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ABernard
The vast majority of electronic tests involve using a digital multimeter (DMM) at one time or another. There are a variety of ways to reduce DMM measurement times to improve overall test throughput. Of course, test time improvements sometimes require compromises in other areas, but knowing the tradeoffs involved in throughput improvements and… (Show more)
ABernard
True RMS responding DMMs measure the "heating" potential of an applied voltage. Power dissipated in a resistor is proportional to the square of an applied voltage, independent of the wave shape of the signal. Today’s general purpose DMMs can accurately measures true RMS voltage or current, as long as the wave shape contains negligible energy… (Show more)
ABernard
Power line communication or power line carrier (PLC) is getting a lot more attention these days since it is used in many of the new green energy electronics such as smart grid devices, solar inverters, and home automation. PLC is communication technique that uses the power wiring in buildings or grid power transmission lines as its communication… (Show more)
ABernard
In this Part 2 of the blog, I will explain to you another way of creating an arb and transferring into an AWG using BenchVue software. If you have not used the BenchVue software before, let me tell you, it’s even easier than the two examples shared in Part 1 of this blog.   First, let me give you an introduction of what BenchVue software is all… (Show more)
ABernard
In this blog post we will look at how easy it is to create arbitrary waveforms on a modern function / arbitrary waveform generator (AWG). I am always running into engineers, young and old alike, that try at all costs to avoid creating an arbitrary waveform (arb) for a test. When they hear the word arb they picture the tedious process of learning… (Show more)
ABernard
Using an electrocardiogram (ECG sometimes called an EKG) is an invaluable way to identify various physical ailments. Today there is a wide array of cardiac equipment that displays and interprets ECG signal patterns. Medical equipment designers need a flexible way to seamlessly generate accurate ECG signal patterns to verify and test their designs.… (Show more)
ABernard
Single-ended signals are referenced to a common level, such as ground, that they can share with other signals, so a single-ended signal requires only a single path or wire. Differential signals are made up of a pair of paths that are both dedicated to a single signal at any given time. One path is used at a higher potential than the other.… (Show more)
ABernard
The digital multimeter or DMM offers two methods for measuring resistance: 2–wire and 4–wire ohms. For both methods, the test current flows from the input HI terminal and then through the resistor being measured. For 2–wire ohms, the voltage drop across the resistor being measured is sensed internal to the multimeter. Therefore, test lead… (Show more)
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