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General| Brand | NorthStar |
|---|---|
| Model | Multi-Function Unit M121 |
| Category | Diving Instrument |
| Language | English |
Provides a general overview of the Northstar M121/M84 unit's features and capabilities.
Details proper procedures for cleaning the instrument screen and maintaining its components.
Explains the types of C-MAP™ SD-Card plug-in cards and their usage.
Guides on how to safely remove and re-attach the display unit from its mounting bracket.
Explains the function of each button on the M121/M84 unit for navigation and operation.
Covers manual and automatic power control for the instrument, including auto-off settings.
Details how to adjust screen brightness and enable night mode for improved visibility.
Describes the MOB feature for saving the boat's position and navigating back to it.
Explains how the instrument alerts users to alarm conditions with visual and audible warnings.
Introduces the simulate mode for practicing functions without actual navigation data.
Provides an overview of the primary display windows and how to manage them.
Introduces the two primary methods of navigation: direct to a point or along a route.
Describes the chart window, its components, and how to interpret chart information.
Explains how to plot courses, measure distances and bearings, and convert them into routes.
Details how to display the projected position based on current speed and heading.
Covers recording, displaying, and managing boat tracks for later reference.
Guides on how to adjust brightness, contrast, and hue for the video display.
Explains how to zoom and pan the video image for better viewing.
Describes the list view of waypoints, their attributes, and navigation.
Covers creating, editing, displaying, deleting, and sorting waypoints.
Details the list of created routes, including name, start/end points, and distance.
Explains how to create, edit, display, and delete routes.
Provides information on GPS satellite status, time, and position accuracy.
Explains the basic principles of sonar operation and how echoes are detected and displayed.
Guides on how to read sonar windows, understand echo history, and identify bottom types.
Details the use of 50 kHz and 200 kHz frequencies for sonar and their respective advantages.
Explains how fish are detected, displayed as symbols or arches, and factors affecting visibility.
Covers setting the vertical depth displayed in the sonar window, including Auto and Manual modes.
Explains how to adjust gain and threshold settings to control sonar detail and reduce noise.
Describes the basic sonar history display showing echoes over time.
Explains how to use zoom features to magnify specific sections of the sonar history.
Details the sonar window that highlights bottom signals and sonar history.
Describes the split window displaying 50 kHz and 200 kHz sonar histories simultaneously.
Explains the A-Scope display for real-time echo strength and gain/threshold adjustment.
Outlines the capabilities of the fuel computer for monitoring fuel usage, range, and economy.
Describes the information presented on the fuel display, including speed, RPM, and fuel levels.
Explains the procedure for updating the instrument when fuel is added or removed from the tank.
Details how to set up and manage low fuel alarms for the instrument.
Discusses the selection and use of different boat speed sensors for fuel calculations.
Guides on creating and using fuel consumption curves to optimize engine performance and economy.
Explains how to calibrate fuel flow sensors for accurate readings.
Describes how to view and interpret AIS data for nearby vessels on the chart.
Explains how the instrument identifies and alerts to potentially dangerous vessels based on TCPA/CPA.
Covers accessing and managing different AIS display windows, including vessels and safety messages.
Introduces the Distress, Poll, and Buddy track windows for DSC radio communication and tracking.
Guides on displaying boats on the chart, navigating to them, and managing waypoints from DSC/Buddy track data.
Details the components and display elements of the radar window, including range rings and targets.
Explains the different operational modes for the radar system: Disabled, Warming, Standby, and Transmitting.
Covers the steps to activate the radar system and its warm-up procedure.
Describes how to quickly switch the radar between standby and active transmit modes.
Explains how to turn off or disable the radar system completely.
Provides guidance on improving radar display quality by adjusting settings like clutter and gain.
Explains how to use echo expansion to make small targets more visible at the expense of resolution.
Details how to enable or disable target trails to track moving objects on the radar display.
Guides on using Variable Range Markers (VRM) and Electronic Bearing Lines (EBL) to measure target distance and bearing.
Explains how to adjust the Plan Position Indicator (PPI) center for optimal viewing, especially in Relative motion mode.
Covers setting up radar guard zones to alert when targets enter or exit specific areas.
Covers general system settings like language, backlight, night mode, and factory reset.
Details chart display options including rotation, palette, map datum, and plotter modes.
Explains sonar settings such as frequency, scroll speed, fish symbols, and palette selection.
Covers radar settings including rotation, motion mode, interference filter, and installation parameters.
Details GPS source selection, static navigation, and speed/course filtering options.
Covers fuel sensor configuration, engine/tank settings, and fuel flow calibration.
Explains how to configure track recording intervals, display options, and manage tracks.
Covers filtering AIS vessels by type, distance, speed, and setting up dangerous vessel alarms.
Details options for resetting trip distance, total distance, and engine hours.
Explains how to configure various alarms, including arrival radius, anchor, XTE, and depth alarms.
Allows users to select preferred units for distance, speed, depth, temperature, and other measurements.
Covers NMEA output settings, data transmission, and NavBus group configuration.
Guides on calibrating speed, temperature, and keel offset for accurate sensor readings.
Covers setting the local time offset and date/time formats.
Explains how to save and manage favorite display configurations for quick access.
Covers configuring the simulate mode for practicing instrument functions.
Lists all the components and accessories included with the M121/M84 unit.
Describes optional sensors, instruments, and accessories that can be connected to the unit.
Provides detailed instructions and considerations for mounting the display unit.
Explains how to wire the power and data cable for basic or auto power operation.
Guides on selecting, installing, and configuring GPS antennas for navigation.
Details the installation process for the sonar transducer, including warnings.
Explains the installation of optional fuel sensors for petrol/gasoline engines.
Covers connecting the unit to SmartCraft engines via a gateway for engine data display.
Guides on installing and setting up the Northstar radar system.
Explains how to connect and configure other instruments using the NavBus system.
Details connecting and configuring instruments using the NMEA standard.
Covers the initial setup and testing procedures after installation to ensure proper operation.
Addresses common issues such as the instrument not turning on or off, or no display.
Troubleshoots issues related to GPS fix, position accuracy, and chart display.
Helps diagnose and resolve problems with fuel usage readings and alarms.
Addresses erratic sonar operation, bottom display issues, and signal problems.
Troubleshoots common radar display issues like overlay problems, false echoes, and interference.
