RF frequency trigger on wireless burst signal

Spectrum View: A New Way of Analyzing Signals Across Multiple Domains

Published: 23rd December 2021

Analyzing Signals Across Multiple Domains

There is increasing interference in the RF domain as we work to make IoT devices more powerful, consume less energy and have longer battery lives but still broadcast high-quality RF communication. From smart watches to heart rate sensors, the devices being designed today are getting smaller and smaller, which makes signal integrity more important than ever before.

Figure 1: RF frequency trigger on wireless burst signal

Testing and debugging these embedded systems often involves looking for clues that can be hard to discover if you’re only looking at a single domain at a time. Mixed domain analysis, or the ability to look at time and frequency domains simultaneously, is especially useful for answering questions such as:

  • What’s going on with my power rail voltage when I’m transmitting wireless and RF data?
  • Where are the emissions coming from when I access memory?
  • How long does it take for my PLL to stabilize after power-on?

While correlating signals across multiple domains has traditionally been a painful, technically challenging process, Spectrum View, which is available on our 4 Series, 5 Series and 6 Series mixed signal oscilloscopes, offers a solution.

Why You Might Want to Look at Signals in the RF Domain

Any and every signal can be built from a composite of sinusoids. This means that when we decompose the time domain signals with a fast Fourier transform (FFT), we can see whether any additional insights are hiding in plain sight. This could take the form of clock signals leaking onto serial communication signals and wreaking havoc in how an airbag sensor communicates with the airbag. It could involve power supply switching noise conducting into critical analog signal paths or even wireless transceiver signals radiating out of your meticulously designed electromagnetic interference shielding.

Figure 2: Gated frequency measurement on RF pulses

How Spectrum View Helps

Spectrum View makes measurements easier and more accurate, providing you with greater insights. Independent controls enable you to optimize both the time domain view and frequency domain view. An incredible feature called spectrum time allows you to observe how the spectrum is changing over time and how your time domain correlates at that exact moment. In addition, three RF vs time views are available to allow you to plot frequency, magnitude, and phase deviations as a function of time.

Available standard on the 4 Series, 5 Series and 6 Series mixed signal oscilloscopes as well as our low-profile digitizers, Spectrum View works all the way down at DC up to 10 GHz. You can set the span as low as 18.6 Hz and as high as 2 GHz. You can even look at eight channels simultaneously. And with a resolution bandwidth as low as 93 µHz, it enables you to resolve very small differences in between signals.

MCS Test are an approved UK partner for Tektronix
Content Source: Spectrum View A New Way of Analyzing Signals Across Multiple Domains | Tektronix

category.title

Tektronix MDO32 100 MHz - 1 GHz Mixed Domain Oscilloscope

Frequency Range: 100 MHz - 1 GHz
2 Analog Channels, 16 Digital (OPT)

With the largest display in class, improved low-level signal measurement accuracy and industry-leading probe performance, the MDO32 sets a new standard for bench oscilloscopes. Whether you’re testing your baseband design for IoT or just for simple EMI sniffing, the MDO32 has a unique true hardware spectrum analyzer built right in with superior RF test performance and guaranteed RF specifications.

Find out more about Tektronix MDO32 100 MHz - 1 GHz Mixed Domain Oscilloscope
category.title

Tektronix MDO34 100 MHz - 1 GHz Mixed Domain Oscilloscope

Frequency Range: 100 MHz - 1 GHz
4 Analog Channels, 16 Digital Channels (OPT)

With the largest display in class, improved low-level signal measurement accuracy and industry-leading probe performance, the MDO34 sets a new standard for bench oscilloscopes. Whether you’re testing your baseband design for IoT or just for simple EMI sniffing, the MDO34 has a unique true hardware spectrum analyzer built right in with superior RF test performance and guaranteed RF specifications.

Find out more about Tektronix MDO34 100 MHz - 1 GHz Mixed Domain Oscilloscope
category.title

Tektronix MSO46 200 MHz to 1.5 GHz GHz Mixed Signal Oscilloscope

Frequency Range: 200 MHz to 1.5 GHz
6 Analog Channels, 48 Digital Channels (OPT)

With the largest and highest resolution display in its class, the 4 Series MSO sets a new expectation of how a scope should work.

Find out more about Tektronix MSO46 200 MHz to 1.5 GHz GHz Mixed Signal Oscilloscope
category.title

Tektronix MSO44 200 MHz to 1.5 GHz GHz Mixed Signal Oscilloscope

Frequency Range: 200 MHz to 1.5 GHz
4 Analog Channels, 32 Digital Channels (OPT)

With the largest and highest resolution display in its class, the 4 Series MSO sets a new expectation of how a scope should work.

Find out more about Tektronix MSO44 200 MHz to 1.5 GHz GHz Mixed Signal Oscilloscope

You Might also like

MSO24 Auto

Bringing Portability and Power to the Automotive Industry with the 2 Series MSO

The modern automotive industry moves quickly, and automotive engineers and technicians need the right tools at their fingertips to identify issues quickly and easily. There are many diagnostic tools that analyze the performance of different vehicle systems on any given day, but these instruments almost always include an oscilloscope, which displays different voltages and helps automotive technicians troubleshoot various electrical components under the hood.

Read more
MS068 B Embedded

Advanced Oscilloscope Analysis – 4 Unique Capabilities with the 6 Series B MSO

With the lowest input noise and up to 10 GHz analog bandwidth, the 6 Series B MSO provides the best signal fidelity for analysing and debugging today's embedded systems with GHz clock and bus speeds.

Read more
Abstract Power Analysers

Forming the Best Solution for Battery Formation and Aging

Current markets are leading to high demand for battery cells. One way for manufacturers to increase throughput is to reduce the time spent making each battery. The formation and aging stage is the most time consuming part of the cell manufacturing process. Ensuring that the right equipment is used for the job can help with some of the challenges facing formation and aging.

Read more

Sign up for the MCS Newsletter

You will receive all the latest test & measurement news and rental offers.