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Acquisition system for a long record length digital storage oscilloscope

  • US 20030208330A1
  • Filed: 05/02/2002
  • Published: 11/06/2003
  • Est. Priority Date: 05/02/2002
  • Status: Active Grant
First Claim
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1. Acquisition System for a long record length digital oscilloscope, comprising:

  • an input terminal for receiving a signal under test;

    an analog-to-digital converter having an input coupled to said input terminal for receiving said signal under test, and producing digital samples of said signal under test at an output;

    a trigger circuit having an input coupled to said input terminal for receiving said signal under test, and producing a trigger signal at an output in response to detection of a predetermined trigger event in said signal under test;

    an acquisition memory for storing said digital samples of said signal under test in a data record; and

    processor circuitry for examining said stored digital samples in a post acquisition mode of operation and producing an event detect signal in response to detection of a predetermined event in said stored digital samples, and causing a predetermined amount of said stored digital samples to be read from said acquisition memory and sent to a signal processing portion of said oscilloscope for processing and display;

    said predetermined amount of said stored digital samples being less than the whole data record and being related in time to said event detect signal.

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