1. Introduction
The Fluke Networks FIBERLERT-125 is a compact, non-contact fiber optic cable tester designed to quickly detect the presence of optical power in fiber optic cables and ports. This device simplifies the process of checking fiber activity, polarity, and connectivity without requiring complex setup or interpretation. It is compatible with single-mode and multimode UPC and APC patch cords and ports, detecting optical light in the 850 nm to 1625 nm range.
Safety Information
Always exercise caution when working with fiber optic systems. While the FIBERLERT-125 is a non-contact device, never look directly into active fiber optic cables or ports, as invisible laser radiation can cause eye damage. Ensure the work area is well-lit and free from obstructions. Follow all local safety regulations and guidelines for handling fiber optic equipment.
2. What's in the Box
- FIBERLERT-125 Fiber Optic Cable Tester
- Two AAA alkaline batteries (pre-installed or separate)
3. Product Overview
The FIBERLERT-125 is a pen-style device with a durable casing and a simple interface. It features a detection tip, an activation button, and an indicator light/speaker for feedback.
Figure 3.1: The Fluke Networks FIBERLERT-125 Fiber Optic Cable Tester. This image shows the overall design of the device, highlighting its compact, pen-like form factor with a white body, gray tip, and orange base.
Figure 3.2: Various views of the FIBERLERT-125. This composite image displays the device from different angles, including top, bottom, and side views, illustrating its ergonomic design and labeling.
4. Setup
4.1 Battery Installation
The FIBERLERT-125 requires two AAA alkaline batteries. These are typically included with the device. To install or replace batteries:
- Locate the battery compartment cover, usually at the base of the device.
- Open the cover by sliding or twisting as indicated on the device.
- Insert two AAA batteries, ensuring correct polarity (+/-) as marked inside the compartment.
- Close the battery compartment cover securely.
4.2 Powering On/Off
Press the green power button located on the device body to turn it on. The LightBeat feature will flash to indicate operation and battery status. The device will automatically power off after five minutes of inactivity to conserve battery life.
5. Operating Instructions
The FIBERLERT-125 is designed for straightforward operation. No complex setup or calibration is required.
5.1 Detecting Live Fiber
To detect an active fiber optic signal:
- Ensure the FIBERLERT-125 is powered on.
- Place the detection tip of the device directly in front of the fiber end face or port you wish to test. The device uses a non-contact method, so direct physical insertion into the port is not necessary.
- Observe the indicator light and listen for the audible tone.
Figure 5.1: Using the FIBERLERT-125 to test a fiber optic patch cord. The image shows the device's tip positioned near the end of a yellow fiber optic cable, indicating a non-contact detection method.
Figure 5.2: A user holding the FIBERLERT-125 near a fiber optic connector to detect a signal. The device's indicator light is visible, suggesting an active fiber connection.
5.2 Interpreting Indicators
- Light and Tone: A flashing light and an audible tone indicate the presence of an active optical signal. This means the fiber is "live."
- No Light/Tone: The absence of a flashing light and tone indicates no detectable optical signal. This could mean the fiber is inactive, disconnected, or there is a fault.
- LightBeat: The LightBeat feature provides a visual indication of the device's operational status and battery level. It flashes periodically when the device is on.
Figure 5.3: The FIBERLERT-125 being used to test a fiber optic port within a network rack. The device's red indicator light is illuminated, signifying an active fiber connection.
Figure 5.4: A technician using the FIBERLERT-125 to check fiber connections within a fiber storage center. The device is positioned near a fiber optic connector, with its indicator light showing activity.
6. Maintenance
6.1 Cleaning
To ensure accurate readings and prolong the life of your device, keep the detection tip clean. Use a soft, lint-free cloth lightly dampened with isopropyl alcohol to wipe the exterior of the device. Do not use abrasive cleaners or immerse the device in liquids.
6.2 Battery Replacement
When the LightBeat indicator shows a low battery status, replace the AAA batteries as described in Section 4.1. Always use fresh alkaline batteries for optimal performance.
6.3 Storage
Store the FIBERLERT-125 in a cool, dry place away from direct sunlight and extreme temperatures. If storing for extended periods, remove the batteries to prevent leakage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Dead or incorrectly installed batteries. | Replace batteries with new AAA alkaline batteries, ensuring correct polarity. |
| No light/tone when testing a known active fiber. |
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| Inconsistent readings. |
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8. Specifications
| Feature | Detail |
|---|---|
| Model Number | FIBERLERT-125 |
| Detection Wavelength Range | 850 nm to 1625 nm (near infrared) |
| Fiber Compatibility | Single-mode, Multimode UPC and APC patch cords and ports |
| Detection Method | Non-contact |
| Power Source | 2 x AAA batteries (included) |
| Auto Power Off | After five minutes of inactivity |
| Product Dimensions | 6.6 x 0.6 x 1 inches |
| Item Weight | 0.22 ounces |
| Manufacturer | Fluke Corporation |
9. Warranty and Support
9.1 Warranty Information
The Fluke Networks FIBERLERT-125 comes with a Two-Year Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. For specific terms and conditions, please refer to the warranty card included with your product or visit the official Fluke Networks website.
9.2 Customer Support
For technical assistance, troubleshooting, or warranty claims, please contact Fluke Networks customer support. You can find contact information and additional resources on the official Fluke Networks website: www.flukenetworks.com.
