Digital Multimeters

The U1280 and U1240C Series handheld digital multimeters from Keysight Technologies (Santa Rosa, CA) feature 60,000-count display resolution and 0.025 percent accuracy. The 4.5-digit handheld DMMs are suited for electronics manufacturing, installation, and maintenance work in the electronics test industry. The U1240C 4-digit DMMs come with 10,000-count display resolution and 0.09 percent accuracy, and provide a range of measurement functions. The U1240C comes with ZLOW and harmonic ratio. ZLOW provides low impedance mode to eliminate stray voltages. The harmonic ratio function gives an indication of the presence of harmonics. The DMMs are capable of withstanding up to a three-meter (ten-foot) drop. The U1240C is CAT IV 600 V and CAT III 1000 V compliant for electrical testing and measurement. Both series come with extended battery life — 800 hours for the U1280 Series and 400 hours for the U1240C.

For Free Info Visit http://info.hotims.com/61060-402

Posted in: Products, Manufacturing & Prototyping, Test & Measurement
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Multi-Function Instrument

National Instruments (Austin, TX) introduced a high-performance model of the software-based VirtualBench all-in-one instrument that combines a mixed-signal oscilloscope, function generator, digital multimeter, programmable DC power supply, and digital I/O. The new version offers 350 MHz of bandwidth, four analog channels, and Ethernet connectivity. The mixed-signal oscilloscope with protocol analysis delivers 350 MHz of bandwidth and four analog channels for higher-performance interactive test. The higher-wattage programmable DC power supply features up to 3 A for the 6 V output channel, and up to 1 A for the 25 V and -25 V channels for higher current applications. A unified view of all five instruments, visualization on larger displays, and functionality to save data and screenshots are provided.

For Free Info Visit http://info.hotims.com/61060-403

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Strain Gauge Monitors

Bristol Instruments (Boston, MA) introduced the OM502T Series of monitors for strain gauge sensors. The 5-digit instruments are programmable for mathematical functions, including peak and tare, as well as digital filters. The monitors are available with 0.56- inch-tall red or green LED displays, depending on the model. Accuracy is to 0.05% of range, and rate is up to 100 measurements/sec. Up to four relay outputs are available, and can be turned on or off at preset load values. Analog outputs are 0 to 2/5/10 V, ±10 V; 0 to 5 mA; and 0/4 to 20 mA. Digital output interfaces include RS-232 and RS-485 — both isolated — with MODBUS and PROFIBUS protocols. The monitors offer fixed and adjustable excitation options. between 10 to 30 V AC/DC, 80 to 250 V AC/DC.

For Free Info Visit http://info.hotims.com/61060-406

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Shaft Voltage Tester

The AEGIS® CAT II/III Shaft Voltage Tester™ digital oscilloscope from Electro Static Technology (Mechanic Falls, ME) enables testing of industrial motors controlled by variable frequency drives (VFDs). The tester is designed and configured to take and capture voltage measurements from the spinning shafts of motors. The digital oscilloscope comes with a conductive microfiber-tipped probe, a probe holder with magnetic base, and a carrying case. The 2-channel, full-function, 100-MHz oscilloscope has a 5.7" TFT LCD color display, a multi-language user interface, and a 5-hour rechargeable/replaceable lithium-ion battery pack. The oscilloscope is capable of sampling rates of 1 GSa/s to 50 GSa/s, and has a USB port for data transfer or flash drive storage.

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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.

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Executive Perspectives: Test & Measurement

DR. JAMES TRUCHARD
President, CEO, and Co-Founder
National Instruments
Austin, TX
www.ni.com

The 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 / hardware, Computer software and hardware, Computer software / hardware, Computer software and hardware, Productivity, Test equipment and instrumentation
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Executive Perspectives: Test & Measurement

JAY ALEXANDER
Chief Technology Officer
Keysight Technologies, Inc.
Santa Rosa, CA
www.keysight.com

To 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, Internet, Test equipment and instrumentation
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Live-Cell Microscopy and Traction Force Measurements with Simulated Microgravity “Clinochip”

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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Comparison of Three Methods for Measuring Distortion in Optical Windows

The primary function of a window is to allow observation of, and protection from, a potentially hazardous environment. Yet, from the window designer’s point of view, ensuring protection from weather conditions in home windows; from wind, temperature, and airborne debris in automotive windows; and from extreme pressures and temperatures in aircraft and spacecraft windows has almost always taken precedence over image quality. It is more important to protect an astronaut from the vacuum of space than to provide clear imagery, yet these are not exclusive requirements. Advances in materials and material processing allow the designer to attain better optical performance while not sacrificing important material specifications such as strength. In addition, increased performance demands on spacecraft windows — which are now used for photography, telescope observation, and laser communications — require greater consideration of optical clarity.

Posted in: Briefs, TSP, Test & Measurement, Windows and windshields, Finite element analysis, Visibility, Spacecraft
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Measurement of O-phthalaldehyde (OPA)

O-phthalaldehyde (OPA) is a high-level disinfectant commonly used, for example, for sterilization of heat-sensitive medical instruments; it demonstrates effective microbicidal activity against a wide range of microorganisms (including mycobacteria, gramnegative bacteria, and spores). On the International Space Station (ISS), to achieve thermal control and maintain components at acceptable temperatures, systems that produce waste heat need to have that heat transferred from the ISS to space. To accomplish this, the ISS has an Internal Active Thermal Control System (IATCS) — a water-based system that works in conjunction with the EATCS (External ATCS), an ammoniabased system — to facilitate this heat transfer process.

Posted in: Briefs, Test & Measurement, Thermal management, Thermal management, Chemicals, Waste materials, Coolants, Spacecraft
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