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562x Dither Example - Spectral Measurements Toolkit (SMT)

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Filename: 562x_dither_example_-_smt.vi
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This example demonstrates how to enable and disable dither on the PXI-562x (PXI-5620, PXI-5621) high speed digitizers. Spectral Measurements Toolkit by default will enable dither for both of these digitizers, which shows up as noise in the lower portion of the usable frequency range. When using these digitizers to make measurements on signals that occupy this portion of spectrum, it may be necessary to disable dither in order to see the signals on a power spectrum.

Note: When using a PXI-5620 in combination with a PXI-5600 RF Downconverter (i.e. PXI-5660 RF Signal Analyzer), then it is not necessary to disable dither, even when the signals to be measured fall in the same frequency range as the dither. This is because the input signal will be shifted in frequency by the PXI-5600 before being digitized by the PXI-5620.

Requirements


Filename: 562x_dither_example_-_smt.vi

Software Requirements


Application Software: LabVIEW Full Development System 6.1
Toolkits and Add-Ons: NI Spectral Measurements Toolkit 1.1.2
Language(s): LabVIEW

Hardware Requirements


Hardware Group: RF
Hardware Model: PXI-5620, PXI-5621
Driver: NI-SCOPE 2.1.4

 
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