FFT Page

RF Data Converter Interface User Guide (UG1309)

Document ID
Release Date
1.4 English

Click Acquisition in the ADC settings page, or Generation in the DAC settings page, to open the FFT page. In the RF-DAC FFT page, the single tone and dual tone generator is embedded in the software. To generate a complex modulated signal, load a test vector file. There are variations of sub-menus in this page, including signal characteristics, customizing FFT plot, windowing function, test vector input, and output. When decimation or interpolation is enabled in the RF-ADC or RF-DAC data path, with a value more than 1 (bypass), Eff.Fs and Fs show different values in this table. Fs indicates the sampling frequency of observed RF-ADC or RF-DAC, Eff.Fs indicates the sampling frequency of original data stream (base band) after decimation or before interpolation. The X-axis (frequency) of the FFT plot reflects back the Eff.Fs. The following figure shows the RF-ADC FFT page.

Figure 1. RF-ADC FFT Page

The following figure shows the Zoom Tools on the FFT page. Use the default Zoom Tools or edit the axis range to directly configure the start and/or end values for best plot observation.

Figure 2. FFT Zoom Tool