The R&S®ZNB vector network analyzer together with the R&S®HF907 double-ridged waveguide horn antenna provides fast and accurate TD SVSWR measurements in line with ANSI C63.25.

06-Aug-2018

The R&S®SMA100B offers outputs for the analog input signal of the ADC as well as the clock input signal in one single instrument - both with outstanding signal purity.

11-Jan-2021 | AN-No. 1GP66

MIPI D-PHY is a low-power, cost-effective physical layer interface, essential in mobile devices and advanced technology systems. It's a high-speed, source-synchronous interface used in smartphone cameras, smartwatch displays, drones, in-car entertainment, automobile cameras, and radar sensors. This application note explores MIPI D-PHY's features, functionality, and testing practices for device compliance, addressing common issues. It highlights Rohde & Schwarz's equipment for ensuring compatibility and solving issues with MIPI D-PHY, aligned with MIPI D-PHY specification version 2.5.Developed by the MIPI Alliance, D-PHY connects cameras and displays to a host processor via CSI-2 or DSI protocols. It features a master-slave, asymmetrical design for reduced link complexity. Key aspects include a unidirectional clock, optional data signal directions, different data rates for half-duplex operation, point-to-point communication, and high-speed (HS) and low-power (LP) modes for data transfer and battery preservation. In HS mode, D-PHY uses differential signaling with specific impedance, while in LP mode, it operates in a single-ended manner with high impedance termination.The application note from Rohde & Schwarz provides insights into characterizing and debugging MIPI D-PHY, offering conformance verification with MIPI Alliance standards and protocol decoding options.

31-Jan-2024 | AN-No. 1SL410

This application note shows how to measure the phase accurately between several signals using vector network analyzers of the R&S®ZNA, R&S®ZNB and R&S®ZNBT families.

11-Jul-2019 | AN-No. 1EZ82

Measurement of Frequency Settling Time of Synthesizers and Transmitters

12-Feb-1999 | AN-No. 1MA15

This application note and associated application software may be used to conduct psychoacoustic speech quality evaluation for Voice over LTE (VoLTE) connections. The measurements are based on recommendations ITU-T P.862 and ITU-T P.863. The included software sequence performs decoder/encoder calibration, connection setup for the UE under test and subsequent speech quality analysis.

21-Feb-2014 | AN-No. 1MA204

Malware Protection Windows 8

16-Feb-2017 | AN-No. 1EB01

Frequency Range Extension of Spectrum Analyzers with Harmonic Mixers

05-Mar-1999 | AN-No. 1EF43

RF chipset verification for UMTS LTE (FDD) with R&S^®SMU200A and R&S^®FSQ

19-Dec-2008 | AN-No. 1MA138

This application note explains how to use the SMW for testing higher order MIMO systems by presenting different key applications.

24-Feb-2016 | AN-No. 1GP97

Usage of Data Reduction in R&S©EMC32-K10 EMI Auto Test Templates

16-Nov-2011 | AN-No. 1SP02

R&S CMWrun - Audio performance testing solution

20-Feb-2015

AutoCal: Automatic Calibration of Vector Network Analyzer ZVR

28-Jul-1998 | AN-No. 1EZ30

The first part of this educational note presents the applications for and the most important types of signal generators. This is followed by a description of the construction and functioning of analog and vector signal generators.

03-May-2016 | AN-No. 1MA225

How to performe fundamental FM measurements such as frequency response, balance, stereo crosstalk, total harmonic distortion (THD), dual frequency distortion (DFD) and spurious modulation.

10-Sep-2013 | AN-No. 7BM105

Reliable testing of HARQ feedback and UL timing adjustment on LTE eNBs with the R&S®SMW200A simplifies eNB performance testing and eliminates the need for test UEs

01-Jun-2016

Tests of Power Amplifiers for Single-Channel and Multi-Channel TD-SCDMA Base Stations

31-Jul-2007 | AN-No. 1MA103

Analyze near-field signals and reduce electromagnetic interference (EMI) on boards and modules with the R&S®SpectrumRider FPH and the R&S®HZ-15 near-field probes.

27-Jun-2016

Creating LabVIEW Drivers for the R&S CompactTSVP by Using GTSL Shared Library Import

28-Dec-2007 | AN-No. 1SP801

Today’s infotainment units offer a wide range of features to truly embody the concept of the connected car.

14-Jun-2018

T-Check Accuracy Test for Vector Network Analyzers utilizing a Tee-junction

04-Aug-1998 | AN-No. 1EZ43

Best practices for mobile network testing for business-critical applications

A best practice set of tests, KPIs and limits verify the performance of a business-critical private network for communicating machines.

13-Aug-2024 | AN-No. 8NT17

A step by step HOW TO guide to perform manual and automated wireless coexistence testing

At the end of the year 2020, there were over 20 Billion internet of things (IoT) products in the world operating using the licensed and unlicensed frequency bands. This growth trend is projected to keep steady over the coming years as more and more people adopt to a smarter and more connected lifestyle. This will result in a much busier and challenging RF environment than the one we have today. In order to understand the complexity of the RF spectrum, a white paper was published in 2021 from Rohde & Schwarz, which featured RF spectrum activity at multiple locations observed at different times of the day. The locations were selected based on population densities and the amount of known RF transmitters & their frequencies at those locations. It was also concluded that the ISM bands on average have higher channel utilization since most IoT devices take advantage of the unlicensed spectrum. The paper recommended, that while performing wireless coexistence testing, the test conditions should reflect the operational RF environment that the device is intended to operate in. Otherwise, the characterization of RF performance would only reflect ideal case which doesn’t exist in real world operation. Since it is not always possible to test all devices in the real world, relevant test methodologies need to be setup to replicate the real world as much as possible.This will help us get a better understanding of how the receiver of the RF device will behave under different RF conditions. It is also recommended to perform measurements in order to understand the behavior of the device in the future when the spectrum will get even more challenging. Therefore, a through characterization of the capability of the RF receiver to handle in-band and out-of-band interference signals in also of interest.In terms of regulatory compliance requirements for ensuring wireless coexistence performance, the ANSI C63.27 is currently the only published test standard that provides guidance on how to perform coexistence testing on devices. The test complexity is based up on risk imposed on the user’s health in the event of a failure caused by an or a plurality of interference signal. The standard also gives device manufacturers guidance regarding test setups, measurement environments, interference signal types and strategy, performance quality measurement parameters for physical layer using key performance indicator (KPI) and application layer parameters for end-to-end functional wireless performance (FWP).In this application note, the guidance provided by the ANSI C63.27-2021 version regarding test setup, measurement parameter and interference signal have been followed. It will give the reader a clear idea on how to configure standardized test instruments from R&S in order to generate the wanted signal as well as unintended interference signals and conduct measurement to monitor device performance in terms of PER, ping latency and data throughput.This application note provides step-by-step instruction on how to perform measurements using conducted and radiated methodology. Both manual and automated instrument configuration approach is explained in this document.The automation scripts are written using python scripting language and are available for download with this application note, free of charge. Official required to run the scripts are available on the PYPI database.

10-Nov-2022 | AN-No. 1SL392

DVB-T - Bursted Noise Signal Generation

08-Jul-2009 | AN-No. 1MA51

Interference hunting for critical infrastructure

11-Apr-2024

The battery life measurement solution for the R&S®CMW500 platform identifies which ECUs and which applications running on telematics units impact battery life.

23-Aug-2017

This application note explains how to measure the oscilloscope ENOB and shows results for the R&S®RTO for different settings.

13-May-2011 | AN-No. 1ER03

The numerous supply voltages of FPGAs, CPUs and DSPs need to be powered-up in a specific order to ensure reliable operation.

08-Oct-2018

Functionality testing of automotive infotainment devices - Application Card

19-Feb-2018

(E)GPRS Measurements with R&S CMU200 and CMUgo

07-Sep-2004 | AN-No. 1CM52