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3.2.5 Mode Description Frequency Measurement Mode 7

In Mode 7, Ua1 carries the signal of unknown frequency to be measured, and Ua2 is a gate signal of known width. A low to high transition of the Ua2 signal enables counting at the frequency of Ua1. When the gate Ua2 goes low, counting is disabled and the value is stored again in the Channel Counter Output Register, and the counter is cleared.

Figure 3-9 Frequency Measurement

BI-0433 - 12 Channel Incremental Encoder Interface with Isolated Inputs and Cable Fault Detection - 23 MAY 1997 Copyright 1997 Brand Innovators B.V. [Next] [Previous] [Up] [Top] [Contents] [Back]