Fiber-optic Loop Back Cable with Minimum Reflectance of 20dB Key Specifications/Special Features: Provides a looped (circular) signal from source device to hardware for testing purposes Enabling a signal check for both transmitting and receiving functions Multimode connectors available in SC, LC and MTRJ types Durability: more than 500 cycles: ≤0.2dB change Insertion loss: 0.2dB Typical: less than 0.75dB maximum Cable: multimode in 62.5/125 or 50/125μm Minimum reflectance: 20dB