800G multi-mode test portfolio now supports 400G and 800G validation 

High speed 800G test options from Keysight Technologies have been expanded to include 400G and 800G validation to improve power efficiency in data centres.

The initial 800G test products enable users to verify the performance of a range of optical transceiver modules and components, including vertical cavity surface emitting lasers (VCSELs), photodiodes, modulator drivers, transimpedance amplifiers (TIAs) and physical layer (PHY) chips.

The extended portfolio supports 400G and 800G design validation, in accordance with standards defined by the Institute of Electrical and Electronics Engineers (IEEE), across the entire product lifecycle, from early research and development to manufacturing.

As hyperscale data centres adopt 800G as a connectivity technology, there has been an accompanying rise in the use of cloud-native, 5G, AI and IoT applications as well as an increased in data-hungry applications such as video conferencing, streaming and digital entertainment. The latest addition to Keysight’s portfolio of 800G test equipment offer design and validation to support multi-mode interfaces, which are critical for an energy-efficient data centre infrastructure, explained the company. The 800G multi-mode test equipment supports data interconnect speeds of up to 100Gigabits per second.

Test capabilities include multi-mode component characterisation using the N4373E lightwave component analyser, conformance and interoperability validation using N1077B 64Gbaud multi-mode optical and electrical clock recovery options and transceiver module performance evaluation using Keysight’s A400GE-QDD and G800GE layer 1 multi-port test.

Keysight Technologies delivers advanced design and validation products to help accelerate innovation, with software-driven insights and analytics to help bring products to market faster across the development lifecycle, in design simulation, prototype validation, automated software testing, manufacturing analysis, and network performance optimisation and visibility in enterprise, service provider and cloud environments. Customers operate in communications and industrial ecosystems, aerospace and defence, automotive, energy, semiconductor and general electronics markets. 

http://www.keysight.com

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Interference waveform pattern software targets 5G and LTE testing

Tools which generate 3GPP interference waveform patterns for testing the receiver sensitivity and throughput of both 5G and LTE user equipment (UE) and modules using the Vector Signal Generator MG3710E are available from Anritsu.

Installing the Interference Waveform Pattern for 5G NR receiver test MX371055A and Interference Waveform Pattern for LTE receiver test MX371054A software in the MG3710E used in combination with the Radio Communication Test Station MT8000A and Radio Communication Analyzer MT8821C facilitates easy interference evaluation tests required by the 3GPP RF compliance test.

The tools are designed to support both in-house pre-testing for confirming compliance of Sub-6GHz 5G and LTE UE and modules before the official 3GPP compliance test as well as for R&D to improve receiver sensitivity and throughput performance.

Anritsu developed these two 3GPP-compliant interference waveform pattern tools to help engineers without specialist skills generate interference waveforms for easy interference tests.

In parallel with increasing 5G smartphone shipments, annual shipments of 5G customer premises equipment (CPE) are increasing based on mobile operator fixed wireless access (FWA) services. Manufacturers of automotive electronic equipment are developing 5G communications modules, such as the telematics control unit (TCU). Alongside the growing market for 5G UE and modules, the same manufacturers are developing LTE UE and modules for mobile operators who have not started 5G services yet.

Anritsu provides communications test and measurement solutions for 125 years. It helps customers develop wireless, optical, microwave / RF and digital solutions for R&D, manufacturing, installation and maintenance applications, as well as multi-dimensional service assurance solutions for network monitoring and optimisation. Anritsu also provides precision microwave / RF components, optical devices, and high-speed electrical devices for communication products and systems. The company develops advanced solutions for 5G, M2M, IoT, as well as other emerging and legacy wireline and wireless communication markets. 

http://www.anritsu.com 

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Collaboration investigates improving RF switches 

Rohde & Schwarz and FormFactor have supported the University of Texas at Austin in a research project to characterise a new technology for RF switches. The aim is to improve battery life performance and support higher bandwidths and switching speeds.

In 2020, the university published research on an RF switch technology based on hexagonal boron nitrite (hBN). The technology is energy efficient and allows higher bandwidths and speeds, making it ideal for 5G. In a follow-up project, Rohde & Schwarz and FormFactor supported further research to characterise the RF switch technology at sub-THz frequency ranges, in particular at the D-band (110 to 170GHz), for applications beyond 5G and 6G. 

RF switches are used in all forms of transceivers. For example, current 4G and 5G smartphones switch between transmit and receive mode or between different frequency bands, networks, and technologies. Today’s switches need to operate constantly to change between the various states and in doing so consume a lot of power, affecting the battery lifetime of the device. The new RF switch technology stays off until required to switch to a different state, making it up to 50 times more energy-efficient.

Professor Deji Akinwande, from the Cockrell School of Engineering’s Department of Electrical and Computer Engineering at University of Texas Austin, commented: “By using the test and measurement solutions from Rohde & Schwarz and FormFactor our team was able to further characterise this new technology at the D-band, which is a frequency band of global interest for future 6G applications. The equipment was configured in an easy-to-use setup that provided reliable measurement results”.

The test setup consisted of a four-port R&S ZNA43 vector network analyser from Rohde & Schwarz connected to R&S ZC170 frequency extenders that allow to carry out S-parameter and intermodulation distortion (IMD) measurements at frequencies between 110 and 170GHz. There are dedicated IF inputs on the rear of the R&S ZNA43 for reference and measurement signals as well as high power LO signal for the two converters on the VNA, and its front panel ports which are typically used for these signals are available for additional measurements up to 43GHz without the need to re-calibrate the instrument. A graphical user interface (GUI) eases configuration and pertinent signal parameter routing to the converters, says Rohde & Schwarz. The converters were used within FormFactor’s Cascade Summit 12000 probe station, mounted to the mm-wave/THz positioning system. FormFactor’s WinCal XE software tool allowed was used to calibrate the test set up.

The Rohde & Schwarz technology group operates in test and measurement, technology systems, and networks and cybersecurity. Founded more than 85 years ago, the group partners with industry and government customers around the globe. The company is headquartered in Munich, Germany.

http://www.rohde-schwarz.com

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Solid Sands updates SuperTest Vermeer with diagnostic reporting

New tests and line-number accurate diagnostic reporting, together with enhanced floating-point checks to confirm arithmetic accuracy are in the latest update of the SuperTest Vermeer Release test and validation suite. Update #3 supports widespread adoption of the C++ programming language in safety critical applications with comprehensive C++20 language coverage. It also includes over 800 tests designed to verify the correct implementation of C++ language constructs. There are 1700 new tests for C++ library functions to make sure they work as intended in all use cases. 

The ability of C++ to meet the security, functional safety, and behavioural requirements of ISO 26262 has led to increased adoption of C++ in the automotive industry. Many of the latest image processing, signal processing and machine learning algorithms used in advanced driver assistance systems (ADAS) are now written in C++, said Solid Sands. SuperTest now comprehensively supports the test and validation of C++20 compilers enabling developers to keep abreast of the latest developments in C++ programming.

“Vehicle manufacturers are moving from single-core embedded processors to high-performance multi-core processor solutions, for which C++ has a distinct advantage over C in terms of structuring large software projects,” explained Marcel Beemster, chief technology officer at Solid Sands. The AutoSAR Adaptive Platform now includes programming guidelines for C++ and developers wanting to use the latest features in C++ can now verify that their compiler implements them correctly, Beemster added.

For diagnostic tests that are specifically designed to generate a compiler error, SuperTest’s C++ support includes line-number accurate error reporting so that developers can identify the precise language construct that generates the error.

The update also features improved floating point accuracy checking, with the default accuracy limit on arithmetic operations now universally set at four ULP (units in the last place, which is the smallest interval between two subsequent floating point numbers). This limit can be changed by the user, if required. For non-library arithmetic it can be set to zero to check rounding accuracy. There are also enhancements to SuperTest’s arithmetic function testing, including improvements to its powerful arithmetic depth suite that now supports target platforms that do not support floating point arithmetic.

The calling convention test suite has been improved so that it can be used to verify calling conventions within a compiler, verify that no compiler changes break application binary interface (ABI) integrity between different versions of a compiler. It can even test for calling convention consistency between different compilers.

The section traceability report details how each individual test matches the language standard and has been extended to cover all versions of C, including C18, and C++ up to C++17.

Multiple installs of different versions can be managed in the same Windows operating system environment, allowing users to run SuperTest and SuperGuard (Solid Sands’ C Library Safety Qualification Suite), or multiple SuperTest versions, on the same machine.

SuperTest Vermeer Release Update #3 is available now from Solid Sands.

http://www.solidsands.nl 

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