Supporting 20km transmission over single-mode fiber at 1310nm wavelength, this 100/155M SFP module delivers 19 dB link budget with speeds from 100-155Mbps. Telcordia compliant with LC/UPC connectors, optimized for carrier-grade OC-3 and STM-1 deployments. Fiber Optic Measurement Units: "dB" and "dBm" Whenever tests are performed on fiber optic networks, the results are displayed on a power meter, OLTS or OTDR readout in units of “dB. ” Optical loss is measured in “dB” which is a relative measurement, while absolute optical power is measured in “dBm,”. At present, our products meet the industry standards and mainstream quality certification, such as ISO 9001, CE, RoHS, FCC, etc. As a kind of transmission technology with huge capacity and long-distance coverage is now widely used in the backbone, convergence and access layer of metropolitan area. Our OC-3/STM-1 SFP 20km transceiver enables reliable SONET/SDH connectivity for telecom networks. The transmitter input and receiver output impedance is 100 Ohms differential. Data lines are internally AC coupled. The module provides differential. Maximum distance (km) = Available budget (dB) ÷ Cable attenuation (dB/km) − [Fixed losses / Cable attenuation] For an OS2 cable with an attenuation of 0,35 dB/km at 1310 nm, 4 connectors (4 × 0,5 dB = 2 dB) and 2 splices (2 × 0,1 dB = 0,2 dB): max distance ≈ (14 − 2 − 0,2) / 0,35 ≈ 33 km. Four. The new Intellinet Network Solutions Small Form Factor Pluggable (SFP) Transceiver provides the best combination of performance and affordability.
