Figure 14.
Connecting Single-Ended Line Drivers
Diff In 0+
Diff In 0–
Phase A
Twisted Pair
Twisted Pair
Diff In 1+
Diff In 1–
Phase B
Encoder
CVS
+
–
+
–
TTL I/O
The following image shows the circuit for bidirectional TTL I/O.
Figure 15.
TTL Input/Output Circuit
100
Ω
TTL_OUT(0)
TTL_OE(0)
TTL_IN(0)
10 k
Ω
FB
TTL I/O
LED Indicators
The NI CVS-1459 provides the following LED indicators.
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NI CVS-1459 User Manual