1 引言自一百多年前,由德国物理学家W.C Rongen发现的X射线,在医学的诊断与治疗中普遍应用已众所周知。同样,作为材料的无损探伤检测方法,X样的信号数据和预期的数据进行比较,最终决定测试是否通过。在这种源同步测试系统中,有几个重要的指标需要强调。首先需要注意的是连接被测器件时钟输出与测试系统之间的通路延迟。该通路必须精确校 1 Introduction X-rays, discovered by the German physicist W.C Rongen more than 100 years ago, are commonly used in medical diagnosis and treatment. Similarly, as a nondestructive testing method for materials, the X-like signal data is compared with the expected data to determine whether the test passes. In this source synchronous test system, there are several important indicators that need to be emphasized. The first thing to note is the delay in the path between the device’s clock output and the test system. The access must be accurate