National Instruments 636 Series User Manual

© National Instruments | 7-3
X Series User Manual
Counter Input Applications
The following sections list the various counter input applications available on X Series devices:
•
Counting Edges
• Pulse-Width Measurement
• Pulse Measurement
• Semi-Period Measurement
• Frequency Measurement
• Period Measurement
• Position Measurement
• Two-Signal Edge-Separation Measurement
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 can also
control the direction of counting (up or down), as described in the
Controlling the Direction of
Counting
section. The counter values can be read on demand or with a sample clock.
Refer to the following sections for more information about X Series edge counting options:
•
Single Point (On-Demand) Edge Counting
• Buffered (Sample Clock) Edge Counting
Buffered Frequency Yes Yes
Buffered Period Yes Yes
Buffered Position No Yes
Buffered Two-Signal Edge Separation Yes Yes
Table 7-1. Counter Timing Measurements (Continued)
Measurement
Implicit Timing
Support
Sample Clocked
Timing Support

National Instruments 636 Series Specifications

General

Brand	National Instruments
Model	636 Series
Category	Data Loggers
Language	English