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Manual NorthStar 491

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  • NorthStar 491 - page 1

    491 E CHO S OUNDER I NSTALLATION M ANUAL Rev A P art Number G M495 Northstar a unit of Brunswick New Technologies Marine Electronics 30 Sudbury Road Acton, Massachusetts 01720 www.NorthstarNav.com Service: 978/897-6600 Sales: 800/628-4487 ...

  • NorthStar 491 - page 2

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  • NorthStar 491 - page 3

    T able of C ontents S ECTI O N O N E — Intr oduction - - - - - - - - - - - - - - - - - - - - 1 W elcome to the N orthstar 491 - - - - - - - - - - - - - - - - - 1 Who should read this manual - - - - - - - - - - - - - - - - - 1 Scope of this manual - - - - - - - - - - - - - - - - - - - - - 1 Installation considerations - - - - - - - - - - - - - - - ...

  • NorthStar 491 - page 4

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  • NorthStar 491 - page 5

    491 INSTALLATION MANUAL Revision A PAGE 1 S ECTI O N O N E — Intr oduction W elcome to the Northstar 49 1 An echo sounder is a device that pro vides information about the water directly beneath a vessel. T he Northstar ec ho sounder system consists of: • the Northstar 491 echo sounder sensor • a Northstar navigation system suc h as the 962, 9 ...

  • NorthStar 491 - page 6

    S E CTI ON O N E — Introduction PAGE 2 491 INSTALLATION MANUAL Revision A • connecting the 491 to a transducer (see also the T ransducer Connec- tor Instructions —G M492) • troubleshooting and testing the system • technical specifications f or the 491 For inf ormation about obtaining technical support and returning the 491 for factory se ...

  • NorthStar 491 - page 7

    491 INSTALLATION MANUAL Revision A PAGE 3 S ECTI O N T WO — Installing the tr ansducer Saf ety consider ations WARNING! Be sure to turn the power off before starting the installation. Further , it is highly recommended that you keep power off while you’re performing the installation. If power is left on or turned on during the installation, fir ...

  • NorthStar 491 - page 8

    S E CTI ON T WO — Inst alling the transducer PAGE 4 491 INSTALLATION MANUAL Revision A Selecting a tr ansducer Northstar recommends using an Airmar transducer with the N orthstar 491 echo sounder. The Airmar B260, B7 4 4 and P66 can be obtained from Northstar as an installation kit with connectors installed. A table of Airmar transducer elements ...

  • NorthStar 491 - page 9

    S E CTI ON T WO — Inst alling the transducer 491 INSTALLATION MANUAL Revision A PAGE 5 Installation consider ations The f ollowing basic setup inf ormation isn’t a substitute for the installa- tion instructions provided b y the transducer’ s manufacturer . T o ensure that you meet all critical installation parameters, be sure to read and fol- ...

  • NorthStar 491 - page 10

    S E CTI ON T WO — Inst alling the transducer PAGE 6 491 INSTALLATION MANUAL Revision A • the path for running the transducer’ s cable is reasonably direct—keep in mind that the transducer cable is 33 feet long (10 meters). T o pre- vent damage, coil any excess cable and secure it • water turbulence and noise are minimal, decreasing the am ...

  • NorthStar 491 - page 11

    S E CTI ON T WO — Inst alling the transducer 491 INSTALLATION MANUAL Revision A PAGE 7 FI GURE 1: R ecommended installation locations for a tr ansducer Installing the tr ansducer A flat- bottom hull provides the best environment f or mounting the trans- ducer: It provides a horizontal surface and a constant water flo w over the transducer , wit ...

  • NorthStar 491 - page 12

    S E CTI ON T WO — Inst alling the transducer PAGE 8 491 INSTALLATION MANUAL Revision A FI GURE 2: R ecommended transducer incline angle FI GURE 3: T ypical finished thru-hull installation with a fairing block (Airmar B7 4 4V) Maintaining the tr ansducer Do not expose the transducer’ s face or plastic housing to gasoline or strong solvents, suc ...

  • NorthStar 491 - page 13

    S E CTI ON T WO — Inst alling the transducer 491 INSTALLATION MANUAL Revision A PAGE 9 FI GURE 4: A nti-fouling paint ar eas (for A irmar B7 44V) Cleaning a tr ansducer T o clean the transducer of heavy debris or foul sea gro wth, use a stiff brush or putty knife, but don’t scratc h the surfaces. Check the transducer every few weeks, maximum. U ...

  • NorthStar 491 - page 14

    S E CTI ON T WO — Inst alling the transducer PAGE 10 491 INSTALLATION MANUAL Revision A ...

  • NorthStar 491 - page 15

    491 INSTALLATION MANUAL Revision A PAGE 11 S ECTI O N TH R E E — Installing the 4 9 1 Saf ety consider ations WARNING! Be sure to turn the power off before starting the installation. Further , it is highly recommended that you keep the power off while you’re performing the installation. If power is left on or turned on during the installation, ...

  • NorthStar 491 - page 16

    SEC TI ON THREE — Installing the 49 1 PAGE 12 491 INSTALLATION MANUAL Revision A ...

  • NorthStar 491 - page 17

    SEC TI ON THREE — Installing the 49 1 491 INSTALLATION MANUAL Revision A PAGE 13 S ystem components Figure 5 on page 13 shows a configured 961/962 ec ho sounder system, and Figure 6 on page 13 shows a configured 957 /95 8/6 000i echo sounder system. Figur e 5: E cho sounder system components with the Northstar 9 6 1 /962 Figur e 6: E cho sounde ...

  • NorthStar 491 - page 18

    SEC TI ON THREE — Installing the 49 1 PAGE 14 491 INSTALLATION MANUAL Revision A Choosing a mounting location Before an y drilling or cutting takes place, carefully c hoose a mounting location for the 491 module that meets the follo wing criteria: • where the transducer cable is kept securely away from other wires • where the path for running ...

  • NorthStar 491 - page 19

    SEC TI ON THREE — Installing the 49 1 491 INSTALLATION MANUAL Revision A PAGE 15 W iring the 49 1 The majority of installation problems are caused b y shortcuts taken with system cables. When installing the 491, be sure that you: • assemble connectors carefully • don’t make sharp bends in the cables • leave service and drip loops, so that ...

  • NorthStar 491 - page 20

    SEC TI ON THREE — Installing the 49 1 PAGE 16 491 INSTALLATION MANUAL Revision A FI GURE 8: Interface cable connection fr om 96 1 /962 to 4 9 1 Violet Black Blue Brown Orange White Green Red (not connected) 961/962 P1 Connector Plug (Wiring Side View) Data Cable 16 17 18 13 6 5 4 3 2 1 14 15 11 10 9 8 7 12 T able 4: Cable connection between the 9 ...

  • NorthStar 491 - page 21

    SEC TI ON THREE — Installing the 49 1 491 INSTALLATION MANUAL Revision A PAGE 17 Connecting the 4 91 to the 957 /95 8/ 6 000i The connection between the 95 7 /95 8/6 000i and the 4 91 requires the 10- foot (3- meter) data cable supplied with the 4 91. The cable connects to the AUX port on the back of the navigator . The cable is shipped with the ...

  • NorthStar 491 - page 22

    SEC TI ON THREE — Installing the 49 1 PAGE 18 491 INSTALLATION MANUAL Revision A Connecting the 4 91 to a tr ansducer T ransducers purchased from N orthstar (see page 4) are shipped with a connector installed. The f ollowing inf ormation is supplied for transducers purchased elsewhere and f or cases where it is necessary to remove and reinstall t ...

  • NorthStar 491 - page 23

    SEC TI ON THREE — Installing the 49 1 491 INSTALLATION MANUAL Revision A PAGE 19 Plug the transducer cable into the TRANSDUCER connector of the 491. If your transducer doesn’t support speed, you can connect a separate speed sensor , such as the Airmar ST650, to pins 1, 2 and 3, as shown in the table. Initial checkout This section assumes that t ...

  • NorthStar 491 - page 24

    SEC TI ON THREE — Installing the 49 1 PAGE 20 491 INSTALLATION MANUAL Revision A For the 957 /95 8/6 000i Y ou must set the navigator’ s AU X port to “Sounder”: 1. Press the STAR key to display the OPTIONS/SERVICE INFO screen, then press the PORT SETUP OPTIONS key . 2. Set the AUX PORT option to Sounder , then press the ENTER key . The ST A ...

  • NorthStar 491 - page 25

    491 INSTALLATION MANUAL Revision A PAGE 21 S ECTI O N F O U R — T r oubleshooting and servicing the 4 9 1 C ommon 49 1 installation pr oblems T ypical problems you may encounter either during or after the 491 installation process are outlined in Figure 12 on page 22 and Figure 13 on page 23. In the 961/962, the diagnostics screen may also help pi ...

  • NorthStar 491 - page 26

    S E CTI ON F O U R — T roubleshooting and servic ing the PAGE 22 491 INSTALLATION MANUAL Revision A Figur e 1 2: 9 6 1 /962 echo sounder system troubleshooting No echoes display ed when ST AR ke y is pressed. Is the 961/962 software V ersion 3.0 or greater? Has NMEA Port 3 been configured for the 491? Check the 491's ST A T indicator Is the ...

  • NorthStar 491 - page 27

    S E CTI ON F O U R — T roubleshooting and servic ing the 491 INSTALLATION MANUAL Revision A PAGE 23 Figur e 1 3: 957 /95 8/6 000i echo sounder system troubleshooting No echoes displayed on sounder screen. Has the navigator ʼs Aux Port been configured for the 491? Check the 491's ST A T indicator Is the Advance Speed set to zero? YES NO YES ...

  • NorthStar 491 - page 28

    S E CTI ON F O U R — T roubleshooting and servic ing the PAGE 24 491 INSTALLATION MANUAL Revision A Getting technical support After you’ ve follo wed the instructions in this manual, if you need addi- tional technical or operations support f or the 491, or if you have any other service- related questions, you can contact either your dealer or t ...

  • NorthStar 491 - page 29

    S E CTI ON F O U R — T roubleshooting and servic ing the 491 INSTALLATION MANUAL Revision A PAGE 25 Hearing fr om you Y our f eedback is important and helps N orthstar ensure that this manual is a valuable resource for all marine tec hnicians. Send your questions, comments, or suggestions about this manual to: docs@northstarcmc.com Or dering r ep ...

  • NorthStar 491 - page 30

    S E CTI ON F O U R — T roubleshooting and servic ing the PAGE 26 491 INSTALLATION MANUAL Revision A Returning a 4 9 1 f or service If you have overnight or second-day shipping requirements, before ship- ping the 491, please call Northstar for turnaround time, freight c harges, and payment arrangements. The 491 should be shipped only in a properl ...

  • NorthStar 491 - page 31

    491 INSTALLATION MANUAL Revision A PAGE 27 A PPEN DIX A — T echnical specifications T able 8: 4 9 1 technical specifications Perf ormance characteristics Frequencies 50 and 200 kHz Output power 1 000 watts with dual-element transducers 600 watts with single-element transducers Pulse lengths 0. 1 to 2 ms Pulse repetition rate 30 to 6 00 pulses/m ...

  • NorthStar 491 - page 32

    AP P E N DI X A — T echnical spec ific ations PAGE 28 491 INSTALLATION MANUAL Revision A Manual controls Gain 0 to 75 dB Clutter 0 to 9 Signal level 0 to 5 Noise limiter ON /OF F White level Backg round color Range up to 3500 feet (1 000 meters) Advance speed 1 /8 to 2/ 1 Depth units Feet, meters, fathoms Installation c alibrations Speed, temper ...

  • NorthStar 491 - page 33

    491 INSTALLATION MANUAL Revision A PAGE 29 Glossary cavit ation The f ormation of bubbles, which may negativel y impact a transducer’ s readings by reducing its ability to put energy into the water . deadrise The rise of the bottom of a vessel abo ve a horizontal line at the center of the vessel; that is, the slope of the hull away from the horiz ...

  • NorthStar 491 - page 34

    Glossary PAGE 30 491 INSTALLATION MANUAL Revision A ...

  • NorthStar 491 - page 35

    491 INSTALLATION MANUAL Revision A PAGE 31 Inde x A Airmar Technology Corporation 4 C Cable 491 and 961/962 14 491 and ship’s power 14 491 to 957/958/6000i 16 Cautions installation 2, 3, 11 interference with 491 11 tampering with the 491 11 transducer 3, 5, 19 troubleshooting the 491 19 wiring the 491 14, 17 E Echo sounder components of system 1, ...

  • NorthStar 491 - page 36

    Index PAGE 32 491 INSTALLATION MANUAL Revision A overview 11 safety considerations 11 troubleshooting 21 wiring 14 transducer cautions 3, 5, 19 cavitation 5 hull thickness limits 6 noise problems 5 preferred mounting location 5 recommended incline angle 8 thru-hull installation with a fairing block 8 M Maintenance, transducer 8 N Northstar feedback ...

  • NorthStar 491 - page 37

    Index 491 INSTALLATION MANUAL Revision A PAGE 33 U Upgrades, obtaining software 18 W Water column, definition of 29 Website addresses Airmar Technology Corporation 4 Northstar 24 Northstar Technologies 24 ...

  • NorthStar 491 - page 38

    Index PAGE 34 491 INSTALLATION MANUAL Revision A ...

Manufacturer NorthStar Category Marine Radio

Documents that we receive from a manufacturer of a NorthStar 491 can be divided into several groups. They are, among others:
- NorthStar technical drawings
- 491 manuals
- NorthStar product data sheets
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All of them are important, but the most important information from the point of view of use of the device are in the user manual NorthStar 491.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals NorthStar 491, service manual, brief instructions and user manuals NorthStar 491. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product NorthStar 491.

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A complete manual for the device NorthStar 491, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use NorthStar 491 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of NorthStar 491.

A complete NorthStar manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual NorthStar 491 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the NorthStar 491, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the NorthStar 491, that we can find in the current document
3. Tips how to use the basic functions of the device NorthStar 491 - which should help us in our first steps of using NorthStar 491
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with NorthStar 491
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of NorthStar 491 in a specific country, if it was not possible to solve the problem on our own.

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