9014 Results
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
Today’s infotainment units offer a wide range of features to truly embody the concept of the connected car.
14-Jun-2018
It is extremely important to test the application level functional performance of home automation products in the presence of interference.
11-May-2020
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
Automotive radar sensors are safety-relevant and have to be comprehensively tested for reliable functioning. The R&S ® AREG100A automotive radar echo generator is a versatile instrument for stimulating radars in the 24 GHz ISM band and in the 77 GHz and 79 GHz frequency bands. Together with the R&S ® ATS1500A shielded chamber, it offers a compact solution in a minimum footprint – perfect for lean production environments.
06-Aug-2018
WLAN Tests According to Standard 802.11a/b/g
28-Jul-2004 | AN-No. 1MA69
Limit Checking with the Audio Analyzers UPL and UPD
04-Jun-1998 | AN-No. 1GA33
LabVIEW™ SNMP Programming for the R&S<sup>®</sup> DVM, R&S<sup>®</sup> DVQ and R&S<sup>®</sup> ETX-T Made Easy With the Viodia™ SNMP Toolkit
18-Oct-2007 | AN-No. 7BM70
FSH4Remote is a free-of-charge program for connecting the R&S FSH4/8 handheld spectrum analyzer or the R&S FSC spectrum analyzer to a remote computer, and for providing remote control of the functions from the computer.
09-Feb-2012 | AN-No. 1MA180
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
White Paper: Implementation of Real-Time Spectrum Analysis with R&S FSW and R&S FSVR
20-Mar-2015 | AN-No. 1EF77
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
WiMAX - Generating and analyzing 802.16-2004 and 802.16e-2005 signals
10-Jul-2006 | AN-No. 1MA97
This document describes how a Windows®-based R&S® T&M instrument is remotely operated by an Apple iPad as if working on it locally.
28-Mar-2013 | AN-No. 1MA216
Software tool for fast and repeatable optimization of signal analyzer RF front-end settings
The signal conditioning in the RF front-end of signal analyzers is crucial to achieve the best performance with respect to image-suppression, noise-floor, dynamic range and other RF-key parameters.Precise signal levelling is especially important for complex measurements like Error-Vector-Magnitude (EVM). To minimize the measurement uncertainty from test system contributions over a wide range of different levels, the RF front-end needs to be adapted continuously according to the signal characteristics, signal power and frequency - ideally using an automatic levelling algorithm.This document describes the approach of a waveform specific, on-site characterization of the signal analyzer: For each waveform and frequency of interest, the instrument is evaluated in a first step. With this additional data, a fast and repeatable auto-levelling can be performed during the actual measurement.
24-Jan-2022 | AN-No. 1EF111
R&S SFU & R&S WinIQSIM™ Function and Uses of the Arbitrary Waveform Generator (ARB)
19-Dec-2006 | AN-No. 7BM57
Generate OneWebcompliant signals for receiver tests
24-Apr-2018
This application note highlights RF measurement challenges and introduces Rohde & Schwarz equipment required for RF characterization.
08-May-2017 | AN-No. 1MA275
Production Tests on ICO User Terminals with SMIQ and FSE/FSIQ
08-May-2000 | AN-No. 1MA23
The R&S®Pulse Sequencer software offers a powerful mechanism to model sequences that are often required for meaningful radar receiver test cases. The sequences can consist of many individual elements, such as pulses defined by the software or imported waveform segments.
03-Oct-2017
Due to their high phase noise sensitivity, phase noise analyzers are the instruments of choice for these tests.
08-May-2018
This application note describes methods using an R&S®ZVA network analyzer to accurately measure all the key parameters of frequency converters.
30-Apr-2015 | AN-No. 1MA224
The R&S®FSW signal and spectrum analyzer facilitates swept spectrum analysis of next generation SARs with true preselection, finer range resolution and image rejection.
16-Apr-2021
Converting Existing Waveform Files from R&S AMIQ or Binary into R&S SMU200A or R&S AFQ100A Format
18-Jun-2009 | AN-No. 1GP64
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
The amendment 802.11ad to the WLAN standard defines the MAC and PHY layers for very high throughput (VHT) in the 60 GHz range. This application note provides a brief examination of key 802.11ad parameters, describes the required measurements and test setups and contains several important recommendations for over-the-air (OTA) measurements.
17-May-2017 | AN-No. 1MA260
This document describes the direct test mode mechanisms for testing Bluetooth Low Energy devices and explains how the direct test mode connection is established. The R&S CMW uses a USB port for the direct test mode connection while the Equipment under Test (EUT) may provide a USB port, a serial port or even a 2-wire UART interface for this purpose. Installing or assigning the right driver for the EUT is the main configuration task on the R&S CMW. For EUTs with USB port, the R&S CMW provides a Bluetooth Low Energy USB driver which has to be assigned to the connected EUT.
14-Dec-2016 | AN-No. 1C105
The document gives an overview and user guide about a link budget calculator for the main components of a basic OTA system. Accomopanied by an Excel sheet containing the Link Budget Calculator.
19-Mar-2019 | AN-No. 1EF104