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Provides the basic information required for remote control connections via SCPI.

English - 2025. 7. 16.

This application note is about measurement accuracy of the LCR-Meters R&S®LCX100 and R&S®LCX200. On the R&S®LCX100 and R&S®LCX200, the accuracy is calculated in real time, depending on the instrument settings and on the measured impedance. It is displayed on the lower part of the instrument display. If no test instrument is available, or information about the measurement accuracy at a certain measured impedance is sought without having a DUT at hand, this accuracy calculation tool provides the desired values.The document explains the background of the calculation and the prerequisites for installing and running the program. The installer provided installs the program on your PC.

English - 2023. 5. 11.

This application note applies to DC power supplies R&S®NGL200, R&S®NGM200, R&S®NGP800, R&S®NGU201 and R&S®NGU401, as well as LCR meters R&S®LCX100 and R&S®LCX200. It provides an overview over ethernet-based remote services provided by the referenced R&S® instruments. These services comprise an instrument web page, VNC remote control and FTP file transfer between the instrument and a remote computer. The application note gives instructions on how to set up the instrument and the remote computer in order to be able to utilize these services.

English - 2022. 5. 19.

The LCR meters R&S®LCX100 and R&S®LCX200 precisely measure the complex impedance and the resulting components values over a wide frequency range. Dynamic impedance measurements allow to perform these measurements while sweeping the test signal frequency or other parameters like test signal level and DC bias. This application note provides a PC-based software tool for comfortably setting the sweeps and displaying the results in numerous charts.

English - 2022. 3. 14.

Resistors, capacitors and inductors are the most basic components in electric circuits. It must be ensured that they work properly and accurately. Therefore, they need to be tested thoroughly during circuit design. This is usually done using LCR meters, which have become indispensable in the lab and in production. This application note looks at how to perform basic capacitor and inductor measurements accurately and reliably.

English - 2024. 2. 22.

Ideal inductors are assumed to have linear behavior, i.e. their properties should not depend on signal amplitudes or superimposed DC bias current. Real inductors often contain magnetic core material, in order to achieve higher inductance within an available volume. All magnetic core materials exhibit nonlinear behavior in the shape of hysteresis and saturation effects. Testing the properties of an inductor depending on test signal amplitude and DC bias current is therefore indispensable for the component characterization.With option R&S®LCX-K108, LCR meters R&S®LCX100 and R&S®LCX200 can superimpose DC bias current up to 200 mA. For higher DC bias currents, an external source is required. This external source can be connected in parallel if it has a sufficiently high impedance over the measurement frequency range.This application note explains how to connect an external DC bias current source, avoid risks and hazards, and perform corrections for optimum measurement accuracy.

English - 2026. 7. 6.

Korean - 2024. 4. 24.

Describes the assembly of the Rohde&Schwarz instrument of the R&S®NGP power supply series in a 19" rackmount-kit.

English - 2022. 3. 10.

A high frequency transformer is a key component when designing isolated switching mode power supplies (SMPS). Leakage inductance is essential in the control of many design parameters including efficiency, maximum voltage rating for switching elements and EMI when it comes to designs using customized transformers. Accurate measurement of this parasitic element is mandatory. The R&S®LCX LCR meter is ideal for this challenging measurement task.

English - 2022. 2. 15.

This paper describes the characterization of aluminum electrolytic capacitors specifically used in AC-DC power converter applications. It will be discussed why this capacitor technology is critical regarding lifetime and why it cannot be substituted simply by any another capacitor technology. Different aging effects of the capacitor will be discussed. Usage of the capacitor in different AC-DC converter topologies will be presented. Simulation circuits will be used to analyze the capacitor in more detail before suitable measurements will be performed to demonstrate a real example of a switching-mode power supply (SMPS).After the introduction into the aluminum electrolytic capacitor basics and theory, this paper will also present all important and possible measurements of capacitor parameters, like capacitance, equivalent series resistance (ESR) and ripple current. This includes in-circuit measurement which can be performed with an oscilloscope. An LCR-bridge is used to obtain high accuracy measurements in addition. A comparison between the two measurement methods will be presented. Furthermore, the required measurement hardware for the in-circuit measurements and the bridge measurement will be discussed and presented.Lastly, two different lifetime calculation methods are presented and a real example is used to compare the advantages and disadvantages of the different methods.Thanks to Mr. Frank Puhane from Würth eiSos GmbH & Co. KG who provided me with all aluminum electrolytic capacitor samples including the prepared capacitor with build-in temperature sensors to perform all measurements. Furthermore, his great expertise was very beneficial and helpful to create this premium application note.

English - 2023. 2. 7.

English - 2025. 6. 3.

Korean - 2025. 6. 3.

Ethernet based remote services for Rohde & Schwarz DC power supplies and R&S®LCX LCR meters

English - 2023. 4. 27.

English - 2024. 4. 24.

Provides information on security issues when working with the R&S®LCX LCR meter in secure areas.

English - 2025. 6. 4.