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Amy CobbSep 23, 2025
Why data and marks not displayed in transmit on Furuno Marine Radar?
- JJames PriceSep 23, 2025
If data and marks are not displayed in transmit on your Furuno Marine Radar, replace the SPU board.
Why data and marks not displayed in transmit on Furuno Marine Radar?
If data and marks are not displayed in transmit on your Furuno Marine Radar, replace the SPU board.
Why marks, indications and noise appear but no echo on Furuno Marine Radar?
If marks, indications, and noise appear but no echo (and the transmission leak representing your ship position is absent) on your Furuno Marine Radar, check the magnetron current. If the issue persists, replace the modulator board or the SPU board.
What to do if tuning is correctly adjusted, but sensitivity is poor on Furuno Marine Radar?
If tuning is correctly adjusted but sensitivity is poor on your Furuno Marine Radar, replace the magnetron and contact your dealer.
Why Furuno Marine Radar power cannot be turned on?
If the power cannot be turned on for your Furuno Marine Radar, the issue may be with the mains voltage/polarity. Correct the wiring and input voltage. Alternatively, the power supply board may need to be replaced.
Why is my Furuno Marine Radar power not turning on?
If your Furuno Marine Radar is not powering on, check the following: a blown fuse, the power connector to ensure it's fastened, the power cable connector for corrosion, the power cable for damage, and the battery for correct voltage output.
What to do if Furuno 1945 range is changed but radar picture does not change?
If you change the range on your Furuno Marine Radar and the picture doesn't change, try operating the RANGE key again. If that doesn't work and you cannot operate the RANGE key, replace the keypad. Alternatively, the SPU board may need replacing, or try turning the radar off and on.
What to do if Furuno 1945 Marine Radar picture not updated or picture freeze-up?
If your Furuno Marine Radar picture isn't updating or the picture freezes, check that the signal cables are fastened. If that doesn't solve the issue, the SPU board may need replacement. You can also try turning the radar off and on.
How to fix poor discrimination in range because of many echoes from the waves on Furuno Marine Radar?
To improve discrimination in range on your Furuno Marine Radar when there are many echoes from waves, adjust the A/C SEA control.
Why Furuno 1945 is correctly tuned but sensitivity is poor?
If your Furuno Marine Radar is correctly tuned but the sensitivity is poor, turn off the [2nd Echo Rejector] from the [Echo] menu. Also, clean the radiator. Check the magnetron current with the radar transmitting on 48 nm range and replace the magnetron if the current is below normal. Check MIC detecting current, if MIC detecting current is below normal value, MIC may have become detuned.
Why is my Furuno 1945 Marine Radar target not tracked correctly because of sea clutter?
If a target is not tracked correctly on your Furuno Marine Radar due to sea clutter, adjust the A/C SEA and A/C RAIN controls.
General| Brand | Furuno |
|---|---|
| Model | 1945 |
| Category | Marine Radar |
| Language | English |
Manual authorship, operator responsibilities, copyright, and equipment modifications.
Instructions for discarding the product according to local regulations.
Guidelines for disposing of used batteries, including EU and USA specific symbols.
Information on RF radiation hazards from the radar antenna and safe distances.
Warnings regarding electrical shock, opening equipment, and handling wet conditions.
Information on warning labels attached to the equipment and display unit.
Welcome message and introduction to the FURUNO MODEL 1835/1935/1945 Marine Radar.
Overview of the radar's main features, including display size and model variants.
Comparison of function availability across different radar types (River, Sea, IEC, Russian-River).
Diagram illustrating the basic system configuration of the radar equipment.
Description of the display unit's keys, controls, and cursorpad functions.
Procedure for turning the radar on/off and initiating transmission.
Detailed explanation of various indications displayed on the radar screen.
How to adjust the display brightness and control panel illumination.
Basic procedure for navigating and operating the radar's menu system.
Instructions for automatic and manual tuning of the radar receiver.
Overview and selection of different display modes like Head Up, North Up, True Motion.
Guidance on selecting appropriate radar range scales for optimal target viewing.
How to adjust the radar receiver's sensitivity automatically or manually.
Methods for reducing sea clutter using automatic or manual controls.
Techniques for reducing rain clutter using automatic or manual controls.
Setting up target alarms to alert for targets entering or exiting defined zones.
How to manually or automatically off-center the display for expanded view.
How to program function keys (F1, F2, F3) for one-touch access to required functions.
Using Noise Rejector and Wiper features to reduce unwanted signals on screen.
Activating the Watchman feature for radar monitoring and alerts.
Displaying navigation data during standby and at the bottom of the screen.
Explanation of minimum/maximum ranges and bearing/range resolution concepts.
Details on how bearing and range are measured and their accuracy.
Identification and causes of false echoes like multiple, sidelobe, and virtual images.
Description of Search and Rescue Transponder (SART) and Radar Beacon (RACON) signals.
Important precautions and controls for using the Automatic Radar Plotting Aid (ARPA).
Procedures for manually and automatically acquiring and tracking ARPA targets.
Methods for stopping the tracking of selected or all ARPA targets.
Understanding vector attributes like time, reference, and ship's vector.
Displaying past positions of ARPA targets to evaluate movement and actions.
Setting CPA/TCPA and Proximity alarms for collision course detection.
Controls for AIS operation and how to turn the AIS display on or off.
Understanding AIS symbols and managing targets (activating/sleeping).
Showing AIS target data in the data box and removing it.
Sorting AIS targets by various criteria and setting the display range.
Setting CPA/TCPA and Proximity alarms for AIS targets.
Setting the navigator mode (GPS/WAAS) and selecting the correct datum.
Configuring WAAS settings and monitoring GPS/WAAS satellite status.
When and how to perform a cold start for the GPS receiver.
Regular maintenance checks for the LCD, terminals, and antenna unit.
Guidance on replacing fuses and selecting the correct fuse type.
Information on the expected life of the magnetron and LCD backlight.
Basic procedures to restore normal operation for common problems.
Troubleshooting steps for hardware and software issues, typically for qualified technicians.
Performing self-tests to check system operation and provide information to technicians.
Procedures for testing the LCD display and other components like ARPA and GPS.
Details on range scales, pulselength, resolution, and accuracy.
Technical details of the antenna unit, including radiator type and beamwidth.
Specifications for the transceiver module, power output, and warm-up time.
Information on the display unit, screen type, and range scales.
Specifications for interface connections, power supply, and environmental conditions.
Minimum distances required for safe placement near compasses.
Statement of conformity with EU directives and applicable technical regulations.
