12 Results
From designing a test setup to performing accurate measurements
Double-Pulse testing is a standard test-method used in power electronics design. Accurate measurements require a careful design of the test setup and the selection of the right measurement instruments. This application note discusses important aspects of double-pulse test setups as well as how to perform accurate measurements.
22-Mar-2021 | AN-No. GFM347
Almost every switched-mode power supply (SMPS) needs an EMI (Electro Magnetic Interference) input filter to suppress any disturbances of the SMPS on the power lines. This requirement having an input filter in the design ensures that no negative effect will occur in other parts of the systems connected to the power lines. Therefore, the design and the validation of the input filter is a major task during a typical power supply design. The conducted emission (CE) test according to a specific standard is a suitable and a common validation method to release the design at the end of the development cycle. Nowadays, this conducted emission test will be performed as pre-compliance test during the development phase in the lab as well. In this case, the designer will obtain an early feedback whether the design has to be optimized regarding any disturbances present on the power lines. In most cases, the designer has to adjust the input filter to obtain a more effective suppression of disturbances generated by the SMPS. However, the designer needs to know details about the noise spectrum to optimize the input filter as effective as possible. In addition to magnitude and frequency information of the noise source, it would be very helpful to know whether the noise is generated by a common mode source or by a differential mode source. During the standard conducted emission test, common and differential mode noise is a combination in the measurement results and thus not possible to gain deeper insights. This document will describe a method to separate common-mode and differential-mode separation using two oscilloscope channels. This separation approach works without any additional hardware component like a noise separator. The designer will be able to distinguish between common-mode (CM) and differential-mode (DM) noise. This additional information about the dominant mode provides the capability to optimize input filters very efficiently.
17-Sep-2020 | AN-No. GFM353
R&S®VISA is a standardized software library that allows fast communications over diverse interfaces with a wide variety of T&M instruments that are detected on the network from PC applications. R&S®VISA also includes a trace tool that simultaneously monitors communications between multiple applications and T&M instruments, and permits targeted analysis with the aid of efficient filters.
26-May-2020 | AN-No. 1DC02
This application note describes Battery Life Measurements with the R&S®RT-ZVC02/04 Multi-Channel Probe. The measurements are described with the use of an oscilloscope. The R&S®RT-ZVC Multi-Channel Probe can be used with R&S®RTE1000, R&S®RTO2000 or R&S®RTP.
17-Jan-2019 | AN-No. 1TD07
Versatile Software Tool for Rohde & Schwarz Instruments
RSCommander is a versatile software tool for a wide range of Rohde & Schwarz spectrum-, network analyzers, signal generators and oscilloscopes. It allows for automatic instrument discovery, making screenshots, reading traces, file transfer and simple script creation.
24-Dec-2017 | AN-No. 1MA074
This Application Note gives 10 useful Tips & Tricks for the users of Rohde & Schwarz attribute-based instrument drivers. It is recommended for the first-time LabVIEW users as well as for the experienced programmers.
30-Jan-2017 | AN-No. 1MA228
This paper explains how to use the Rohde & Schwarz IVI.NET instrument drivers in Visual Studio environment from the prospective of an occasional C# programmer in need of automating a measurement task.
31-May-2016 | AN-No. 1MA268
This application note describes the configuration of a Miracast wireless video transmission system and how to measure the delay times between a smart phone or tablet (source) and a television / monitor (sink) display. The accompanying software for Windows 7/8/10, Mac OS X 10.x and MATLAB additionally allows to measure the delay until the video signal is transmitted over the air and optionally until it is available on the HDMI cable of an external Miracast receiver.
01-Oct-2015 | AN-No. 1MA250
This application note describes how to use the mask and limit test features of the R&S®RTO, R&S®RTE and R&S®RTM Digital Oscilloscopes for EUT monitoring of signal forms, jitter etc. with the R&S®EMC32 Measurement Software. The mask test function allows autonomous characterization of digital signal integrity during EMS tests. R&S®EMC32 software records violations of userdefined limits or mask templates and evaluates the immunity threshold at frequencies of critical electromagnetic susceptibility.
20-Apr-2015 | AN-No. 1MA242
With the R&S®RTO-K17/RTE-K17 High Definition Option the user will see more signal details with up to 16 bit vertical resolution.In combination with the superior analog front end of the R&S®RTO and R&S®RTE, the user has a versatile instrument in his hands to analyze a wide range of applications. From Switch Mode Power Supplies to Radar RF, the user can inspect all with one scope.
13-Apr-2015 | AN-No. 1TD06
This application note introduces the IVI High Speed LAN Instrument Protocol (HiSLIP) and outlines its features. HiSLIP is the successor to the VXI-11 LAN remote control protocol. This document also describes guidelines for using this protocol.
12-Nov-2014 | AN-No. 1MA208
Radar test systems are essential in research, development, production and maintenance of radar systems. Most test systems measure single radar parameters or substitute components, but do not test the entire system including the antenna frontend. This application note presents a solution for testing the complete radar system which transmits any kind of radar signal by generating radar echo signals with arbitrary range, Doppler frequency and Radar Cross Section in response. Hence, arbitrary virtual targets are generated making it possible to perform real-time tests on many kinds of aerospace and defense or commercial radar systems.
30-Oct-2014 | AN-No. 1MA256