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W
R
X
S
AVE
UNNER
I
Search Modes
Search modes
are used to locate anomalies during acquisition.
•
Edge - for detecting the occurrence of edges; selectable slope and level
•
Non-monotonic - for detecting threshold re-crosses; selectable slope, hysteresis, and level
•
Runt - for detecting pulses that fail to cross a threshold; selectable polarity and thresholds
•
Measurement - for filtering and performing parameter measurements
Parameter Measurements
Besides parameter measurements made during acquisition, post-acquisition measurements can also be made.
The number of parameters available depen
only on the events defined by your filter (search criteria). A Filter Wizard is provided to quickly establish statistical
criteria such as ±1, 3, or 5 sigma.
Sampling Mode
Whenever WaveScan is enabled, the instrument reverts to Real-time sampling mode.
Source View
The top trace on the screen is the so
and highlights those that fit you
that fall outside a
time window:
In this acquisition, WaveScan has located eleven edges that fit the search criteria (filter) of greater than 1.2 ns
with a delta of 50 ps. Each of the found edges is highlighted with a red rectangle, and indexed to a table entry at
left. Rise time values are also included in the table.
Level Markers
Markers are provided on the source trace to show measurement criteria such as level and thresholds. In the
example above, the level markers indicate 10% and 90% for the standard Rise Time parameter measurement.
Lev
el markers are displayed only while the oscilloscope is in WaveScan mode. Once the WaveScan Enable
che
ckbox is unchecked, the
148
ERIES
ds
on the options loaded on your instrument. Measurements are made
urce (
channel, math, memo
r search criteria. For example, in this figure we are searching for slow rising edges
level markers disappear.
ry) tra
ce. This trace shows all captured edges
WRXi-OM-E Rev C
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