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Martin Rowe

Swapfest May 2025: test equipment

June 2, 2025 By Martin Rowe Leave a Comment

Krautkrämer USM 2

The May 2025 gathering of the monthly electronics “Flea at MIT” swapfest featured an excessive number of test instruments. We break them down into oscilloscopes, meters, and signal sources. Click on any image to enlarge in a new tab. Oscilloscopes A Tektronix analog modular oscilloscope. The black bezel hides the model number. This unit has […]

Filed Under: Calibration, Communication Test, Featured, Meters & Testers, Oscilloscopes, signal generator, signal generators Tagged With: Hewlett-Packard, rigoltechnologies, Tektronix

Modular tester simulates and tests control systems

May 21, 2025 By Martin Rowe Leave a Comment

Speedgoat Pulse test system

The Pulse Real-Time Target Machine from Swiss company Speedgoat uses a set of I/O modules so you can configure s test system that meets your needs.

Filed Under: Automation, Automotive and Aerospace, data acquisition, Electromechanical, Featured, Modular Instruments Tagged With: Speedgoat

Teardown: HP 8112A pulse generator

May 13, 2025 By Martin Rowe 1 Comment

This 50 MHz pulse generator was built as solid as a rock. It’s almost all metal. We take the unit completely apart and look at it from a system and board level. On a visit to the MIT swapfest in 2024, I came across an HP 8112A 50 MHz pulse generator. For $20, I brought […]

Filed Under: Bench Test, Featured, Instrumentation, New Articles, signal generator, signal generators, Video Tagged With: analogdevices, Hewlett-Packard, keysighttechnologies, NXP Semiconductors, texasinstruments

OFC 2025: Test equipment

April 21, 2025 By Martin Rowe Leave a Comment

This year’s OFC in San Francisco featured one thing, or so it seemed: 1.6T. Every company making optical modules was showing them lest they be left behind in the always accelerating data rate race. As with any emerging technology, test equipment must lead the way. After all, how do you know if anything works unless […]

Filed Under: Communication Test, Featured, Optical, vector network analyzers, Video Tagged With: anritsu, bristolinstruments, EXFO Electro-Optical Engineering Inc., keysighttechnologies, spirentcommunications, viavisolutions

Phone chargers produce EMI: We compared four

April 15, 2025 By Martin Rowe Leave a Comment

Four chargers USB

The switching power supplies that regulate output voltage produce radiated emissions. Our tests compare waveforms that give clues as to how the chargers operate.

Filed Under: EMI/EMC/RFI, FAQ, Featured, oscilloscope measurements, Power supplies Tagged With: Anker, Apple, JBL, UNI-Trend

Signal Hound claims first 40 GHz USB VNA

April 9, 2025 By Martin Rowe Leave a Comment

RF components such as connectors, cables, antennas, and PCB traces need characterizing so you know how they will perform. That’s where a vector network analyzer (VNA) can help. Signal Hound, well known for its USB spectrum analyzers, has introduced the VNA400, a 40 GHz VNA that connects to and gets power from its single USB-C […]

Filed Under: Analyzer, vector network analyzer, vector network analyzers Tagged With: signalhound

Modular system combines DMM with DAQ

March 27, 2025 By Martin Rowe Leave a Comment

DAQ3120

The DAQ3120 from B+K Precision lets you install up to three measurement modules to create a custom system for your bench. Most engineers have a digital multimeter (DMM) for basic measurements such as voltage, current, and resistance. Sometimes, however, you need the flexibility to add channels and log measurements without or without a computer. That’s […]

Filed Under: APEC 2025, Bench Test, data acquisition, data recorders, Events, Meters & Testers Tagged With: b&kprecision

APEC 2025 test equipment: power sources and loads

March 26, 2025 By Martin Rowe Leave a Comment

DAQ3120

Powering electronic devices requires the testing of power supply and charging circuits, battery management systems (BMSs), and battery cells. Many of these circuits require voltage, current, and power measurements, plus numerous others. Oscilloscopes and probes let you see the waveforms in power-delivery circuits, but the circuits themselves may need simulated batteries and simulated loads. That’s […]

Filed Under: data acquisition, Electronic loads, Featured, instrumentation power supplies, New Articles, Power supplies, Video Tagged With: ametekprogrammablepower, b&kprecision, chromaate, Hioki, ITECHElectronic, Picotest

APEC 2025 test equipment: oscilloscopes and probes

March 24, 2025 By Martin Rowe Leave a Comment

oscilloscope and probes in power electronics

Oscilloscopes and probes play a vital role for engineers designing and testing power electronics. Delivering electrical power to analog and digital circuits and systems is more than just DC measurements. That’s because nearly all power-converter circuits use switching techniques to maximize efficiency. Silicon carbide (SiC and gallium nitride (GaN) transistors, with their higher voltage and […]

Filed Under: Digital Oscilloscope, EMI/EMC/RFI, Featured, Meters & Testers, Power supplies, Video Tagged With: cleverscope, keysighttechnologies, rohdeschwarz, Tektronix, teledynelecroy, Yokogawa

Tryout: Uni-T UPO1202 200 MHz oscilloscope

January 17, 2025 By Martin Rowe 1 Comment

Uni-Trend UPO11202

You need not spend a ton of money to get a feature-packed oscilloscope, provided you don’t need high bandwidth. While the oscilloscope works well, the free software needs help. After seeing the Uni-Trend (Uni-T) UTG962E Function/Arbitrary Waveform Generator ($182), we at EE World bought one and, at the same time, ordered a UPO1202 200 MHz […]

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Filed Under: Digital Oscilloscope, digital phosphor oscilloscope, Digital Storage Oscilloscope, FAQ, Featured, oscilloscope measurements, Oscilloscopes, Video Tagged With: UNI-Trend

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