What is “Minimum Edge Separation” and Why Should I Care?

When it comes to magnetic incremental linear encoders, sometimes the configurable performance parameters can be a tad obscure.  One of the most puzzling is the feature called “Minimum Edge Separation”.

Just for review, a magnetic incremental linear encoder system consists of a precision-encoded magnetic tape and a precision magnetic reader head.  It is a non-contact device and is an incremental measurement system.  Incremental means the position is given as a series of pulses which must be counted by the controller.  If the count is lost or corrupted for any reason (such as a power-down), the system must be re-zero’d to a known home position before controlled positioning/measuring can resume.

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