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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual

Counter Timing Signals.................................................................................................... 5-32

Counter n Source Signal ........................................................................................... 5-33

Routing a Signal to Counter n Source .............................................................. 5-33

Routing Counter n Source to an Output Terminal............................................ 5-34

Counter n Gate Signal............................................................................................... 5-34

Routing a Signal to Counter n Gate.................................................................. 5-34

Routing Counter n Gate to an Output Terminal ............................................... 5-34

Counter n Aux Signal ............................................................................................... 5-34

Routing a Signal to Counter n Aux .................................................................. 5-35

Counter n A, Counter n B, and Counter n Z Signals ................................................ 5-35

Routing Signals to A, B, and Z Counter Inputs................................................ 5-35

Routing Counter n Z Signal to an Output Terminal ......................................... 5-35

Counter n Up_Down Signal ..................................................................................... 5-35

Counter n HW Arm Signal ....................................................................................... 5-35

Routing Signals to Counter n HW Arm Input .................................................. 5-36

Counter n Sample Clock Signal................................................................................ 5-36

Using an Internal Source .................................................................................. 5-36

Using an External Source ................................................................................. 5-37

Routing Counter n Sample Clock to an Output Terminal ................................ 5-37

Counter n Internal Output and Counter n TC Signals .............................................. 5-37

Routing Counter n Internal Output to an Output Terminal .............................. 5-37

Frequency Output Signal .......................................................................................... 5-37

Routing Frequency Output to a Terminal......................................................... 5-37

Default Counter/Timer Routing........................................................................................ 5-37

Counter Triggering ........................................................................................................... 5-38

Other Counter Features.........................................

............................................................ 5-38

Cascading Counters .................................................................................................. 5-38

Prescaling.................................................................................................................. 5-39

Synchronization Modes ............................................................................................ 5-39

80 MHz Source Mode....................................................................................... 5-39

External or Internal Source Less than 20 MHz ................................................ 5-40

Chapter 6

Digital Routing and Clock Generation

Digital Routing ................................................................................................................. 6-1

Clock Routing................................................................................................................... 6-1

80 MHz Timebase .................................................................................................... 6-2

20 MHz Timebase .................................................................................................... 6-2

100 kHz Timebase .................................................................................................... 6-2

National Instruments cDAQ-9133 User Manual

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