Four Channel Gain Function

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Overview

 Integer math scaling of a four channel array in LabVIEW FPGA.

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 Description 

This example uses integer math to scale an array of four input channels in a LabVIEW FPGA application.  This example will not work within a Single-Cycle Timed Loop, as it uses a Single-Cycle timed loop to index through different channels.Using integer math scaling, the gain value (in percentage) is multiplied by (2^{20)/100 = 10486.  The scaled gain value is then multiplied by the corresponding channel value, and the result is then multiplied by 2}(-20).This method of multipling and then dividing by a large power of 2 is a common way of working with integer math in LabVIEW FPGA.

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Requirements: LabVIEW 2012 (or compatible), Real-Time Module. Hardware: none.

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Steps to Implement or Execute Code:

1. Put Input.
2. Set Gain.
3. Get Output.
4. Write down the results or use as subVI.

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Additional Information or References:

 

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**This document has been updated to meet the current required format for the NI Code Exchange.**