You need to test, we're here to help.

You need to test, we're here to help.

08 December 2016

Back to Basics: Fundamentals of AC Line Power (Part II)

AC line voltage is a single-phase vector that rotates at a given frequency
Figure 1: AC line voltage is a single-phase
vector that rotates at a given frequency
Having reviewed a broad definition of power, how it is generated and distributed, and how motors consume almost half of all generated power, we will now turn to a more detailed discussion of just what it is that we call "power." When we discuss "power," we're typically referring to what comes out of a wall socket: AC line, or sinusoidal, power.

18 November 2016

Back to Basics: The Fundamentals of Power


45% of worldwide power consumption fuels motors
Figure 1: 45% of worldwide power
consumption fuels motors
Ask any number of engineers to define "power" and you'll get any number of answers, and none of them would necessarily be wrong. Sometimes it's just a matter of perspective.

30 September 2016

Dynamic Range, Signal Integrity, and ESD Pulses

Use your oscilloscope's full vertical range to take full advantage of the ADC's resolution
Figure 1: Use your oscilloscope's full vertical range to
take full advantage of the ADC's resolution
Having considered the impact of sampling rate on ESD pulse measurements, let's now turn our attention to dynamic range and signal integrity. No matter what oscilloscope you use, it's important to make the most of the instrument's full vertical range to achieve maximum accuracy.

28 September 2016

How Does Sampling Rate Affect ESD Pulse Measurements?

Characterization of an ESD pulse's rise time depends largely on the oscilloscope's sampling rate
Figure 1: Characterization of an ESD pulse's rise time
depends largely on the oscilloscope's sampling rate
In continuing our look at ESD/EMC pulse measurements, it would be useful to consider how sampling rate figures into the equation. What sort of sampling rate makes sense to use for capturing an ESD pulse? The answer to that question depends primarily on your pulse's rise time.

13 September 2016

Why IEEE's Pulse Definitions and ESD Pulses Don't Mix

The IEEE's pulse definitions, which don't fit the bill for measuring ESD pulses
Figure 1: The IEEE's pulse definitions, which don't fit
the bill for measuring ESD pulses
The IEEE's pulse definitions, found in the organization's Std 181-2011 that covers transitions, pulses, and related waveforms, set the bar for how pulse measurements are determined. These definitions, which are in the DNA of all oscilloscopes, are just the thing for measuring repetitive pulses such as clock signals but not so much for ESD/EMC measurement requirements. In this post, we'll discuss why that is and what you should do differently for measuring ESD pulses.

30 August 2016

Making EMC/ESD Pulse Measurements

Four quadrants of EMC/ESD testing
Figure 1: Oscilloscopes are used for
testing in the green-shaded boxes
There are many circumstances in which electromagnetic compatibility (EMC) and electrostatic discharge (ESD) testing are a fact of life. Many countries have adopted IEC international standards that dictate certain levels of immunity, as have the automotive, medical, military, and aerospace industries. In this post, we'll begin looking at how oscilloscopes figure into tests for both radiated and conducted EMC/ESD immunity.

15 July 2016

Are You Ready for Bluetooth 5?

Bluetooth logo
The Bluetooth Special Interest Group, which is the body that oversees the protocol's specification, doesn't stand still but rather continues to develop and improve Bluetooth technology. With an eye toward building an accessible and interoperable Internet of Things (IoT), the next version of the Bluetooth specification—Bluetooth 5—is slated to appear by early in 2017 and as soon as this fall.