National Instruments NI 17xx 사용자 설명서
Chapter 2
Power and I/O
2-8
ni.com
Figure 2-5 shows an example of connecting the quadrature encoder
differential line drivers.
differential line drivers.
Figure 2-5. Connecting Differential Line Drivers
Figure 2-6 shows the internal quadrature encoder/RS-422 input circuit.
Figure 2-6. NI Smart Camera Quadrature Encoder Input Circuit
Phase A+
Phase A–
Phase A–
Phase A
Phase B+
Phase B–
Phase B–
Phase B
Encoder
NI
17xx
Twisted
Pair
Pair
Twisted
Pair
Pair
+
–
Phase A–
Phase A+
+
–
Phase B–
Phase B+
+3.3 V
10 k
Ω
10 k
Ω
10 k
Ω
10 k
Ω
7.5 k
Ω
7.5 k
Ω
7.5 k
Ω
7.5 k
Ω
NI 17xx