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  • T&M solutions for software defined radios (SDR)

    This document provides an introduction to SDR as used for military radios and presents the relevant T&M solutions offered by Rohde & Schwarz.

  • Measurement Characteristics of an Automotive LED Driver Based on a Hybrid Controller

    This application note describes different measurement techniques and methods for an automotive lighting module based on a hybrid controller design. Of course, a lighting module in such an environment has to fulfil requirements according to the automotive standard, which is typically a relatively high-level standard compare to the industry standard. The oscilloscope is a perfect tool for this application to verify the set of requirements because time domain signals (analog and digital) are present in the whole design. Furthermore, measurements in the frequency domain have to be performed, which a modern oscilloscope can fulfil. In addition to the oscilloscope, a programmable power supply supports the measurement in several measurements. The set of requirements are the main reason why a hybrid controller from Microchip is a great choice for this design because it provides tremendous analogue and digital capabilities. The hybrid controller provides beside the analogue functions like an operational amplifier digital functions like analog-to-digital converter and interface functions like UART, CAN or LIN to interact with other systems. The programmable software part is hosted in the digital part. The digital part of the controller implements the communication interface and provides status information to the outer system controller. The light source itself has to avoid any flicker and shall be capable to dim to different lighting levels. Wide input voltage variations and efficiency have to be taken into account during the design of a converter dedicated for automotive applications. Nevertheless, the measurement considerations presented with the design are valid and applicable in other professional lighting industries as well.Thanks to Mr. Andreas Reiter and Mr. Milan Marjanovic from Microchip who provided us with hardware and software and their great expertise to create this application note.

  • 16-bit high definition oscilloscopes for accurate measurements in electric and hybrid cars

    The power efficiency of the drive electronics is a key parameter when developing electric drive systems. The conduction loss of the electric drive electronics is of special interest. One important parameter for determining the conduction loss is the RDS(on) of the MOSFET. When a switching MOSFET is off, it has a high drain-to-source voltage, but when it is turned on, the voltage drops to just a few hundred millivolts. A highresolution oscilloscope is needed to measure these low voltages. Probe compensation and correct probing are also vital for accurate RDS(on) measurements.

  • Safe debugging of embedded power supplies

    Embedded power supplies combine traditional power supply components with multiple sensors, processing and control logic as well as digital communications interfaces. Test equipment for debugging requires isolated input channels for measurements of hazardous voltages. Additional digital channels support the analysis of digital signals, while trigger and decode capabilities are essential for time-correlated monitoring of serial protocol-based communications interfaces.

  • Debug standard and proprietary serial buses in aerospace and avionic systems

    The R&S®RTE and R&S®RTO oscilloscope families from Rohde & Schwarz provide an in-depth tool for debugging custom and off-the-shelf serial buses for the avionics and aerospace industries.

  • Testing IoT designs with the R&S®RTO2000

    Focus RF Signal Analysis

  • Project your oscilloscope screen with display over LAN

    The R&S®RTB2000 digital oscilloscope lets you share your scope’s display with any computer/projector via LAN or Internet. The oscilloscope comes with an RJ-45 Ethernet jack and a built-in web server (as standard). The screen is displayed via a direct connection to a PC, via LAN or over the Internet.

  • Importance of deep memory in oscilloscopes

    Deep memory in an oscilloscope ensures that long waveforms are captured with high resolution right down to the details thanks to a high sustained sample rate. Users can be confident that they are not ‘missing anything’. They benefit from viewing longer periods of time and quickly finding signal anomalies or important events.

  • Comparison of jitter measurements in the time and frequency domain

    When analyzing the robustness of data transmission systems, jitter is a key indicator. It is recommended to use jitter measurement instruments for both the time and frequency domain in order to differentiate between fast and slow moving artifacts.

  • Measuring power quality in electrical installations

    RTH - Measuring power quality in electrical installations

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