Optical Encoders

zahir jetha (zahir@interchange.ubc.ca) Fri, 1 Dec 2000 11:53:28 -0800 (PST) 

Date: Fri, 1 Dec 2000 11:53:28 -0800 (PST)
From: zahir jetha <zahir@interchange.ubc.ca>
Subject: Optical Encoders



The digital outputs on an optical encoder are often grey coded. Gray coded
means that every time the encoder senses a change, the change occurs in
any one bit at a time.
Questions: If there exists a change, does the encoder scan the change one
bit at a time from the MSB to the LSB?and also how fast can the encoder
scan the change?
Does the encoder scan the change continually or at discrete points in time
Only?