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Tektronix Experts's blog

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An engineer testing power integrity with a Tektronix oscilloscope
5 Key Problems to Solve When Testing Power and Signal Integrity Friday, April 9, 2021
Testing power and signal integrity using an oscilloscope-based solution has some inherent challenges that need to be considered and resolved for optimum performance. We’ll address five of those here, but first let’s take step back and define what we mean by power and signal integrity. Signal integrity (SI) analysis concentrates on the performance of the transmitter, reference clock, channel, and …
TBS2000B digital oscilloscope
How Does an Oscilloscope Measure Frequency? Tuesday, April 6, 2021
Oscilloscopes measure the voltage of an electrical signal, which is then graphically represented by waveforms. However, an oscilloscope can be used to take measurements for a number of different applications – one of which is frequency. But how does an oscilloscope measure frequency, exactly? Well, there’s a straightforward answer, and then there’s a slightly more complicated answer. On most, if …
TBS1000C bench oscilloscope
How to Use an Oscilloscope to Measure Current Tuesday, April 6, 2021
Most oscilloscopes only directly measure voltage, not current, however there are a couple of ways it is possible to measure current using a scope: Measure the voltage dropped across a shunt resistor – some power supply designs may have shunt resistors built into the design for feedback. One technique is to measure the differential voltage drop across such a resistor. These are generally low …
TBS1000C bench oscilloscope
What is an oscilloscope? Tuesday, April 6, 2021
An oscilloscope is an instrument that graphically displays electrical signals and shows how those signals change over time. It measures these signals by connecting with a sensor, which is a device that creates an electrical signal in response to physical stimuli like sound, light and heat. For instance, a microphone is a sensor that converts sound into an electrical signal. Here we’ll cover …
Oscilloscope probe connected to a DUT
What is an Oscilloscope Probe? Monday, April 5, 2021
An oscilloscope probe is a device that makes a physical and electrical connection between a test point or signal source and an oscilloscope. Depending on your measurement needs, this connection can be made with something as simple as a length of wire or with something as sophisticated as an active differential probe. Essentially, a probe is some sort of device or network that connects the signal …
bench power supply
Bench Power Supply Basics Thursday, April 1, 2021
A DC power supply is a standard piece of test and measurement equipment used by electrical engineers and circuit designers to power and test their circuit system designs. But what exactly does it do and how can you find the right bench power supply for your application? We’ll cover all that and more. Why do you need a bench power supply? Bench power supply types How to choose the …
The Keithley 4200A-SCS Parameter Analyzer from Tektronix
4 Ways Keithley’s 4200A-SCS Parameter Analyzer Simplifies DC I-V Characterization of BioFETs Monday, March 29, 2021
Extensive research and development have been invested in semiconductor-based biosensors because of their low cost, rapid response, and accurate detection. In particular, field effect transistor-based biosensors, or bioFETs, are used in a wide variety of applications such as in biological research, point of care diagnostics, environmental applications, and even food safety. A bioFET converts a …
3 Series MDO mixed domain oscilloscope
What does an oscilloscope measure? Thursday, March 25, 2021
Most consumer products include electronic circuits or components, and an oscilloscope is used throughout the product design process to test those components. But what is an oscilloscope? And what does an oscilloscope measure? An oscilloscope is an instrument that graphically displays electrical signals and shows how those signals change over time. Engineers use oscilloscopes to measure electrical …
TBS1000C bench oscilloscope
How to choose an oscilloscope Wednesday, March 24, 2021
Oscilloscope bandwidth System bandwidth determines an oscilloscope’s ability to measure a signal. Specifically it determines the maximum frequency that the instrument can accurately measure. Bandwidth is also a key determining factor in price. Determine what you need – use the ‘five times rule’ For example, a 100 MHz oscilloscope is usually guaranteed to have less than 30% attenuation at 100 MHz …
A Keithley Source Measure Unit Instrument (SMU) from Tektronix
The Reviews are In: Here’s What Engineers are Saying About the 2450 SMU Tuesday, March 16, 2021
Keithley partners with element14 to supply engineers with instruments to test and review, and we recently provided three Keithley 2450 SourceMeter® Source Measure Unit (SMU) instruments to engineers. Below are excerpts from their RoadTest reviews, which can be read in full on the element14 website.      RoadTest #1   During his RoadTest element14 user lui_gough, alias of Dr. Gough Lui, ran a …