... operation and high-precision measurement under laboratory. SAT-F5 Optical Multimeter is handheld and intelligent multi-function measurement instrument ... integrating with LD source and optical power range module, SAT-F5 could provide light source ... ±0.03dB/15min ; ±0.05dB/8h Wavelength of optical power meternm850,980,1300,1310,1490,1550,1625Measurement rangedBm-70 ...