A computer virus hit newspaper printing plants in Los Angeles and at Tribune Publishing newspapers across the country. Tribune Publishing said a computer virus disrupted production of the Chicago Tribune and its other newspapers, the Chicago Tribune reported. The print edition of the Chicago Tribune was published Saturday without paid death notices and classified ads, […]
Test and Measurement Tips
Exploring the difference between a digital oscilloscope and a spectrum analyzer
Traditionally, only the spectrum analyzer was capable of displaying electrical and electromagnetic signals in the frequency domain and the oscilloscope took control of the time domain. More recently, each instrument has become competent in the other’s territory. But this overlapping tendency is far from absolute. Oscilloscopes, working in the Math>FFT mode, have always had a […]
Analog and digital modulation and modulation measurements
In amplitude modulation (AM), the amplitude of a carrier wave whose frequency remains constant changes in response to the modulating signal. In frequency modulation (FM), it is the frequency of the carrier that varies with the amplitude of the modulating signal. The carrier frequency deviates more when the modulating signal amplitude is higher. There are […]
Affordable data streaming and visualization service targets individual engineers
A cloud-based data streaming and visualization service for individuals includes unlimited data streaming and beautiful visualizations and is priced at $9.99 per month or $99 per year. The service is free for students. The technology is from Nashville, Tenn.-based Initial State Technologies Inc., acquired by Tektronix earlier this year. The cloud-based Initial State platform provides […]
Ultra-compact logic analyzers sport large data buffer, built-in bus receivers for serial decoding
The Ikalogic SP2 Series of compact 9-channel 200-MHz logic analyzers offer in-depth analysis of logic signals and protocol decoding with 200-MHz (5 nsec) timing resolution. The nine-channel design allows 8-bit parallel data to be captured along with a clock or strobe signal at the maximum sampling rate without any trade-off between the number of active […]
Flicker spectrometer quantifies light flicker, gauges CIE photometric/radiometric parameter
The GL Spectis 1.0 Touch Flicker Spectrometer is an upgraded version of the handheld Spectis 1.0 Touch Spectral Light Meter. This device can now measure the increasingly important parameter of light flicker in addition to the extensive range of standard photometric and colorimetric values already available. The Spectis 1.0 Touch Flicker Spectrometer is now equipped […]
Three-phase testing basics – Mitigating harmonic current
An electrical conductor warms up when it conveys current. If the heat is high enough the conductor can be damaged, so it is beneficial to limit current flow. Three-phase electrical distribution systems are highly effective in limiting current flow without reducing the amount of power delivered to the load. They do this by separating phases […]
T&M LEAP Award winners announced at gala dinner
At the LEAP Awards dinner gala in Costa Mesa, Calif., the following companies were awarded trophies in the category of Test & measurement. This year’s inaugural LEAP Awards competition honored ground-breaking new products that set a new standard for innovation. Judges rated candidates on categories that included societal impact, industry impact, technical sophistication, creativity, and […]
Multi-function recorder maps ACSI TCP/IP messages to MMS and GOOSE formats
A recorder with IEC61850-8-1, Edition 2, capabilities supports the exchange of time-critical and non-time-critical data through local-area networks (TCP/IP) by mapping ACSI to MMS (Manufacturing Message Specification) and GOOSE (Generic Object-Oriented Substation Event). The TR-3000 multi-function recorder now supports such capabilities such as subscription to GOOSE messages from multiple IEDs (intelligent electronic devices) and the […]
Newark element14 launches new Keysight DAQ970A data acquisition system
Newark element14, the Development Distributor, now carries the DAQ970A Data Acquisition System from Keysight, offering engineers a more efficient way to fully characterize their product and deploy test solutions in just a few days. The product, designed for engineers in R&D design verification and manufacturing, provides a path to design reliability without the need for […]