... field l Multi-wavelength precise measurement l Absolute power measurement dBm or xWl Relative power measurement dB l SC, FC, ST ... wavelength(nm)850nm, 980nm, 1300nm, 1310nm, 1550nm, 1490nmPower testing range (dBm)-50~+ 26 or -70 ~+10 Uncertainty±5%Resolution Linearity: 0 ...