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Quadrature encoder input
Single ended
outputs of
Encoder
A
B
I
GND
PCI-1784
connector
CHnA+
CHnB+
CHnZ+
EGND
Differential
outputs of
Encoder or
Line driver
GND
A+
A-
B+
B-
I+
I-
PCI-1784
connector
EGND
CHnA+
CHnA-
CHnB+
CHnB-
CHnZ+
CHnZ-
Pulse/Direction
Counter
PULSE
DIR
GND
PCI-1784
connector
CHnA+
CHnB+
EGND
Figure 3-3: Quadrature encoder input connections