Against the limitation of tearing nodes that must be accessible in analog circuit diagnosis based on tearing technology, the method of virtual accessible testing nodes was presented.
针对网络撕裂方法诊断模拟电路故障过程中撕裂节点必须是可及节点的限制，提出了虚拟可及测试节点的方法。
Testing system, in which DSP is the part of core and CPLD is as peripheral circuit, controls operation parts, and test or incept the digital signal, analog signals and switch signals from exterior.
测试系统中采用了以数字信号处理器为核心，以复杂可编程逻辑器件为外围电路，来控制执行部件和测试与接收由外部返回的数字信号、模拟信号和开关信号。
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