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Overview
To measure the frequency of an analog signal in hardware.
Description:
An analog signal can be acquired and analyzed in software to determine its frequency. However, in many situations it is desirable to measure the frequency of an analog signal in hardware. A counter cannot be used to directly measure the frequency of an analog signal. Using an analog comparison event, you can generate a digital trigger that can measure the frequency and period of an analog signal using a counter. This should work with any multifunction DAQ card that has an analog input and 2 counters or more.
This example is written in C# .NET 3.5. This example builds on the ContAcqVoltageSamples_IntClk and the MeasDigFreqBuffCont_LargeRange2Ctr shipping examples. See those examples for additional information.
To measure the frequency of an analog signal in hardware.
Description:
An analog signal can be acquired and analyzed in software to determine its frequency. However, in many situations it is desirable to measure the frequency of an analog signal in hardware. A counter cannot be used to directly measure the frequency of an analog signal. Using an analog comparison event, you can generate a digital trigger that can measure the frequency and period of an analog signal using a counter. This should work with any multifunction DAQ card that has an analog input and 2 counters or more.
This example is written in C# .NET 3.5. This example builds on the ContAcqVoltageSamples_IntClk and the MeasDigFreqBuffCont_LargeRange2Ctr shipping examples. See those examples for additional information.
Additional information:
Measuring the Frequency of an Analog Signal in Hardware
Analog Input Period Counts Using Analog Comparison Event
**This document has been updated to meet the current required format for the NI Code Exchange.**
Example code from the Example Code Exchange in the NI Community is licensed with the MIT license.
