This instrument enables high speed measurement of the optical properties of LD and LED light sources, and other devices. To improve ease of use, it includes mouse-based user operation and a brand-new zoom function. Thank you for purchasing the AQ6374 Optical Spectrum Analyzer. This manual describes. A beam splitter or beamsplitter is an optical device that splits a beam of light into a transmitted and a reflected beam. It is a crucial part of many optical experimental and measurement systems, such as interferometers, also finding widespread application in fibre optic telecommunications. It can split a light signal into different colors or wavelengths. Most spectrum analyzers automate certain power versus frequency type measurements, like AM modulation depth or. There are two modes for Spectrum Analysis function. Spectrum Monitor: requires S96310xB X Signal Source Analyzer advanced feature for E505xA. The VNA ports 1 and 2 do not support this feature. Chapter 2 defines many of the specified performance parameters of diffraction-g rating-based optical spectrum analyzers and discusses the relative merits of the single monochromator, double monochromator, and double-pass-monochromator- ased optical spectrum.