GSE平行光管

GSE(Ground Support Equipment)为FTS系统的地面支持设备，主要包括平行光管和气体处理系统两部分，是系统级测设时不可缺少的设备，可用于对信噪比、调制效率、光谱稳定度、光谱分辨率、光谱不确定度等指标进行测量。
ABB公司曾经为多个项目提供过GSE定制设备。

平行光管主要用于下列测试:

l Signal to noise ratio tests

l Spectral tests performed with the Gas Handling System

n Measurement of the instrumental line shape (ILS) function

n Measurement of the spectral resolution

n Measurement of the spectral uncertainty

n Measurement of the spectral stability

l Field of view mapping

l Non-linearity characterization

l Modulation efficiency measurements.

组成部分：

l A collimating telescope

l An interface for the gas cell of the Gas Handling System

l An aperture wheel with openings of various sizes

l Filter holders on the aperture wheel

l A chopper wheel and its controller

l Two micrometric translation stages to move the aperture wheel vertically and horizontally across the beam

l A housing that can be purged with dry nitrogen

技术指标：