OPE2275S Optek Technology, Inc., OPE2275S Datasheet - Page 4
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OPE2275S
Manufacturer Part Number
OPE2275S
Description
Incremental Shaft Encoder
Manufacturer
Optek Technology, Inc.
Datasheet
1.OPE2275S.pdf
(4 pages)
Incremental Shaft Encoder
OPE1275S Single Channel (Tachometer)
OPE2275S Dual Channel
Issue A
Page 4 of 4
10/09
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Timing Definitions:
Timing Diagram:
PPR = Pulses Per Revolution
Electrical Degree (°e) = 1/360th of 1 cycle
Cycle = 360 electrical degrees (°e)
Symmetry = Relationship between X & Y in electrical
Position Error = The difference between the actual
Quadrature: The lead or lag difference between
Cycle Error = The difference between the actual shaft
Rise Time = Time required to switch between 10% and
Fall Time = Time required to switch between 90% and
Phone: (972) 323-2200 or (800) 341-4747
degrees (°e).
shaft position and the position indicated by
the encoder cycle count.
channels “A” and “B” in electrical degrees
(normally 90°e)
rotational position and the cycle count
rotational position.
90% of the highest to lowest signal levels.
10% of the highest to lowest signal levels.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com