Programming instructions

Contents
LabVIEW Data Acquisition Basics Manual xii
© National Instruments Corporation
Chapter 25
Measuring Pulse Width
Measuring a Pulse Width................................................................................................. 25-1
Determining Pulse Width ................................................................................................ 25-2
DAQ-STC ......................................................................................................... 25-2
Am9513............................................................................................................. 25-4
8253/54.............................................................................................................. 25-5
Controlling Your Pulse Width Measurement.................................................................. 25-6
DAQ-STC or Am9513...................................................................................... 25-6
Buffered Pulse and Period Measurement ........................................................................ 25-7
Increasing Your Measurable Width Range ..................................................................... 25-8
Chapter 26
Measuring Frequency and Period
Knowing How and When to Measure Frequency and Period ......................................... 26-1
DAQ-STC, Am9513 ......................................................................................... 26-2
8253/54.............................................................................................................. 26-2
Connecting Counters to Measure Frequency and Period ................................................ 26-3
DAQ-STC, Am9513 ......................................................................................... 26-3
Measuring the Frequency and Period of High Frequency Signals.................................. 26-4
DAQ-STC ......................................................................................................... 26-4
Am9513............................................................................................................. 26-5
DAQ-STC, Am9513 ......................................................................................... 26-6
8253/54.............................................................................................................. 26-7
Measuring the Period and Frequency of Low Frequency Signals................................... 26-8
DAQ-STC ......................................................................................................... 26-8
Am9513............................................................................................................. 26-9
DAQ-STC, Am9513 ......................................................................................... 26-10
8253/54.............................................................................................................. 26-10
Chapter 27
Counting Signal Highs and Lows
Connecting Counters to Count Events and Time ............................................................ 27-1
Am9513............................................................................................................. 27-2
Counting Events .............................................................................................................. 27-3
DAQ-STC ......................................................................................................... 27-3
Am9523............................................................................................................. 27-4
8253/54.............................................................................................................. 27-6