WaveScan
Advanced Search and Analysis
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- 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
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Both Searches and “Scans”
A new tool available on most 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
LeCroy strength of fast processing of
data. A 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
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) |
Measurement Modes |
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 also
includes TimeIntervalError@Level) Additional parameters may be available if other software options are
purchased 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 Actions on Feature “Found” |
None, Audible Beep, Stop Acquisition, Save Waveform(s), Pulse AUX Output, Print (Save) Screen Image, Save to LabNotebook™ |
Searching |
For a single acquisition (STOP trigger), pick a Mode, Source, and Filter. WaveScan searches through a single acquisition, 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 a user-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 qualify a hardware trigger event. |
Table |
Optionally displayed (user-selectable). Displays a list of all found events that meet the setup condition. Touch a listed event and automatically center the zoom on that event. |
Analysis ScanHisto(gram) |
Optionally displayed (user-selectable). Displays an accumulative histogram (1000 events standard, up to 2 billion with other, optional packages) showing distribution of all found events. |
ScanOverlay |
Optionally displayed (user-selectable). Displays an accumulative overlay with adjustable persistence of all events found in the most recent acquisition. Overlay may be zoomed and positioned, as desired. |
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