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Contents
NI 6232/6233 User Manual xii ni.com
Prescaling........................................................................................................7-34
Duplicate Count Prevention............................................................................7-35
Duplicate Count Prevention Example ..............................................7-35
Duplicate Count Example.................................................................7-36
Example Application That Prevents Duplicate Count......................7-37
When To Use Duplicate Count Prevention ...................................... 7-38
Enabling Duplicate Count Prevention in NI-DAQmx......................7-38
Synchronization Modes................................................................................... 7-38
80 MHz Source Mode....................................................................... 7-39
Other Internal Source Mode ............................................................. 7-40
External Source Mode ...................................................................... 7-40
Chapter 8
PFI
Using PFI Terminals as Timing Input Signals..............................................................8-2
Exporting Timing Output Signals Using PFI Terminals............................................... 8-3
Using PFI Terminals as Static Digital Inputs and Outputs............................................ 8-3
Connecting PFI Input Signals........................................................................................ 8-3
PFI Filters...................................................................................................................... 8-4
I/O Protection ................................................................................................................8-5
Programmable Power-Up States....................................................................................8-6
Connecting Digital I/O Signals ..................................................................................... 8-6
Chapter 9
Isolation and Digital Isolators
Digital Isolation.............................................................................................................9-2
Benefits of an Isolated DAQ Device.............................................................................9-2
Chapter 10
Digital Routing and Clock Generation
Clock Routing................................................................................................................ 10-1
80 MHz Timebase...........................................................................................10-2
20 MHz Timebase...........................................................................................10-2
100 kHz Timebase ..........................................................................................10-2
External Reference Clock ...............................................................................10-2
10 MHz Reference Clock................................................................................10-3
Synchronizing Multiple Devices ................................................................................... 10-3
Real-Time System Integration Bus (RTSI)................................................................... 10-3
RTSI Connector Pinout................................................................................... 10-4
Using RTSI as Outputs ................................................................................... 10-5