Led Indicators - National Instruments CVS-1459 User Manual

Phase A
Phase B
TTL I/O
The following image shows the circuit for bidirectional TTL I/O.
TTL I/O

LED Indicators

The NI CVS-1459 provides the following LED indicators.
14 | ni.com | NI CVS-1459 User Manual
Figure 14. Connecting Single-Ended Line Drivers
Encoder
Figure 15. TTL Input/Output Circuit
FB
Twisted Pair
Twisted Pair
10 k Ω
100 Ω
CVS
Diff In 0+
+
–
Diff In 0–
Diff In 1+
+
–
Diff In 1–
TTL_OUT(0)
TTL_OE(0)
TTL_IN(0)