应用搜索
罗德与施瓦茨已制定一系列的应用指南、应用说明以及应用视频,旨在分享我们在测试与测量仪器方面的知识、原理及方法,并帮助您充分发挥罗德与施瓦茨公司测试与测量仪器的效能。
应用搜索
罗德与施瓦茨已制定一系列的应用指南、应用说明以及应用视频,旨在分享我们在测试与测量仪器方面的知识、原理及方法,并帮助您充分发挥罗德与施瓦茨公司测试与测量仪器的效能。
1099 结果
电源转换器在任何情况下都需要稳定运行。大部分转换器会在不同条件下工作,例如不同的负载阶跃、启动/关闭序列和输入电压变化。除了标准反馈控制环路之外,转换器的脉冲宽度调制 (PWM) 控制器还提供扩展功能,包括线路前馈环路控制和软启动控制。这些扩展控制功能可以在特定条件下更好地调节电源转换器。这种复杂的调节系统需要利用尖端方法,保证转换器在所有模式下都能正常运行。这需要运用渊博的专业知识和合适的测量工具来发现并定位系统中的意外情况。
10月 11, 2023
Automotive radar sensors can be well hidden behind bumpers, but require to be transmissible in the respective frequency domain. To effectively hide the sensors, the radar-transparent areas are usually required to have the exact same shade of color as the rest of the vehicle. To select proper colors and coatings for such bumpers, the respective material properties must be known. In the past, either quasioptical or waveguide based setups, both using vector network analyzers (VNA), have been used. This application card demonstrates a simplified method for material characterization in the automotive radar frequency domain (76 GHz to 81 GHz) based on the R&S®QAR50 automotive radome tester.
Oct 04, 2023
Spectrum scans are beneficial for many use-cases such as troubleshooting, interference detection and interference hunting, or verification tasks like scheduler verification or other engineering tasks. A time-gated spectrum scan, which is a power spectrum scan which applies a time gate on uplink/downlink slots/symbols and/or the guard period reveals even more details in uplink/downlink or guard period power spectrum. This allows to focus on the uplink / downlink or guard period power spectrum in 5G NR TDD networks. This educational note explains use cases for spectrum measurements, the complexity in 5G TDD and its technology basics, and which problems can be solved with the described solution. The software used is R&S®ROMES4 together with a R&S®TSMx6 drive and walk test scanner.
Sep 21, 2023 | AN-No. 8NT08
The R&S®CMW wideband radio communication tester platform (R&S®CMW500, R&S®CMW270) uses high accuracy distance measurements (HADM) with phase based ranging (PBR) for a comprehensive and fully automated test solution to verify Bluetooth® Low Energy physical layer functionality
Sep 06, 2023
This application note addresses the diverse possibilities of interoperability between Rohde & Schwarz power sensors and Rohde & Schwarz signal generators. All current and many legacy Rohde & Schwarz signal generators offer the capability of directly connecting power sensors. This enables power measurements without the need of a base unit or separate PC to display the readings. Furthermore, sensors can be used for special tasks like filling a user correction table or continuously controlling levels at crucial points in the measurement configuration.
Aug 31, 2023 | AN-No. 1GP141
The scope of this application note is to give a comprehensive guide on how the R&S®FSW signal and spectrum analyzer with the option R&S®FSW-K18 may be used to create a Hammerstein model for the R&S®SMW200A vector signal generator’s output stage. This model can then be applied to counteract inherent non-linearities and memory effects and improve the Error Vector Magnitude (EVM) at high output powers of the R&S®SMW200A vector signal generator.
Aug 28, 2023 | AN-No. 1GP139
Modern societies worldwide depend on the performance, reliability and security of critical infrastructures and networks. There is a plethora of “new verticals” such as manufacturing, warehouse, mining, ports or other critical infrastructure, just to name a few. These “new vertical” use cases all have one common requirement: the mobile network needs to provide a superior performance compared to a commercial mobile network. In such environments 5G brings new capabilities to build fast and secure campus or private networks tuned to higher performance, which can increase productivity and efficiency. To be successful in these business-critical use cases, the wireless networks need to be as reliable as the wired ones. This educational note describes the different test methods to be able to verify the superior network performance and to help finding root causes of potential problems limiting the performance. We distinguish between passive tests and active tests.
Aug 11, 2023 | AN-No. 8NT09
本应用指南介绍为 R&S®NGM200 或 R&S®NGU201 创建除电池模拟选件 NGM-K106 提供的标准模型之外的其他电池模型。这主要是为了使用内部 QuickArb 功能逐步使电池或可充电电池放电。然后可以使用快速数据记录功能 FastLog 记录电池的放电情况。记录的数据存储在 .CSV 文件中。此文件调整后可作为电池模型用于 R&S®NGM200 的电池模拟模式。为此,罗德与施瓦茨为开发人员提供工具,让他们的工作更加简单轻松。此工具可以计算电池模型需要的所有数据。注:应用指南 1GP130(电池循环工具)和 1GP136(电池模拟)介绍了更多高级工具。
7月 26, 2023 | AN-No. 1GP128
基于 R&S®CMX500 平台的测试解决方案
移动通信持续演进到具有重要特征的 5G 新空口 (NR) 时代。但是,语音呼叫服务仍然被视为移动设备的必备功能,全球网络运营商也在继续为用户提供语音服务。与 WhatsApp© 和 Teams© 等其他互联网流媒体 (OTT) 语音服务相比,NR 语音 (VoNR) 和 LTE 语音 (VoLTE) 保证服务质量,支持完善的切换机制和紧急救援呼叫,并且无需在手机上预装 OTT 应用。为了提供优质的语音服务并进一步增强优越的用户体验,移动设备在发布前需要进行音频测试。这需要考量不同的音频测试,例如声学、功能、性能和现场测试。本应用指南描述了性能测试,并重点介绍了通过移动设备的电气接口进行 VoNR 音频质量测量。测试解决方案以 R&S®CMX500 及其内置的 POLQA 算法为基础。
7月 26, 2023 | AN-No. 1SL401
罗德与施瓦茨解决方案——支持基于 VoIP 的现代电台与传统语音通信系统的互连,从而顺利实现逐步迁移。
7月 24, 2023
Active, high-impedance probes can be connected to spectrum analyzers, providing a practical and highly precise measurement solution to overcome an otherwise cumbersome RF testing issue. This application note provides information on how to use oscilloscope probes in RF measurements using spectrum analyzers.
Jul 04, 2023 | AN-No. 1EF116
面向生产和研发的综合性测试解决方案指南
小基站是一种紧凑型基站,和常规的宏基站相比体积更小、传输功率更低。小基站的覆盖范围相对较小,承载的用户量也更少。一般而言,小基站能够集成到现有的移动网络中。无线接入技术持续演进,小基站的作用也随之不断变化。在 2G/3G 时代,小基站被用于在极端情况下提供覆盖。在之后的 LTE 时代,基站网络不仅提供覆盖,还提供容量。小基站被用于根据需要提供附加容量,不额外增加频谱。在当下的 5G 时代,网络运营商采用关键的密集化策略来提供流畅一致的 5G 服务,这同样需要保障网络覆盖、容量和性能。对于需要部署 5G 毫米波 (mmW) 的应用,考虑到毫米波的传播特性,可以通过小基站有效增加基站密度。在本应用指南中,我们将探讨产品生命周期中的小基站测试,并使用无线电综测仪 R&S®CMP200 和 OTA 暗箱 R&S®CMQ200 重点针对拆分选项 6 讨论空口 (OTA) 环境中 FR2(频率范围 2,毫米波频段)的小基站被测设备 (DUT) 的生产测试解决方案。指南的第二部分将更加深入地介绍典型研发测试应用中使用的测试解决方案。
6月 19, 2023 | AN-No. 1SL395
汽车电子雷达对于高级驾驶员辅助系统 (ADAS) 至关重要,将有助于实现汽车行业的零事故、零死亡的净零目标。即使存在干扰,雷达传感器也必须探测到驾驶环境中的目标。R&S®AREG800A 汽车电子雷达回波发生器是雷达传感器抗干扰性测试解决方案的重要器件。
6月 15, 2023
In high-speed digital measurement applications, test fixtures are commonly used to connect devices under test to measurement equipment. Characterization, and analysis in the time and frequency domains that accounts for various constraints helps to remove the influence of these fixtures.
May 23, 2023 | AN-No. 1SL393
Next generation technologies in radar and satellite communication with high data rates call for innovative testing solutions to develop and manufacture RF components like voltage controlled oscillators (VCO). The R&S®FSPN phase noise analyzer increases efficiency and reproducibility of VCO characterization and phase noise measurements from lab to production.Voltage controlled oscillators are oscillators whose output frequency is controlled by means of an external tuning voltage, and they are used in a wide variety of electronic and RF applications like function generators, phase-locked loops including frequency synthesizers used in communication equipment. Different VCO design approaches yield different parameters and performance, and therefore it is important to measure or characterize VCOs under different conditions. This application note provides a short technical introduction to voltage controlled oscillators and explains the most common and the most important measurements made during the VCO characterization process.
May 17, 2023 | AN-No. 1SL386
本应用指南涉及 LCR 表 R&S®LCX100 和 R&S®LCX200 的测量精度。R&S®LCX100 和 R&S®LCX200 根据仪器设置和所测阻抗实时计算精度。计算结果显示在仪器显示屏下方。如果无测试仪器可用,或者在无被测设备的情况下确定特定测量阻抗下的测量精度,此精度计算工具可提供所需结果。本指南介绍了计算工具的背景知识,并说明了安装和运行程序的前提条件。所提供的安装程序可在电脑上安装此程序。
5月 11, 2023 | AN-No. 1GP138
验证开关转换器的稳定性,对于电源设计非常重要。频率环路和负载瞬态响应常用于确保开关转换器的稳定性。虽然频率环路响应在设计验证中日益重要,负载瞬态响应仍是一种常用方法。显示脉宽调制 (PWM) 信号在一段时间内的正占空比,还可以增强负载瞬态响应。现代示波器具备此功能,还有助于识别未知的转换器影响。
5月 09, 2023
Using R&S®ELEKTRA Migration Tool
The R&S®ELEKTRA EMC test software is the successor of the R&S®EMC32 EMC measurement software. Like the R&S®EMC32 EMC measurement software, the R&S®ELEKTRA offers a solution that controls complete EMC systems and automates measurements on equipment under test (EUT) that is being tested for emissions (EMI) and immunity (EMS) compliance. It has more features and test types compared to R&S®EMC32.As both software platforms use different file formats, R&S®EMC32 users who upgrade their existing software to the R&S®ELEKTRA platform need to perform a file conversion before migrating their data to the R&S®ELEKTRA platform. This is done by using the R&S®ELEKTRA Migration Tool, which is installed automatically with each R&S®ELEKTRA installation.This Application Note describes how to use the R&S®ELEKTRA Migration Tool (version 4.4 onwards) for converting the backup data into the XML format that can be interpreted by the R&S®ELEKTRA software. It also provides recommended conversion steps (Chapter 5) and troubleshooting tips (Chapter 6). For instructions on migrating the data using R&S®ELEKTRA Migration Tool below version 4.4, refer to the R&S®ELEKTRA user manual. For better user experience, we recommend using the latest software version for migration.This Application Note does not describe the steps to backup data using the R&S®EMC32 or R&S®ES-SCAN software. For procedures on how to do so, refer to their respective manuals.
May 04, 2023 | AN-No. 1SL396
How to configure generic devices in R&S®ELEKTRA
R&S®ELEKTRA is able to communicate with many devices. Still, it is impossible to integrate drivers for all devices. Hence, R&S®ELEKTRA offers the possibility to integrate any device by configuring a generic driver. The configuration file contains commands that translate the language of the device for R&S®ELEKTRA and vice versa.
May 04, 2023 | AN-No. 1SL398
In this document we will describe in detail how to configure and perform path calibrations with AMS32-K81 in an ATS1500C, using an AREG800A.
May 03, 2023 | AN-No. 1SL399
开发新的测量仪器时可能发生偶发性事件和错误,需要在所有设计阶段和分析中加以考虑。罗德与施瓦茨电源可以准确捕获此类偶发性事件和错误。
5月 02, 2023
电池是一种不同于理想电压源的动态能源。R&S®NGM-K106 电池模拟选件可在 R&S®NGM200/NGU201 上重建电池模型,其功能远超标准模型。
5月 02, 2023