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5.Output Wave Form - Canon R-1SO Instruction Manual

Laser rotary encoder
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5 5 5 5 . . . . Output wave form
5.Output wave form
Encoder signal output
5-1
90°±10°
90°±10°
A-phase
A-phase
B-phase
B-phase
500~1250nsec
500~1250nsec
Z-phase
Z-phase
Clockwise rotation
Counterclockwise rotation
looking from shaft side.
looking from shaft side.
【Note】
Z phase is not synchronized with A phase or B phase
Z phase rising edge is the same position both in Clockwise and in
Counterclockwise rotation. The Z-phase output is one pulse per rotation. As the
pulse width is narrow, use the "peak detection" mode of oscilloscope for
monitoring the Z-phase signal.
The pulse width of the Z-phase is 500 – 1250 nsec. In case the receiving IC needs
a wider pulse width, increase the width using a one-shot multi-vibrator (74 LS221
etc.).
LD alarm signal output
5-2
LD Alarm
LD driving current is always monitored, and goes Low-level when the LD current
exceed 1.5 times at the time of the shipment.
7

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