Posted by Nigel Robson

Signal Processing Applications

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Laser testing at IAP offices Unloading of the mobile LIDAR onto the fast ice in front of the Australian Antarctic station Davis (69° S) from the ice breaker \"Aurora Australis\" Grosshansdorf, Germany - 12. December 2018. Atmospheric research uses pulsed laser beams to measure temperature and wind speed along the beams by measuring the Doppler shifted and backscattered light at 100 km height in the atmosphere. The returning light signals are very weak and can be blocked by sunlight, but The Leibniz Institute for Atmospheric Physics (IAP) has solved this problem: they developed the world's only portable instrument that can be used during the daytime and it has already provided new insights into Antarctic atmospheric conditions. This new generation of compact and reliable systems uses a novel, diode-pumped laser and, at its heart, are a Spectrum Instrumentation Arbitrary Waveform Generator (AWG) and two Digitizers that provide the extremely high speed, sensitivity and real-time capability required.

The measuring technique is called Doppler resonance LIDAR as the light is backscattered by tuning the laser precisely to a resonance transition of a metal atom. The backscattered signals are extremely weak (single photons per laser pulse) and are almost completely drowned out by solar radiation during the day. The difference between night and day measurements is that there is 100,000,000 times more background noise during the day from the sun.[Continue reading →]

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Spectrum\'s M4x.22xx modular PXIe Digitizers Grosshansdorf, Germany -- 1 December 2016. Spectrum GmbH has expanded its line of PXIe-based (PXI Express) high-speed digitizers with nine new cards. The new M4x.22xx series includes modules that offer one, two or four fully synchronous channels.

Each channel is equipped with its own analog-to-digital converter (ADC) with real-time signal sampling at rates from 1.25 GS/s to 5 GS/s and scope-like signal conditioning circuitry that allows programming of parameters such as input gain, signal offset and coupling.[Continue reading →]

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Grosshansdorf, Germany, 29 July 2016. Spectrum Instrumentation's release of a new line of arbitrary waveform generators (AWGs) based on the LXI instrumentation standard opens new doors for engineers and scientists who need to generate electronic signals in automated test and remote applications. The new generatorNETBOX series features seven new models to give users a wide choice of performance levels.

Technical Highlights: [Continue reading →]

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The Spectrum M4i.77xx series of Digital Data Acquisition cards represent a major performance breakthrough for test engineers who require high-speed digital data logging with multi-channel logic analysis over extended time periods.[Continue reading →]

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Grosshansdorf, Germany - Spectrum is pleased to announce that it is boosting its sales and support services in the US with the opening of Spectrum Instrumentation Corporation. Spectrum, headquartered in Grosshansdorf, Germany, is a pioneer in design and manufacturing of PC based test and measurement instrumentation that is used for electronic signal capture, generation and analysis. The company specializes in high-speed digitizer and generator technology and has available over 400 modular products in the popular industry standards; PCIe, LXI and PXI.

Managing Director of Spectrum, Gisela Hassler, says: "The importance of the US market continues to grow for us, particularly with the recent release of a number of high-end digitizer products. Our US customers are generally early technology adopters and they are looking for products that give them a technical edge. Modular hardware and software products need to be backed up with good application support. One thing that really helps to facilitate this is direct access to our engineering expertise and knowledge. As such, the timing is right for us to increase our local presence."[Continue reading →]

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Signal Processing Types

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Spectrum has announced the release of two Arbitrary Waveform Generators (AWGs) that set new standards for speed, precision and size. The single channel M4i.6630-x8 and dual channel M4i.6631-x8 AWG cards are capable of outputting electronic signals at rates of up to 1.25 Giga Samples/second (GS/s) with 16-bit vertical resolution. The combination makes these new AWGs ideal for generating high frequency signals up to 400 MHz with the best possible accuracy and fidelity.[Continue reading →]

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The graph shows how the importance of thorough testing can improve the yield as products become more complex This graph shows all the measurements results of one test step with the y-axis indicating the limits extracted from the Cpk analysis above. In this example, the lower limit is 0.0000006 (0.6uF) and the upper limit is 0.0000012 (1.2uF). The spread of the measured values within the limits can be seen and any abnormalities are easily detected for immediately remedy. Heerbrugg, Switzerland - ESCATEC, one of Europe's leading providers of contract and manufacturing services, is rolling out ESCADA software across its contract manufacturing facilities. ESCADA enables the data gathered at the testing phase to be intelligently used to reduce manufacturing faults. Pioneered and developed in its central European facility in Heerbrugg, Switzerland, last year, the specially written data analysis software will be installed at ESCATEC's high volume manufacturing facilities in Malaysia in 2015.

"The ESCATEC Data Analysis (ESCADA) enables us to spot manufacturing issues much earlier and correct them," explained Thomas Eschenmoser, ESCATEC's Section Head Test Engineering. "This is a key part of our drive to catch problems early as part of our on-going programme to reduce production costs. These savings we can then pass on to customers. In addition, by having a detailed database of test results and issues, it becomes much easier to fix any problems that occur later in a product's life. As a rule of thumb, fixing an issue once a product is out in the field can cost up to hundred times more than fixing at the component level during manufacture."[Continue reading →]

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