Texas Instruments ADS9817EVM-PDK, User Manual, Page: 14 / 29

5.5 Initial Required Setup on the Capture Tab
In Figure 5-8 , the device and EVM are powered up and configured. In this step, the necessary updates to the
Capture settings are made to capture the time domain data and to get a good frequency domain result. First, the
EN SYNC button is pressed to synchronize the communication channel. Next, update the number of samples to
at least 32k to get good frequency domain results (for example, accurate FFT display, SNR data, and THD data).
Finally, select the Hanning type window to eliminate spectral leakage in the FFT result.
When these changes are made, press the Start Capture button to collect time domain and frequency domain
data. Select the appropriate tab to view data for channel 1 or channel 2.
1. Select “capture tab for
me domain and FFT
analysis
2. Press “EN SYNC”
3. Choose at least 32k
samples for good FFT results.
4. Press start capture to
collect data
5. Measured SNR,
SINAD, and THD shown
here.
Figure 5-8. Initial Required Setup on the Capture Tab
EVM Operation www.ti.com
14 ADS9817EVM-PDK Evaluation Module SBAU416 – NOVEMBER 2022
Submit Document Feedback
Copyright © 2022 Texas Instruments Incorporated