National Instruments DAQ S user manual - page 8

Contents
NI 6124/6154 User Manual viii ni.com
Period Measurement.......................................................................................7-6
Single Period Measurement..............................................................7-6
Buffered Period Measurement..........................................................7-7
Semi-Period Measurement..............................................................................7-7
Single Semi-Period Measurement.................................................... 7-8
Buffered Semi-Period Measurement................................................ 7-8
Frequency Measurement.................................................................................7-9
Choosing a Method for Measuring Frequency.................................7-12
Position Measurement.....................................................................................7-14
Measurements Using Quadrature Encoders......................................7-14
Measurements Using Two Pulse Encoders...................................... 7-16
Buffered (Sample Clock) Position Measurement.............................7-17
Two-Signal Edge-Separation Measurement................................................... 7-17
Single Two-Signal Edge-Separation Measurement..........................7-18
Buffered Two-Signal Edge-Separation Measurement......................7-18
Counter Output Applications.........................................................................................7-19
Simple Pulse Generation.................................................................................7-19
Single Pulse Generation....................................................................7-19
Single Pulse Generation with Start Trigger......................................7-20
Retriggerable Single Pulse Generation.............................................7-20
Pulse Train Generation....................................................................................7-21
Continuous Pulse Train Generation..................................................7-21
Finite Pulse Train Generation...........................................................7-22
Frequency Generation.....................................................................................7-23
Using the Frequency Generator........................................................7-23
Frequency Division.........................................................................................7-24
Pulse Generation for ETS............................................................................... 7-24
Counter Timing Signals.................................................................................................7-25
Counter n Source Signal.................................................................................7-26
Routing a Signal to Counter n Source.............................................. 7-26
Routing Counter n Source to an Output Terminal............................7-27
Counter n Gate Signal.....................................................................................7-27
Routing a Signal to Counter n Gate..................................................7-27
Routing Counter n Gate to an Output Terminal............................... 7-27
Counter n Aux Signal......................................................................................7-28
Routing a Signal to Counter n Aux ..................................................7-28
Counter n A, Counter n B, and Counter n Z Signals...................................... 7-28
Routing Signals to A, B, and Z Counter Inputs................................ 7-28
Routing Counter n Z Signal to an Output Terminal......................... 7-28
Counter n Up_Down Signal............................................................................7-29
Counter n HW Arm Signal..............................................................................7-29
Routing Signals to Counter n HW Arm Input..................................7-29
Counter n Internal Output and Counter n TC Signals.....................................7-29
Routing Counter n Internal Output to an Output Terminal.............. 7-30