- Single Acquisition Capture and Search
- Multi-Acquisition Scan for Unusual Events
- Finds Problems that Triggers Won't Find
- Fast Processing Aids Analysis
- Advanced Analysis Adds to Understanding
- ScanHisto
- ScanOverlay
Both Searches and "Scans"
A new tool available on most Teledyne LeCroy oscilloscopes, WaveScan provides the ability to locate unusual events in a single capture (i.e., capture and search). It also "scans" for an event in many acquisitions over a long period of time. Select from more than 20 search modes (frequency, rise time, runt, duty cycle, etc.), apply a search condition and begin scanning. It's that simple.
Finds Problems That Triggers Won't Find
The best trigger won't find all unusual events—a more powerful capability may be needed. Since the scanning "modes" are not simply copies of the hardware triggers, the utility and capability is much higher. For instance, there is no "frequency" trigger in any oscilloscope, yet WaveScan allows "frequency" to be quickly "scanned" for. This allows the user to accumulate a data set of unusual events that are separated by hours or days, enabling faster debugging.
Fast Processing Aids Analysis
When used in multiple acquisitions, WaveScan builds on the traditional Teledyne LeCroy strength of fast processing of data. A Teledyne LeCroy X-Stream oscilloscope will quickly scan millions of events, looking for unusual occurrences, and do it much faster and more efficiently than other oscilloscopes can.
Advanced Analysis Adds to Understanding
The ScanHisto and ScanOverlay capabilities are available on most Teledyne LeCroy scopes. Found events can be overlaid in a ScanOverlay view to provide a quick and simple comparison of events. In addition, measurementbased scanning modes (like the frequency example given above), permit ScanHistos to show the statistical distribution of the found events. These analysis tools simplify understanding and enable faster debug.
General | Available on most oscilloscopes |
Modes | Edge, Non-Monotonic, Runt,Measurement (15 available) |
MeasurementModes | DTime@Level (time between 2 edges), Duty Cycle, Fall Time (90–10%), Fall Time (80–20%), Fall Time(User Select), Frequency, Period, Rise Time (10–90%), Rise Time (20–80%), Rise Time (User Select),Time@Level (time from Trigger to Edge), Width Positive, Width Negative, X@max, X@min. (WaveExpert alsoincludes TimeIntervalError@Level) Additional parameters may be available if other software options arepurchased for the oscilloscope. |
Source | Any channel, math, or memory trace |
Filter Method | None, Greater Than, Less Than, Within Limit ±Delta (value or %), Outside Limit ±Delta (value or %), Definable # of Rare Events. |
Filter Setup | Setup directly, Set Value ±nSigma,or select ScanHisto bin to define filter. |
Event "Found" Marker | Red box around the event area |
Trigger Actionson Feature "Found" | None, Audible Beep, Stop Acquisition, Save Waveform(s), Pulse AUX Output, Print (Save) Screen Image, Save toLabNotebook™ |
Searching | For a single acquisition (STOP trigger), pick a Mode, Source, and Filter. WaveScan searches through a singleacquisition, identifies events found with a red box, and creates a user-scalable zoom trace to look at event(s) in more detail. |
Scanning | Create a hardware trigger condition, then pick a Mode, Source, and Filter. WaveScan scans through each acquisition, identifies events found with a red box, and creates auser-scalable zoom trace to look at event(s) in more detail. User can set WaveScan to perform an action when a event is found, such as STOP the trigger, or save the results. Thus, a software "scan" can be used to qualifya hardware trigger event. |
Table | Optionally displayed(user-selectable). Displays a list of all found events that meet the setupcondition. Touch a listed event and automatically center the zoom on thatevent. |
AnalysisScanHisto(gram) | Optionally displayed(user-selectable). Displays an accumulative histogram (1000 events standard,up to 2 billion with other, optional packages) showing distribution of allfound events. |
ScanOverlay | Optionally displayed(user-selectable). Displays an accumulative overlay with adjustablepersistence of all events found in the most recent acquisition. Overlay maybe zoomed and positioned, as desired. |