Wavelength range : 0.6 to 1.75 um
Level measuring range : -70 to +10 dBm (0.7 to 1 .6 um) -65 to  +10 dBm (0.6 to 1 .7 um) -5 5 to + I0 dBm (1.6 to 175um)
Measuring level accuracyz : ± 2 dB (at 0.85/1 3/1.55 um)
Linearty : ±0.5 dB/20 dB. ± i dB/60 dB
Polarmtion :  ±0.5 dB (at 1.3/1 .55 um)
Lwei scale : 0.2 to 10 dB/div and Linear