详细资料： ● The Advantest Q8347 is an optical spectrum analyzer employing a Michelson interferometer ● High resolution wavelength measurement of 0.01nm at 1.5μm band and 0.001nm at 0.5μm band ● Coherent length can be measured The coherent length, which cannot be measured by dispersion spectroscopy using a grading based spectrum analyzer, can be measured by Q8347 using the Michelson interference method. Therefore, the Q8347 can easily determine the noise suppression performance of the CD/VD laser diode due to the reflected light. The analysis range is as wide as +/-165mm. ● High-speed measurement As the analyzer employs Fourier spectroscopy using Michelson interferometer, high speed measurement is realized. ● +/-0.01nm wavelength measurement accuracy As a He-Ne laser is used as internal reference light source, a high wavelength accuracy of 0.01nm is realized. Wavelength calibration is not required. ● Easy operation Various aspects have been taken into consideration to make measurement easier. The panel key arrangement, Soft-key menus and basic key function can be specified in the first hierarchy. The Q8347 has a built-in level meter which greatly facilitates adjustment of the measurement light coupling. ● Zoom function The measurement data can be analyzed again and displayed with the zoom function. Data can be displayed from wide to narrow span without repeating measurement. ● Various processing functions They include four types of FWHM measurement function, an automatic peak search function, four types of cursor indication modes, a peak value sting function and 16 data memory areas. ● Built-in high-speed printer Measurement data can be easily output using a high-speed thermal printer having a printing speed of less than 8 seconds. Specification Wavelength 350nm - 1750 nm Resolution 0.001nm / 500nm (high resolution mode) 0.003nm / 850nm (high resolution mode) 0.01nm / 1550nm (high resolution mode) 0.05 nm / 850nm (norma