Omega Products OMSP-4224 User Manual
High-Precision
USB-Powered Oscilloscopes
OMSP-4000 Series
U 20 MHz to 100 MHz Bandwidths
U 32 MS Buffer Size
U 80 to 250 MS/s Real-Time Sampling
U Advanced Digital Triggers
U Built-In Function Generator/AWG
(Model OMSP-4227)
U USB-Connected and Powered
The new OMSP-4000 Series offers
the highest performance available
from any USB-powered oscilloscope
on the market today. The OMSP4000 Series has the power to
perform in many applications, such
as design, research, test, education,
service and repair. These USBpowered oscilloscopes are also
small, light and portable. They easily
slip into a laptop bag making them
ideal for the engineer on the move.
There is no need for an external
power supply, making them ideal for
field use.
High Bandwidth, High
Sampling Rate
Models OMSP-4224 and OMSP4227 have bandwiths of 20 MHz
and 100 MHz respectively with
sampling rate up to 250 MS/s. ETS
mode boosts the maximum effective
sampling rate further to 10 GS/s,
allowing more detailed display of
repetitive signals.
Huge Buffer Memory
OMEGASCOPE
has a maximum zoom factor
of 100 million combined with
a choice of two zoom methods.
There’s a conventional set of zoom
controls, plus an overview window
that shows you the whole waveform
while you zoom and reposition the
display by simply dragging with the
mouse.
Another use for the huge memory
is our segmented memory. Each
captured waveform is stored in the
buffer so you can rewind and review
thousands of previous waveforms.
No longer will you see a glitch on
the screen only for it to vanish
before you stop the scope.
TM
software
Advanced Triggers
As well as the standard range of
triggers found on all oscilloscopes,
the OMSP-4000 Series offers a
class-leading set of advanced
triggers including pulse width,
windowed and dropout triggers to
help you capture the data you need.
Digital Triggering
OMSP-4224, shown
smaller than actual size.
and can also create a long trigger
“re-arm” delay. OMSP-4000 Series
oscilloscopes use full digital
triggering using the actual digitized
data. This reduces trigger errors and
allows our oscilloscopes to trigger
on the smallest signals, even at the
full bandwidth.
Trigger levels and hysteresis can
be set with great precision and
resolution. Digital triggering also
reduces re-arm delay and this
combined with the segmented
memory allows the triggering
and capture of events that
happen in rapid sequence. At
the fastest timebase you can use
rapid triggering to collect 10,000
waveforms in under 20 milliseconds.
Our mask limit testing function can
then scan through these waveforms
to highlight any failed waveforms for
viewing in the waveform buffer.
Custom Probe Settings
The OMSP-4000 Series offers
memory depths up to 32 million
samples. Other oscilloscopes have
high maximum sampling rates,
but without deep memory they
cannot sustain these rates on long
timebases. The OMSP-4227 can
sample at 100 MS/s at timebases all
the way down to 50 ns/div.
Managing all this data calls for
some powerful tools, so the
Most digital oscilloscopes sold
today still use an analog trigger
architecture based around
comparators. This can cause time
and amplitude errors that can not
always be calibrated out. The use
of comparators often limits the
trigger sensitivity at high bandwidths
The custom probes feature allows
you to correct for gain, attenuation,
offsets and nonlinearities in special
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probes, or to convert to different
units of measurement (such as
current, power or temperature). You
can save definitions to disk for later
use. Definitions for standard supplied
oscilloscope probes and current
clamps are included.
Arbitrary Waveform and
Function Generator
Measurements
You can add any combination of automatic measurements to the display,
chosen from a list of 26 scope and spectrum parameters. Every measurement includes statistics of minimum, maximum, average, standard deviation and sample size.
Model OMSP-4227 has a built-in
function generator (sine, square,
triangle, DC level). As well as basic
controls to set level, offset and
frequency, more advanced controls
allow you to sweep over a range
of frequencies. Combined with the
spectrum peak hold option this
makes a powerful tool for testing
amplifier and filter responses.
The OMSP-4227 also includes a
full arbitrary waveform generator.
Waveforms can be created or
edited using the built-in AWG editor,
imported from oscilloscope traces, or
loaded from a spreadsheet.
Spectrum Analyzer
With the click of a button, you
can display a spectrum plot of the
selected channels. The spectrum
analyzer allows signals up to 200
MHz to be viewed in the frequencydomain. A full range of settings
gives you control over the number
of spectrum bands, window types
and display modes: instantaneous,
average, or peak-hold. You can
display multiple spectrum views with
different channel selections and zoom
factors, and OMEGASCOPE
you to see these alongside timedomain waveforms of the same data.
A comprehensive set of automatic
frequency-domain measurements,
including THD, THD+N, SNR, SINAD
and intermodulation distortion, can be
added to the display.
TM
allows
Math Channels
The OMSP-4000 Series
oscilloscopes offer a full range of
math functions for processing and
combining channels. The functions
can also operate on reference
waveforms. Use the built-in list for
simple functions such as addition
and inversion, or open the equation
editor and create complex functions
involving trigonometry, exponentials,
logarithms, statistics, integrals
and derivatives.
Advanced Display Modes
See old and new data superimposed,
with new data in a brighter color or
shade. This makes it easy to see
glitches and dropouts and to estimate
their relative frequency. Choose
between analog persistence and
digital color, or create a custom
display mode. The design of the
OMEGASCOPE software ensures
that maximum display area is
available for waveform viewing.
Even with a laptop you have a much
bigger viewing area and higher
resolution than a typical benchtop
scope.
Serial Decoding
The OMSP-4000 Series with
its deep memory is ideal
for serial decoding as it can
capture thousands of frames of
uninterrupted data. Protocols
currently included are I²C, SPI,
RS232, UART and CAN bus. Expect
this list to grow with free software
updates. OMEGASCOPE displays
the decoded data in the format of
your choice: “in view”, “in window”,
or both at once. The “in view” format
shows the decoded data beneath
the waveform on a common time
axis, with error frames marked
in red. You can zoom in on these
frames to look for noise or distortion
on the waveform. “In window” format
shows a list of the decoded frames,
including the data and all flags and
identifiers. You can set up filtering
conditions to display only the frames
you are interested in, search for
frames with specified properties,
or define a start pattern that the
program will wait for before listing
the data. You can also create a
spreadsheet to fully decode the hex
data into plain text.
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