• CONCEPTUAL DESIGN OF A PCM DIGITAL RECORDER FOR ON-BOARD APPLICATIONS

      Penna, Sergio D.; Rios, Domingos B.; EMBRAER Flight Test Division; LE Consultoria (International Foundation for Telemetering, 2000-10)
      On reviewing current PCM on-board data acquisition systems design is not very uncommon to find lots of useful signals being generated together with the PCM stream, such as bit clocks, word clocks, minor and major frame pulses. The purpose of this paper is to demonstrate a conceptual design of a digital recording device that takes advantage of these signals to collect data directly into a computer compatible disk file. Such device can eliminate the need of further PCM signal processing after the test and speed up the conversion process of pure digital sampling values into floating point numbers.