Q.series - Chronos
To measure a very low frequency (1 Hz) and a very high frequency (2 MHz) without modification to the measuring method, the digital inputs of the Q.bloxx module D101 employ the Chronos method to measure frequencies accurately. The Chronos method precisely measures in parallel, both the number of pulse edges “n” and the time “T” from the first edge to the last edge within a selectable time window. This is why frequency from 1 Hz to 2 MHz can be measured with high accuracy. The frequency is calculated from the Time “T” and the numberof edges “n” combined (e.g. 126,887 Hz).
