一台XG—200型医疗诊断用X线机,透视时工作正常,摄影时,0.24秒以前各档曝光时间都正常,自0.3秒档之后,普遍在各标定档上均延长2秒以上,且档位越高,延长的时间亦越久(普通秒表测量)。 就说明书所给的资料分析,我们判断为电子限时器0.3秒档处充电电阻变值增大,放致其后各档位时间常数均延长(见附图)。待御下限时器组件、打开外壳时,首先见 A XG-200 medical diagnostic X-ray machine, when working in perspective, photography, 0.24 seconds before the exposure time of all files are normal, since 0.3 seconds after the file, the standard file are generally extended for more than 2 seconds, and The higher the gear, the longer the time (ordinary stopwatch measurement). Analysis of the data given in the instructions, we determine the electronic limit timer 0.3 seconds stalls charging resistance variable value increases, causing the subsequent stalls time constant are extended (see photo). To be Royal lower limiter components, open the shell, see first