An absent target can depend on a shielded field, a sloping beam, an aggressive filter, unstable feed or inconsistent bow data. the procedure starts from safety and part number, inspects structure and wiring, then test scales, filters, Doppler, overlay, MARPA and alarms. Garmin specifications remain separated by model: no flow or function is attributed to a radar only because it belongs to the same family.
Identifying radar and part number
The diagnosis starts from the plate and the actual configuration. Fantom 18x, 24x, 54, 126 and 254 have different geometries and specifications: commercial name, color, antenna and pedestal are recorded without deductions. Control 1 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Secure the system
Before transmitting, the beam path is freed and the distances indicated by the manufacturer are respected. The antenna is not observed at close distance while transmitting and does not intervene on an open array in rotation. Control 2 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Inspect support and sealing
On the system off you control plate, tie rods, washers, locks, sealing and drainage. Slots, bending, water or corrosion impose structural verification before using the radar power as a functional test. Control 3 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Check quota and free field
360-degree obstacles are photographed, including mounts, lights, antennas and temporary equipment. The shadows observed on the screen are compared with these sectors, distinguishing them from electronic disturbances or incorrect adjustments. Control 4 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
| Control | Method | Required statement |
|---|---|---|
| Installation | Photos, quotas and clamps | No game or obstacle |
| Power supply | Standby and transmission measurement | Stable tension |
| Network | Inventory of doors and software | Radar Identified |
| Alignment | Known target and offset | Consistent detection |
| Disturbation | Powers activated once per time | Eco interpretable |
| Alarm | Area of guard and real target | Registered notice |
Check tilt and bow line
The platform is compared with the water line in the real setup. Then the offset is measured compared to a known target; correcting the software value without checking the mechanical alignment can mask a rotated mounting. Control 5 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Follow the power circuit
Battery, switch, fuse, connectors and mass are identified to the radar. The voltage is measured in standby and transmission, with other active users, so fallen and restarts are not confused with network problems. Control 6 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Confirm network and compatible
It is recorded if the system uses BlueNet, Garmin Marine Network, adapter or switch. Each ring is compared with chartplotter instructions and matrix; a physically connected door does not prove that software and functions are supported. Check 7 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Update without losing configuration
Chartplotter and radar versions are noted before the update. It keeps the profile of the pages and repeats the test after reboot, verifying that source, offset and planned areas have not changed. Control 8 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Try standby, transmission and rotation
The state passage must be recognizable and regular. For the selves, anomalous vibrations are heard; for the open arrays it is observed from a safe distance that nothing obstacles rotation, without touching or forcing the antenna. Control 9 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Open the short radius first
The initial test uses nearby and known targets, piers and coasts, avoiding judging from the only maximum radius. You regulate gain and filters starting from controlled conditions, annoting each modification and its effect. Control 10 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Compare the long radius
Then you go to larger scales and you experience continuous echoes. The maximum declared scope is not a promise in every condition: height, curvature, target, sea and weather influence what appears. Control 11 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Separating sea and rain clutter
Automatic and manual filters are compared without erasing useful targets. The state of the sea and rainfall is recorded; a clean image obtained with excessive suppression is not considered a better outcome. Control 12 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Verify MotionScope with real traffic
The targets approaching and distancing are observed in a controllable situation. Doppler color and help is compared with visual movement, AIS and distance variation, not used as the only anti-collision decision. The control 13 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Check echo trails and persistence
The historical tracks help to understand the bike, but the chosen duration changes the reading. The technician tries multiple settings and explains to the commander how to distinguish a useful trail from an overload screen. Control 14 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Try overlay and bow sensor
The coast and radar targets must overlap consistently with the paper. If the error changes with the route, heading, latency and calibration are checked; moving the radar offset does not solve an unstable bow data. Control 15 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Testing MARPA and guard area
With suitable targets it proves acquisition, loss and alarm. The requirements of the bow sensor remain those documented. The guard zone is set in a understandable way and the sound signal must be audible to the station. Control 16 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Simulate a network loss or power supply
The system switched off opens the circuit and occurs as the chartplotter signals the absent source. After restoration the radar must be recognized without leaving alarms or inconsistent settings. Control 17 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
Close with operational minutes
The report includes photos, odds, models, software, tensions, offsets, shadow areas, proven pages and limits. The commander receives a repeatable configuration and knows when to stop, use other feedback or call assistance. Control 18 retains initial status, tools, screen and result. You change only one variable at a time, then you restore the configuration before switching to the next test. Any missing echoes are related to industry, distance, asset and active utilities. If RF security, fixing or sealing are not certain, testing is suspended: a good radar image does not conform to a dangerous installation. The outcome also describes what was not possible to demonstrate.
