Highlights: New capabilities in Propsim F32 channel emulator enable efficient performance testing of devices and network equipment with LTE-LAA and HetNet small cell technology support The enhanced Propsim F32 allow users to assess all existing, as well as planned, LTE-LAA Carrier Aggregation and Wi-Fi-offloading field deployment scenarios Keysight has developed new LTE-Hi test scenarios, in […]
Testing RF power amps with scopes
by Mike Borsch and Mike Schnecker, ROHDE & SCHWARZ Modern transceivers often incorporate several parallel RF front ends whose control signaling can be sorted out with advanced instrumentation. The radio frequency (RF) front-end configuration in mobile devices continues to evolve and get better. The trend in mobile radio communications is toward complex multi-radio systems perhaps […]
Managing interfaces in power supplies for test equipment
by Lorenzo Cividino and Paul Kingsepp, SL POWER ELECTRONICS CORP An awareness of standards for conducted and radiated emissions helps in fielding power supplies that don’t cause havoc in attached electronics. Innovations such as the Internet of Things (IoT), 5G cellular standards, WiGig, 4K video, and other developments are causing quite a flurry of market […]
Flexible power for critical mission systems
by Gerald Hovdestad, Behlman Electronics Commercial-off-the-shelf power equipment can be an option for situations that normally demand specialized designs optimized for harsh conditions. A lot of DOD and industrial equipment is so specialized that it must be custom-developed – it just can’t be bought off-the-shelf. Ironically, there is a large array of commercial products that […]
How to test DC-to-DC converters
by Larry Sharp, Chroma Systems Solutions, Inc. Functional and safety tests can show whether dc/dc converters perform the way their manufacturers claim they do. DC-to-DC converters (DC/DC) are devices used to convert one dc voltage to another. Users and manufacturers may characterize DC/DC converters by running a variety of tests. We’ll describe several here, but […]
Six oscilloscope features I wish I knew before graduation
by Barrett Poe, Keysight Technologies, Inc. User interfaces have become more advanced and measurements more automated – and less tolerant of improper measurement setups. Long before every oscilloscope carried an autoscale button, and before touch-screen triggering was a gleam in someone’s eye, aspiring engineers would need to manually adjust settings for the time base and […]
One hidden oscilloscope spec that really matters
by Ben Robinson, National Instruments Corp. Bandwidth isn’t necessarily the primary spec for evaluating how well a scope can display signals of interest. Oscilloscope vendors, National Instruments included, like putting big numbers on the front panels of their instruments to tell you how much better they are than competitors. Bandwidth, sample rate, and sometimes bits-of-resolution […]
PC-based platform coordinates multiple arbitrary waveform generators
Tektronix, Inc., a worldwide provider of test, measurement and monitoring instrumentation, introduced a more convenient and flexible way for engineers to control signal sources and generate waveforms. The new PC-based SourceXpress platform allows users to easily setup, synchronize, and remotely control multiple arbitrary waveform generators and introduces a versatile plug-in architecture for waveform creation modules that will […]
Space Vectors aide drive for optimal efficiency
by Johannes Teigelkötter, HBM Using space vectors in test equipment helps engineers get a clearer, more precise picture of three-phase motor electromagnetics. With the continuing emphasis on the use of renewable sources of energy, as opposed to the reliance on fossil fuels, advances in induction motor design are allowing for greater efficiencies in both consumer […]
Scope-based USB-PD protocol decoder software sports real-time triggering and protocol decode performance
Keysight Technologies, Inc. introduced the industry’s first oscilloscope-based USB-PD (Power Delivery) protocol decoder software with real-time triggering and protocol decode performance. The Keysight N8837A USB-PD protocol trigger and decode software provides unique protocol decoder performance that enables engineers to verify and debug Type-C interfaces that implement USB-PD. The Type-C connector introduced the enhanced capabilities of […]
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