User Manual

Teledyne LeCroy

WaveScan in WaveSurfer 3000 Oscilloscopes

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WaveScan in WaveSurfer 3000

Oscilloscopes

TECHNICAL BRIEF

Introduction

Teledyne LeCroy’s WaveSurfer 3000 oscilloscopes offer a large

complement of powerful hardware triggers, but even the most advanced

hardware triggers carry limitations in that they can find an event

predetermined by the user. Thus, the WaveSurfer 3000 oscilloscopes are

augmented with WaveScan Search and Find technology. WaveScan is an

advanced search and analysis tool that provides the ability to quickly

locate and characterize unusual events. WaveScan can detect anomalies

within a single capture and can also operate in continuous scanning

mode, constantly monitoring incoming waveforms. There are many search

criteria to choose from, including non-monotonic edge detection, runt

mode, and a large number of parametric measurement criteria, including

rise time, fall time, frequency, pulse width, duty cycle, and many others.

Getting Started with WaveScan

The WaveScan feature can be accessed from the front panel or through

the Analysis pull-down menu. Using Teledyne LeCroy’s WaveSource 100

evaluation source to input a signal with a slow rise time, the screen will

look similar to Figure 1.

Figure 1: The initial setup screen for WaveScan is the starting point for deep

signal exploration

June 30, 2014

Summary

The WaveScan tool built into

the WaveSurfer 3000

oscilloscopes enables the

instruments use more than 20

different search criteria to find

anomalies in a captured

waveform, or to scan live

acquisitions for anywhere from

a second to a day.

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WaveScan in WaveSurfer 3000 Oscilloscopes TECHNICAL BRIEF June 30, 2014 Introduction Summary Teledyne LeCroy’s WaveSurfer 3000 oscilloscopes offer a large complement of powerful hardware triggers, but even the most advanced hardware triggers carry limitations in that they can find an event predetermined by the user. Thus, the WaveSurfer 3000 oscilloscopes are augmented with WaveScan Search and Find technology.
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In Figure 1, WaveScan is still in its default state, which is edge mode. Edge settings are for a positive slope where the edge threshold is 50% of the signal amplitude. Note that all such edges in the input signal are highlighted in red. The first edge in the signal trace is brighter, indicating highlighting, and that highlighted section appears in the WaveScan zoom view below.
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WaveScan can also direct the WaveSurfer 3000 to take specific actions upon finding the sought-after event, including stopping acquisitions, saving waveform(s), printing the screen, beeping, or saving to a LabNotebook entry. Conclusion WaveScan adds considerable functionality to the WaveSurfer 3000 oscilloscopes beyond what is offered by any hardware trigger. While a hardware trigger only finds one event per acquisition, WaveScan identifies all events which meet the criteria.