This waveform generator is small enough to fit on any bench and packs many useful features so long as you operate it from the physical or virtual front panel. The software, however, needs work. Walking the exhibit floor at IMS 2024, I passed … [Read More...] about Tryout: Uni-T UTG962E Function/Arbitrary Waveform Generator
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FROM THE EDITORS
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Aimee Kalnoskas
USB oscilloscope adds 16 logic inputs -
Martin Rowe
Tryout: Uni-T UTG962E Function/Arbitrary Waveform Generator -
Rick Nelson
How to interpret a QAM display: part 3 -
Emma Lutjen
EE Training Day Q&A discussion: network & fiber optics measurement solutions -
Kenneth Wyatt
New products at the EMC & Compliance International Conference
FAQs
How to interpret a QAM display: part 3
Error vector magnitude characterizes actual QAM signals’ deviations from their ideal locations due to nonlinearity and phase noise. In part 1 of this series, we discussed quadrature amplitude modulation (QAM), which results from summing orthogonal amplitude-modulated cosine and sine waves of the … [Read More...] about How to interpret a QAM display: part 3
How to interpret a QAM display: part 2
Sixteen unique 16-QAM symbols can each convey a unique 4-bit sequence. In part 1 of this series, we discussed quadrature amplitude modulation (QAM), which results from summing amplitude-modulated cosine and sine waves of the same frequency. We also looked at the constellation diagram, which a … [Read More...] about How to interpret a QAM display: part 2
How to interpret a QAM display: part 1
A constellation diagram plots a quadrature amplitude modulation (QAM) signal’s in-phase and quadrature components. The EE World article "Should I use a spectrum, signal, or vector network analyzer?" in part 3 mentioned that vector-signal analyzers (VSAs) can display modulation-domain and … [Read More...] about How to interpret a QAM display: part 1
Verify, test, and troubleshoot 5G Wi-Fi FWA gateways
By Xiang Li, Keysight Technologies Follow these three steps to ensure your fixed-wireless access designs will be compatible with the Wi-Fi fronthaul and 5G backhaul. Many areas lack the wired infrastructure to bring residential broadband access. Making those connections has become costly and … [Read More...] about Verify, test, and troubleshoot 5G Wi-Fi FWA gateways
Should I use a spectrum analyzer, signal analyzer, or vector network analyzer? Part 4
A vector network analyzer can fully characterize components by deriving their scattering parameters. In earlier parts of this series, we looked at analog spectrum analyzers (part 1 and part 2) and vector signal analyzers (part 3), both of which monitor unknown signals, whether emanating from … [Read More...] about Should I use a spectrum analyzer, signal analyzer, or vector network analyzer? Part 4
Should I use a spectrum, signal, or vector network analyzer? part 3
In part 2 of this series, we looked at a swept-tuned spectrum analyzer and how it could sweep a frequency span of interest from 1 MHz to 1.1 MHz with a sweep time of 50 msec. As Figure 1 shows, the analyzer readily identifies a signal at 1.03 MHz but misses the intermittent signals shown in … [Read More...] about Should I use a spectrum, signal, or vector network analyzer? part 3
Should I use a spectrum, signal, or vector network analyzer? part 2
An analog spectrum analyzer’s sweep time can hide intermittent unwanted signals. In part 1 of this series, we examined a simplified block diagram of a traditional analog spectrum analyzer, which includes an RF frontend, mixer, voltage-controlled oscillator (VCO), intermediate-frequency (IF) … [Read More...] about Should I use a spectrum, signal, or vector network analyzer? part 2
Should I use a spectrum, signal, or vector network analyzer? part 1
Signal analysis is invaluable for applications ranging from amplifier characterization to signal intelligence. In a recent series, we discussed specs such as 1-dB compression and third-order intercept points. At the end, I pointed to some application notes that explain how to use specific … [Read More...] about Should I use a spectrum, signal, or vector network analyzer? part 1
New products at the EMC & Compliance International Conference
At the annual UK event, Tekbox, Y.I.C. Technologies, and Harogic Technologies were among the companies exhibiting new EMC measurement equipment. The EMC & Compliance International conference and training was held again in Newbury, UK, from May 22 to 23 this year (Reference 1). This was my … [Read More...] about New products at the EMC & Compliance International Conference
How can I quantify a device’s nonlinearity? part 3
A higher third-order intercept point results in lower intermodulation products at any given input power level below compression. In part 1 of this series, we discussed the 1-dB compression point as a figure of merit for device linearity. In part 2, we examined a circuit that adds two fundamental … [Read More...] about How can I quantify a device’s nonlinearity? part 3
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What is the importance of resolution in an oscilloscope?
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 products and the more critical specification to consider is resolution. Did you know that while most […]
