By Michele Vadursi
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Extra resources for Data Acquisition
84 MHz and a carrier frequency fc = 500 MHz, and let us suppose that the values of Bg and p chosen by the user are equal to 0 and 3, respectively. , 2004). 60504 MHz, which implies an increase of more than 9%. Let us go through the steps of the algorithm implementing the proposed method to evaluate how such modification is determined. 60504 MHz, which is the optimal sample rate according to the new method. , 2004), and (iii) provides the thresholds f1 and f2, calculated according to the new conditions (15) and (19).
For instance, a clock of a data acquisition system can lose exactly half a second per month: its time accuracy worsens half a second per month from the initial setting, but it has perfect frequency stability, and hence perfect time predictability. Generally speaking if the time or frequency errors of the clocks may be estimated and compensated, the performance of a distributed acquisition system based on that clock can be improved. Besides the qualities of a clock, two other definitions are fundamental for the time keeping of distributed data acquisition systems: synchronization and syntonization.
Fast and accurate ADC testing via an enhanced sine wave fitting algorithm. IEEE Trans. Instrum. , 46(4):1020–1025, August 1997. [IEE94] IEEE Standards Board. IEEE Standard 1057 for Digitizing Waveform Recorders. IEEE Press, New York, NY, December 1994. [IEE00] IEEE Standards Board. IEEE Standard 1241 for Terminology and Test Methods for Analog-to-Digital Converters. IEEE Press, New York, NY, December 2000. [KB05] I. Kollár and J. J. Blair. Improved determination of the best fitting sine wave in ADC testing.