1. Product Overview
The NOYAFA NF-919 is a versatile 3-in-1 optical fiber tester designed for comprehensive fiber optic network testing. It integrates an optical power meter, a stable light source, and a visual fault locator (VFL) into a single, compact device. This tool is essential for fiber cable construction and maintenance, offering rapid power and loss detection.
Key Features:
- Optical Power Measurement: Accurately measures optical power and attenuation values.
- Stable Light Source: Provides stable light output at various wavelengths and frequencies.
- Visual Fault Locator (VFL): Emits a red laser for identifying fiber breaks, bends, and faulty connectors.
- High-Definition Color Screen: Clear data display for easy operation.
- Universal Interface: Supports FC, SC, and ST fiber optic interfaces.
- Compact and Portable: Designed for one-hand operation and easy portability.
- Durable Design: ABS engineering plastic with silicone edge protection for impact resistance.
- Rechargeable Battery: Built-in 1500mAh lithium battery with Type-C charging.
2. Package Contents
Upon opening your NOYAFA NF-919 package, please verify that all items listed below are present and in good condition:
- 1x NF-919 Main Tester
- 1x USB Type-C Charging Cable
- Quality Certificate
- 1x Lithium Battery Precautions Card
- 1x User Manual (this document)
- 1x Carry Bag
- 1x Color Box
3. Device Layout and Interface
Familiarize yourself with the NF-919's physical layout and button functions before operation.
Ports:
- OPM Port: For optical power measurement.
- SL Port: For stable light source output.
- VFL Port (RL): For visual fault locator (red light) output.
- USB Type-C Port: For charging the device.
Buttons:
- On/Off Button: Powers the device on or off.
- REF Button: Sets the reference for relative power (loss) testing in OPM mode.
- dBm/W Button: Cycles through power units (dBm, W) in OPM mode.
- OP/SL Button: Switches between Optical Power (OP) and Stable Light Source (SL) functions.
- λ/RL Button: Switches between wavelengths (λ) in OPM/SL modes and activates Red Light (RL) function.
- Frequency Button (Hz): Adjusts the frequency in SL and RL modes.
4. Setup and Charging
4.1 Initial Charging
Before first use, fully charge the device using the provided USB Type-C cable.
- Connect the USB Type-C cable to the device's charging port.
- Connect the other end to a standard USB power adapter (not included) or a computer USB port.
- The battery indicator on the LCD will show charging status.
4.2 Power On/Off
- Press and hold the On/Off button to power the device on or off.
5. Operating Instructions
The NF-919 offers three primary functions: Optical Power Meter (OPM), Stable Light Source (SL), and Visual Fault Locator (VFL/Red Light).
5.1 Stable Light Source Function (SL)
This function provides a stable optical signal for testing fiber optic cables.
- Press the OP/SL button to switch to SL mode. The display will show 'SL'.
- Press the λ/RL button to cycle through available wavelengths: 1310nm, 1550nm.
- Press the Frequency button to change the output frequency: 00 (continuous), 270Hz, 1000Hz, 2000Hz.
- Connect the fiber to be tested to the SL port.
5.2 Optical Power Meter Function (OPM)
This function measures the optical power and attenuation in fiber optic networks.
- Press the OP/SL button to switch to OP mode. The display will show 'OP'.
- Press the λ/RL button to cycle through the measurement wavelengths: 850nm, 980nm, 1270nm, 1300nm, 1310nm, 1490nm, 1550nm, 1577nm, 1625nm, 1650nm.
- Press the dBm/W button to switch between power units: dBm, mW, uW, nW.
- Connect the fiber to be measured to the OPM port. The current optical power will be displayed.
- REF Function (Relative Power/Loss Test): To measure optical attenuation, first establish a reference power. With a known good fiber connected and stable power reading, press the REF button. The display will show 'Ref' and the current power reading will be set as the reference (0.00dB). Then, connect the fiber segment or component you wish to test for loss. The display will show the attenuation relative to the reference.
5.3 Visual Fault Locator (VFL) / Red Light Function (RL)
This function uses a red laser to visually locate faults in fiber optic cables.
- Press the λ/RL button to activate the Red Light function. The display will show 'RL' and the wavelength 650nm.
- Press the Frequency button to switch between continuous (00Hz) and flashing (01Hz) modes.
- Connect the fiber to the VFL port. Observe the fiber for red light leakage at fault points.
6. Maintenance and Care
6.1 Cleaning
- Regularly clean the optical ports (OPM, SL, VFL) with a lint-free swab and optical cleaning solution to ensure accurate measurements and prevent damage.
- Wipe the device's exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents.
6.2 Storage
- When not in use, always cover the optical ports with their protective caps to prevent dust and debris from entering.
- Store the device in its carry bag in a cool, dry place, away from direct sunlight and extreme temperatures.
6.3 Battery Care
- Recharge the battery when the low battery indicator appears on the screen.
- If storing for an extended period, charge the battery to approximately 50% and recharge every 3-6 months to maintain battery health.
7. Troubleshooting
- Device does not power on: Ensure the battery is charged. Connect to a power source using the Type-C cable and try again.
- Inaccurate OPM readings: Clean the OPM port and the fiber connector ends. Ensure the correct wavelength is selected for measurement.
- VFL red light is dim or absent: Ensure the VFL port is clean and the fiber is properly connected. Check battery level.
- Device shuts off unexpectedly: The device has an intelligent standby mode and will automatically shut off after 30 minutes of inactivity. This feature can be toggled on/off in settings (refer to the full manual for detailed instructions if available). If it shuts off during active use, check battery level.
8. Specifications
The following table details the technical specifications of the NOYAFA NF-919:
| Feature | Description |
|---|---|
| Model Number | NF-919 |
| Display | Color LCD |
| Light Source Function Wavelengths | 1310nm, 1550nm |
| Light Source Function Frequencies | 00Hz, 270Hz, 1000Hz, 2000Hz |
| OPM Test Function Wavelengths | 850nm, 980nm, 1270nm, 1300nm, 1310nm, 1490nm, 1550nm, 1577nm, 1625nm, 1650nm |
| OPM Test Function Units | dBm, W, uW, nW |
| OPM Test Function REF | Yes (for relative power/loss testing) |
| Red Light Function Wavelength | 650nm |
| Red Light Function Frequencies | 00Hz (Steady on), 01Hz (Flashing) |
| Auto-off | 30 minutes of inactivity (can be set on/off) |
| Low Battery Indication | Yes |
| Working Temperature | -20°C ~ 50°C |
| Power Supply | 3.7V 1500mA Lithium Battery |
| Product Dimensions | 139mm x 84mm x 29mm (5.47in x 3.30in x 1.14in) |
| Measurement Error | Less than ±0.3dB |
| Measurement Range | -60 to +8dBm |
9. User Tips
- Always ensure fiber ends are clean before connecting to the tester to prevent damage to the ports and ensure accurate readings.
- When using the VFL, avoid direct eye exposure to the red laser light.
- Utilize the REF function in OPM mode to accurately measure insertion loss of fiber components or splices.
- The compact size makes it ideal for fieldwork; always use the provided carry bag for protection during transport.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact NOYAFA Official Store directly. Keep your purchase receipt as proof of purchase.
