Texas Instruments ADS1194, User Manual, Page: 23 / 57

www.ti.com
Using the ADS1298ECG-FE Software
23 SBAU171D – May 2010 – Revised January 2016
Submit Documentation Feedback
Copyright © 2010–2016, Texas Instruments Incorporated
ADS1298ECG-FE/ADS1198ECG-FE
3 - FFT Analysis
Pressing the FFT Analysis button pulls up the FFT Analysis window shown in Figure 24 . This window
provides calculated parameters obtained from the collected data that may be useful during evaluation.
One of the values included in this analysis is the channel-to-channel noise.
Figure 24. FFT Analysis: Input Short Condition
4 - User-Defined Dynamic Range
This section enables the user to examine the SNR of a specific channel within a given frequency band
defined by
Low Frequency and High Frequency . The SNR displayed in this window shows under the
Dynamic Range heading as Figure 25 illustrates.
Figure 25. Changing the User-Defined Dynamic Range for Channel 1
5 - Input Amplitude
This field is a user input that is important for accurately calculating the CMRR of each channel.
6 - Zoom Tool
As with the Analysis, Histogram, and Scope tool, this zoom function allows a closer examination of the
FFT at frequencies of interest, as shown in
Figure 26 .