Galil DMC-3425 Manual De Usuario

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The encoder generates N pulses per revolution.  It outputs two signals, Channel A and B, which are in 
quadrature.  Due to the quadrature relationship between the encoder channels, the position resolution is 
increased to 4N quadrature counts/rev. 

The model of the encoder can be represented by a gain of 

 

Kf = 4N/2π       [count/rad] 

For example, a 1000 lines/rev encoder is modeled as 

 

Kf = 638