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Test Equipment

Why does the Fourier transform provide apparently inaccurate results, and what can I do about it? part 2

February 1, 2024 By Rick Nelson Leave a Comment

A bare-bones implementation of the Fast Fourier Transform helps illuminate how to extract frequency information from input data samples. In part 1 of this series, we reviewed the discrete Fourier transform (DFT) and manually calculated one DFT shown in Table 1. Table 1. Manual DFT results DFT input Complex DFT |DFT| 3 12 + j0 […]

Filed Under: Communication Test, FAQ, Featured, Test Equipment Tagged With: FAQ

Review: Electronic bug and hidden camera detectors

January 30, 2024 By Kenneth Wyatt 1 Comment

Hidden spy cameras

Do you want assurance that cameras embedded in everyday devices don’t spy on you? Then you should check for cameras, SD card slots, and Wi-Fi-connections. We reviewed two devices that help you find those lurking spies. While discovering a hidden camera in an Airbnb, VRBO, or hotel is rare, there have been reports of travelers […]

Filed Under: FAQ, Featured, Machine Vision/Inspection, signal generator Tagged With: FAQ

What is phase noise and how can I measure it? part 2

January 10, 2024 By Rick Nelson Leave a Comment

RBW

Phase noise requires more than one instrument unless you use a phase-noise analyzer.

Filed Under: Communication Test, FAQ, Featured, New Articles, spectrum analyzer, wireless Tagged With: keysighttechnologies, rohdeschwarz

AOC 2023: Exhibits show the latest in military wireless

January 4, 2024 By Martin Rowe Leave a Comment

Washington — The Association of Old Crows (AOC) held its 60th annual convention in Washington during the week of December 11, 2023. EE World was there on December 12. Here is some of what we saw in the exhibit hall. AOC is a defense-oriented conference that focuses on military wireless communications. In addition to product […]

Filed Under: Analyzer, Communication Test, Featured, PC-based spectrum analyzers, signal generator, spectrum analyzer, Video, wireless, wireless test equipment Tagged With: anritsu, Berkeleynucleonicscorp, cheshirindustries, keysighttechnologies, maurymicrowave, menlomicro, pctel, rohdeschwarz, samtec, signalhound, Tektronix, teledynelecroy

How to test the automotive SENT protocol

December 5, 2023 By Rick Nelson Leave a Comment

Oscilloscopes and dedicated software can help analyze SENT data. In “What is the automotive SENT protocol?” we looked at the Single Edge Nibble Transmission (SENT) protocol, as defined in accordance with the Society of Automotive Engineers (SAE) J2716 standard. We reviewed the SENT message frame, which includes a synchronization/calibration pulse followed by a status nibble, […]

Filed Under: Communication Test, Digital Oscilloscope, EV Engineering, FAQ, Featured Tagged With: FAQ

What’s the difference between a USB oscilloscope, spectrum analyzer, and digitizer?

December 4, 2023 By Jeff Shepard Leave a Comment

USB oscilloscopes are highly versatile instruments. With the right software, they can perform functions usually reserved for spectrum analyzers and digitizers. In some cases, however, special instruments are needed for optimal results. This FAQ compares the functions of oscilloscopes, spectrum analyzers, and digitizers with USB interfaces. They are called USB devices because they connect to […]

Filed Under: FAQ, Featured, PC-based Oscilloscopes - PCO, PC-based spectrum analyzers, PC-based Test Equipment, USB-based Oscilloscopes Tagged With: FAQ

Free drivers connect Tektronix instruments to Python

November 17, 2023 By Martin Rowe Leave a Comment

Tektronix announced an open-source Python instrument driver package for the company’s test instruments. Available at no cost, the package provides you with a native Python user experience for instrument automation. With integration into daily workflows and utilizing it with a preferred Integrated Development Environment (IDE), engineers use features such as auto-complete, precise type hinting, comprehensive […]

Filed Under: Automation, Featured, New Articles, Test development software, Test Equipment Tagged With: Tektronix

High-speed digitizers add pulse generation

November 15, 2023 By Aimee Kalnoskas Leave a Comment

After the successful introduction of the Digital Pulse Generator (DPG) option for its medium-speed products, Spectrum Instrumentation has now added the same feature to its ultrafast digitizers (with up to 10 GS/s speed) and Arbitrary Waveform Generators. Available for the entire product line, the low-cost $325 option adds three to four independent digital sources for […]

Filed Under: Sensing, signal generator, Test Equipment Tagged With: spectruminstrumentation

Signal generator puts four channels in a 2U-size box

September 18, 2023 By Martin Rowe Leave a Comment

Designed for bench and production use, the N5186A generates wireless signals to 8.5 GHz and includes a built-in reflectometer. Designing commercial or military wireless receivers, amplifiers, and systems means you’ll need to generate test signals. Keysight’s N5186A MXG vector-signal generator (datasheet) is available in one-channel or four-channel models with Type-N connectors. Each channel can generate […]

Filed Under: Communication Test, Featured, signal generator, signal generators, wireless test equipment Tagged With: keysighttechnologies

Boost/single-ended primary inductance converter (SEPIC) controller for various automotive LED applications.

September 14, 2023 By Redding Traiger Leave a Comment

Spectrum Instrumentation has extended the M5i flagship series of high-speed PCIe digitizers, adding two new models with ultrawide bandwidths that go up to 4.7 GHz for -3 dB attenuation or even 5 GHz for -5 dB attenuation. The models M5i.3360-x16 and M5i.3367-x16 provide one and two channels respectively with prices starting from $27,990. Each card […]

Filed Under: Meters & Testers, Test Equipment Tagged With: spectrum

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