Furuno FA User Manual (English)

Questions and Answers:

S
Scott AlvarezSep 4, 2025
What causes no noise or echo on Furuno FA Marine Radar when gain is adjusted?
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  Sarah MaldonadoSep 4, 2025
  If the Furuno Marine Radar shows marks and indications but no noise or echo when the gain is adjusted with A/C SEA set at minimum, the cause may be the IF amplifier, the signal cable between the antenna and processor unit, or the video amplifier board. To resolve this: 1. Replace the IF amplifier. 2. Check the coaxial cable continuously and its isolation. Disconnect the plug and lugs at both ends of the coaxial cable before checking it with an ohmmeter. 3. Check the video coax line for a secure connection. If the connection is good, replace the SPU board.
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Eric MitchellAug 22, 2025
What to do if Furuno Marine Radar does not turn on?
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  Nathan MartinezAug 23, 2025
  If the Furuno Marine Radar does not operate after being powered on, the possible causes are: a blown fuse, incorrect mains voltage/polarity, or a faulty power supply board. You can try the following: replace the blown fuse, correct the wiring and input voltage, or replace the power supply board.
E
Erik AlvaradoSep 2, 2025
What to do if Furuno FA Marine Radar has poor sensitivity after tuning?
- M
  Matthew AdamsSep 2, 2025
  If the Furuno Marine Radar has poor sensitivity even after tuning, the cause may be that the 2nd trace echo rejector is on or there is dirt on the radiator face. To solve this: * Turn off the 2nd trace echo rejector. * Clean the radiator face.
B
Brooke JenkinsSep 1, 2025
What causes Furuno Marine Radar ARPA target not to be tracked correctly?
- D
  Derek GrossSep 1, 2025
  If an ARPA target is not being tracked correctly on the Furuno Marine Radar, it may be due to poor definition of targets in sea clutter. Adjust the A/C SEA and A/C RAIN.
D
Danny SchwartzAug 31, 2025
How to display range rings on Furuno FA?
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  Richard MosleyAug 31, 2025
  If range rings are not displayed on the Furuno Marine Radar, try turning on the range rings in the MARK menu. If they still do not appear, their brilliance may be too low; adjust their brilliance in the BRILL menu.
T
Tyler JamesAug 29, 2025
Why is Furuno Marine Radar true motion not working?
- D
  Dennis WileyAug 29, 2025
  If the true motion presentation is not working correctly on the Furuno Marine Radar, the potential causes are: poor contact of the MODE key (if you have a full keyboard), the selection not being accessed, incorrect speed entry, or inaccurate TM display. You can try the following: 1. Press the MODE key a little harder. 2. Press the MODE key or operate the PRESENTATION MODE box until TM appears. 3. Enter the correct own ship speed. 4. Ensure that the speed and compass inputs are accurate.
T
Travis MartinAug 28, 2025
Why is Furuno Marine Radar target not tracked correctly?
- I
  ipalmerAug 28, 2025
  If a target is not tracked correctly on the Furuno Marine Radar, it may be due to poor definition of targets in sea clutter. Try adjusting the A/C SEA and A/C RAIN controls.
G
gavinmoyerAug 27, 2025
How to fix Furuno FA Marine Radar picture freeze?
- S
  Sharon PrestonAug 27, 2025
  If the Furuno Marine Radar picture is not updating or is frozen, turn the power off and on again to restore normal operation.
X
xthorntonAug 26, 2025
What to do if Furuno FA shows marks but no echo?
- L
  Lisa DawsonAug 27, 2025
  If the Furuno Marine Radar displays marks, indications, and noise but no echo, check for a blown fuse in the processor unit.
L
lriveraAug 25, 2025
How to fix Furuno FA when range is changed but picture doesn't?
- A
  Aaron Thompson DDSAug 26, 2025
  If the Furuno Marine Radar picture does not change when the range is adjusted, the cause may be a defective range key or video freeze up. Try pressing the RANGE [+] and [-] keys (or RANGE box) several times. If that doesn't work, try turning the power off and on again.

Furuno FA Specifications

General

Category	Marine Radar
Range	Up to 96 nautical miles
Antenna Rotation Speed	24 or 48 rpm
Display	LCD color display
Power Output	25 kW
Frequency	X-band (9.4 GHz)

Summary

SAFETY INSTRUCTIONS

Radio Frequency Radiation Hazard

Details RF radiation hazard from radar antenna and safety distances.

Electrical Shock Hazard

Warnings about electrical shock hazards and safety precautions when working with equipment.

Warning Labels

Information about warning labels attached to the equipment for safety.

SPECIFICATIONS OF MARINE RADAR/ARPA

ANTENNA RADIATORS

Details antenna types, beam width, polarization, and rotation.

RF TRANSCEIVER

Specifies frequency, output power, pulselength, PRF, and IF.

DISPLAY UNIT

Describes screen size, resolution, and effective radar diameter.

POWER SUPPLY

Details power supply requirements for display, processor, and antenna units.

RADAR OPERATION

Turning on the Power

Describes the procedure to turn the radar system on and off.

Control Unit

Details the available control units (RCU-014 and RCU-015) and their components.

Main Menu

Explains how to access and navigate the MAIN menu.

Tuning the Receiver

Covers choosing tuning methods and initializing the receiver.

Aligning Heading with Gyrocompass

Details the process of aligning the radar's heading display with the gyrocompass.

Presentation Modes

Lists and describes the available radar presentation modes.

Entering Own Ship's Speed

How to input own ship's speed for ARP and plotter functions.

Choosing the Range Scale

Details how to select the radar's range scale for optimal target observation.

Adjusting the Sensitivity

Describes how to adjust receiver sensitivity using the gain control.

Suppressing Sea Clutter

Explains how to suppress sea clutter using A/C SEA control.

Interference Rejector

Describes how to use the interference rejector to reduce radar interference.

Collision Assessment by Offset EBL

How to use offset EBLs to assess collision risk between targets.

Setting a Target Alarm

How to set target alarm zones to alert for targets entering specific areas.

Automatic Picture Setup According to Navigation Purpose

How to automatically adjust radar settings based on navigation needs.

RADAR OBSERVATION

General

Basic radar observation principles, including minimum and maximum ranges.

False Echoes

Explains common false echoes like multiple and sidelobe echoes.

SART (Search and Rescue Transponder)

Details SART detection, display, and general remarks.

RACON

Describes RACON signals and their appearance on the radar display.

ARP OPERATION

Usage Precautions

Key precautions and operational notes for using the ARP function.

Controls for ARP

Details the keyboard and trackball controls used for ARP functions.

Entering Own Ship's Speed

How to input own ship's speed for ARP and plotter functions.

Automatic Acquisition

How the ARP system automatically acquires and tracks targets.

Manual Acquisition

How to manually acquire and track targets using ARP.

Setting CPA/TCPA Alarm Ranges

How to set CPA/TCPA alarm ranges to detect potential collision risks.

Trial Maneuver

Simulates own ship's maneuver effects on tracked targets.

ARP Performance Test

How to run a performance test for the ARP system.

AIS OPERATION

Controls for AIS

Details the keyboard and trackball controls for AIS functions.

Enabling/Disabling the AIS

How to turn the AIS function on and off.

Turning AIS Display On/Off

How to control the visibility of AIS targets on the display.

Setting Up for a Voyage

How to input voyage data like ETA, destination, and crew for AIS.

Displaying Target Data

How to view detailed information for selected AIS targets.

Fusion of ARP and AIS Targets

How to combine ARP and AIS target data for a single display.

AIS System Messages

Explains common AIS system messages and their meanings.

VIDEO PLOTTER OPERATION

General

Overview of the video plotter's functions: plotting tracks, waypoints, and recording data.

Display Modes

Describes the two display modes: Radar and Radar + Video Plotter.

Radar Map

How to create and manage radar maps by adding marks and lines.

Marks and Lines

How to inscribe and erase marks and lines on the display.

Waypoints

How to enter, edit, erase, and display waypoints and nav lines.

Nav Lines

How to enter, edit, erase, and display navigation lines.

Recording Data

How to initialize memory cards and record data like tracks and settings.

Replaying Data

How to replay recorded data from memory cards.

MAINTENANCE, TROUBLESHOOTING

Periodic Maintenance Schedule

Provides a schedule for regular checks and maintenance tasks.

Replacing the Fuse

Details the procedure for replacing fuses in various units.

Easy Troubleshooting

Provides common troubleshooting steps for common user-fixable issues.

Advanced-level Troubleshooting

Guides qualified personnel through hardware and software troubleshooting for complex issues.

System Messages

Explains various system error messages and their meanings.

APPENDIX

Menu Tree

Visual representation of the radar's menu structure and navigation paths.

Digital Interface

Details input and output sentences for serial interfaces (RP Board, J4).

Parts Lists and Parts Location

Lists and shows locations of electrical parts for various radar units.

Related product manuals

Furuno FA User Manual

Table of Contents

Questions and Answers:

Furuno FA Specifications

Summary

SAFETY INSTRUCTIONS

Radio Frequency Radiation Hazard

Electrical Shock Hazard

Warning Labels

SPECIFICATIONS OF MARINE RADAR/ARPA

ANTENNA RADIATORS

RF TRANSCEIVER

DISPLAY UNIT

POWER SUPPLY

RADAR OPERATION

Turning on the Power

Control Unit

Main Menu

Tuning the Receiver

Aligning Heading with Gyrocompass

Presentation Modes

Entering Own Ship's Speed

Choosing the Range Scale

Adjusting the Sensitivity

Suppressing Sea Clutter

Interference Rejector

Collision Assessment by Offset EBL

Setting a Target Alarm

Automatic Picture Setup According to Navigation Purpose

RADAR OBSERVATION

General

False Echoes

SART (Search and Rescue Transponder)

RACON

ARP OPERATION

Usage Precautions

Controls for ARP

Entering Own Ship's Speed

Automatic Acquisition

Manual Acquisition

Setting CPA/TCPA Alarm Ranges

Trial Maneuver

ARP Performance Test

AIS OPERATION

Controls for AIS

Enabling/Disabling the AIS

Turning AIS Display On/Off

Setting Up for a Voyage

Displaying Target Data

Fusion of ARP and AIS Targets

AIS System Messages

VIDEO PLOTTER OPERATION

General

Display Modes

Radar Map

Marks and Lines

Waypoints

Nav Lines

Recording Data

Replaying Data

MAINTENANCE, TROUBLESHOOTING

Periodic Maintenance Schedule

Replacing the Fuse

Easy Troubleshooting

Advanced-level Troubleshooting

System Messages

APPENDIX

Menu Tree

Digital Interface

Parts Lists and Parts Location

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