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Precision-frequency-counter-tachometer

2017-08-18 15:39  
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In this configuration, the display reads hertz directly. With pin 11 of the ICM7027 A connected to V00, the gating time will be 0.1 second; this will display tens of hertz as the least significant digit.
Precision-frequency-counter-tachometer

For shorter gating times, an ICM7207 can be used with a 6.5536-MHz crystal, giving a 0.01 second gating with pin 11 connected to V00, and a 0.1 second gating with pin 11 open.



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