Patent ID: 8374811
Filing Date: 2013-02-12
Classification: G01R

Abstract:
1. A waveform display apparatus, comprising: an interface, operable by a user, for setting time interval of interest and for setting trigger criteria; an input terminal for receiving a signal under test; an analog-to-digital converter coupled to the input terminal, the analog-to-digital converter receiving the signal under test and producing digital data from the signal under test; an acquisition memory for storing the digital data of the signal under test as a contiguous data record having a time duration longer than the time interval of interest; a trigger unit for detecting a plurality of trigger events in the signal under test based on the trigger criteria to produce a plurality of respective trigger event information items within the data record; a trigger list memory for storing the plurality of trigger event information items as a trigger list, based on the trigger criteria; a control unit for locating the digital data in the acquisition memory based on the trigger event information items in the trigger list; and a display device for displaying a plurality of waveforms associated with the signal under test; each waveform corresponding to a respective one of the trigger event information items and within the time interval of interest, the time interval of interest being a subset of the contiguous data record.