The EXFO FLS-210B / FOT-90 Kit combines a quad laser light source with an optical power meter to deliver complete fiber optic characterization for field deployment. The FLS-210B generates four calibrated wavelengths across single-mode and multimode bands, while the FOT-90 meter captures absolute power and loss measurements from high-output fibers down to noise floor. Together they form an integrated test platform compatible with the FasTesT automated documentation system.
## Technical Specifications
**FLS-210B Light Source**
• Quad laser source with wavelengths: 1310 nm, 1550 nm (single-mode); 850 nm, 1300 nm (multimode)
• Output power: variable over 10 dB range in 0.1 dB increments; specific levels at -2 dBm, -3 dBm, or -7 dBm depending on source
• Stability: ±0.005 dB (15 min), ±0.05 dB (8 hr) at constant temperature
• Spectral width: 5 nm or 10 nm (rms)
• Modulation: 270 Hz, 1 kHz, 2 kHz (50% duty cycle); FLS-210A supports 2 kHz tone
• Connector: FC
• Power supply: AC adapter/charger, NiCd rechargeable batteries, or 9 V alkaline
• Display: large backlit LCD
• Laser classification: 21 CFR Class I per 21 CFR 1040.10 and 1040.11
**FOT-90 Power Meter**
• Measurement range: -43 dBm to +35 dBm (Ultra-High Power™ capable)
• Accuracy: ±0.12 dB (-30 dBm to +20 dBm), ±0.3 dB (+28 dBm to +35 dBm) at 1550 nm
• Supports absolute power and loss testing
## Key Features
• FasTesT-compatible automatic mode for streamlined data logging
• Automatic wavelength recognition and calibration storage via one-button operation
• Ultra-High Power measurement capability for high-output fiber testing
• Durable polycarbonate field case with auto-off and low-battery indicator
## Typical Applications
• Single-mode and multimode fiber plant characterization
• Loss budget validation across C-band and O-band wavelengths
• High-power launch and acceptance testing
• Field installation and commissioning documentation
## Compatibility & Integration
The kit operates as a paired system with automatic wavelength handshake through FasTesT. Both instruments feature FC connectors for standard patch-cord integration.
