该装置能够在较大的背景噪音下俘获小信号。最初这种转换器是为罗曼(Raman)光谱学试验和其它有关激光测量研制的。它能够在保持较宽的动态范围、低噪音和最大信号完整性的同时,自动地校正背景噪音和非随机背景信号。然而,该转换器并不局限于罗曼光谱学试验,它还能捕捉住随较大的交流或直流电流背景下出现的几乎是任何类型的小信号。 The device can capture small signals with large background noise. The first such converters were developed for Raman spectroscopy and other laser measurements. It automatically corrects background noise and non-random background signals while maintaining wide dynamic range, low noise, and maximum signal integrity. However, the converter is not limited to the Roman spectroscopy test, it captures almost any type of small signal appearing in the context of larger AC or DC currents.