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核仪器所接收和处理的信号来自于辐射探测器,这种信号的形状以及在时间上和幅度上的随机分布等,对核仪器的响应有直接的影响。为了使对核仪器的测试更逼真,就需要模拟真实的信号形状和分布。直接取源于白噪声的随机脉冲产生器具有幅度均齐的缺点,仍然不能满足电路对信号某些响应的测试要求。为此,初步研制了一台信号源,它可以提供:(1).信号幅度分别独立可调的双脉冲序列,波形有矩形和拖尾两种:
The signals received and processed by nuclear instrumentation come from radiation detectors. The shape of such signals and their random distribution in time and amplitude have a direct impact on the response of nuclear instrumentation. In order to make the testing of nuclear instruments more realistic, it is necessary to simulate the real signal shape and distribution. Directly derived from the white noise random pulse generator has the same range of shortcomings, still can not meet the signal of the circuit to respond to some of the test requirements. To this end, a signal source has been initially developed which can provide: (1) double pulse sequence with independently adjustable signal amplitude, rectangular and trailing waveforms: