1. Product Overview
The Signal Fire Optical Power Meter & Visual Fault Locator is a versatile 4-in-1 mini portable fiber tester designed for comprehensive fiber network testing and maintenance. This compact device integrates an Optical Power Meter (OPM), Visual Fault Locator (VFL), LED light, and a network cable test function, making it an essential tool for fiber optic professionals.
Figure 1.1: Front view of the Signal Fire Optical Power Meter & Visual Fault Locator.
Key Features:
- Accurate & Professional Optical Power Meter: Provides precise measurements for fiber networks.
- Multi-Functions: Supports FC/SC/ST interfaces, self-calibration, large storage capacity, backlight, lighting function, and power-saving.
- Wavelength Memory & OPM Function: Six calibration wavelengths (850/1300/1310/1490/1550/1625nm) with a dynamic range up to 80dB and measurement error less than ±0.2dB.
- Visual Fault Locator (VFL): Used to locate optical fiber fractures, with continuous and flashing modes.
- Cable Tester: Integrated function for network cable testing.
- Built-in Lithium Battery: Offers up to 60 hours of operation in OPM mode and 90 days standby. Type-C interface for charging.
Figure 1.2: The device's compact design integrates OPM, VFL, LED, and Cable Test capabilities.
2. Setup
2.1 Unpacking and Inspection
Upon receiving your Signal Fire tester, carefully unpack all components and inspect for any signs of damage. Retain the packaging for future storage or transport.
2.2 Charging the Device
The device is equipped with a built-in lithium battery. Before first use, ensure the device is fully charged. Use the provided Type-C cable to connect the device to a compatible USB power source (e.g., wall adapter, power bank, computer USB port).
- A full charge typically takes approximately 3 hours.
- The battery indicator on the display will show charging status.
Figure 2.1: The device features a Type-C interface for convenient charging from various USB power sources.
2.3 Powering On/Off
To power on the device, press and hold the ON/OFF button for more than 2 seconds. To power off, press and hold the ON/OFF button again for more than 2 seconds.
3. Operating Instructions
3.1 Optical Power Meter (OPM) Function
The OPM function measures the optical power of fiber optic signals. It supports various wavelengths and connector types.
- Ensure the device is powered on.
- Connect the fiber optic cable to the OPM port using the appropriate 2.5mm universal connector (FC/SC/ST adapters are supported).
- Press the Wavelength button to cycle through the available calibration wavelengths: 850nm, 1300nm, 1310nm, 1490nm, 1550nm, and 1625nm. Select the wavelength corresponding to the signal being measured.
- The measured optical power (in dBm) and corresponding mW value will be displayed on the screen.
- To set a reference value (REF), press and hold the REF button for more than 2 seconds. This is useful for relative power measurements.
Figure 3.1: The OPM port with a connected fiber optic cable for power measurement.
3.2 Visual Fault Locator (VFL) Function
The VFL emits a visible red laser light into the fiber to help locate breaks, bends, or poor connections. It can easily penetrate long-distance optical fibers.
- Ensure the device is powered on.
- Connect the fiber optic cable to the VFL port.
- Press and hold the VFL button for more than 2 seconds to activate the VFL.
- Press the VFL button briefly to switch between continuous mode and flashing mode.
- Observe the fiber for any visible red light leakage, which indicates a fault.
- To turn off the VFL, press and hold the VFL button again for more than 2 seconds.
Figure 3.2: The VFL function provides a stable and strong red light source for fault detection.
3.3 Network Cable Test Function
The device can also perform basic network cable testing for RJ-45 connectors.
- Ensure the device is powered on.
- Connect one end of the RJ-45 network cable to the RJ-45 port on the device.
- Connect the other end of the RJ-45 network cable to the remote unit (if applicable, or loopback if testing a single cable).
- The device will display the test results, indicating continuity or any wiring faults.
Figure 3.3: The device's RJ-45 port for network cable testing.
3.4 Data Storage and View
The device has a large storage capacity, capable of storing up to 500 loop coverage records.
- To save a measurement record, press and hold the Save button for more than 2 seconds.
- To view stored records, use the up and down arrow keys (often integrated with other buttons, refer to button labels on the device) to scroll through the saved data.
Figure 3.4: The device allows timely storage and viewing of up to 500 measurement records.
3.5 Backlight and Lighting Function
The device features a backlight for the display and a built-in LED lighting function for use in low-light conditions.
- To toggle the backlight, press the ON/OFF button briefly (less than 2 seconds).
- To activate the LED light, press the dedicated light button (often indicated by a flashlight icon).
4. Maintenance
4.1 Cleaning
- Regularly clean the device's exterior with a soft, dry cloth.
- For optical ports, use specialized fiber optic cleaning tools and solutions to ensure accurate measurements and prevent damage. Never use abrasive materials or harsh chemicals.
- Keep the connector ports free from dust and debris by using dust caps when not in use.
4.2 Battery Care
- Charge the battery fully before long periods of storage.
- Avoid completely draining the battery frequently to prolong its lifespan.
- Store the device in a cool, dry place when not in use.
Figure 4.1: Battery performance details, highlighting quick charge and extended use/standby times.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery or no charge. | Charge the device fully using the Type-C cable. |
| Inaccurate OPM readings. | Dirty optical connector/port; Incorrect wavelength selected; Device needs calibration. | Clean connectors and ports. Ensure correct wavelength is selected. Use the self-calibration function if available, or contact support for recalibration. |
| VFL red light is dim or not visible. | Dirty VFL port; Fiber optic cable is severely damaged or disconnected. | Clean the VFL port. Check the fiber optic cable for severe damage or ensure it is properly connected. |
| Network cable test fails. | Faulty RJ-45 cable; Improper connection. | Inspect the RJ-45 cable for damage. Ensure both ends are securely connected to the device and remote unit (if used). |
6. Specifications
Technical specifications for the Signal Fire Optical Power Meter & Visual Fault Locator.
| Feature | Detail |
|---|---|
| Model | FWP-20 |
| PD Type | InGaAs |
| OPM Connector | 2.5mm Universal connector |
| Calibrated Wavelengths | 850/1300/1310/1490/1550/1625nm |
| Resolution | 0.01dB |
| Accuracy | ±0.2dB |
| Modulation Test | 270/330/1k/2kHz |
| VFL Connector | 2.5mm Universal connector |
| LED | Yes |
| RJ-45 Cable Test | Yes |
| Interface | Type-C |
| Battery | Lithium battery (450mAh) |
| Storage Temperature | -20~60°C, < 90%RH |
| Operating Temperature | -10~50°C, < 90%RH |
| Weight | 95g (approx. 3.35 oz) |
| Dimensions (L x W x H) | 100mm x 59mm x 28mm (approx. 3.94 x 2.32 x 1.10 inches) |
Figure 6.1: Overview of the device's compact design and technical specifications.
7. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the product packaging or contact Signal Fire customer service directly.
You may also visit the official Signal Fire store on Amazon for additional resources and contact options: Signal Fire Amazon Store.
