1. Produktet er slutview
The Noyafa NF-198 is a GPS-enabled land meter designed for accurate measurement of area and length. It is suitable for various terrains, including mountainous, sloped, and flat fields. The device provides real-time tracking, displays measurement values, and can automatically calculate prices based on set parameters. It features a color screen for clear data visualization and supports data export for printing and analysis.

Figure 1: Noyafa NF-198 GPS Land Meter
Dette billede viser forsiden view of the Noyafa NF-198 GPS Land Meter, highlighting its display screen and control buttons. The device is blue and black with a wrist strap.
2. Product Components and Structure
The NF-198 device includes several key components and controls for its operation:

Figure 2: NF-198 Product Structure
This diagram labels the various parts and buttons of the NF-198 device, including the hanging hole, GPS signal indication, HD digital display screen, power status indication, On/Off button, Save function button, Back button, Pause button, Delete button, Left/Right/Upward/Downward adjustment buttons, Validator (Enter button), Backlit button, Data confirmation button, and Lighting light button.
2.1. Pakkens indhold
Sørg for, at alle komponenter er til stede ved udpakning:
- Noyafa NF-198 GPS Land Meter
- PCB (Printed Circuit Board - likely refers to internal components or a specific accessory)
- Brugervejledning (dette dokument)
- Carrying Pouch (as seen in packaging images)
- USB Cable (for data transfer/charging, implied)

Figur 3: Emballageindhold
This image displays the Noyafa NF-198 device alongside its retail packaging and a black carrying pouch, indicating the typical contents of the product package.
3. Opsætning og første brug
3.1. Batteriinstallation og opladning
The device comes with two 2000mAh lithium batteries. Ensure they are properly installed. Connect the device to a power source using the provided USB cable to charge the batteries before first use.
3.2. Tænd/sluk
Tryk og hold på Til/Fra button (refer to Figure 2) to power the device on or off.
3.3. GPS-signalopsamling
For accurate measurements, the device requires a strong GPS signal. Operate the device outdoors and away from tall buildings or dense foliage that may obstruct satellite signals. Wait until the satellite signal indicator shows at least 6 satellites before starting any measurement.
4. Betjeningsvejledning
The NF-198 offers various measurement modes and functions accessible via its main menu.

Figure 4: Main Menu Functions
This image displays the main menu of the NF-198, showing icons for S-Flat (flat area measurement), Length, S-Slope (slope area measurement), S-Width (width measurement), Vehicle (vehicle-carrier measurement), and Query (data query).
4.1. Area and Length Measurement
- From the main menu, select the desired measurement mode (e.g., S-Flat for flat area, S-Slope for slope area, Længde for linear distance).
- Walk along the perimeter of the area to be measured or along the line for length measurement. The device will track your movement.
- Tryk på Pause button to temporarily stop tracking, and Pause igen for at genoptage.
- Once the measurement is complete, the device will display the measuring value, figure track, and automatically calculate the price if configured.

Figure 5: Measurement Data Display
This image shows the NF-198 screen displaying measurement results, including Girth, S-Flat area, Piece, Total, and GPS coordinates (LON, LAT), along with the date and time.
4.2. Vehicle-Carrier Measurement
This mode allows for distance measurement while mounted on a vehicle. The distance can be adjusted according to specific needs. Select Køretøj from the main menu to activate this function.
4.3. Equal-Width Area Measurement
This function is used for measuring areas with a consistent width. Consult the on-screen instructions or specific manual section for detailed steps on using this mode.
4.4. Setting Unit Area Price
The device allows you to set a unit area price, enabling automatic price calculation after measurement. This can be done via 'manual testing' or 'auto testing' methods.

Figure 6: Settings Menu
This image shows the settings menu of the NF-198, where users can configure Area Unit, Area U/P (Unit Price), Len Unit, Len U/P, Mode, Backlight, Auto off, Coord, and TimeZone.
4.5. Datastyring
The NF-198 can save up to 100 sets of measurement data. Saved data can be reviewed and deleted directly on the device.

Figure 7: Data Review and Deletion
This image shows two screens from the NF-198: one listing saved measurement data (Delect, S-Flat, Length, S-Width with dates) and another showing a confirmation prompt to delete selected data.
4.6. Dataeksport
Test data and graphics trajectory can be exported to a computer for printing and further analysis. The device is compatible with Google Maps to show real graphics trajectory.

Figure 8: Data Export to Computer
This image illustrates the process of exporting data from the NF-198 to a computer, showing the device's main menu and a computer screen displaying a mapping software interface (resembling Google Earth) with options to connect, read data, and save images.
5. Nøglefunktioner
The Noyafa NF-198 GPS Land Meter incorporates several features to enhance its functionality:
- Avanceret positionering: Utilizes advanced chips for fast search positioning and ultra-high precision measurements.
- Versatile Measurement: Measures area and length of any shape, including mountainous, sloped, and flat land.
- Sporing i realtid: Displays real-time track and calculates total price.
- Farveskærm: Features a 2.8-inch large color screen for easy operation and clear visual data.
- Efficient Startup: Cold boot in approximately 30 seconds, warm boot in 3 seconds.
- Currency Detection: Includes a currency detection function.
- Integreret belysning: Equipped with an LED light and backlight function for use in low-light conditions.
- Evig kalender: Built-in calendar function.

Figur 9: Yderligere funktioner
This image highlights the currency detection, LED light, and backlight functions of the NF-198. It shows the device being used to detect currency, emitting light, and its screen with backlight activated.
6. Tekniske specifikationer
| Feature | Specifikation |
|---|---|
| Mærke | NOYAFA |
| Modelnummer | NF-198 |
| Varens vægt | 396 g |
| Pakkedimensioner | 22.1 x 15.5 x 5.5 cm |
| Skærmstørrelse | 2.8 Inches (as per image, JSON says 8 Inches, 2.8 is more consistent with product image) |
| Opløsning | 1280 x 720 (likely for internal processing, not screen resolution) |
| Forbindelsesteknologi | GPS |
| Operativsystem | Android (likely refers to internal OS, not user-facing) |
| Kompatibel enhed | Vehicles, Android devices (for data export/connectivity) |
| Batterier medfølger | Ja |
| Lithium batteri energiindhold | 3.7 wattimer |
| Lithium batteri vægt | 0.85 gram |
| Speciel funktion | Advanced Measurement and Tracking Capabilities |

Figur 10: Enhedens dimensioner
This image provides a visual representation of the NF-198's dimensions, indicating a height of 7.2 inches (18 cm).
7. Vedligeholdelse
- Rensning: Brug en blød, tør klud til at rengøre enheden. Undgå at bruge skrappe kemikalier eller slibende materialer.
- Opbevaring: Opbevar enheden et køligt, tørt sted væk fra direkte sollys og ekstreme temperaturer.
- Batteripleje: If the device will not be used for an extended period, fully charge the batteries and store them separately if possible, or periodically charge the device to maintain battery health.
8. Fejlfinding
If you encounter issues with your NF-198, consider the following:
- Intet GPS-signal:
- Ensure you are outdoors and in an open area, away from tall buildings or dense tree cover.
- Wait until the satellite signal indicator shows at least 6 satellites before starting measurement.
- Unøjagtige målinger:
- Ensure a stable GPS signal (at least 6 satellites).
- Avoid crossing your movement direction during measurement.
- The device is not recommended for areas less than 180 square meters.
- Problemer med dataeksport:
- Sørg for, at enheden er korrekt tilsluttet computeren via USB.
- Verify that the necessary software or drivers are installed on your computer.
- Note: Some older software versions for Google Earth export may no longer be compatible with current Google Earth versions.
- Enheden tænder ikke:
- Check battery charge level. Connect to charger.
- Sørg for, at batterierne er korrekt installeret.
9. Garanti og support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact Noyafa customer service directly. Keep your proof of purchase for warranty claims.





