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Document Type: Example Program
NI Supported: Yes
Publish Date: Sep 6, 2006

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Performing Two Simultaneous DSA Measurements in FFT Analyzer Mode

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Filename: nidsa_two_measurements.zip
Requirements: View

This CVI programming example simultaneously reads and displays two measurements in NI-DSA FFT analyzer mode. The user interface has two graphs, each of which displays an independent measurement from your DSA device. Use the menus to the left of each graph to select the types of measurements to display, and the display parameters, such as real/imaginary values, logarithmic/linear units, and so on.

To use this example, connect signals to analog input channels 0 and 1. In general, you get the most meaningful time-domain data by disabling dB units and looking at only the real portion of the values. For analyzing frequency-domain measurements, it is usually best to display signal magnitudes in dB units.

For windowing, baseband span, and averaging, use the controls on the left side of the interface panel. You must click the Reconfigure button for changes made to these settings to take effect.

Requirements


Filename: nidsa_two_measurements.zip

Software Requirements


Application Software: LabWindows/CVI Full Development System 5.0.1
Language(s): C

Hardware Requirements


Hardware Group: Dynamic Signal Analyzers (DSA)
Hardware Model: PXI-4552, PXI-4551, PCI-4552, PCI-4551
Driver: NI-DSA 1.1.1

 
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This example program (this "program") was developed by a National Instruments ("NI") Applications Engineer. Although technical support of this program may be made available by National Instruments, this program may not be completely tested and verified, and NI does not guarantee its quality in any way or that NI will continue to support this program with each new revision of related products and drivers. THIS EXAMPLE PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND AND SUBJECT TO CERTAIN RESTRICTIONS AS MORE SPECIFICALLY SET FORTH IN NI.COM'S TERMS OF USE (http://ni.com/legal/termsofuse/unitedstates/us/).