LabVIEW is an awesome product created and maintained by National Instruments. It consists of systems engineering relating to test, measurement and control of instrumentation, devices and machinery, and it is currently used worldwide in numerous applications. Rather than endless lines of textual coding, LabVIEW has a simple graphic interface where devices such as an oscilloscope […]
Measuring signals on transmission lines
Reflections typically arise when a beam of light strikes a polished flat reflective body whose surface is perpendicular to the beam of light. Then the transmitted light minus loss in two-way transit appears at the source. This is similar but not exactly equivalent to an electrical signal traveling through a conductive medium that has an […]
A look at the instrumentation for trapping atoms, ions, and particles
Enormous gains have been made in quantum research by confining single atoms or small numbers of atoms and elementary particles in electromagnetic traps. For experimental purposes, what is wanted is the ability to confine a single particle in a small container for a long time. The object would be to repeat measurements introducing alternate variables […]
Measuring phase noise and jitter
Generally, whether one speaks of phase noise or jitter depends upon whether they happen to be a radio frequency or digital systems engineer. Both phenomena are random fluctuations of a time-domain waveform in an oscillator or in a clock. Phase noise is best represented in the frequency domain. It is usually defined as the spectral […]
Understanding magnetic resonance technology
Various electronics circuits and human-made or natural phenomena and atomic configurations spontaneously exhibit or can be configured to exhibit resonance. What this means is that when they oscillate, the associated waveform is at a stable fundamental frequency. Nuclear magnetic resonance (NMR) takes place when the isotope of an atom is located within a magnetic field. […]
Understanding fiber optic measurements
Optical fiber is a highly efficient transmission medium for light. Slightly thicker than a human hair, optical fiber is manufactured by drawing out transparent plastic or glass into long strands. It is flexible, capable of bending around obstacles and being fished through small wall cavities. Light travels along straight paths unless influenced by an outside […]
How To Measure Entropy
It was once widely taught that entropy is a measure of disorder. Educators increasingly feel that the concept of entropy as the disorder can be confusing. So increasingly the “disorder” explanation is giving way to the idea that entropy describes energy spreading out or dispersing. The usual ways energy spreads out is when the system […]
Measuring earth’s magnetic field
Earth’s magnetic field is far stronger than that of Venus or Mars, and this single fact explains why life on earth is abundant while its nearest neighboring planets do not at present support life. Earth’s magnetic field extends from its outer core (where swirling molten iron produces a dynamo effect) up through the magnetosphere, extending […]
Understanding bandwidth concepts
Bandwidth has an array of meanings, depending on the context. Often, but not always, the term is applicable to a situation where one frequency is superimposed on, mixed with, or modulates a different frequency. A simple and fundamental example is amplitude modulation and its close relatives, frequency and phase modulation. When speaking of a broadcast […]
How to use oscilloscopes with integrated test instrumentation
Many manufacturers have in recent years have introduced oscilloscopes with integrated test instrumentation. This means that the smaller and lighter oscilloscope enclosure actually houses about five additional test instruments. An example is the Tektronix MDO3000 Series which includes a digital voltmeter, arbitrary function generator, spectrum analyzer, logic analyzer, and protocol analyzer. All this integrated test […]
- « Previous Page
- 1
- 2
- 3
- 4
- 5
- 6
- …
- 36
- Next Page »
@TestandMeasure
EE World Network