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Christopher Loberg's blog


Tektronix power rail measurement with Passive Probes (below) and Power Rail Probes (above)
Achieving Better Energy Efficiency in AI Data Centers With Power Integrity Testing Tuesday, June 18, 2024
Introduction Deployment of AI-based technology is happening in the Data Center. The processor-intensive servers are driving up energy demands. The table below illustrates the magnitude of the impact. The International Energy Agency (IEA) predicts that data centers will account for up to seven percent of global electricity consumption by 2030; a number equivalent to the entire country of India’s …
Engineer using a Tektronix Isolated probe with an oscilloscope
SiC MOSFETs Represent Opportunities and Measurement Challenges for EV Designers Tuesday, November 15, 2022
Innovation in semiconductor technology is enabling more efficient and dense power conversion in hybrid and electric vehicles. Wide bandgap silicon carbide (SiC) technology enables faster switching and lower switching loss in high voltage EV systems.  However, the same fast switching and high voltage capabilities that make SiC MOSFETs so promising, also create measurement challenges. Probing the …
Conventional oscilloscope probes make signals appear noisy on SiC gate drives
Measuring Silicon Carbide (SiC) MOSFET Signals Effectively Monday, December 6, 2021
Silicon Carbide (SiC) MOSFETs are increasingly being used in industries ranging from electric vehicles and solar power, to backup power systems. This is thanks to their ability to withstand high temperatures, offer faster switching, deliver higher efficiency especially at higher voltages, and high current capacity. However, there are some challenges in validating designs using SiC MOSFET’s. The …
6 Series B mixed signal oscilloscope displaying jitter
Understanding How To Analyze Jitter Wednesday, November 17, 2021
Steve Sandler, President of Picotest, as well as Maria Agoston, Cameron Lowe, Tony Ambrose, all of Tektronix, also contributed to this blog. Why You Should Care About Jitter Jitter is a common problem. A quantified misplacement in time of the signal relative to the expected time position, jitter is ultimately a degradation of the key definition of performance of a serial link, which is the bit …
Using Tektronix Real-Time Spectrum Analyzers for Automatic Drone Detection Friday, September 20, 2019
As hobbyist and commercial drones become ever cheaper and more ubiquitous, security and government officials around the world are stepping up efforts to detect the presence of drones or unmanned aerial vehicles (UAVs) in places where they don’t belong. Germany recently announced plans to install drone detection systems at its major airports to avoid runway and airport shutdowns when drones enter …
When I ask my quantum research customers what part of their project they’re most excited about, almost invariably they tell me it’s some unique element of their quantum chip. But when the experiment is over, and the findings are published, was the chip the most challenging building block of their computer? Not always. In fact, after having gone through it all, many teams find that integration …
Understanding serial trigger and decode software for DPO70000SX scopes Wednesday, August 2, 2017
The DPO7000SX ATI Performance Oscilloscope is an amazing instrument, with the ability to capture up to 70 GHz signals with the lowest noise and highest fidelity of any oscilloscope on the market today. But what takes it from being a mere product to a complete test and measurement solution are the more than 50 software option packages that automate compliance testing for important standards or give …
Keeping ahead of link training debug challenges Saturday, January 14, 2017
The speeds of Ethernet communication links used in the datacenter continue to increase and next generation network adapters based on 100GbE and 400GbE Ethernet (802.3xx) standards are already in active product development and testing. Although these links employ fiber, signals must still travel over copper backplanes and interconnects.Achieving these speeds over copper requires the use of …
The growth in datacom is impacting IEEE & OIF test strategies Monday, July 18, 2016
  By Chris Loberg, Sr. Manager, Performance Instruments Keeping pace with the fast evolution of datacom networks requires a test strategy with room to grow. Testing for standards like LR8 requires instruments with high bandwidth and, more importantly, high dynamic range. The need for superior dynamic range comes into play because of the smaller amplitude sizes and tight margins of PAM4 modulated …