Contents
NI 660x User Manual vi ni.com
Chapter 3
Signal Connections
Programmable Function Interfaces (PFIs)..................................................................... 3-1
Digital Filtering ............................................................................................................. 3-1
Power-On State.............................................................................................................. 3-3
Pin Assignments ............................................................................................................ 3-4
I/O Connector Pinout..................................................................................................... 3-6
Outputs .......................................................................................................................... 3-8
Counters......................................................................................................................... 3-10
Counter n Source Signal ................................................................................. 3-10
Counter Source to Counter Out Delay.............................................. 3-12
Counter n Gate Signal..................................................................................... 3-13
Counter n Auxiliary Signal ............................................................................. 3-14
Counter n Internal Output Signal.................................................................... 3-14
Hardware Arm Start Triggers ......................................................................... 3-15
Counter Pairs................................................................................................... 3-15
Counter Applications ...................................................................................... 3-15
Real-Time System Integration Bus ............................................................................... 3-16
RTSI Triggers ................................................................................................. 3-16
+5 V Power Source........................................................................................................ 3-18
I/O Signals .....................................................................................................................3-19
Field Wiring Considerations ........................................................................... 3-19
Noise ............................................................................................................... 3-19
Crosstalk.......................................................................................................... 3-20
Inductive Effects ............................................................................................. 3-21
Transmission Line Effects .............................................................................. 3-23
Appendix A
Technical Support and Professional Services
Glossary
Index
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