RF Signal Generators

Saelig Co. (Fairport, NY) announced Rigol DSG800 RF signal generators with output frequencies from 9 kHz to 3.0 GHz. They provide an RF signal source with a maximum output of +20 dBm and frequency resolution of 0.01 Hz at any frequency. Featuring SSB noise of -115 dBc/Hz, they feature a stable internal clock for creating RF test signals. The instruments provide conventional sweep functions (step, list, logarithmic, and linear) as well as analog modulation functions including amplitude modulation, frequency modulation, phase modulation, and pulse modulation. They also offer an optional pulse train generation capability for translating serial data onto an RF link without additional hardware. The pulse train can be used as the modulating signal of pulse modulation, and can also be output as an independent pulse generator.

Posted in: Products, Manufacturing & Prototyping, Test & Measurement


Executive Perspectives: Test & Measurement

DR. JAMES TRUCHARD President, CEO, and Co-Founder National Instruments Austin, TX www.ni.comThe world of technology has moved to software — it started in the PC industry, but quickly manifested in the smartphone industry with operating systems like iOS and Android. We now see software making its mark in the test and measurement industry where it is revolutionizing how engineers and scientists solve grand challenges. But it wasn’t always this way. We have seen tremendous innovation in the test and measurement industry over the past four decades.

Posted in: Articles, Aerospace, Test & Measurement, Measurements, Computer software and hardware, Productivity, Test equipment and instrumentation


Executive Perspectives: Test & Measurement

JAY ALEXANDER Chief Technology Officer Keysight Technologies, Inc. Santa Rosa, CA www.keysight.comTo travel back 40 years in test and measurement, I reached for the paper equivalent of Doc Brown’s DeLorean: the 1976 Hewlett-Packard Electronic Instruments and Systems Catalog. Flipping through the 576-page book, the product photos told a very “analog” story: many front panels featured knobs, dials, and panel meters. Some included a CRT display, and these were circular in the older models. A few featured numerical LED readouts.

Posted in: Articles, Aerospace, Test & Measurement, Measurements, Internet, Test equipment and instrumentation


A Brief History of Modern Digital Shaker Controllers

Over a period of 40 years, four generations of digital vibration exciter control systems have been developed by various companies in the USA. They are categorized as standalone, PC-based, PC-tethered, and fully networked. This paper discusses the evolution and improvement of shaker controllers and the critical parameters that users should consider during the acquisition process.

Posted in: White Papers, Test & Measurement


Full RF Signal Chains from 0 Hz to 110 GHz

Analog Devices (ADI) has expanded its RF capabilities in the full signal chain, including companion products, in the full bandwidth from 0 Hz to 110 GHz.This white paper provides examples of the wider frequency spectrum covered by ADI, and explains that true DC is important. Off signal chain performance is also critical, and this paper shows how low-noise, high-stability control and power components are important to overall RF signal performance.

Posted in: White Papers, Electronics, Semiconductors & ICs, Data Acquisition, Sensors, Test & Measurement


Computer Aided Design of Suspension Mechanisms

Automobile suspension mechanisms have to date been designed using two-dimensional graphic oriented methods. Computer-aided design has allowed many two-dimensional mechanisms to be designed much more accurately. However, this has not translated to suspension mechanisms because these mechanisms are not two-dimensional but instead three-dimensional.

Posted in: White Papers, Electronics & Computers, Manufacturing & Prototyping, Software, Test & Measurement


Live-Cell Microscopy and Traction Force Measurements with Simulated Microgravity “Clinochip”

Goddard Space Flight Center, Greenbelt, Maryland The deleterious effects of microgravity are undeniable: reduced bone mineral density, muscle atrophy, vascular remodeling, etc. These health issues may derive from both systemic factors, and from direct alterations to intracellular components and in the local microenvironment around cells. To understand the biological mechanisms at play, detailed studies have been performed in spaceflight. However, because experiments on the International Space Station (ISS) can be prohibitively expensive, clinostats are an alternative ground-based analogue for cellular studies. Clinostats “randomize” the orientation of gravity with respect to the cell fixed-frame, thereby simulating microgravity by eliminating a preferential gravity direction.

Posted in: Briefs, TSP, Test & Measurement, Medical, health, and wellness, Biomechanics


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