Saelig Company, Inc. has introduced the PSU-HV Series of single output programmable switching DC power supplies that can provide up to 15A current and cover a power range up to 1560W. These high efficiency, high power density 1U-height supplies include five models from 100V to 600V output. More than one unit can be combined for […]
System runs simultaneous cellular/WiFi cellular signaling tests over full protocol stack
Keysight Technologies, Inc. today announced a solution that supports simultaneous cellular and WiFi testing. The T5510S Cellular + WiFi Emulation System is a powerful, flexible platform enabled by the combination of Keysight’s UXM network emulator and the Ixia Solutions Group’s Wave Test System. The result is an industry first—a test platform covering a complete cellular […]
Channel emulator tests LTE-LAA and HetNet small cell instrumentation
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 […]
