LC fiber optic testers are specialized tools designed to measure loss, detect faults, and verify the performance of LC fiber connections in both singlemode and multimode networks.

Overview of LC Fiber Testers

LC fiber testers are used to inspect, measure, and troubleshoot LC fiber optic links. They typically include:

• Visual Fault Locators (VFLs): Use a 650nm red laser to pinpoint breaks, cracks, or defects in the fiber, visible as a bright glow at the fault location (OptoSpan FIBER-TEST-LC supports up to 3 km) .
• Power Meters and Light Sources: Measure optical loss and verify signal strength across LC connections.
• Multi-function Testers: Combine VFL, power meter, and sometimes OTDR functions for comprehensive testing .

Testing LC to LC Fiber Links

For accurate LC fiber testing, follow these steps (using devices like the SimpliFiber Pro):

1. Stabilize the Source: Power on the fiber source and allow it to stabilize for at least 5 minutes.
2. Clean and Inspect: Ensure all LC connectors and test reference cords are clean.
3. Set Reference: Replace the SC adapter with an LC adapter, connect a known good reference cord, and set the reference on the meter.
4. Connect Fiber Link: Remove the reference cord from the input port, connect the LC fiber link to be tested, and measure loss at both wavelengths automatically.
5. Save Results: Record the test results for documentation and verification . This method is often referred to as the “1 jumper method”, following TIA/EIA standards (Method B for multimode, Method A.1 for singlemode) .

Key Features to Consider

• Connector Compatibility: Ensure the tester supports LC connectors; many testers also support SC, FC, ST, and E-2000 adapters .
• Modes: Singlemode and multimode testing capabilities.
• Laser Safety: Most VFLs use Class 2B lasers; handle with care.
• Portability: Handheld testers are ideal for field use .

Practical Tips

• Always clean LC connectors before testing to avoid inaccurate readings.
• Use stabilized light sources to ensure consistent measurements.
• For long fiber runs, consider testers with pulse mode to detect intermittent faults.
• Document all test results for network maintenance and troubleshooting. LC fiber testers are essential for network installation, maintenance, and troubleshooting, providing reliable measurements and fault detection for high-performance fiber optic networks .