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Chapter 5
Counters
Getting Started with Counter Applications in Software
Note
For more information about programming counter applications and triggers in
software, refer to the NI-DAQmx Help or the LabVIEW 8.x Help.
E Series User Manual
Figure 5-10 shows the timing requirements for MasterTimebase.
Figure 5-10. MasterTimebase Timing Requirements
You can use the E Series device in the following counter-based
applications.
•
Counting Edges
•
Frequency Measurement
•
Period Measurement
•
Pulse Width Measurement
•
Semi-Period Measurement
•
Pulse Generation
You can perform these measurements through DMA, interrupt, or
programmed I/O data transfer mechanisms. The measurements can be
finite or continuous in duration. Some of the applications also use start
triggers and pause triggers.
t
p
t
t
w
w
t
= 50 ns minimum
p
t
= 23 ns minimum
w
5-10
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