ˈiːtʃ sˈɪstəm slˈæʃ sˈɛnsɚ jˈuːzɪŋ ðɪ ˈæstɚɹˌɪks dˈeɪɾə fˈɔːɹmæt ɪz ɐsˈaɪnd ɐ juːnˈiːk aɪdˈɛntɪfˌaɪɚ kəmpˈoʊzd ʌv tˈuː ˈeɪt bˈɪt vˈæljuːz, ðə sˈɪstəm ˈɛɹiə kˈoʊd ˌɛsˌeɪsˈiː ænd ðə sˈɪstəm aɪdˈɛntɪfɪkˈeɪʃən kˈoʊd ˌɛsˌaɪsˈiː.
Each system/sensor using the ASTERIX data format is assigned a unique identifier composed of two 8 bit values, the System Area Code (SAC) and the System Identification Code (SIC).