| 摘要 |
PROBLEM TO BE SOLVED: To simply detect a predetermined fault by a digital oscilloscope for recording long data. SOLUTION: Analog-to-digital converters 531-534 each generates a digital sample of a signal to be tested. A trigger circuit 520 generates a trigger signal, and capturing memories 551-554 each stores the digital sample of the signal to be tested. Multiplexers 541-544 each controls the flow of the sample to the memory. Processing circuits 561-564 each tests the digital sample stored in a post capturing operation mode, and designates the range of a storing position of the memory including the data regarding a predetermined event. A system processor 670 reads the predetermined quantity of the stored digital sample from the memory in response to the event detection signal and the memory address signal, and transmits the sample for processing and displaying for the signal processing part of the oscilloscope. COPYRIGHT: (C)2004,JPO
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