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...
June 10, 2013
Since most electronics are set up to have high input impedance, in some situations the addition of a loading or “termination” resistor can help to reduce interference from electrical noise. This can be of particular help when implementing an incremental encoder where there is a long cable run. If the...
April 15, 2013
Here are a few definitions of the word “hysteresis” I found online: From Sensorland.com Hysteresis – Non-uniqueness in the relationship between two variables as a parameter increases or decreases. Also called deadband, or that portion of a system’s response where a change in input does not produce a change in...
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