AEDA-3300 Datasheet, PDF (7/9 Pages) AVAGO TECHNOLOGIES LIMITED – Ultra Miniature, High Resolution Incremental Kit Encoders Cost eff ective

Output Waveforms
Amplitude
C
P
S1
S2
S3
S4
Po
Codewheel Rotation (Counter-clockwise )
2.5 V
0.5V
CH. A
2.5 V
0.5 V
CH. B
2.5 V
0.5 V
CH. I
CH. I-
2.5 V
0.5 V
CH. A-
2.5 V
0.5 V
CH. B-
2.5 V
0.5 V
Definitions
Count (N): N refers to the cycles per revolution (CPR) of the
encoder output.
One Cycle (C): 360 electrical degrees (°e).
One Shaft Rotation: 360 mechanical degrees, N cycles
(rotary motion only).
Phase (): The number of electrical degrees between the
center of the high state on the channel A and the center
of the high state of channel B. This value is nominally 90°e.
Pulse Width (P): The number of the electrical degrees that
an output is a high-level during one cycle, nominally
180°e or ½ a cycle.
Pulse Width Error (P): The deviation in electrical degrees
of the pulse width from its ideal value of 180°e.
Index Pulse Width (Po): The number of electrical degrees
that an index is high during one full shaft rotation. This
value is nominally 180°e or ½ cycle. 90°e (¼ cycle) index
pulse width available upon request.
State Width (S): The number of the electrical degrees
between transitions in the output of the channel B. There
are 4 states per cycle, each nominally 90°e.
State Width Error (S): The deviation in electrical degrees of
each state width from its ideal value of 90°e.
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