A lit chartplotter can show an elegant card and, at the same time, use incorrect unit, a duplicate source or an unupdated data. the procedure starts from the complete code of the Garmin GPSMAP x3 installed and separates display, cartography, location, NMEA networks, Garmin network, sonar and peripherals. Each function is verified in its complete path, from the sensor to the screen, and then subject to a controlled loss of the source. Only so the dash really informs the timoniere instead of just lighting up.
Record full chartplotter code
the procedure starts from the part number, not from the only diagonal. The GPSMAP x3 family includes variants of measurement, cartography and sonar: each test is connected to the really installed unit. Control 1 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.
Secure the configuration
Waypoints, routes and settings are exported before the operation. You photograph the wiring and write down software, cards and peripherals, without entrusting the recovery to the operator's memory. Control 2 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.

Check recessed, bracket and seal
Fixings, planaring, ventilation, drainage and rear access occur. An apparently stable frame can hide tensions on the shell or a discontinuous seal requiring correction. Control 3 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.
Try readable day and night
Brightness, palette, backlight and angle are verified by the real position of the timoniere. At night the screen should not erase external vision; daytime critical data must remain readable. Control 4 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.
| Block | Documented decision | Check before delivery |
|---|---|---|
| Display | Format, resolution and command | Readable by all stations |
| Cartography | Cover, tab and updates | Open and verified real area |
| Network | NMEA 2000, NMEA 0183 and Garmin network | Sources appointed without conflicts |
| Sonar | Version and compatible transducer | Tried frequency and depth |
| Energy | Line, protection and fall | Maximum load measurement |
| Delivery | Backup, as-built and degraded procedure | Minutes signed by the crew |
Check the installed cartography
The board and cover are identified by opening the intended navigation area. Dates, subscriptions or updates applicable, available memory and presence of any notices on the cartographic product. Control 5 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.

Check location, datum and unit
The location is compared to a known point and there are datum, coordinate format, melt, depth, distance and speed. The wrong unit can make the graphics consistent but dangerous decision. Control 6 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.
Do not confuse planning and safe route
Automatic indications are treated as planning tips. the procedure imposes comparison with official cartography, alerts, fishing, height, conditions and observation before accepting a path. Check 7 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.
Inspection of feed under load
It identifies line, fuse, mass and section, then measures the voltage to the display with high brightness and active network. Reboots, falls or warm connectors open a diagnosis and block delivery. Control 8 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.

Check the NMEA 2000 backbone
Thermals, power, derivations and connectors are physically followed. The device list must show expected sources without unfolded duplication, and each instance is named in a recognizable way. Control 9 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.
Check the NMEA 0183 inputs
Transmitter, receiver, speed and expected phrases are recorded for each pair. Intermittent reception is diagnosed on the real link, without changing multiple settings simultaneously. Control 10 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.
Try the Garmin network
Sharing cartography, sonar, radar or data is tested at a time. It disconnects only according to procedure and is observed how each screen signals the loss of the source, avoiding induced failures. Control 11 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.

Validate engines and numerical data
Spins, temperature, pressure and other data appear only if compatible source and gateways provide them. the procedure compares values and alarms with the tools or diagnostics provided by the engine manufacturer. Control 12 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.
Configure AIS, DSC and alarms
Identified, targets, thresholds and filters are verified without turning the screen into a notification wall. An alarm excluded or silenced must be documented and motivated, not forgotten. Control 13 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.
Try sonar and transducer
The compatible version shows the model of the transducer, frequencies, offset and position. The test distinguishes background, noise and reading loss at different speeds, avoiding correcting with invented values. Check 14 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.

Control radar and overlap
Alignment, distance and radar status are verified according to the documentation of the connected device. A convincing graphic overlap does not replace the testing of the source and the line of faith. Control 15 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.
Test touchscreen, buttons and pages
Each command must respond with dry hands and in the navigation posture. The pages are simplified by maneuver, cruise and night, with a quick way to alarms and essential data. Control 16 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.

Simulate the loss of sources
They remove GPS, network or sensor in a controlled way and record the indication produced. The objective and verify that the helmsman recognizes an old, absent or replaced data from a different source. Control 17 records initial status, used tool, outcome and arrest criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.
Close with backup and minutes
Configuration and data are saved according to the available functions, the as-built is updated and the source list, limits and degraded procedure are delivered. Only after the test in navigation the record is closed. Control 18 records initial status, used tool, outcome and stop criterion. It changes only one variable at a time and, after each correction, repeat the tests influenced with the picture in the final configuration. Screens and photographs remain in the minutes along with the codes of components and active sources. When a manual or compatible is not available, the function remains unapproved and is not simulated with arbitrary data.

