Quick links Return Merchandize Authorization (RMA) Register product Spec sheet User manual Knowledge base Helpful resources Filter Cancel Language English (2) 中文 (2) Español (1) Deutsch (1) Clear all Spec sheet FTBx-5245/5255 optical spectrum analyzers Download User manual FTB-5235 / FTBx-5245/5255 Optical Spectrum Analyser Download Knowledge base 2024-11-06 Recommended Calibration Interval Calibration Most EXFO Test & Measurement products 2024-11-06 Knowledge base Find the answers you're looking for. See all documents Let’s keep in touch! Get the latest news on network testing, monitoring and analytics. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Thank you!