Modul Bi-lingual Untuk Televisi Dengan Menggunakan SAA7283ZP Yang Diatur Lewat I2C Dari 80C31

At the moment, in Indonesia has been able to enjoy NICAM (Near Instantaneous Companded Audio Multiplex ) technology within the television world. Television without NICAM facility, however, can receive the broadcast of the transmitter with NICAM technology, although it emits mono audio signal only. To receive broadcast with NICAM audio quality, TV audience, therefore has to buy a new set of television equipped with NICAM facility. Dealing with the problem, a module that can externally added to the television was made so that the audience of television with non-NICAM technology can enjoy the system itself. The module used the single chip NICAM decoder SAA7283ZP of Phillips semiconductor that can be adjusted using microcontroller software. The module receives IF signal taken from TV tuner and separates the audio and video signal present. SAA7283ZP controlled by 8031via I2C that is stimulated by 2 pin port 1, then takes and processes the audio 'data' . The output of the process is entered in a separated audio system, the testing result conceals that the occuring error is mostly influenced by the quality of RF signal received by the television set. This result is obviously seen as the testing system employs indoor and outdoor antennas. Besides that, improper grounding the system also affects the module in processing the NICAM signal

Alat Ukur Temperatur 5 Kanal Menggunakan Mikrokontroler 8031

This paper describes the designing of five channels instrument for temperature measurement. This instrument also has differential mode facility so the temperature difference between two points can be determined. This instrument was designed by using 8031 microcontroller for the temperature measurement processes. Generally%2C this instrument consists of two main parts. The first part is 8031microcontroller minimum system and the second one is sensor and transmitter circuit. This instrument uses LM35 temperature sensor and transmitter circuit is used to transmit the signal so the remote temperature measurement can be achieved. Experiment was done and the measurement data was recorded. The maximum error of temperature measurement that can be achieved is 1%B0C. The experiment was also done by using 30 meters transmitter cable and it show good result too