appear to be operational Units Comms Calibrate gt Use Setup gt Simulate as follows 1 Press MENU twice to show the Setup menu 2 Highlight Simulate 3 Press gt to select On or Off Gain Adjustment Gain sensitivity controls the amount of detail
41. r transducer Sonar Performance The accuracy of the sonar depth display can be affected by many factors including the type and location of the transducer and water conditions Ensure that the transducer is located and used correctly Fuel Computer Do not rely on the fuel computer as the sole source of information regarding available fuel onboard Fuel economy can change drastically depending on boat loading and sea conditions Fuel Computer information should be supplemented by visual or other checks of the fuel load This is necessary due to possible operator errors such as forgetting to reset the fuel used when filling the tank running the engine with the Fuel Computer not switched on or on other operator actions that may render the device inaccurate Always carry adequate fuel onboard for the intended trip plus a reserve to allow for unforeseen circumstances Failure to adhere to these warnings may lead to death serious injury or property damage Northstar disclaims all liability for installation or use of this product that causes or contributes to death injury or property damage or that violates any law As Northstar is continuously improving this product we retain the right to make changes to the product at any time which may not be reflected in this version of manual Please contact your nearest Northstar office if you require any further assistance The Explorer 435 and Explorer 438 are set up with default units of feet F Fa
42. ring option described in section 6 4 Wiring options This ensures that the fishfinder powers on automatically whenever the boat s ignition is switched on In rough seas fuel may surge back and forth through the fuel transducer resulting in incorrect readings Try installing a one way valve between the fuel transducer and the fuel tank The Set remaining fuel value must be reset after every refuelling see section 3 3 Setup gt Fuel The fuel tank may not refill to the same capacity each time due to air pockets This is particularly noticable with underfloor tanks Fuel transducers wear out over time and should be replaced after every 5000 litres of fuel Flow indicates no fuel or low fuel Check that the number of engines is set to 1 See section 3 3 Setup gt Fuel Check that the fuel cable connectors are securely plugged in and the collar is locked in place The collar must be locked in place to give a watertight connection A fuel transducer may be clogged If so remove the transducer from the fuel line and gently blow through it in the opposite direction to the fuel flow A fuel filter between the fuel transducer and the fuel tank must be installed as per the fuel installation guide Failure to do so will void the warranty 12 a Inspect the fuel cable from end to end for damage such as cuts breaks trapped or squashed sections Check that the fuel filter is clean Atwin engine inst
43. rning the display unit off b Check that the power cable connector at the back of the display unit is securely plugged in and the collar is locked in place The collar must be secure for watertight connection Measure the battery voltage while the battery is under load turn on some lights radio or other electrical equipment connected to the battery If the voltage is less than 10 volts he battery terminals or wiring on the erminals may be corroded he battery may not be charging correctly or may need replacing nspect the power cable from end to end for damage such as cuts breaks squashed or rapped sections Ensure that the red wire is connected to the positive battery terminal and the black wire to he negative battery terminal If wired for the Auto Power option ensure the yellow wire is connected to the ignition circuit Also check he boat s main switch circuit see section 6 5 Wiring options Check for corrosion on the power cable connector and clean or replace if required Check fuses that are placed in line with the power cable A fuse can be blown despite appearing to be good or the fuse may be corroded Test the fuse or replace it with a fuse known to be good The fishfinder won t turn off The fishfinder may have been wired for Auto power In this case the fishfinder cannot be turned off while the ignition power is on See Auto power wiring in section 6 4 Wiring options 28 Northstar Explorer
44. splay all 6 data ields Some data fields may be blank 2 Use Aor V to move from data field to data field 3 Press gt at any data field to show the list of data items that can be displayed there 4 Highlight the required data item and press gt The data item is immediately displayed in that data field 5 Press lt or MENU when finished and the Data header resizes automatically MAN WINNING Northstar fuel kits are only suitable for petrol gasoline engines Fuel consumption can change drastically depending upon the boat loading and the sea conditions Always carry adequate fuel for the journey plus a reserve 12 Northstar Explorer 435 438 Installation and Operation Manual It is recommended that the fuel tank capacity is measured by draining the fuel tank then filling it to capacity After filling note the reading from the fuel dispenser s gauge Note Beware of air pockets especially in underfloor tanks Tank full Select Tank full each time the fuel tank s are completely refilled When asked Are you sure select Yes Otherwise the reading on the Fuel display see section 5 5 Fuel Display and the Low Fuel Alarm see section 3 6 Setup gt Alarms are meaningless Set remaining Before doing a partial refill of the tank or removing fuel manually from the tank for example by siphoning it off 1 Note the Remaining reading on the Fuel display Note how much fuel is added or removed Calcu
45. sserrrrsrrrererrrrrrrrrrrrrrrrrrrrrr rr rr rer rr srt 24 6 3 Mounting and removing the display UNIt ssrerrrrrrrrrrrrrrrrrrrrr nnen 24 674 WiriNGOptions 2 es6 a rann neu Mel nwa v us ene SN EKEN EA 25 6 5 Systems of several instruments cece cece cece eee ence eect eeee seat rr rerna 26 6 6 Cleaning and maintenance ccc cece ence eee e ence eee cnet enaeenaeeenes 27 4 Northstar Explorer 435 438 Installation and Operation Manual Appendix A Specifications 27 Appendix B Troubleshooting cssssssssssssssssssssssssssssesssssssessssssesssessessnssscssessessssssssssssessssssessnsssesssssessses 28 Important It is your sole responsibility to install and use Northstar s instrument amp transducers in a manner that will not cause accidents personal injury or property damage Always observe safe boating practices The choice location angle and installation of the instrument amp transducers are critical to performance of the system as intended Follow instructions in this manual carefully If in doubt consult your Northstar dealer Ensure that any holes cut are in a safe position and will not weaken the boat s structure If in doubt consult a qualified boat builder Do not install plastic through hull transducers in solid wooden hulls Leaking through the hull may result Do not install bonze transducers in metal hulls This will cause electrolytic corrosion that may result in damage to the hull o
46. t Comms Explorer 4380nly ssssseesssrrrrersrrrrrrrrrrrrrrrrrrr rr rr rr rr ers ra 15 3 9 Setup gt Calibrate she beta kan ikea RR NEN ESA be a a a ia 15 4Using the Explorer 435 and Explorer 438 4 1 Interpreting the display sseeeeeserererrrrrerrrrrr ence eee e eens eneeenaeetneeenas 4 2 Fish detection and display ssererererrrrrrerrrrrrr rr rr rer rr rr rr rr rr rr rr rr a ER ET a Er T AP EA E RA NAT EST RANN oe VERA TNA ER NHR ASA NAN DEER V NR 454 RANGC si oas s nded EE NISSE SANERAS SR NT area laren 5 The Displays ccssssssssssssssssssssssssssssssssssscssssssssessnssccssssssssnsscesssssessssssessnssssussssecsssssessnsesessssssessnesesenesssess 21 51 SONar displays isdaceestsiiatned obs en eecee A eles cae ade eo AR E aaah 22 5 2 Sonar ZOOM display morreran oirir ianei a a sl a idea AE N E Fa NRA 22 5 3 Sonar Bott m display srren ssmsisosmuet sker beh eee ene e ARM a e neneiia Nia 22 5 4 Sonar A Scope display s sssssssesererererererrrrerrrrrrrrrrr rr rr rr rer rr rr rr rr ra 23 5 5 Fuel display Explorer 438 only sssssessrresssrresrrrrrrrrrrrrrrrsrrrrrrrrr sr rr rr KRKA KRK KRK rn nn 23 5 6 Data display ss ceiaeie anneni eraren BV EAA Vr NRA LA Ae E AE 24 6 Installation and Maintenance ss sssssssssssssssssssscessssscssssssssssssssssssesssssssssnssesesssssssnssecessssessnsesssssssseesees 24 6 1 What comes with this PrOClUCt sssseeesrrsrrrrrrrrrrrrrrrrrrrrr rer rer rr rer rt 24 6 2 Options and Accessories ss
47. tom This will produce a flat bottom trace on the screen The appearance of the Sonar and Zoom screens can be changed to suit individual preferences 4 2 Fish detection and display Where to find fish Underwater features like reefs wrecks and rocky outcrops attract fish Use the sonar to find these features then look for fish by passing over the feature slowly several times using the Zoom display see section 5 2 Sonar Zoom display If there is a current the fish will often be found downstream of the feature When fishing with the Explorer 435 and Explorer 438 with the Fish symbols Of a weak fuzzy band may appear between the bottom trace and surface This might indicate a thermocline a rapid change in water temperature such as the edge of a warm or cold current The temperature difference can form a barrier which the fish may not swim through In fresh water fish often collect around a thermocline Fish symbols The fish symbol can be customized or switched off altogether so that the echoes are not converted to fish symbols on the display See section 3 2 Setup gt Sonar The differences between Fish symbol On and Off are Fish symbols On Using Northstar s SBN sonar technology the fishfinder analyses all echoes and eliminates most false signals and clutter so that remaining targets are most likely fish Depending on the strength of Note Times indicated are for illustration only echoes they are
48. trigger value Fish 1 short echo matches the fish a OF FE RE beep profile selected by ish filter Temp 1 2 sec temperature equals he alarm trigger value Temp 2 sec rate of change of rate emperature equals the alarm trigger value Low 2sec batter battery voltage is ess than the alarm rigger value I Low 2sec fuel remaining equals uel he alarm trigger value E The values can be changed independently of each other These log values are saved when the unit is turned off Reset trip dist Explorer 438 only This resets the trip distance to zero Reset total dist Explorer 438 only This option resets the total distance to zero Reset engine hours Use this option to reset the engine hours to zero This can be useful after an engine service or to count the engine hours between service intervals Alarms can be set enabled to automatically detect certain conditions such as the water being too shallow Alarms that are enabled are shown as black icons in the Alarm status box on the sonar displays When an enabled alarm is triggered the beeper sounds an alarm message is displayed and the alarm status icon is shown in red Press gt or MENU to acknowledge the alarm stop the beeper and close the alarm window This does not disable the alarm Alarms automatically re enable The Too shallow Too Deep and Low battery alarms autom
49. ue of 5 seconds default setting will give a satisfactory result for two stroke carburettor engines This setting affects the Fuel flowand Fuel economy reading on the Fuel display see section 5 5 Fuel display but it does not affect the Fuel used reading 3 Press gt at any data field to show the list of data items that can be displayed there 4 Highlight the required data item and press gt The data item is immediately displayed in that data field 5 Press lt or MENU when finished Time base To change the Time base of the temperature graph select Time base and press gt Choose between 5 mins 10 mins 20 mins 1 hour and 2 hours and press gt to confirm Northstar Explorer 435 438 Installation and Operation Manual 13 3 5 Setup gt Logs Press MENU twice to display the Setup menu then select Logs Reset trip dist Reset total dist Reset engine hours Trip dist 0 00 nm Total dist 0 00 nm Engine hours O hrs 3 6 Setup gt Alarms Press MENU twice to display the Setup menu then select Alarms Too shallow jor Too deep Off Fish Off Temperature Off Temperature rate Off Low battery Off Low fuel Off Trigger settings can be defined to suit the boat and individual preferences as follows c Alarm Beeper Alarm condition is Name Cycle met when the Too 1 5 sec depth is less than shallo he alarm trigger value Too 1 2 sec depth is greater than deep he alarm
50. v com AUSTRALIA PO Box 479 Gladesville NSW 2111 AUSTRALIA Ph 61 2 9879 9060 Fax 61 2 9879 9009 northstaraus northstarnav com NEW ZEALAND PO Box 68 155 Newton Auckland Auckland NEW ZEALAND Ph 64 9 481 0500 Fax 64 9 481 0590 northstarnz northstarnav com www northstarnav com NORTHSTAR FE cco Made in New Zealand MN000598A G
51. ws the most fish detail Medium or Slow scroll speeds result in sonar information being displayed over a longer period but with less detail See Section 4 1 nterpreting the display for more information Fish filter Use this to select the minimum fish symbol size to be detected and displayed There is a choice of Small Mediumand Large Northstar Explorer 435 438 Installation and Operation Manual 11 Palette Use this to select a color palette Each color within the palette represents a different echo strength as shown on the sonar displays There is a choice of five color palettes Bl ack Blue White Vividand8 color The first four display more detail whilst the 8 color palette shows a greater distinction of signal strength between each adjacent color For the 16 color palette each color covers 1 5 dB signal range For the 8 color palette each color covers 3 dB signal range Color bar This shows the range of colors used for the selected color palette It can be switched On or Of If switched On it is displayed down the left hand side of all the sonar displays Digit size Use this to change the size of the depth display on the sonar displays There is a choice of Small Mediumand Large Bottom lock f Bottom lock is On the zoom section moves so the bottom is always displayed in the zoom section regardless of changes in depth fBottom lock is Off the bottom will not be displayed in the zoom section when
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