AQ-1425 Yokogawa Optical Spectrum Analyzer

The Yokogawa / Ando AQ-1425 Optical Spectrum Analyzer is a general-purpose wavelength characteristics-measuring instrument that measures the spectrum of a light source such as a laser diode (LD) and light-emitting diode (LED), and the loss-wavelength or transmission characteristics of an optical fiber cable and filter. This apparatus has a wide wavelength range of 400 to 1600 nm, high light sensitivity, high wavelength accuracy of ±1 nm, and high sweep rate, and is therefore ideal for a wide variety of applications.

In addition to center wavelength, sweep width, resolution, and reference level setting and other basic setting functions, this apparatus incorporates various functions such as averaging, data memory, loss-wavelength and transmission loss characteristics calculation capabilities, marker, peak search, half-value width search, and labeling.

This apparatus has two distinguished features.

One is upgraded man-machine interface capabilities. As an example, HELP function gives the operator as needed the operating procedure to be followed and a detailed description of errors. Although the data memory can be used for loss-wavelength and transmission loss measurements, the apparatus is provided with a mode designed specifically for these measurements. This special mode permits even an unskilled operator to operate the apparatus under the guidance of CRT.

The other feature is automatic function setup. After this apparatus is connected by optical fiber to the light source, it automatically selects the optimum center wavelength, sweep width, and reference level, thus simplifying the operating procedure. Further, this apparatus can be used in conjunction with a video plotter for recording, and is provided as a standard with GP-IB interface that enables automatic measurements.