Chapter 5
Counters
5-10
ni.com
Figure 5-10 shows the timing requirements for MasterTimebase.
Figure 5-10.
MasterTimebase Timing Requirements
Getting Started with Counter Applications in Software
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.
Note
For more information about programming counter applications and triggers in
software, refer to the
NI-DAQmx Help
or the
LabVIEW 8.x Help
.
t
p
= 50 ns minimum
t
w
= 23 ns minimum
t
w
t
w
t
p
