Specifications at a glance for the 70950A * Wavelength Range: 600 nm - 1700 nm * Resolution Accuracy: (> 0.5 nm, 1250 nm - 1600 nm): ± 20% Agilent Option List for Optical Spectrum Analyzers * 001: Current Source * 002: White Light Source * 003: Swept PDL kit for model 70951B ONLY * 122: Improved dynamic range and noise maker accuracy for Model 70952B ONLY Applications The 70950A or the 71450A Optical Spectrum Analyzer is a diffraction-grating based optical spectrum analyzer that provides spectral measurements of optical power versus wavelength and advanced functions for measuring and characterizing optical components, amplifiers, LEDs, DBF lasers, and Fabry-Perot lasers.Additional Information Interface connector is sold separately. Please make your choice amoung the below list:* 81000FI: FC/PC, N-Keying (2.20mm nominal) * 81000NI: FC/APC, R-keying (2.03mm nominal) * 81000KI: SC/PC * 81000VI: ST/PC