NorthStar Navigation 491 User Manuals

Table of Contents

• SECTION ONE - Introduction

  5
  • Welcome to the Northstar 491

    5
  • Who should read this manual

    5
  • Scope of this manual

    5
  • Installation considerations

    6
• SECTION TWO - Installing the transducer

  7
  • Safety considerations

    7
  • Selecting a transducer

    8
  • Installation considerations

    9
  • Choosing a mounting location

    9
  • Installing the transducer

    11
  • Maintaining the transducer

    12
    • Using anti-fouling paint

      12
    • Cleaning a transducer

      13
• SECTION THREE - Installing the 491

  15
  • Safety considerations

    15
  • System components

    17
  • Choosing a mounting location

    18
  • Mounting the 491

    18
  • Wiring the 491

    19
    • Electrical power requirements

      19
    • Connecting the 491 to ship’s power

      19
    • Connecting the 491 to the 961/962

      19
    • Connecting the 491 to the 957/958/ 6000i

      21
    • Connecting the 491 to a transducer

      22
  • Initial checkout

    23
    • Turning the 491 on

      23
      • For the 961/962

        23
      • For the 957/958/6000i

        24
    • Setting up the echo sounder

      24
    • Turning the 491 off

      24
  • Installation test checklist

    24
• SECTION FOUR - Troubleshooting and servicing the 491

  25
  • Common 491 installation problems

    25
  • The status LED

    25
  • Getting technical support

    28
    • Hearing from you

      29
  • Ordering replacement parts

    29
  • Servicing the 491

    29
  • Returning a 491 for service

    30
• APPENDIX A - Technical specifications

  31
• Glossary

  33
  • cavitation

    33
  • deadrise

    33
  • echo sounder

    33
  • fairing block

    33
  • transducer

    33
  • water column

    33
• Index

  35