Acquisition system for a multi-channel relatively long record length digital storage oscilloscope
US6748335B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 2002 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Aug 28, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3177
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A real time multi-channel digital storage oscilloscope acquires a relatively long data record for each channel in an acquisition memory and processes the data of the relatively long data record to search for predetermined events. Upon detection of such a predetermined event, circuitry generates an event detect signal, and data comprising an acquisition frame surrounding the event is applied to a waveform processing and display system. The relatively long data record can be replayed in order to perform additional searches throughout the data record using different search criteria, thereby permitting multiple waveforms to be displayed simultaneously, each being captured as a result of a different user-defined event. A screen display may be programmed to display a different kind of event such as Runt signal, Overshoot, or Pulsewidth Violation in each waveform, or to display multiple occurrences of the same kind of event such as Runt signal in each waveform. The multiple waveforms of the screen display may be derived from a single channel or from different channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.