True or false: 30 dBm + 30 dBm = 60 dBm? Why does 1% work out to be -40 dB one time but then 0.1 dB or 0.05 dB the next time? These questions sometimes leave even experienced engineers scratching their heads. Decibels are found everywhere, including power levels, voltages, reflection coefficients, noise figures, field...
Published: Mar 22, 2021
This white paper provides an overview of the basic building blocks of a phased array system and discusses how the nature of their design leads to a challenging test environment. Real measurement configuration examples are shown to highlight the flexibility required for T/R module testing.
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Published: Apr 06, 2020
Most organizations do not consider production test a top priority, but it is a necessity to prevent major quality issues in the products that represent the company brand in the hands of customers.The costs, however, can be significant and are often greatly misunderstood, especially when there’s no...
Published: Feb 19, 2020
As advanced driver assistance systems (ADAS) introduce
new technology into vehicles, they need adaptable, futureproof test systems. NI offers a single, software-defined platform approach to automotive test that can natively integrate all the I/O types you need to test today’s and tomorrow’s ADAS technology....
Published: Jun 05, 2019
Safety, availability, and cost considerations can make performing thorough tests of embedded control devices using the complete system impractical. Hardware-in-the-loop (HIL) simulation is a real-time test technique used to test these devices more efficiently. During HIL test, the physical system that interfaces...
Published: Feb 19, 2020
This application note created by the Test and measurement specialist Rohde & Schwarz and the University of New Hampshire Interoperability Laboratory (UNH-IOL) describes methods of implementation (MOI) for precise, fast and error-free compliance testing of high-speed cables and backplanes according to InfiniBand standards...
Published: Apr 20, 2021
Most organizations do not consider production test a top priority, but it is a necessity to prevent major quality issues in the products that represent the company brand in the hands of customers.
The costs, however, can be significant and are often greatly misunderstood, especially when there’s no easy way...
Published: May 01, 2019
This Whitpaper paper focuses on the new challenges of testing semiconductor devices for wideband 5G applications.The enhanced mobile broadband (eMBB) use case points to supporting greater user data rates and increased system capacity. Departing from legacy 3G and 4G cellular standards, ...
Published: Nov 04, 2019
ECUs became a standard component in most vehicles. As a computer designed to solve a very specific problem, the ECU is a fundamental component in an automobile. Modern vehicles can contain over 100 ECUs with many different purposes.
This white paper explores different approaches to test automotive electronic control...
Published: Feb 19, 2020
A VCXO is a crystal oscillator where its output frequency changes in direct proportion to the application of an input control voltage. There are many names given or assigned to this output frequency being changed with the control voltage, which can be confusing.
Absolute Pulling Range (APR) has become a very...
Published: Jul 25, 2018
Whether you’re putting pencil to paper for your next program bid, assessing the mass-migration costs to move your teams and testers to Windows 10, or portfolio-managing software engineers to support a growing inventory of legacy testers, you are consistently evaluated on your ability to manage cost and risk. You...
Published: Jun 05, 2019
To achieve some of the ambitious Key Performance Indicators of 5G enhanced Mobile Broadband, semiconductor devices for 5G infrastructure need to empower reliable multi-user MIMO (MU-MIMO) functionality at mmWave frequencies with larger channel bandwidths. 5G base stations achieve this spatial multiplexing by employing...
Published: Nov 04, 2019
Feed-forward headsets typically are more easily developed because the design engineer usually does not have to deal with stability issues. A major drawback of this topology, however, is wind noise, since the ANC microphones are directly exposed to the ambient. An alternative that overcomes this drawback is the use of a...
Published: Nov 01, 2018
Modern vehicles can contain over 100 ECUs controlling everything from the drivetrain to the ADAS systems. Each ECU needs to be tested individually as well as in conjunction with other components.
This white paper discusses the five main tester design challenges and five common approaches to ECU production test to...
Published: Nov 04, 2019