Originally Posted by
CNCMAN172
When the wave goes positive and when it comes back down to zero. The electronics typical monitor the level of these waveform edges and that is where you get the term quadrature. If you count the edges of the two wave forms you get a resolution of 4X the number of pulses per revolution.
Just to clarify, many use the term Quadrature to indicate the x4 factor, whereas in fact the differential encoder gets its quadrature description from the fact the two outputs are at 90° relation to each other, not because the controller may extract 4x the basic resolution, the Quadrature description applies whether the electronics multiply x1, x2 or x4.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.