Counter Input Applications; Counting Edges - National Instruments DAQ X Series User Manual

Measurement
Buffered Edge Count
Buffered Pulse Width
Buffered Pulse
Buffered Semi-Period
Buffered Frequency
Buffered Period
Buffered Position
Buffered Two-Signal Edge Separation

Counter Input Applications

The following sections list the various counter input applications available
on X Series devices:
•
•
•
•
•
•
•
•

Counting Edges

In edge counting applications, the counter counts edges on its Source after
the counter is armed. You can configure the counter to count rising or
falling edges on its Source input. You also can control the direction of
counting (up or down), as described in the
Counting
sample clock.
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Table 7-1. Counter Timing Measurements
Implicit Timing Support
No
Yes
Yes
Yes
Yes
Yes
No
Yes
Counting Edges
Pulse-Width Measurement
Pulse Measurement
Semi-Period Measurement
Frequency Measurement
Period Measurement
Position Measurement
Two-Signal Edge-Separation Measurement
section. The counter values can be read on demand or with a
7-3
Chapter 7 Counters
Sample Clocked Timing
Support
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Controlling the Direction of
X Series User Manual