... Range 30/28dB 2)Measure attenuation ,loss,reflection Optical Time Domain Reflectometer (OTDR) SX3028 This OTDR are the preferred choice ... Width5ns,10ns,12ns,30ns,100ns,275ns,300ns,1µs,2.5µs,10µs,20µs@othersAveraging Time15s, 30s, 1min, 2min, 3minDistance ... 3×2.7 inch)Notes:(1) Specifications describe the instrument's warranted performance, measured with typical PC-type connectors. Uncertainties ...