National Instruments DAQ X Series User Manual

Chapter 7 Counters
© National Instruments 7-7 X Series User Manual
Figure 7-5 shows an example of a single pulse-width measurement.
Figure 7-5. Single Pulse-Width Measurement
Implicit Buffered Pulse-Width Measurement
An implicit buffered pulse-width measurement is similar to single
pulse-width measurement, but buffered pulse-width measurement takes
measurements over multiple pulses.
The counter counts the number of edges on the Source input while the Gate
input remains active. On each trailing edge of the Gate signal, the counter
stores the count in the counter FIFO. A DMA controller transfers the stored
values to host memory.
Figure 7-6 shows an example of an implicit buffered pulse-width
measurement.
Figure 7-6. Implicit Buffered Pulse-Width Measurement
SOURCE
GATE
Counter Value
Latched Value
1 0
2
2
SOURCE
GATE
Counter Value
Buffer
10 3
3
2
212
3
3
2
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National Instruments DAQ X Series Specifications

General

Brand	National Instruments
Model	DAQ X Series
Category	I/O Systems
Language	English