|
|
Spectrum Analyser N1996A-503 and Measurement Uncertainty
Trojan, Martin ; Uher, Miroslav (referee) ; Havlíková, Marie (advisor)
The main target of this master’s thesis is to introduce the reader with the spectrum analyzer, Agilent N1996A CSA. This work explains all the functions of this measuring instrument, control elements and presents some technical parameters. The next part of this thesis deals with the measurement of coaxial cables, so that is why a whole chapter is devoted to coaxial cables and conductors in general. The rest of this thesis deals with issues of measurement uncertainties. This part contains the general procedure for the evaluation of uncertainty, followed by a practical part. The practical part contains measurement of distance to fault and return loss. Measurements were made on 4 samples of coaxial cable. At the end of the practical parts the measured values including the uncertainties and results are summarized in the final paragraph.
|
|
|
Electromagnetic compatibility tests
Kolařík, Jan ; Hoder, Karel (referee) ; Havlíková, Marie (advisor)
The aim of this bachelor project is analysis problems branch of science EMC. The bachelor project contains basic distribution field and description individual parts of the field. Next bachelor project contains detailed description of individual measuring devices and equipment test room of EMC in company AEV s.r.o. like are signal generator, spectral analyzer and antennes. Last part of bachelor project deals with measurement electromagnetic interference on the product from the company AEV s.r.o. in accordance with the standard TL965 and design report of tests for a customer.
|
|
|
Communication Environment for Spectral Analyzer Control
Smělík, Martin ; Šebesta, Jiří (referee) ; Dřínovský, Jiří (advisor)
The aim of this master‘s thesis was design a new communication interface for spectral analyzer Seaward EMC Spectrum Receiver, which instead of the RS 232 interface is connected to a computer via the USB interface. This thesis contains both hardware and software solution based on the analysis and comprehensive understanding of communication between the spectrum analyzer and the computer. Further it contains the whole realization of communication interface and an example of measurement of the EMC problems too. Last part of this thesis was a realization of the automatic measurement via the development environment MATLAB and Agilent VEE, which was used for measurement of noise background.
|
|
|
Dynamic Signal Analyzer
Grohoľ, Stanislav ; Ing. Miroslav Horáček, Ph.D., ÚPT AVČR Brno (referee) ; Zobač, Martin (advisor)
The thesis deals with the two-port transmission measurement using self-made dynamic signal analyzer (DSA) and its associated problems. The DSA is based on National Instruments data acquisition card. In this work are provides basic analysis, for which the DSA can be used. Described are methods of two-port transmission measuring. Definitions concerning the creation of the DSA are described in detail. Listed are the kinds of stimuli and parameters of data acquisition cards. The practical part describes the properties of the selected data acquisition card for DSA and utility, created in MATLAB. In practical part are verified properties of individual stimulus and referred to the comparison with theoretical properties. Selected stimulus is used in a particular two-port measurement and the results are compared with theoretical model. Experimentally is determined the size of the dynamic range of the analyzer.
|
|
|
Funktions of Spectrum Analyser N1996A-503
Šoukal, David ; Šedivá, Soňa (referee) ; Havlíková, Marie (advisor)
The theme of this diploma work is to introduce spectrum analzyer Agilent CSA N1996A to readers. In the work there are explained in detail all measuring functions of this machine, there are also mentioned all engineering characteristics and described all operating elements of this machine. In the diploma work is also mentioned the basice division of spectrum analyzers and their principles of activity. In the pracical part there are proposed the measurement assignments for hearers of subject MEMT, where is the possibility to use already mentioned spectrum analyzer. Including of the assignments there are also theoretical analysis of each assignment, their diagrams of wiring, practical metering and interpretation of results.
|
|
|
Automated system for transfer measurement of two-port blocks
Nuhlíček, Karel ; Drexler, Petr (referee) ; Hadinec, Michal (advisor)
This work descripes the principles of RF spektrum analyzers and generators, introduces the technical specifications of specific instruments and describes the design of computer-controlled measuring system using generator N9310A and N9320A spectrum analyzer for measuring the value of transmission of two-port blocks. The practical part is focused on the realization of the program for the operation and measurement automation allowing to set various parameters, system calibration, record, display measured values and verification functions of different equivalent circuit.
|
|
|
Electromagnetic field scanner and its utilization in EMC measurement
Chupáč, Michal ; Číž, Radim (referee) ; Kubánek, David (advisor)
Master’s thesis is focused on making the acquaintance of EMC issues and ways of electromagnetic field scanner RS321 utilization for pre-compliance measurements. First part contains analysis of available equipment’s influence on measurement results on the basis of gathered specification. Next part includes an example measurement used as operational manual for scanner and its controlling program. The most important part is correction evaluation for performed EMI measurement of signal generator using its EMC certification protocol and application of gained correction curve on independent EMI measurement of device tested by EMC testing laboratory. Other possibilities of scanner utilization are mentioned in the next chapters. Last part of the thesis contains suitability evaluation of EMC scanner on the basis of findings from performed measurements.
|
|
|
Mobile workplace for field strength measurement
Gašpierik, Andrej ; Urbanec, Tomáš (referee) ; Láčík, Jaroslav (advisor)
The aim of this work is how to construct mobile workplace for automated field strength measurement in depending on the distance from transmitter. This is a very sophisticated device. It can be used during covering buildings wi-fi or GSM. DEPARTMENT OF RADIOELECTRONICS FEKT VUT in Brno is going to use this workplace on lessons of subject Proposal antennas and radio links. This thesis summarizes the problematics of extension and measurement of electromagnetic waves, pissibilities of measuring the distance, communication between microcontroller ATmega16 and notebook via USB bus, data reading from the spectrum analyzer and the precessing of these results in the user interface. The whole device that can render how changes signal power at increasing distance from the source of the signal has been designed and tested.
|
|
|
Spectrum Analyzer up to 500 MHz
Čada, David ; Vimperk), Tomáš Baráth (Rohde Schwarz (referee) ; Šebesta, Jiří (advisor)
This project deals with design and realization of the spectrum analyser using double superheterodyne topology with frequency range up to 500MHz. This work solves hardware blocks like phase lock loops, intermediate frequency filters, saw filter, crystal filter, logarithmic detector. Content of work is also design description and tuning of spectrum analyzer parts.
|
|
|
Dynamic Signal Analyzer
Grohoľ, Stanislav ; Ing. Miroslav Horáček, Ph.D., ÚPT AVČR Brno (referee) ; Zobač, Martin (advisor)
The thesis deals with the two-port transmission measurement using self-made dynamic signal analyzer (DSA) and its associated problems. The DSA is based on National Instruments data acquisition card. In this work are provides basic analysis, for which the DSA can be used. Described are methods of two-port transmission measuring. Definitions concerning the creation of the DSA are described in detail. Listed are the kinds of stimuli and parameters of data acquisition cards. The practical part describes the properties of the selected data acquisition card for DSA and utility, created in MATLAB. In practical part are verified properties of individual stimulus and referred to the comparison with theoretical properties. Selected stimulus is used in a particular two-port measurement and the results are compared with theoretical model. Experimentally is determined the size of the dynamic range of the analyzer.
|
guest ::
