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General| Brand | Simrad |
|---|---|
| Model | B&G NAC-2 |
| Category | Autopilot System |
| Language | English |
Legal statement regarding product use and liability for accidents or damage.
Specifies the official language version of documentation in case of translation conflicts.
Lists registered trademarks related to the product and its industry.
States the copyright holder and year for the product documentation.
Informs about warranty details and where to find more information.
Explains the manual's intended audience and highlights important text conventions.
Notes the software version the manual is written for and where to find updates.
Describes the core functions and intended applications of the NAC-2 and NAC-3 autopilot units.
Details the various control units compatible with NAC-2 and NAC-3 autopilot systems.
Explains that not all functions may be accessible depending on the controller used.
Mentions that the user interface presentation varies across different displays.
Emphasizes the importance of proper setup for correct autopilot functionality.
Outlines the process of selecting and configuring data sources required for autopilot setup.
Explains how selecting boat type, length, and cruising speed affects autopilot parameters.
Used by the autopilot system to calculate steering parameters.
Used by the autopilot system to calculate steering parameters when speed info is unavailable.
Details how drive configuration controls the autopilot's operation of the steering system.
Lists NMEA 2000 Parameter Group Numbers relevant to the autopilot system.
Describes options for setting the autopilot's drive control output, such as Solenoid or Reversible motor.
Specifies the nominal drive voltage for the unit and potential risks of incorrect selection.
Explains how the Engage output is used for clutch or auto modes to engage the drive unit.
Provides physical dimensions and specifications for the NAC-2 unit.
Provides physical dimensions and specifications for the NAC-3 unit.
Lists compliance and regulatory approvals for the NAC-3 unit.
Details electrical characteristics like supply voltage and power consumption for the NAC-3.
Covers operating and storage temperatures, waterproof rating, and humidity for the NAC-3.
Describes NMEA 2000 and NMEA 0183 connectivity options for the NAC-3.
Explains drive control options for reversible motors and solenoid control for the NAC-3.
Details the function of the Engage output for bypass/clutch mechanisms on the NAC-3.
Guides through the process of setting up the rudder source and performing calibration.
Describes the process of calibrating rudder feedback to determine direction and sensitivity.
Details how to test the rudder drive to verify direction and response.
Lists compliance and regulatory approvals for the NAC-2 unit.
Details electrical characteristics like supply voltage and power consumption for the NAC-2.
Covers operating and storage temperatures, waterproof rating, and humidity for the NAC-2.
Describes NMEA 2000 and NMEA 0183 connectivity options for the NAC-2.
Provides physical dimensions, weight, and safe distance for the NAC-2.
States the warranty period for the NAC-2 unit.
Explains how to perform Virtual Rudder Feedback calibration for rudder movement and speed ratio.
Guides on calibrating the compass and compensating for offsets for optimal autopilot performance.
Explains the process and implications of resetting the autopilot computer via the AP44 interface.
Outlines minimal preventative maintenance tasks for the unit.
Advises visual inspection of connectors and ensuring locks are properly seated.
Describes how to update the autopilot computer's software and where to find the latest version.
Explains how to reset the autopilot to its factory default settings.
Defines the speed at which the system switches between Low and High speed steering profiles.
Corrects the rudder zero position if the boat steers straight with a slight offset.
Used for manually setting the preferred turn rate of the boat during seatrials.
Recommends tuning autopilot separately for low and high speed profiles after seatrials.
Lists available automatic turn patterns like Spiral, Zigzag, Square, and Lazy-S.
Provides a checklist to verify all units are installed, configured, and tested correctly.
Refers to noting down boat-specific settings like type, length, and cruising speed.
Covers drive type, control method, nominal voltage, and engage settings for the drive unit.
Details parameters related to sailing, such as wind mode, tack time, and tack angle.
Explains settings for High and Low speed steering profiles, including turn rate and rudder gain.
Explains how rudder gain affects heading error compensation and steering stability.
Describes counter rudder adjustment for stopping turns and its dependence on vessel characteristics.
Makes the vessel turn in a spiral with a decreasing or increasing radius.
Steers the vessel in a zigzag pattern with defined course changes and leg distance.
Turns the vessel 90° automatically after travelling a defined leg distance.
Makes the vessel yaw around the main heading with course change and turn radius variables.
Enables the autopilot to follow a specific depth contour.
Explains how to configure steering profiles for different boat speeds and user preferences.
Used for manually setting the turn rate defined during seatrials.
Controls how fast the autopilot applies rudder to compensate for heading offsets.
Defines how the system moves the rudder when switching from power steering to automatic mode.
Determines the dynamic range of rudder movement before restriction and alarm.
Sets the limit for the off heading alarm based on deviation from the set heading.
Defines how aggressively the autopilot steers towards the active route's leg.
Limits how steeply the autopilot approaches the track to prevent excessive angles.
Prompts for verification if an automatic course change exceeds a set limit.
Parameters available only if the boat type is set to SAIL, including wind mode and tack settings.
Selects which wind angle the autopilot steers towards (Auto, Apparent, or True).
Controls how fast the autopilot performs tacks in wind mode.
Controls the angle the boat will tack to in AUTO mode.
Allows manual entry of speed if boat speed or SOG data is unreliable.
Settings for automatic turn features like U-turn, Spiral, Zigzag, and Square turns.
