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All Things Measured

- September 26, 2013

Chris Grachanen covers the technologies and techniques used to make quality measurements. His focus is high frequency applications, calibration methodologies, and industry trends that reflect today's measurement challenges in research projects and the developing, debugging and maintaining of commercial products.

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Measuring a signal's flight time

  • 04.25.2014

High-frequency signals take time to travel through circuit-board traces. You need to know how much time.Read More...

Measure Q-Factor With a VNA

  • 02.21.2014

Even if your vector-network analyzer doesn’t have Smith Chart capability or Q-Factor measurements, you're not out of luck. Free software is available that can make the calculations from S-parameter measurements.Read More...

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The telegrapher’s galvanometer

  • 01.21.2014

While we now have better equipment for measuring current and characterizing transmission lines, it all started with a galvanometer.Read More...

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Measurement Sensors: For a Calculator?

  • 12.06.2013

In a followup to "Not Your father's Calculator," Christopher L. Grachanen looks at the measurement capabilities in the TI-Nspire calculator.Read More...

Not Your Father's Calculator

  • 11.22.2013

Besides solving algebra problems, today's calculators can become data-collection devices with attached sensors.Read More...

Most versatile test equipment

  • 10.21.2013

They don't make them like they used to. Some tools do it all, so you keep them around as long as possible and then look for used ones.Read More...

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Sniffing for problems

  • 10.14.2013

Near-field probes can help you find where EMI is leaking from your connections.Read More...

Be confident in VNA measurements

  • 09.26.2013

Proper calibration is needed to get measurements in connections at high frequencies.Read More...

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