
NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual
© National Instruments
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ix
Source Signal ........................................................................................... 5-33
Source .............................................................. 5-33
Source to an Output Terminal............................................ 5-34
Gate Signal............................................................................................... 5-34
Gate.................................................................. 5-34
Gate to an Output Terminal ............................................... 5-34
Aux Signal ............................................................................................... 5-34
Aux .................................................................. 5-35
A, Counter
n
B, and Counter
n
Z Signals ................................................ 5-35
Z Signal to an Output Terminal ......................................... 5-35
Up_Down Signal ..................................................................................... 5-35
HW Arm Signal ....................................................................................... 5-35
n
HW Arm Input .................................................. 5-36
Sample Clock Signal................................................................................ 5-36
Using an Internal Source .................................................................................. 5-36
Using an External Source ................................................................................. 5-37
Routing Counter
Sample Clock to an Output Terminal ................................ 5-37
Internal Output and Counter
n
TC Signals .............................................. 5-37
Internal Output to an Output Terminal .............................. 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