This versatile light source ensures reliable testing of both multimode and single-mode fibers. Delivering stable output at 850/1300 nm for multimode and 1310/1550 nm for single mode, it features intelligent power management, multiple modulation options, and a clear color LCD, making field and lab work faster and more accurate.

Key Features

• Broad-Wavelength Support: 850/1300 nm for multimode, 1310/1550 nm for single-mode testing
• Stable Output: ±0.05 dB drift over 15 minutes; adjustable power from –5 to –12 dBm
• Four Modulation Modes: Continuous wave, 270 Hz, 330 Hz, 1 kHz, and 2 kHz for diverse test requirements
• Auto Functions: Automatic wavelength detection and configurable auto-off timer (default 10 min)
• Power Efficiency: Intelligent backlight control and ≥25 hr battery life on three AA batteries
• Universal Connectivity: Includes SC, ST, FC, and FC–LC (PC/UPC) adapters for full connector compatibility
• Field-Ready Design: 2.4″ color LCD, sturdy kickstand, and rugged carry case

What’s Included

• Fiber Optic Light Source
• SC/UPC & ST/UPC Adapters (2 each)
• FC/UPC Adapters (2) & FC–LC/UPC Adapter (1)
• Cleaning Swabs (2)
• Instruction Manual
• Carrying Case
• (3) AA Batteries

Specifications

• Wavelengths: 850, 1300, 1310, 1550 nm (±5 nm)
• Spectral Width: ≤5 nm
• Output Power: –7 dBm typical; adjustable –5 to –12 dBm
• Stability: ≤0.05 dB (15 min)
• Modulation Frequencies: CW, 270 Hz, 330 Hz, 1 kHz, 2 kHz
• Display: 2.4″ TFT color LCD
• Battery Life: ≥25 hours (3× AA)
• Operating Temp.: –10 °C to +60 °C
• Storage Temp.: –25 °C to +70 °C
• Dimensions: 7.44″ × 3.31″ × 1.85″ (189 × 84 × 47 mm)
• Weight: 0.64 lb (290 g)

Equip your testing kit with this all-in-one light source for precise, dependable fiber-optic diagnostics.

Documentation

• FLS-55 Data Sheet
• FLS-55 Instructions