National Instruments cDAQ-9133 - Page 8

Contents
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Pulse Measurement ................................................................................................... 5-7
Single Pulse Measurement................................................................................ 5-8
Implicit Buffered Pulse Measurement ..............................................................5-8
Sample Clocked Buffered Pulse Measurement ................................................5-9
Semi-Period Measurement........................................................................................ 5-9
Single Semi-Period Measurement .................................................................... 5-10
Implicit Buffered Semi-Period Measurement................................................... 5-10
Pulse versus Semi-Period Measurements ......................................................... 5-10
Frequency Measurement...........................................................................................5-11
Low Frequency with One Counter.................................................................... 5-11
High Frequency with Two Counters.................................................................5-12
Large Range of Frequencies with Two Counters ............................................. 5-12
Sample Clocked Buffered Frequency Measurement ........................................ 5-13
Choosing a Method for Measuring Frequency ................................................. 5-14
Which Method Is Best?.....................................................................................5-16
Period Measurement ................................................................................................. 5-18
Position Measurement............................................................................................... 5-19
Measurements Using Quadrature Encoders...................................................... 5-19
Channel Z Behavior .................................................................................................. 5-20
Measurements Using Two Pulse Encoders....................................................... 5-21
Buffered (Sample Clock) Position Measurement .............................................5-21
Two-Signal Edge-Separation Measurement .............................................................5-22
Single Two-Signal Edge-Separation Measurement..........................................5-22
Implicit Buffered Two-Signal Edge-Separation Measurement ........................5-23
Sample Clocked Buffered Two-Signal Separation Measurement ....................5-23
Counter Output Applications ............................................................................................ 5-24
Simple Pulse Generation...........................................................................................5-24
Single Pulse Generation.................................................................................... 5-24
Single Pulse Generation with Start Trigger ...................................................... 5-25
Pulse Train Generation .............................................................................................5-25
Finite Pulse Train Generation ........................................................................... 5-25
Retriggerable Pulse or Pulse Train Generation................................................. 5-26
Continuous Pulse Train Generation .................................................................. 5-27
Buffered Pulse Train Generation ...................................................................... 5-28
Finite Implicit Buffered Pulse Train Generation ..............................................5-28
Continuous Buffered Implicit Pulse Train Generation ..................................... 5-29
Finite Buffered Sample Clocked Pulse Train Generation ................................5-29
Continuous Buffered Sample Clocked Pulse Train Generation ....................... 5-30
Frequency Generation............................................................................................... 5-30
Using the Frequency Generator ........................................................................ 5-30
Frequency Division.............................................
......................................................5-31
Pulse Generation for ETS ......................................................................................... 5-32