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  • Applications

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Learn how to configure Rohde & Schwarz products to fit your application. Search our database by product, technology, or application to find relevant technical documents.

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How to do Measurements according to TS 34.121 in presence of the HS-DPCCH with the R&S®CMU200

With the extension of the 3GPP FDD system to include HSDPA, the HS-DPCCH has been added as a new code channel in the uplink. This Application Note describes the transmitter measurements provided by the CMU200 to perform the transmitter measurements defined in TS 34.121 in presence of the HS-DPCCH. CMU200 receiver measurements according to TS 34.121 that measure the throughput and the CQI reporting are described. Subject to change – T. Braun, November 2005 - 1CM62

25-Nov-2005 | AN-No. 1CM62

Pulsed RADAR signal generation and measurements

Current Radar development is focusing the area of signal processing. This is taken into account by this educational note, where the R&S®SMW / SMBV instruments on the transmitter side and R&S®FSW / FSV instruments on the receiver side are combined to a closed loop Radar system, performing radar detection by means of pulse compression and digital signal processing. Appropriate Rohde & Schwarz sofware tools for such applications are described as well as the interface between the tools and the test instruments. Target reader group are engineering students who want to perform tests using pulsed or chirped signals.

20-Nov-2014 | AN-No. 1MA234

Precise measurement of complex electric impedance with swept frequency, test signal level and DC bias

The impedance of real-world passive components depends on frequency, signal level and DC bias. This has to be taken into account during circuit design. The R&S®LCX LCR meter is ideal for measuring these dependencies. The R&S®LCX sweep tool is an application program for conveniently performing such sweeps and displaying the results on charts.

17-Mar-2022

Characterization of an amplifier with the combination of network and spectrum analysis

The general characterization of complex DUTs such as amplifiers requires the measurement of several parameters. Some may require more than one test device or expensive equipment. Thanks to its versatility, the R&S®ZNL is an economic solution that can characterize a variety of DUTs both via network analysis and spectrum analysis.

17-Dec-2021

Wideband mm-Wave Signal Generation and Analysis

Generation of wideband digital modulated signals in V-band and above is a challenging task and typically requires a set of multiple instruments. This application note aims at simplifying the task and looks into the analysis part as well. Latest signal and spectrum analyzers like the R&S®FSW67 and R&S®FSW85 are first to allow use in V-band up to 67 GHz and E-band up to 85 GHz respectively without external frequency conversion. Up to 8.3 GHz of modulation bandwidth can be covered using the R&S®FSW-B8001 option. Millimeter wave use of analyzers ranging from 26 GHz up is shown. Application note 1MA217 describes V-band signal generation and analysis up to 500 MHz modulation bandwidth. This application note expands modulation bandwidth up to 2 GHz and covers both V- and E-band examples.

18-Jun-2015 | AN-No. 1MA257

How to use harmonic mixers with different R&S®FSW bandwidth options

The R&S®FSW offers a variety of different bandwidth options and makes it possible to combine these with external harmonic mixers to enlarge the analyzer’s frequency range up to 325 GHz. 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

Simulation of BCCH Channel of GSM/PCN Base Station with Signal Generator SME

Propagation measurements are indispensable in the planning of digital, cellular mobile radio net-works. To find the optimum sites for the base stations, a mobile test transmitter system simulating the base station is operated from a number of possible locations. The test receiver system is accommodated in a vehicle, which is driven along a test route to perform measurements. The parameters measured, such as level, bit error rate or channel impulse response, provide information on the coverage within the cell. The main problem is to minimize interference caused by multipath propagation in the reception area. The SME offered by Rohde & Schwarz is a universal test generator that can be used as the core of a test transmitter system. The SME generates the GMSK-modulated signals required for GSM propagation measurements in line with the rele-vant standards. Thanks to its low weight of 17 kg it can be carried even to remote sites. Fitted with the new optional DM Memory Extension (SME-B12, in the following referred to as XMEM), the SME is able to store data sequences of up to 8 Mbit which are long enough for receiver measurements with test mobile stations. A suitable test receiver system is for instance a test mobile station for measuring level and bit error rate and the Impulse Response Analyzer PCS from Rohde & Schwarz for measuring the channel impulse response. The present Application Note describes how the XMEM can be loaded with suitable data (test sequence) by the GSM Radiocommunication Test Set CRTP from Rohde & Schwarz and how the SME has to be adjusted for GMSK modulation of these data. First, however, an overview is given of all functions of the XMEM and their operation supplementary to the Operating Manual. Finally, it is explained how the XMEM data can be transferred between PC and SME via the IEEE-488 or RS-232 interface.

01-Jul-1999 | AN-No. 1GPAN14

Understanding oscilloscope ENOB Values

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

Enabling smart macro network enhancements

Rohde & Schwarz mobile network testing solutions enable operators to efficiently increase network capacity via hardware-related, capacity-enhancing features such as antenna tilt optimization, carrier aggregation, 4x4 MIMO and 6-sector sites.

09-Aug-2016

Measurement of residual phase noise of amplifiers at 80 GHz using interferometric measurement technique

This paper describes the measurement of additive/residual phase noise of power amplifiers or multipliers for example for automotive RADAR sensors at 80 GHz using the interferometric measurement approach in combination with a phase noise and VCO tester R&S FSWP. The setup provides a way to characterize the additive/residual phase noise of amplifiers down to -150 dBc/Hz at 100 kHz offset even in the microwave range at 80 GHz.

11-Sep-2024 | AN-No. 1EF117

Quick and efficient troubleshooting with the R&S®Scope Rider

Signal faults and anomalies can cause electrical and electronic systems to fail. Especially in the field, these errors can lead to system downtimes and produce high costs. Consequently, finding them quickly and efficiently as well as identifying their source are crucial.

30-Dec-2015

Antenna Measurements, RCS Measurements and Measurements on Pulsed Signals with Vector Network Analyzers R&S®ZVM, R&S®ZVK

This application note describes the suitability of the R&S®ZVM and R&S®ZVK as multichannel microwave receivers for antenna measurements and RCS measurements including measurements on pulsed signals. Application examples describe the measurement possibilities on pulsed signals using the R&S®ZVM/ZVK as stand-alone units. In addition, various R&S®ZVM/ZVK-based antenna measurement systems of the March Microwave company are presented in detail.

10-Sep-2004 | AN-No. 1EZ52

Common mode distortion of wide-bandgap power electronics probing

In an ideal scenario, a probe accurately transmits a signal from the device under test (DUT) in its original form with no alterations. Differential probes are designed to eliminate common-mode (CM) distortion by cancelling out identical signal artifacts on each socket relative to earth. In practice, issues such as poor CM rejection, frequency response degradation and signal distortion can compromise signal integrity, particularly in high-speed power applications where signal fidelity is crucial.

25-Nov-2024

Simplify railway field maintenance with R&S®Scope Rider RTH user apps

Oscilloscopes are basic everyday instruments for engineers and electricians. Maintenance tasks, however, sometimes require very specific measurements that are not available as standard functionality or are difficult to set up manually. With the R&S®RTH-K38 user scripting option, engineers can now design their own measurement function and a simple user interface. This paper describes how to use this unique feature for railway maintenance work.

06-May-2020

Measurements on CD Players using the Audio Analyzers UPL or UPD and the Audio Test Disc UPA-CD

To analyse the quality of CD players, lots of measurements have to be done. This application note presents a program, which combines these measurements to an automatically running sequence and gives a printout of the results. A test CD is used for generating the test signals. Here the Audio Test Disc UPA-CD from Rohde & Schwarz is used, which holds all required signals in a sequence permitting automatic measurements to be carried out, without the need of controlling the CD player. In addition, this application note explains the measurements and informs about the different standards.

16-Feb-1998 | AN-No. 1GA21

Double frequency range for R&S Signal Generators

Leaving aside the microwave generators, the present line of Rohde & Schwarz products comprisessignal generators up to 1 GHz (SMX, SMG), up to 2 GHz (SMH, SMGU), up to 3 GHz (SME, SMT) and up to 4.3 GHz (SMHU). For applications at higher frequencies, all signal generators can also be operated with an external passive frequency doubler. This extends the range of possible applications up to 8.6 GHz. Some degraded specs regarding level and modulation are described below. For people using the frequency range 3 to 6 GHz, the low priced combination SMT plus frequency doubler will mainly be interesting. Signal generator SMHU is useful for the frequency range up to 8.6 GHz. Especially the phase noise performance is excellent with this instrument. the required output signal. It should also be pointed out that the residual FM and the SSB phase noise will be 6 dB poorer as a result of frequency doubling.

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

State-of-the-Art Mobile Radio Measurements

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.The first, theoretical portion of this application note covers digital modulation and access methods in general. This is followed by an overview of the specific characteristics of the GSM standard as well as a summary of the most important mobile radio measurements.The second, practical portion of this application note covers some of these measurements in detail and runs through them step by step. These measurements can be performed by small groups in labs.The measurements and analysis of the results are intended to illustrate the theoretical portion of the application note and to deepen the reader's understanding.All measurements are performed using the R&S®CMW500 wideband radio communication tester and an off the shelf mobile phone.

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

Hints for Fast and Accurate Testing of GSM/EDGE Mobile Phone Power Amplifiers

Short measurement time in conjunction with high accuracy and repeatability of results are essential for efficient testing of mobile phone power amplifiers. Power Meter R&S®NRP, Signal Generator R&S®SMIQ, Spectrum Analyzers R&S®FSP/FSU/FSQ and Power Supply R&S®NGMO2 offer optimum characteristics such as high accuracy, fast settling speed and short measurement time in programmed mode. This application note concentrates on testing GSM/EDGE mobile power amplifiers and shows typical test setups and programming examples for Signal Generator R&S®SMIQ and Spectrum Analyzer R&S®FSP/FSU/FSQ, benchmark numbers and repeatability results.

29-Apr-2004 | AN-No. 1MA66

Integrated sensing and communication (ISAC) brings the future to life in 6G

Integrated sensing and communication (ISAC) is a pillar of 6G. Combining two different yet similar worlds – communications and environmental sensing – brings the future to life in the 6G era. The key ISAC drivers are beamforming with MIMO arrays, artificial intelligence (AI), modern modulation schemes and dense network infrastructure. The R&S®AREG800A automotive radar echo generator is a core element of a versatile research and development test solution in the ISAC community.

11-Mar-2024

CDMA2000®: Packet Data Testing with R&S®CMU200

The Rohde & Schwarz R&S CMU200 can be configured to perform packet data testing in a Mobile IP or Simple IP environment.This application note is intended as a guide to configuring the necessary Mobile IP or Simple IP network elements and R&S CMU200 instrument.

25-Apr-2007 | AN-No. 1CM51

Generation of Test Signals acc. ISO 14708 for Testing of Cardiac Pacemakers

This application note describes how to generate test signals with Rohde & Schwarz signal generators of the R&S® SMx family (R&S®SMA100A, R&S®SMF100A, R&S®SML, R&S®SMT, and R&S®SMIQ) to perform interference testing on implantable medical devices using a small application software.

15-Jul-2009 | AN-No. RCS0812-0065

HSDPA - Challenges for UE Power Amplifier Design

This Application Note describes the HSDPA uplink channel structure. Challenges for UE power amplifier design are outlined, and guidelines how to use R&S measurement equipment for testing UE power amplifiers are provided. An outlook on High Speed Uplink Packet Access (HSUPA) and the impact of HSUPA on the uplink channel structure is given.

11-Jul-2011 | AN-No. 1MA84

802.11ac Technology Introduction

This white paper provides a brief technology introduction on the 802.11ac amendment to the successful 802.11-2007 standard. 802.11ac provides mechanisms to increase throughput and user experience of existing WLAN and will build on 802.11n-2009.

23-May-2012 | AN-No. 1MA192

802.11 Packet Error Rate Testing

When measuring the performance of 802.11 wireless LAN compatible receivers, Packet Error Rate (PER) tests are the method of choice today. This application note describes a simple way to conduct PER tests using signal generators on any 802.11 device, independent of their physical layer design (11b, 11a or 11g). The application software works with standard Windows™ drivers on any card independent of manufacturer. No additional hardware specific software is needed. Easy setup of the source signal is included with direct upload to an SMIQ or AMIQ.

09-Jan-2012 | AN-No. 1GP56

Trigger on radar RF pulses with an oscilloscope

Analyzing RF pulses is a key aspect of pulsed radar applications, e.g. in air traffic control (ATC), maritime radar or scientific measurements of the ionosphere. Analyzing the envelope and the modulation of the pulse is essential, because they contain important information to characterize the application. The R&S®RTO and R&S®RTP oscilloscopes are capable of triggering precisely on a pulse as a prerequisite for time domain and frequency domain analysis. This document describes the use of the R&S®RTO and R&S®RTP to trigger exactly on pulses in preparation for further in-depth measurements such as RF pulse measurements on an ATC signal.

13-Mar-2019

CDMA2000 1xRTT/1xEV-DO Hybrid Mode Testing

This application note is intended as a guide to configuring the R&S®CMU200 instrument for CDMA2000 1xEV-DO / 1xRTT Hybrid Mode testing.

01-Oct-2007 | AN-No. 1CM65

Method of Implementation (MOI) for USB Type-C to Type-C Cable Assembly Compliance Tests

This application note describes Methods of Implementation (MOI) for precise, fast, and error-free compliance testing of USB Type-C to Type-C cable assemblies supporting USB4 Gen3, USB4 Gen2, USB 3.2 Gen2, USB3.2 Gen1, and USB2.0.

30-Nov-2023 | AN-No. 1SL405

Faster characterization of 5G RF frontends

More frequency bands and larger dynamic ranges increase the number of test points required in characterization and production of the latest RF frontends (RFFE). Actively managing test time and cost while maintaining quality is more important than ever before.

08-Jun-2020

Verify O-RAN radio units

O-RAN makes radio access networks more open, disaggregated and flexible. O-RUs need to comply with 3GPP and O-RAN standards. Automation is crucial for extensive O-RAN conformance testing since O-RAN network elements are asynchronously released.

08-May-2024

Measurement Setup for Phase Noise Test at Frequencies above 50 GHz

With recent enhancements in semiconductor technology the microwave frequency range beyond 50 GHz becomes more and more attractive especially for wideband communication applications like 802.11ad, microwave links or automotive RADAR. Low phase noise is essential for these applications to work properly. Accurate measurement of phase noise is needed to improve the performance. However, test setups at these frequencies become difficult, especially when cross correlation of two receive paths is needed to suppress additional phase noise added by the local oscillators or mixer stages. Two external harmonic mixers in combination with a commercially available phase noise tester are used for phase noise analysis. Signal sources with frequencies up to 500 GHz can theoretically be measured with this setup.

05-Feb-2018 | AN-No. 1EF101

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Rohde & Schwarz (Australia) Pty Ltd
Rohde & Schwarz is striving for a safer and connected world with its leading-edge solutions. Committed to innovation for more than 90 years, the independent technology group acts long-term and sustainably, making it a reliable partner to its industry and government customers worldwide. Rohde & Schwarz (Australia) Pty Ltd was established in 1981. The company is 100% owned subsidiary of Rohde & Schwarz GmbH, Munich, Germany.
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