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TEST & MEASUREMENT TIPS

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MAIN CONTENT


 * APEC 2024: TEST EQUIPMENT
   
   


 * OFC 2024: TEST EQUIPMENT
   
   


 * SPECTRUM MEASUREMENTS SHED LIGHT ON SIGN MALFUNCTIONS
   
   


 * WHAT IS INTERMODULATION, AND IS IT GOOD OR BAD? PART 2
   
   


 * WHAT IS INTERMODULATION, AND IS IT GOOD OR BAD? PART 1
   
   


 * APEC 2024: TEST EQUIPMENT
   
   


 * OFC 2024: TEST EQUIPMENT
   
   

 1. 1
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 3. 3
 4. 4
 5. 5

FROM THE EDITORS

 * 
   Aimee Kalnoskas
   Measure RF power from 25 MHz to 1 GHz with your laptop
 * 
   Martin Rowe
   OFC 2024: Test equipment
 * 
   Rick Nelson
   What is intermodulation, and is it good or bad? Part 2
 * 
   Emma Lutjen
   Moku product line enhanced with added instrument
 * 
   Kenneth Wyatt
   Spectrum measurements shed light on sign malfunctions

< >


TEST AND MEASUREMENT VIDEO

APEC 2024: TEST EQUIPMENT

Test equipment is everywhere. Every trade show has it regardless of the focus.
Power is no exception. At APEC 2024, EE World visited several booths displaying
test equipment: meters, oscilloscopes, source-measure units (SMUs), bench power
supplies, … [Read More...] about APEC 2024: Test equipment

More Videos


TODAY ON TEST & MEASUREMENT TIPS

 * OFC 2024: Test equipment
 * RF generators produce test signals to 40 GHz
 * Spectrum measurements shed light on sign malfunctions
 * What is intermodulation, and is it good or bad? Part 2
 * Measure RF power from 25 MHz to 1 GHz with your laptop
 * Calibrator automates oscilloscope calibrations on four channels


FAQS

WHAT IS INTERMODULATION, AND IS IT GOOD OR BAD? PART 2

A mixer can upconvert and downconvert a modulated signal with no loss of
baseband information. Part 1 of this series described intermodulation resulting
from the combining of two or more sinusoidal signals through a nonlinear device
such as the mixer in Figure 1. The mixer's output is the product … [Read
More...] about What is intermodulation, and is it good or bad? Part 2

WHAT IS INTERMODULATION, AND IS IT GOOD OR BAD? PART 1

Sinusoidal inputs applied to a nonlinear system produce an output containing
different frequencies, and the results can be good, bad, or ugly. According to
the dictionary definition, intermodulation is “the production in an electrical
device of currents having frequencies equal to the sums and … [Read More...]
about What is intermodulation, and is it good or bad? Part 1

WHY DOES THE FOURIER TRANSFORM PROVIDE APPARENTLY INACCURATE RESULTS, AND WHAT
CAN I DO ABOUT IT? PART 4

The FFT can measure phase angle, but what appears to be a meaningful result
might just be the arctangent of a ratio of rounding errors. Throughout this
series, we reviewed the fast Fourier transform (FFT) as implemented in Microsoft
Excel and investigated windowing functions. In this final part, … [Read More...]
about Why does the Fourier transform provide apparently inaccurate results, and
what can I do about it? Part 4

HOW TO SEPARATE DIFFERENTIAL AND COMMON-MODE HARMONIC NOISE CURRENTS

Differential-mode and common-mode currents can cause your product to produce
radiated and conducted emissions. These three techniques can help you measure
them. If you've dealt with EMC issues for any length of time, you've probably
run into the term "common mode currents," which often lead to … [Read More...]
about How to separate differential and common-mode harmonic noise currents

WHY DOES THE FOURIER TRANSFORM PROVIDE APPARENTLY INACCURATE RESULTS, AND WHAT
CAN I DO ABOUT IT? PART 3

Windowing functions account for mismatches between an input signal and FFT
sample size. We concluded part 2 of this series with a look at fast Fourier
transforms (FFTs) of 39.1-Hz and 38.12-Hz cosine waves, with our sample size N =
512 and our sample interval Δt = 1 ms (Figure … [Read More...] about Why does
the Fourier transform provide apparently inaccurate results, and what can I do
about it? part 3

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WHAT IS THE IMPORTANCE OF RESOLUTION IN AN OSCILLOSCOPE?

May 5, 2021 By Sponsored Content Leave a Comment

When looking at the oscilloscope feature of a multi-instrument device or when
comparing two benchtop oscilloscopes, the first specifications that we look at
are the bandwidth and sample rate. While these are incredibly important
specs, often most design work is done well within the limits of most
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