Today, engineers and researchers
whose work involves MIMO, phased array and beam forming
often have a need to use
wide bandwidth multi-channel signal analysis platforms.
Oscilloscopes are a natural choice in such applications,
however, most oscilloscopes either can't analyze RF signals
or limited to analyzing on a single channel only.
Hello, I'm Koteshwara, and in this video
I will show you
how to use Tektronix 5 and 6 Series B Oscilloscopes
to perform RF spectral and modulation analysis
on multiple channels simultaneously,
making this possible in part
is Tektronix SignalVu-PC software, let's begin.
Let's consider a scenario involving a modern AESA Radar
or phase direct communication system.
Modern AESA radars can have multiple beams
tracking or focusing on multiple targets simultaneously.
The signal and its characteristics for each of these beams
can be different when operating in these complex,
multi-beam modes, each beam needs to be analyzed
to ensure the system performs as expected.
The analysis can range from basic spectrum to modulation
to advanced pulse analysis.
Using the Tektronix 6 Series B with SignalVu-PC,
let's launch multiple spectral displays
for each of two sources.
Each source can be assigned to any scope channel,
two channels are used in this example
but the same can be repeated up to eight channels
with this oscilloscope, the sources can also be IQ
or differential IQ.
If the signal are from two different sources
the span and the RBW need to be adjusted.
The multi-channel 6B, with SignalVu-PC can be configured
with independent span, RBW and center frequency
for each source,
that means the SignalVu-PC can be configured
for almost any scenario.
Similarly, other RF displays like amplitude versus time
and phase versus time can be launched for each source
to get more insights into the signals.
Markers can be used to correlate the results
between any two channels.
Moving the marker or setting the marker on one channel
will move the marker or all other channels,
this will help to determine useful parameters
like amplitude and phase differences
between channels, easily.
If signals are from two different beams,
the signals may be independent
and have different modulation and spectral properties,
so the signals also need to be analyzed
at different time slots on each channel.
The time overview in SignalVu-PC helps us control
the analysis time.
The analysis time of different channels can be adjusted
to analyze important segments of the acquisition
on each channel independently.
SignalVu-PC is tightly integrated
with Tektronix 5 and 6 Series Oscilloscopes.
Almost all the control and analysis feature of the scope
can be configured directly in SignalVu itself,
for example, the scope's trigger can be configured directly
in SignalVu, which eliminates the need to make changes
in multiple user interfaces.
Pulse analysis can be performed
on multiple channels simultaneously.
The advanced pulse analysis package
provides 31 individual measurements
to automatically characterize long pulse strains.
Cumulative statistics provides timestamps
for min-max values as well as peak-to-peak average
and standard deviation or multiple acquisitions,
further extending the analysis.
The fully configurable RF controls,
like span, center frequency and RBW on all channels,
combined with independent analysis time on each channel
and markers which can be correlated across channels,
make these combination
of Tektronix 5 or 6 B Series Oscilloscope
together with SignalVu-PC a fully configurable means
of analyzing any scenario, whether it is multi beam
as we discussed here, multi-channel or multi DUT.