July 28, 2014
Seeing Encoder Quadrature with a Two-Channel Scope I received an e-mail from a customer concerned about the “out of control” optical encoder signals he was seeing on his Oscilloscope. The photo below shows the type of signal he was seeing: The encoder in question was a 10,000 Line Count optical...
February 22, 2014
An optical quadrature encoder is an incremental encoder with outputs consisting of two incremental channels that are out of phase by 90 electrical degrees. In each part of the encoder cycle, the two signals are in unique positions relative to each other. By comparing the difference between the high and...
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