NorthStar Multi-Function Unit M121 - 9-4 Fish Detection and Display

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Northstar M121/M84 Installation and Operation Manual38

50 kHz display

200/50 kHz display Mixed display

1 minute ago

Comparison of the same fish scenario displayed at different frequencies:

30 seconds ago Now

200 kHz display

Main Page

Default Chapter2
- Table of Contents2
1 Introduction6
- Overview7
- Cleaning and Maintenance7
- Plug-In Cards8
- Removing and Replacing the Display Unit9
2 Basic Operation10
- Using the Keys12
- Turning on and off / Auto Power13
- Backlight and Night Mode13
- Man Overboard (MOB)14
- Alarms14
- Simulate Mode15
- The Main Windows15
3 Navigation: Chart20
- Introduction to Navigating20
- Chart Window22
- Distance and Bearing Calculator24
- Projected Course25
- Tracks and Tracking25
4 Video Window26
5 Navigation: Highway Window27
6 Navigation: Waypoints27
- Waypoints Window28
- Managing Waypoints28
7 Navigation: Routes30
- Routes Window30
- Managing Routes30
8 Satellites33
- Satellite Window34
9 Sonar Fishfinding: Introduction34
- Using the Instrument34
- Interpreting the Display35
- Single and Dual Frequency Fishfinding37
- Fish Detection and Display40
- Range41
- Gain and Threshold42
10 Sonar Fishfinding: Windows43
- Sonar History Window - no Split43
- Sonar Zoom and Full Screen Zoom Displays44
- Sonar Bottom Window45
- Sonar 50/200 Window45
- Sonar A-Scope Window46
11 Gauges Window47
12 Data Window47
13 Fuel Functions and Display48
- What the Fuel Computer Does48
- Fuel Display48
- When You Add or Remove Fuel49
- Low Fuel Alarm50
- Boat Speed Sensors50
- Fuel Consumption Curves52
- Calibration54
14 Tides Window55
15 User Card Window56
16 Ais58
- Viewing AIS Vessels58
- Dangerous Vessels59
- AIS Windows59
17 Dsc/Buddy Track Windows61
- The Windows61
- Using the Windows62
18 Radar63
- Radar Window63
- Radar Modes64
- Enabling the Radar Functionality64
- Selecting Standby Mode or Transmit Mode64
- Disabling the Radar Functionality64
- Adjusting the Quality of the Radar Window64
- Changing the Echo Expansion Setting66
- Turning the Target Trails on or off67
- Using the VRM/EBL67
- Changing the PPI Position69
- Using the Radar Guard Zones69
19 Setting up the M121/M8471
- Setup > System72
- Setup > Chart73
- Setup > Sonar76
- Setup > Radar77
- Setup > GPS80
- Setup > Fuel81
- Setup > Track82
- Setup > AIS83
- Setup > Logs84
- Setup > Alarms85
- Setup > Units86
- Setup > Comms86
- Setup > Calibrate87
- Setup > Time88
- Setup > Favorites89
- Setup > Simulate89
20 Installation90
- Installation: What else Comes with My M121/M8491
- Installation: Options and Accessories92
- Installation: the Display Unit93
- Installation: Power/Data Cable95
- Installation: GPS Antenna96
- Installation: Sonar Transducer97
- Installation: Northstar Petrol/Gasoline Sensors97
- Installation: Smartcraft98
- Installation: Radar98
- Installation: Other Navbus Instruments99
- Installation: Other NMEA Instruments100
- Installation: Setup and Test100
Appendix A - Specifications101
Appendix B - Troubleshooting104
- General Problems104
- GPS Navigation Problems105
- Fuel Consumption Problems105
- Sonar Fishfinding Problems106
- Radar Problems108
Appendix C Glossary and Navigation Data109
Appendix D Compliance Statements112

NorthStar Multi-Function Unit M121 - 9-4 Fish Detection and Display

Table of Contents