Electronics

Ethernet-to-HRDL Conversion Design

Dual Ethernet inputs are multiplexed into a single HRDL stream to accommodate Ethernet-based ISS instruments. Goddard Space Flight Center, Greenbelt, Maryland The International Space Station (ISS) uses a fiber optic High Rate Data Link (HRDL) standard for transferring data. ISS experiments, however, may prefer an Ethernet interface. This design allows ISS instruments to keep their Ethernet interface by converting the Ethernet data format into a format compatible with the ISS. The Express Logistics Carrier (ELC) incorporated this design on the ISS in 2010. The design was described with VHDL code. It has been implemented with an Actel RTAX Field Programmable Gate Array (FPGA). This FPGA is part of the Express Logics Carrier (ELC) onboard the ISS.

Posted in: Briefs, Electronics, Electronics & Computers

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Flash LIDAR Emulator

Langley Research Center, Hampton, Virginia The Flash LIDAR Emulator is a computer system designed to be functionally equivalent to a Flash LIDAR sensor camera. The system has the same hardware interfaces as the sensor, and produces images of comparable quality to the flash LIDAR sensor in real time (30 frames per second). The emulator is then used as a substitute for the LIDAR camera during development and testing of the software algorithms and hardware systems that interface with the camera. The emulator software was custom-developed entirely in-house, and integrates tools and techniques from several computer fields, including parallel processing, ray-tracing, geometric optimization, CPU optimization, CameraLink interfaces, lowlevel networking, and GPU-based general computing. The software was designed to run on an 8-processor Dell workstation with an NVIDIA graphics card to support general-purpose GPU computing, and CameraLink and network interfaces to support the hardware interfaces of the Flash LIDAR camera.

Posted in: Briefs, Electronics, Electronics & Computers

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Architecture for an Intermediate-Frequency Digital Downconversion and Data Distribution Network

Developed originally for Deep Space Network downlink receivers, applications include high-speed digital receivers for cellular networks. NASA’s Jet Propulsion Laboratory, Pasadena, California NASA’s Deep Space Network (DSN) is looking to modernize aging downlink receivers for telemetry, tracking, and radio science. It is looking to replace multiple types of custom-built, special-purpose receivers with a unified receiver architecture that can support the various downlink data types. As part of this modernization, it is desired to only digitize the data once and then distribute the data using commercial switching network technology to multiple back-end receiver processing hardware and software. The main problem to be solved is how to distribute efficiently and flexibly high-bandwidth intermediate-frequency (100 to 600 MHz) digitized signals across a signal processing center for use in the DSN.

Posted in: Briefs, Electronics, Electronics & Computers

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Selecting the Right Material for 3D Printing

This industrial 3D printing white paper explores the properties of thermoplastic and metal materials available with direct metal laser sintering, selective laser sintering and stereolithography technologies. It also includes a quick-reference guide of material attributes that can steer you toward the proper grade. Download your free copy today!

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

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2016’s Best Practices for NPI and NPD Success

Smart companies know that well disciplined new product introduction (NPI) processes are critical to success. Yet, even these companies can suffer from NPI failure when important projects, policies, and guidelines are haphazardly managed as clumsy manual processes.

Posted in: White Papers, Electronics, Electronics & Computers, Electronics & Computers, Medical, Software

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High-Performance MEMS IMU Solutions for Demanding Applications

For MEMS IMU applications where the inertial profile is complex and highly dynamic, there are a number of attributes to consider when evaluating capabilities. Evaluating these attributes early in the design cycle provides an advantage over chasing open-ended deliverables, like "as accurate as possible."

Posted in: White Papers, Electronics, Electronics & Computers, Data Acquisition, Sensors

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GSPS DACs Enable Ultra-Wide Bandwidth Applications

To meet the increasing capacity demand of mobile customers, the emerging E-band market requires wider bandwidth capabilities compared to traditional microwave backhaul wireless architectures. Due to increased capacity, 2-GHz E-band systems will be needed in the near future. This white paper covers the demands of current E-band point-to-point systems, and how Analog Devices’ high-speed digital-to-analog converters (DACs) provide the necessary bandwidth and sampling frequencies to support them.

Posted in: White Papers, Electronics, Electronics & Computers, Data Acquisition, Sensors

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