Parts 1 through 3 were all about stopping interference, from shielded enclosures through to ferrites on cables. Now let’s reverse the question: how do you actually see the interference, to confirm your...
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Broadband
How Ferrite Beads and Cores Suppress EMI and Reduce Noise on Cables
In Part 2 we saw how twisting a wire pair cancels interference at the source. But some noise still rides along a finished cable as common-mode current. Suppressing it is the job of a ferrite: a small magnetic...
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An Introduction to RF Shielding : What It Is & How It Works
Radiofrequency (RF) shielding is a conductive barrier that keeps the electric and magnetic fields of a circuit confined to where they belong. Left uncontrolled, these fields degrade signals and create...
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Design for Testability (DFT): Techniques and Applications
When a product fails in the field, the root cause is often difficult to pinpoint. A critical signal may be buried deep inside an application‑specific integrated circuit (ASIC). A fault may only appear under...
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Anatomy of a DOCSIS OFDM Channel Based on the OCD Message
Key Takeaways: ► An OCD Message equates to a Channel Map. It defines how the OFDM channel is structured, which helping modems decode it the right way. ► Subcarriers have roles and are grouped by function like...
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Everything You Need to Know About DOCSIS 4.0
Do you know your FDD from your FDX? Key Takeaways: What You’ll Learn About DOCSIS 4.0 ► DOCSIS 4.0 uses OFDM/OFDMA for better data efficiency. ► It s upports higher modulation (up to 4k-QAM) for faster speeds.
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DOCSIS 4.0: Swimming Upstream
Improving the DOCSIS protocol based on user-demand. Back in the day, content couldn’t be downloaded fast enough. There were movies, pictures, music…it was all take, take, take. These days, the clear divide...
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Cable and Mobile: Closely Connected
How do 5G and DOCSIS work together in Industry 4.0? Connectivity is defined as the ability to connect and communicate with another computer or computer system. With minicomputers and processors being embedded...
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How DOCSIS Connects All the Dots
As expected, the Internet of Things (IoT) continues to explode. It’s the backbone of progress, bringing countless advantages to the home, workplace, factory, doctor’s office and more and more and more. With...
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Ensuring DOCSIS 3.1 Network Health: The Benefits of Protocol Analysis
As many organizations begin designing, evaluating or deploying DOCSIS 3.1 equipment, they also have to consider the tools they will need to ensure effective integration and interoperation of that equipment, as...
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