385 Results
This document is divided in two parts and starts with an introduction in AC-DC conversion principles in general. It will present the most common circuits used for different power levels. The switching mode power supply (SMPS) converter will be the main focus as they are used everywhere in the electronics. Especially the flyback converter design in different flavors are highlighted. Nevertheless, all measurements are also applicable for other SMPS converter designs operating at higher power levels.In the second part of this document, most relevant testing methods and procedures of an AC-DC converter are highlighted. For each testing section, a fundamental part will be upfront discussed and it is followed by a presentation of a suitable measurement method. In this second part, the device under test (DUT) is considered as black box device and thus the structure is similar. Therefore, the testing parts consists of methods related to input tests, output tests and a combination of both like efficiency. Of course, some test performed at the output of the converter are also relevant for DC-DC converter, e.g. the validation of the output ripple.
14-Nov-2022 | AN-No. 1SL387
To allow optimization early on in the R&D lab, Rohde & Schwarz provides a free tool to simplify conducted emissions debugging using oscilloscopes.
27-Sep-2021 | AN-No. 1SL372
Russian version - Анализ джиттера с помощью цифрового осциллографа R&S®RTO
Russian version - времени простоя цифрового осциллографа на измерения
08-Jun-2022
Rohde & Schwarz presents its full range of embedded systems test solutions at embedded world 2022Nuremberg will be home to the international embedded industry once again during embedded world Exhibition & Conference. Rohde & Schwarz will be showing its latest test solutions from June 21 to 23, 2022 at booth 4-218 of Nuremberg Exhibition Centre. There, visitors can experience product highlights like the new generation of the R&S RTP high-performance oscilloscope, and they can learn from the Rohde & Schwarz experts about state-of-the art test solutions for all kinds of embedded systems.
This application note along with its corresponding white paper 1MA207 show how to use the R&S radar product portfolio to tackle test and measurement tasks in modern radar technology.
10-Aug-2012 | AN-No. 1MA127
This paper describes the characterization of aluminum electrolytic capacitors specifically used in AC-DC power converter applications. It will be discussed why this capacitor technology is critical regarding lifetime and why it cannot be substituted simply by any another capacitor technology. Different aging effects of the capacitor will be discussed. Usage of the capacitor in different AC-DC converter topologies will be presented. Simulation circuits will be used to analyze the capacitor in more detail before suitable measurements will be performed to demonstrate a real example of a switching-mode power supply (SMPS).After the introduction into the aluminum electrolytic capacitor basics and theory, this paper will also present all important and possible measurements of capacitor parameters, like capacitance, equivalent series resistance (ESR) and ripple current. This includes in-circuit measurement which can be performed with an oscilloscope. An LCR-bridge is used to obtain high accuracy measurements in addition. A comparison between the two measurement methods will be presented. Furthermore, the required measurement hardware for the in-circuit measurements and the bridge measurement will be discussed and presented.Lastly, two different lifetime calculation methods are presented and a real example is used to compare the advantages and disadvantages of the different methods.Thanks to Mr. Frank Puhane from Würth eiSos GmbH & Co. KG who provided me with all aluminum electrolytic capacitor samples including the prepared capacitor with build-in temperature sensors to perform all measurements. Furthermore, his great expertise was very beneficial and helpful to create this premium application note.
07-Feb-2023 | AN-No. 1SL388
Measuring the power supply noise rejection (PSNR) requires accurate generation and leveling of artificial, sinusoidal disturbances and measurement of resulting phase-noise and jitter impairments.
30-Sep-2020
This application note summarizes the Rohde &Schwarz test solutions for LTE-Advanced (Release 10) using Vector Signal Generators, Signal and Spectrum Analyzers and the Wideband Radio Communication Tester.
03-Sep-2014 | AN-No. 1MA166
R&S VSE-K70x/FSx-K70x/FPx-K70x Vector Signal Analysis Application - Specifications
This document provides an introduction to SDR as used for military radios and presents the relevant T&M solutions offered by Rohde & Schwarz.
15-Sep-2012 | AN-No. 1MA206
Generating models with a VNA and using these on an oscilloscope via the deembedding
23-May-2023 | AN-No. 1SL393
Comprehensive test solutions guide for production and R&D
Small cell is a compact base station with smaller form factor and lower transmission power in comparison to the conventional macro base station. It covers relatively small area and serves less users. Usually, small cell can be integrated into the existing mobile network. By the evolution of radio access technology, the role of small cell has been changing through the evolution path. In the 2G/3G time, its role was to provide coverage in corner cases. Later during LTE, networks are not just providing coverage but capacity too. Small cells were then used to provide the addition capacity where required without adding additional spectrum. Now in 5G era, network operators use densification as an important strategy to provide seamless 5G services which demand coverage, capacity and performance too. With use cases requiring the 5G millimeter wave (mmW) rollouts, it makes sense to use small cells for densification due to the propagation characteristics of mmW.In this application note, we will shed light on the testing aspects of a small cell throughout the product life cycle with particular focus on the production test solution for the small cell device under test (DUT) in FR2 (frequency range 2, mmW frequency band) in Over the Air (OTA) environment for option 6 split based on radio communication tester R&S®CMP200 and OTA chamber R&S®CMQ200. The document is complemented with more insights into test solutions used in typical R&D test applications towards the second half of the application note.
19-Jun-2023 | AN-No. 1SL395
Selecting your next oscilloscope: Why fast update rate matters | 选择下一代示波器: 为什么更高的波形捕获率很重要 - White Paper Brochures and Data Sheets White Paper
Rohde & Schwarz Drivers under VEE - Installation and Troubleshooting
20-Dec-2012 | AN-No. 1MA035
This application note expands modulation bandwidth up to 2 GHz and covers both V- and E-band examples.
18-Jun-2015 | AN-No. 1MA257
12-Oct-2022
Rohde & Schwarz empowers launch of 4D imaging radar platform by automotive radar manufacturer Cubtek in partnership with NXPCubtek Inc. is using network analyzers from Rohde & Schwarz in the development of 4D imaging radar for RF measurement of the E-band. Rohde & Schwarz oscilloscopes and their independently developed, application-specific integrated circuits (ASIC) provide the best measurement tools for automotive radar research and development.
Increasing demands on power distribution networks have resulted in smaller DC rails, as well as a proliferation of rails that ensure clean power reaches the pins of integrated circuits.
07-Mar-2017
Signal model based approach to joint jitter and noise decomposition - First published at DesignCon 2020 - White Paper
This application note explains how to convert different Rohde&Schwarz I/Q file formats among each other using the supplied software tool.
23-Sep-2015 | AN-No. 1EF85
11-Jul-2022
Rohde & Schwarz showcases its market-leading, reliable EMC test solutions at EMV in CologneAt the EMC event EMV in Cologne, Rohde & Schwarz demonstrates a comprehensive range of EMC test and measurement solutions – ranging from standalone instruments and software to application-specific systems. As a highlight, the company unveils an important enhancement to the R&S ESW EMI test receiver, the new 1GHz bandwidth extension. The Rohde & Schwarz solutions are on display from July 12 to 14, 2022 at the Cologne exhibition center, hall 10.2, booth 112.
Verify the energy efficiency of your O-RAN radio units
19-Mar-2024
This application note shows developers and manufacturers of devices with LoRa wireless technology how transmitter measurements are conducted in line with FCC Part 15.247.
29-Nov-2017 | AN-No. 1MA295
From designing a test setup to performing accurate measurements
This application note discusses important aspects of double-pulse test setups as well as how to perform accurate measurements. Double-Pulse testing is a standard test-method.
22-Mar-2021 | AN-No. GFM347
This document provides: - An explanation of update rate - How users can quickly perform their own update rate characterization - How to compare vendor update rates - Benefits of fast update rate
This document provides: - An explanation of analog versus digital triggering architectures - User advantages for oscilloscopes that have digital triggering - How to determine if an oscilloscope has a digital or analog trigger
本白皮书包含以下内容:- 模拟和数字触发架构 - 数字触发示波器的优势 - 如何辨别数字或模拟触发示波器
01-Mar-2023
Embedded world 2023: Rohde & Schwarz showcases its state-of-the-art test solutions for embedded systemsEmbedded systems are at the core of today’s electronic devices, whether in consumer electronics, telecommunications, industrial, medical, automotive or aerospace applications. Flawless operation is crucial, and engineers face complex challenges when designing ever more compact embedded systems which meet today’s demands of efficiency, safety, reliability and interoperability. Rohde & Schwarz addresses these challenges with its wide-ranging test and measurement solutions showcased at the embedded world Exhibition & Conference 2023 in Nuremberg.