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DOCSIS has become the established standard for return channels when it comes to implementing interactive services in broadband cable networks. The quality of these signals is essential to network efficiency. The analysis can be done using the highprecision R&S®ETL, R&S®EFA and R&S®FSH3-TV TV test receivers that have proven themselves in the downstream. These T & M instruments can be quickly and easily configured for measuring the upstream.

13-Jul-2012

It is extremely important to test the application level functional performance of home automation products in the presence of interference.

11-May-2020

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

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

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

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

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

How To Demonstrate Improved ACLR Dynamic Range With FSU and Noise Correction

16-May-2002 | AN-No. 1EF49

This application note describes remote operation or monitoring of the signal and spectrum analyzers R&S® FSV3, R&S® FSV7, R&S® FSV13, R&S® FSV30 through a standard web browser.

15-Jan-2009 | AN-No. 1EF67

Program for Measurement Uncertainty Analysis with Rohde & Schwarz Power Meters

26-Jul-2001 | AN-No. 1GP43

CDMA2000 1xEV-DO Rel. B Non-Signaling Testing

29-Jun-2009 | AN-No. 1CM74

This application note presents a solution for testing the complete radar system by generating any kind of radar echo signals.

01-Aug-2016 | AN-No. 1MA283

This paper will discuss several measurement settings which affect measurement speed and provide suggestions on improving this overall speed.

08-Oct-2020 | AN-No. GFM354

WiMAX - Generating and analyzing 802.16-2004 and 802.16e-2005 signals

10-Jul-2006 | AN-No. 1MA97

Early wafer-level qualification of RF components ensures quality and saves money

14-Jul-2022

Description of 20 MHz demodulation bandwidth for level measurement with the R&S®EB500 monitoring receiver.

09-Oct-2012

Easy power sequencing and ripple noise analysis with MXO oscilloscopes

22-Apr-2024

CDMA2000^® Base Station Tests With the R&S^®SMU200A Vector Signal Generator and Rohde & Schwarz Spectrum Analyzers

15-Sep-2009 | AN-No. 1MA109

Simultaneous simulation of all important constellations and frequency bands makes the GNSS simulator in the R&S®SMW200A the perfect solution for testing your GNSS receiver in the lab.

11-Sep-2018

Measurement of Transient Responses in AGC Circuits using the Audio Analyzers UPL and UPD

04-Jun-1998 | AN-No. 1GA32

This application card will give some guidance as to the possible combinations of bandwidth options and mixers in conjunction with the needed IF frequencies.

16-Jun-2020

You need a flexible clock source that can provide the signals needed for today’s and tomorrow’s designs with minimal jitter and noise as well as best spectral purity.

03-Aug-2017

Selecting Your Next Oscilloscope:

If you are selecting your next oscilloscope and want more insight on how to understand ENOB values measured and published by oscilloscope manufacturers, this document is for you. The effective number of bits (ENOB) is a way of quantifying the quality of analog to digital conversion. A higher ENOB means that voltage levels recorded in analog to digital conversion are more accurate. Understanding oscilloscope vendor-supplied ENOB values can be complex. This document focuses on interpretation of measured ENOB results made on oscilloscopes rather than the math behind ENOB calculations.

21-Jun-2024 | AN-No. 1TD12

An offline AC/DC switching converter has no separate bias power supply that provides power to the control integrated circuit itself. Here, an auxiliary primary winding and discrete components are added to supply power to the control circuit. Verifying this circuitry is essential and requires accurate and detailed signal level and timing measurements. The startup sequence takes a long time, which needs to be taken into consideration in the measurement and requires an instrument with sufficient memory.

23-Nov-2022

Accessing Measurement Data and Controlling the Vector Network Analyzer via DDE

31-Jul-1998 | AN-No. 1EZ33

Remote Emulation with the R&S SMBV100B Signal Generator

30-Sep-2019 | AN-No. 1GP121

RF system noise contributions define receiver capabilities and sensitivity. The noise figure measures how the critical components affect the signal.

28-Jan-2022

Double frequency range for R&S Signal Generators

20-Apr-1998 | AN-No. 1GPAN03

This document describes WLAN tests which rely on communication (signaling) between R&S CMW and device under test (DUT) and on transmission of packet data over WLAN. On the R&S CMW side the WLAN Signaling application is required, for some tests also the Data Application Unit (DAU). The test principles and the necessary settings are explained and background infor-mation is given. Step-by-step procedures are provided for the main configuration tasks.

08-Feb-2016 | AN-No. 1C107

Generation and Analysis of ZigBee™ IEEE802.15.4 signals in the 2.4 GHz band

21-Jun-2007 | AN-No. RSI03

The topic of this application note is mobile phone measurements – in theory and in practice. It discusses measurements according to the most common standard in use today, GSM.

22-Aug-2014 | AN-No. 1MA231