With its two new optical shutter systems, i.e. SR470 and SR474, Stanford Research Systems (SRS) certainly has an edge when it comes to specifically designed vibration-free shutter systems. These two models are built around a unique shutter head and supported by one of the two available models. .与它的两个新的光学快系统即sr470和sr474斯坦福研究系统SRS定有优势时专的振动由快系统。两个模型是建立在一个独特的快头和一个可用的模型支持。。On one hand, SR470 provides timing signals to a single shutter head and on the other, the multi-channel SR474 drives up to four shutter heads and is controlled by external timing signals.一方提供定时信号sr470单一快头另多sr474动多四头是由快外定时信号控制。