978–1–4673–2240–9/12/$31.00 ©2012 IEEE 207 35th Int. Spring Seminar on Electronics Technology Automatic Testing of Multimedia Units Vaclav Wirth 1) , Tomas Blecha 1) , Ladislav Herc 2) , Lukas Klocker 2) , Richard Linhart 1) , Karel Rendl 1) , Petr Sehnal 2) , Frantisek Steiner 1) 1) Department of Technologies and Measurement, Faculty of Electrical Engineering, University of West Bohemia, Pilsen, Czech Republic 2) Continental Automotive Czech Republic s.r.o., Brandys nad Labem – Stara Boleslav, Czech Republic vwirth@ket.zcu.cz Abstract: This article deals with possibilities of the automatic testing of multimedia units. The aim of the work was to design and realize an automatic test system for a functional parameter measurement of multimedia units. The system was built up by the help of individual measuring devices and the designed multiplexer. The entire system is controlled by the control computer. For the control computer was necessary to create software to control and communicate with devices and multimedia unit itself. For making utility programs, the programming language Labview and Teststand software tool from National Instruments was chosen. 1. INTRODUCTION This article deals with possibilities of the automatic testing of multimedia units. The cooperation between the University of West Bohemia and Continental Automotive Czech Republic s.r.o. enabled the system realization. The company will continue to use this system. In order to find out whether a tested product is in accordance with required parameters, the testing includes the measurement of multimedia unit parameters. These parameters are given by a customer and its fulfillment warrants a correct functionality and a service life of a product. Formerly, the test was carried out manually according to single measurements. The manual test was time-consuming therefore a demand for automatic tester making occurred. This article describes the measuring system enabling a measurement of basic functional parameters and the used software and hardware which enable further modification for other parameter tests. The flow diagram of the testing system is seen in the fig. 1. Since currently all devices are not used at once, they are connected by the help of the multiplexer. The multiplexer is controlled by a control computer. In dependence on a type of procedure measurement, single measuring devices are connected to outputs of a multimedia unit. Fig. 1. Flow diagram of the test system. 2. REQUIREMENTS Measurement of functional parameters of multimedia units carried out manually is demanding for operation and time necessary for testing. For these reasons, a demand for an automated test originated. Further demand was to exploit current measuring devices. By the help of this system, it should be possible to measure various multimedia units. Test parameters are given by the customer. Therefore, the system must enable measurement for various parameters. Due to mentioned demands, the system must be modifiable and expandable.