Rohde and Schwarz Gmbh & Co. Kg

Thomas Lutz

Ralf Plaumann

Jens Volkmann

Gottfried Holzmann

Werner Mittermaier

Franz Obermayr

Michael Block

Walter Schmitz

Kurt Schmidt

Albert Moser

Feng Xie

Christiane Klaus

Hailiang Jin

Anton Strohmeier

Matthias Lutz

A switch-extender is connected to a measurement system and to several DUTs. It splits a signal from the measurement system into several signals so that the several DUTs receive the same signal and can therefore be tested in parallel. The switch-extender further includes at least one amplifier and/or at least one attenuator for every output port so that every signal has the same signal level no matter what the individual attenuation factor of the signal connectors or of the internal printed circuit board is. Furthermore a method for calibrating the measurement system as well as for the switch-extender and the signal connectors describes how to obtain the needed calibration values both for the downlink path and for the uplink path without changing the signal connector.

Switch-extender and a method for calibrating

A testing method for testing a plurality of devices under test (DUT) includes transmitting first testing routine signals from a first backend controller to a testing front end module via a wired data connection between the first backend controller and a first testing signal interface of the testing front end module, transmitting second testing routine signals from a second backend controller to the testing front end module via a wired data connection between the second backend controller and a second testing signal interface of the testing front end module, prioritizing one of the first and second testing routine signals according to predefined priority criteria in the testing front end module, and generating testing signals in the testing front end module on the basis of the prioritized testing routine signals.

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

The invention is related to a smart testing apparatus and preferably a method for testing at least a first DUT and a second DUT using a mobile communications testing device. The method comprises the steps of determining, whether a first RF test signal from/to the first DUT interferes with a second RF test signal from/to the second DUT. It determines, whether the second RF test signal from/to second DUT interferes with the first RF test signal from/to the first DUT. It predetermines, whether at least measuring the first measuring result obtained by applying the first RF test signal is disturbed above a first disturbance threshold value. It predetermines, whether at least a second measuring result obtained by applying the second RF test signal is disturbed above a second disturbance threshold value.

Smart testing management

A method for testing multiple mobile phones performs the testing of a receiving characteristic of each mobile phone in a cyclical sequence of several first measuring tasks. The receiving characteristic of multiple mobile phones in multiple first measuring tasks is tested in parallel.

Method and measurement system for testing multiple mobile phones in parallel

A test system for testing a plurality of devices under test (DUTs) is provided. The test system comprises a test signal generator configured to generate test signals to be transmitted to the DUTs, wherein the test signals comprise at least one synchronization signal. The test signal generator is configured to broadcast the at least one synchronization signal to the DUTs. It is thereby possible to simultaneously test more than one DUT.

Test system and method for testing multiple devices under test simultaneously

A measuring system comprises a timing unit and at least two signal generators. The signal generators are each configured to generate a measuring signal and to supply it to a device under test. The timing unit is configured to generate start time signals, which each indicate an allowed start time of the measuring signals. Said signal generators are configured to only start generating the measuring signals at least instances of start time signals.

Measuring device and measuring method for start time synchronized signal generation

The present invention relates to a calibration method and a calibration arrangement for a RF test apparatus for testing a RF device under test. Instead, a calibration board is provided and connected to each of the cables of the RF test apparatus. A calibration board is configured to provide a plurality of connection loops by connecting the input/output channel terminals of the test apparatus one after the other with each other. This results to a bunch of different connection loops. Then a physical parameter, such as the attenuation over frequency, is measured for each of these connection loops. Since each physical parameter can be described by a single equation, this results to an amount of different equations which form an equation system. The idea underlying the present invention is that the amount of equations of this equation system, which amount corresponds to the different connection loops, is at least equal or higher than the amount of unknown parameters of the equation system. Consequently, the equation system is overdetermined and&#x2014;as a consequence of that&#x2014;mathematically solvable.

Calibration method and calibration arrangement

A measuring device comprises at least one port, an external cable connected to the at least one port, a transmitter connected to the at least one port through a switch, a receiver connected to the at least one port through the switch and a reference path connecting the transmitter with the receiver through the switch. The cable is connected to calibration elements, e.g., short and open. The switch alternately switch in a manner that in a first state the transmitter and the receiver are connected to the at least one port and that in a second state the transmitter and the receiver are connected via the reference path.

Method for calibrating a cable and respective measuring device

The invention relates to a switching device for the alternate connection of at least one first test port or of a second test port to a measuring-device connection, where the measuring-device connection provides at least one test-signal input. The test-signal input is connected to a first signal path and to a second signal path, where the first signal path is connected alternately to the first or to the second test port, and the second signal path is connected at least to the respectively other test port.

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Munich, Germany

Thomas Lutz