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NDAS-N. User Manual.
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Fig. 13.4. Raw Data Logger module. Directories structure
14. NDAS RT antialiasing filters. Decimation.
To obtain output frequencies from 4000 samples/sec and below, the Recorder's ADC operates at
a rate of 8000 samples per second. For an output rate of 8000 samples/sec, the Recorder’s ADC samples
at a rate of 16000 samples per second.
Table 14.1
shows the decimation coefficients for each of the target sampling rates. For each of
the decimation coefficients (10, 8, 4 and 2) a dedicated filter is used.
Table 14.2
shows each filter
characteristics.
Table 14.3
shows the resulting characteristics of filter and decimation chains