FPGA Math & Analysis VIs (FPGA Module)

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LabVIEW FPGA Module 8.2 Help
August 2006

NI Part Number:
371599B-01

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Use the FPGA Math & Analysis VIs to perform math and analysis operations in FPGA VIs.

Note This palette is specific to FPGA targets.

Palette Object	Description
Analog Period Measurement	Calculates the period of an evenly sampled periodic signal using threshold crossing detection.
Butterworth Filter	Filters an input signal using an IIR Butterworth filter.
DC and RMS Measurements	Calculates the DC (Mean) and/or RMS values of an input signal. You also can use this VI to calculate the intermediate Sum, Mean Square, and Square Sum values in order to save FPGA resources.
Look-Up Table 1D	Provides a general-purpose block of initialized memory. Use look-up tables to store waveforms for signal generation, to model nonlinear systems, and for arithmetic computations. If you use the Look-Up Table 1D Express VI in a single-cycle Timed Loop, wire the outputs directly to uninitialized shift registers or feedback nodes. The Look-Up Table 1D Express VI takes an entire clock cycle to execute in a single-cycle Timed Loop.
Sine Generator	Generates a point-by-point sine wave using direct digital synthesis. The synthesis runs continuously from the top-level FPGA target clock to produce an accurate real-time frequency. Each execution of this VI returns the most recent sample produced by the underlying synthesis engine.

Subpalette	Description
Control VIs	Use the Control VIs in FPGA VIs to create control applications for FPGA targets.
Saturation Arithmetic VIs	Use the Saturation Arithmetic VIs to handle or avoid integer overflow when performing mathematical operations. You can configure these VIs to return a maximum or minimum value if an overflow condition occurs instead of performing modular arithmetic.
Utilities VIs	Use the Utilities VIs in FPGA VIs to perform various tasks such as detecting state changes of Boolean inputs, detecting zero crossings, delaying the input value, limiting the valid range of a signal, and performing linear interpolation.

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