Fiber Optic Patch Cord - ST-SM RoHS Compliant High return loss,Low insertion loss ... Good repeatability&changeability Fiber Optic Patch Cord - ST-SM Description Optic Fiber Patch Cord Item NO. Test Item ... end / No scar, No spot 3 Insertion loss dB SM ≤ 0.2, 4 Return loss dB APC ≥ 60 ... < 0.1 , Return loss change< 5,No flab,No distortion 11 Addition dB 2.5Kg , 200times , 10times/minutes , ± 80 ...