Exfo FTB-5240S-P Optical Spectrum Analyzer Module

The EXFO FTB-5240S-P Optical Spectrum Analyzer module delivers high-precision spectral analysis across the C- and L-bands for DWDM, CWDM, and advanced optical network deployments. This plug-in module integrates into FTB-2, FTB-2 Pro, FTB-400, FTB-500, and FTB-5240 platforms, enabling rapid commissioning, maintenance, and fault isolation in modern optical systems. The instrument provides simultaneous measurements of optical power, wavelength, and in-band OSNR with exceptional accuracy and dynamic range. ## Technical Specifications Spectral Performance • Wavelength Range: 1250 nm to 1650 nm • Wavelength Uncertainty: ±0.05 nm typical; ±0.01 nm after user calibration (within 10 nm of calibration point) • Resolution Bandwidth: 0.065 nm (FWHM) • Wavelength Linearity: ±0.01 nm typical • Wavelength Repeatability: ±0.003 nm (2σ) • Optical Rejection Ratio: Up to 40 dBc at 0.2 nm (25 GHz) and 50 dBc at 0.4 nm (50 GHz); enhanced rejection with FTB-5240B option Power & Dynamic Range • Input Power Range: −70 dBm to +23 dBm per channel • Maximum Total Safe Power: +29 dBm • Dynamic Range: 93 dB typical (exceeds 90 dB per scan) • Absolute Power Uncertainty: ±0.5 dB • Power Repeatability: ±0.05 dB (2σ) OSNR Measurement • In-band OSNR analysis via PROS-OSNR method • Accurate measurement in systems with fluctuating noise floors • Optimized for 40 Gbit/s and ROADM architectures ## Key Features • Dedicated measurement modes: DWDM, CWDM, EDFA, signal drift, spectral transmittance, DFB laser analysis • Internal wavelength reference with optional user calibration • Dual connector support: EI (UPC) and EA (APC) EXFO universal interfaces • Operating temperature range: 0 °C to 40 °C • Compact form factor: 96 mm H × 51 mm W × 260 mm D (1.5 kg) ## Typical Applications • DWDM system characterization and monitoring • CWDM channel verification • EDFA gain and noise figure analysis • Wavelength drift detection • Component spectral transmittance measurement • DFB laser spectral purity assessment