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Focus on Test

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from Rohde & Schwarz

Testing is key to any electronics activity. It is necessary to test an item to ensure that it operates correctly. The test equipment is also key as it provides the functionality to be able to make the tests that are needed - having the right test equipment and knowing how to use it of great importance. In this area, discover some important insights into testing, test equipment and some useful techniques that can be used.

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R&S®FSW Signal and Spectrum Analyzer

Spectrum analysers are being used increasingly in many development programmes as the need for high quality RF measurements is realised. The high-performance R&S®FSW signal and spectrum analyser was developed to meet demanding customer requirements. Offering low phase noise, wide analysis bandwidth and straightforward and intuitive operation, the analyser makes measurements fast and easy. Find out more about this impressive piece of kit . . . . .

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RF Testing on Automotive Infotainment Devices

Automotive infotainment has come a very long way in recent years. What used to be the car radio has evolved from adding a cassette player to state of the art entertainment on the move. Now infotainment is far more complicated enabling mobile phones to be connected, music devices, SatNav and many more items. The RF testing these can present a real challenge. Find out how to effectively test these systems . . .

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Automotive Radar Sensors - RF Signal Analysis and Inference Tests

Road safety is a global challenge at present and will be in the future. Automotive radar has become a keyword in this area and pushes again a step forward to increase driving comfort, crash prevention and even automated driving. To ensure that any radar systems perform to the required standard they must be tested thoroughly before they are used. Find out more . . . .

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USB power delivery compliance testing with Rohde & Schwarz digital oscilloscopes

Digital oscilloscopes are able to provide new levels of fault-finding functionality. They are able to provide much higher levels of insight into the operation of digital circuits which can prove invaluable in many instances. One of the key advantages of USB power delivery (USB PD) supported by USB Type-C™ connectors is the capability to transmit power up to 100 W. Using low speed signalling, the devices negotiate a USB PD profile. Suppliers of USB Type-C components and device vendors utilising the USB PD standard need to ensure interoperability in terms of protocol handshake and signal integrity. Raed more . . .

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Quick and efficient troubleshooting with the R&S®Scope Rider

Robust and portable oscilloscopes are very important for field service and many other applications. Signal faults and anomalies can cause electrical and electronic systems to fail and they may be located anywhere. Especially in the field, these errors can lead to system downtimes and produce high costs. Consequently, finding them quickly and efficiently as well as identifying their source are crucial. Find out how to achieve fast effective fault finding . . .

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Testing IoT designs with the R&S®RTO2000 - Focus EMI Debugging

The need for Internet of Things (IoT) solutions can arise fast. In most cases, wireless communications modules are added to an embedded design. When designing and debugging IoT systems, many different measurements need to be performed. Since developers are very familiar with using an oscilloscope for voltage and time measurements, they also want to use it to for all other necessary measurements. And now they can – with the R&S®RTO2000 multi-domain oscilloscope. Find out more . . .

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Comparison of jitter measurements in the time and frequency domain

Jitter on a signal is of major importance for systems transmitting data. It is recommended to use jitter measurement instruments for both the time and frequency domain in order to differentiate between fast and slow moving artifacts. Read more . . .

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5G Waveform Candidates

5G mobile communications is ow being standardised and development activities have also started. One of the key issues is that of the waveforms to be used. Find out all about the 5G candidate waveforms for transmitting data over 5G networks.

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Antenna Beam Characterization of 5G Mobile Devices and Base Stations

With frequencies of 28GHZ being proposed for 5G technology, t is necessary tog et up to speed on how to measure aspects like beamsteering and other key parameters. Download this useful whitepaper to gain some key insights into beamsteering and other related aspects of base station technology. Conducted measurements will be mainly replaced by over-the-air measurements of electromagnetic radiation. Rohde & Schwarz offers the R&S®NRPM Over-the-Air (OTA) Power Measurement Solution that perfectly fits such measurement needs. Read more . . .

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Antenna Array Testing - Conducted and Over the Air: The Way to 5G

5G is anticipated to revolutionise connectivity - it is far more than just another cellular network. As a result, networks will need to offer more capacity and flexibility while lowering the operational expenses of the system. Two new technologies can simultaneously address both the increase in capacity and the increase in energy efficiency: Virtualization & Massive MIMO. This white paper provides key insights into test solutions addressing current and future requirements for antenna verification including both conducted and over-the-air (OTA) test methods, which result from applying Massive MIMO antenna technology. Find out all you need to know about these exciting new technologies.

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Outphasing, Envelope & Doherty Transmitter Test & Measurement

Energy efficiency RF transmitter amplifiers continues to be of paramount importance. Meeting the efficiency challenge is increasingly difficult at higher operating frequencies and bandwidths, such as those proposed for 5G.

Technologies including Doherty amplifiers, envelope tracking as well as architectures that use predictive, post-correction linearization are widely used. Their predictive nature enables distortion to be (in theory) completely eliminated, irrespective of the non-linear properties of the individual signal paths.

Find out more about these technologies and their applications for the 3.5 GHz NR (5G New Radio) candidate band. These techniques can easily be transposed to use in K-band satellite applications or mmW NR candidate bands, where efficiency is an even more crucial design target with non-negotiable linearity constraints. Read more . . .

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Multi-Channel Signal Generation Applications with R&S®SMW200A

The R&S®SMW200A vector signal generator has the outstanding ability to simultaneously generate up to eight independent signals from a single instrument. The advanced multi-channel architecture allows realizing even complex applications like MSR, carrier aggregation, MIMO or enhanced interference scenarios with a minimum of effort. Read more . . .

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RF Pulse Measurements in Time and Frequency Domains

RF pulse measurements, to characterize the signal in the frequency domain, are traditionally carried out on an RF spectrum analyzer. For time related pulse parameters, oscilloscopes are widely used. However, the measurement capabilities of state of the art test and measurement equipment has evolved over time and crosses domains. With a combination of a digital oscilloscope and dedicated pulse analysis software, pulse signals can be analyzed in both domains, frequency and time.

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Group Delay Measurements with Signal and Spectrum Analyzers

Phase distortions in a transmission channel need to be as low as possible to maintain good signal quality, especially with phase based data modulation schemes. Accordingly it is necessary to measure the performance of systems and this is often achieved using group delay measurements. Vector network analyzers are normally used to characterize the group delay variations as a measure of phase distortion. Find out how this can be achieved along with some key practical aspects of making successful measurements.

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Characterizing Active Phased Array Antennas

Designing and implementing an active phased array antenna requires precise characterization of individual components and the integrated performance of the array. To ensure an accurate test of the intended adaptive nature of the active phased array antenna, the embedded algorithms need to be tested as well. Find out about the test procedures and read about recommendations for the characterization of the relevant parameters for active phased array antennas and their passive subsystem, as often used in applications for Mobile Communication and RADAR. Read more . . . .

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Generating Multiple Phase Coherent Signals – Aligned in Phase and Time

This application note explains how to generate phase coherent signals using signal generators. It details what to consider and how to best calibrate the relative phases and timing between the individual channels. In addition to this it includes in-depth details about measurements of the phase stability over time for different RF frequencies. Read more . . .

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Radar Echo Generator

Radar test systems are essential in research, development, production and maintenance of radar systems. Most radar tests are expensive to carry out in the field and have a complicated setup and operation. One of the main advantages of the Radar Echo Generator presented in this application note is its ability to generate arbitrary virtual radar echo signals in real time in the laboratory using only commercial measuring equipment. The Radar Echo Generator not only allows to reproduce the results and automate the tests, but also it significantly reduces the measurement effort and costs while providing greater utility for the existing common test equipment. Read more . . .

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Vector Signal Generator Multi-Channel Signal Generation Applications

Multichannel vector signal generators can be used to set up a variety of scenarios for testing modern RF electronics systems. With many complex applications like testing MSR, carrier aggregation, MIMO and enhanced interference scenarios the new generation of advanced vector signal generators provides an easy means of realising these test applications.

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Narrowband Internet of Things Measurements

The Internet of Things or IoT is one of the major driving forces, not only for wireless communications, but also the wider electronics scene. There are many wireless standards that cater for IoT data communications, but the cellular standards are now providing more capability in this area. In release 13, 3GPP has specified Narrowband-IoT, NB-IoT, as a new physical layer. Find out more about NB-IoT and how to make some of the essential measurements.

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IoT Power Consumption Measurement

One of the key requirements for any Internet of Things, IoT device is that of its power consumption. The level of power will determine the lifetime of devices and as a result the power consumption is key. Measurement does not just mean measuring a simple average voltage and current, but needs to be far more sophisticated to gain real insight into the issue. Find out how meaningful power measurements can be made.

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From cable replacement to the IoT: Bluetooth 5

Bluetooth has been an unparalleled success. It is the wireless standard that is in many billions of consumer devices from phones to headphones and wireless speakers to computers, automobiles, wearables and many more. Find out more about the various Bluetooth technologies and in particular what Bluetooth 5 is.

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What to consider when incorporating an intelligent touch screen display into your product Markku Rihonnen | 4D Systems
What to consider when incorporating an intelligent touch screen display into your product
Gone are the days of rotary switches, push buttons and seven segment displays. Incorporating touch screen displays into embedded designs is the trend, accelerated of course by consumer adoption of the smartphone.


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