Datasheet
Search (serial triggering)
Limit/Mask testing
Serial triggering is very useful for isolating the event of interest, but once
you’ve captured it and need to analyze the surrounding data, what do you
do? In the past, users had to manually scroll through the waveform
counting and converting bits and looking for what caused the event. You
can have the oscilloscope automatically search through the acquired data
for user-defined criteria including serial packet content. Each occurrence is
highlighted by a search mark. Rapid navigation between marks is as simple
as pressing the Previous (←) and Next (→) buttons on the front panel.
A common task during the development process is characterizing the
behavior of certain signals in a system. One method, called limit testing, is
to compare a tested signal to a known good or "golden" version of the
same signal with user-defined vertical and horizontal tolerances. Another
common method, called mask testing, is to compare a tested signal to a
mask, looking for where a signal under test violates the mask. The MSO/
DPO4000B Series offers both limit and mask testing capability useful for
long-term signal monitoring, characterizing signals during design, or testing
on a production line. A robust set of telecommunications and computer
standards are provided to test for compliance to a standard. Additionally,
custom masks can be created and used for characterizing signals. Tailor a
test to your specific requirements by defining test duration in number of
waveforms or time, a violation threshold that must be met before
considering a test a failure, counting hits along with statistical information,
and actions upon violations, test failure, and test complete. Whether
specifying a mask from a known good signal or from a custom or standard
mask, conducting pass/fail tests in search of waveform anomalies such as
glitches has never been easier.
Power analysis (optional)
Ever increasing consumer demand for longer battery-life devices and for
green solutions that consume less power require power-supply designers to
characterize and minimize switching losses to improve efficiency. In
addition, the supply’s power levels, output purity, and harmonic feedback
into the power line must be characterized to comply with national and
regional power quality standards. Historically, making these and many
other power measurements on an oscilloscope has been a long, manual,
and tedious process. The optional power analysis tools greatly simplify
these tasks, enabling quick and accurate analysis of power quality,
switching loss, harmonics, safe operating area (SOA), modulation, ripple,
and slew rate (di/dt, dv/dt). Completely integrated into the oscilloscope, the
power analysis tools provide automated, repeatable power measurements
with a touch of a button; no external PC or complex software setup is
required.
Limit Test showing a mask created from a golden waveform and compared against a live
signal. Results showing statistical information about the test are displayed.
Safe operating area measurement. Automated power measurements enable quick and
accurate analysis of common power parameters.
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