Rohde and Schwarz Gmbh & Co. Kg

Rolf Lorenzen

Gottfried Holzmann

Ralf Plaumann

Martin Oetjen

Werner Mittermaier

Moritz Harteneck

Brian Glover

Matthias Jelen

Heino Gerlach

Henry Gropp

Peter Wolanin

Anton Steinegger

Rudolf Schindlmeier

Falko Fiechtner

Max Winklhofer

Wilfried Dilling

Daniel Hank

Nirmalan Thiruvadivel

A measuring device for providing an angle of departure determining test signal to a device under test, is provided. The measuring device comprises a signal generator and a single output port. The signal generator is adapted to generate the angle of departure determining test signal, emulating an antenna array angle of departure determining signal, comprised of a plurality of individual array antenna signals, thereby emulating an angle of departure of the angle of departure determining test signal. The single output port is adapted to output the angle of departure determining test signal to the device under test.

Measuring device and measuring method for emulating an angle of departure determining test signal

A mobile radio testing device for protocol testing of a device under test is provided. The mobile radio testing device comprises a downlink path and an uplink path, wherein the uplink path comprises at least a first analysis mode and a second analysis mode. In this context, the mobile radio testing device includes a demodulation processing unit for analyzing signals from the device under test in the first analysis mode. In addition, the second analysis mode analyzes signals from the device under test without using the demodulation processing unit.

Mobile radio testing device and method for protocol testing

A test system and method of performing a run-time measurement for calibration of a device used for time-of-flight measurement are disclosed. The method comprises: providing a measurement device, a device under test and a directive component having three ports; connecting the directive component to a transmission port of the measurement device and a reception port of the measurement device; generating a signal by a signal generator; forwarding the signal to the directive component; receiving at least a response by a signal receiver; and determining a loop time indicative of the run-time between the directive component and the device under test as well as a time of internal processing of the device under test, wherein the loop time is independent of a signal processing time of a signal path between the measurement device and the directive component.

Method and test system for performing a run-time measurement

An arbitrary waveform sequencer device for playing a list of at least a first and a second arbitrary waveform file in a sequence is provided. The arbitrary waveform sequencer device comprises a list increment condition control unit configured to control an increment from the first to the second arbitrary waveform file as a function of an increment condition, and a transition control unit configured to control a timing of the increment.

Arbitrary waveform sequencer device and method

A testing front end module for testing a plurality of devices under test (DUT) includes a testing signal interface, a vector signal generator (VSG) coupled to the testing signal interface and configured to generate testing signals upon reception of testing routine signals from a remote controller via the testing signal interface, a vector signal analyzer (VSA) coupled to the testing signal interface and configured to receive testing response signals from a plurality of DUTs and to transmit the received testing response signals to the remote controller via the testing signal interface, a multiplexer/demultiplexer (MUX/DEMUX) coupled to the VSG and the VSA, the MUX/DEMUX being configured to multiplex the received testing response signals and to demultiplex the generated testing signals, and a test device interface coupled to the MUX/DEMUX and configured to couple the testing front end module to the plurality of DUTs.

Testing front end modules, testing methods and modular testing systems for testing electronic equipment

A method and a system for determining the amplitude and/or the phase of the output signal of a transmission link dependent upon the amplitude of the input signal (AM-AM and/or AM-PM characteristic) impresses a test signal (s(t)) on the transmission link, measures the response signal (e(t)) resulting from the test signal (s(t)) by amplitude and/or phase distortion in the transmission link and determines the amplitude response (|e(t)|) of the response signal (e(t)) and/or the phase responses (&#x3c6;(t), &#x3c6;(t)) of the test signal (s(t)) and of the response signal (e(t)) dependent upon the amplitude response (|s(t)|) of the test signal (s(t)). The amplitude response (|s(t)|) of the test signal (s(t)) consists of several first and second response segments with constant amplitude values over the duration (&#x394;T) of the respective first or second response segment.

Method and system for determining the amplitude and/or phase of the output signal for a transmission body depending on the amplitude of the input signal

A method and a system for determining the amplitude and/or the phase of the output signal of a transmission link dependent upon the amplitude of the input signal (AM-AM and/or AM-PM characteristic) impresses a test signal (s(t)) on the transmission link (), measures the response signal (e(t)) resulting from the test signal (s(t)) by amplitude and/or phase distortion in the transmission link () and determines the amplitude response (|e(t)|) of the response signal (e(t)) and/or the phase responses (&#x3c6;(t), &#x3c6;(t)) of the test signal (s(t)) and of the response signal (e(t)) dependent upon the amplitude response (|s(t)|) of the test signal (s(t)). The amplitude response (|s(t)|) of the test signal (s(t)) consists of several first and second response segments with constant amplitude values over the duration (&#x394;T) of the respective first or second response segment.

A method and a system for determining the dependence between several device-parameter values in each case of at least one device parameter of a mobile telephone () and at least one signal parameter of a signal transmitted and/or received by the mobile telephone () adjusts several device-parameter values within a mobile telephone () of at least one device parameter of the respective mobile telephone () for a given number of frequencies of the respectively transmitted and/or received signal, and measures the associated signal parameters of a signal transmitted and/or received by the respective mobile telephone (). All of the frequencies and the device-parameter values of at least one device parameter respectively associated with every frequency are present in the respective mobile telephone () at the start of the measurements.

Method and system for determining the dependence between device parameters of a mobile telephone and signal parameters

A process for determining a time lapse between a trigger signal and a start of a cyclic sequence of a pilot signal of a CDMA high frequency signal includes: simultaneously scanning and storing the trigger signal and the pilot signal; comparing the trigger signal with a trigger threshold to capture a time (t) to reach the trigger threshold; comparing the trigger signal with a trigger threshold to capture a time (t) to reach the trigger threshold; generating a CDMA baseband signal by transforming the CDMA high frequency signal into a complex baseband; correlating the CDMA baseband signal with a cyclic reference sequence to capture the time (t) up to the start of the cyclic sequence of the pilot signal; and subtracting tfrom tto determine the lapse in time.

Process for determining a time lapse between a trigger signal and a pilot sequence of a CDMA high frequency signal

A method and system for determining the average long-term is described, in which a short-term power of a segment of the input signal is determined and a data sequence is produced that is contained in the segment and with which the input signal is modulated. A reference signal is produced by modulation with the data sequence at a predetermined reference control factor of a modulator, in which a long-term power of the reference signal corresponds to the reference control factor, and a short-term power of the reference signal within the segment is determined. A correction value is determined by comparing the short-term power of the reference signal with the long-term power of the reference signal corresponding to the reference control factor; and the short-term power of the segment of the input signal is corrected based on the correction value in order to obtain the long-term power of the input signal.

Method for the determination of the average long-term power of digital modulated signal

A measuring device ( ), for measuring the spectrum of a measured signal in several neighboring channels ( ) of a working channel ( ), includes a selective filter ( ) which damps the working channel ( ) more strongly than the neighboring channels ( ). Furthermore an analogue/digital converter ( ) is provided which detects the filtered measured signal from all the channels to be measured ( ) in a parallel and broadband manner and converts the above to a digital signal. An equaliser ( ) in series with the analogue/digital converter ( ), equalises the digital signal with a frequency response which is the reciprocal of the frequency response of the selective filter ( ).

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Unterhaching, Germany

Rolf Lorenzen