ITT i-ALERT2, Application Manual

Page: 43 / 64

i-ALERT2 Application Guide 43 of 64
FFT AND TWF DATA
The FFT graph and TWF can be zoomed in or out using the same touchscreen commands as described in the “Trending”
section. To display the latest dataset from each different sensor axis, simply tap the “Axial” or “Horizontal” buttons at the
top of the spectrum. See figure 39. To request an updated FFT/TWF, tap the refresh (circular arrow) at the top right of the
page. This will bring up a new menu with several options to choose from. These options are; request new FFT, download
stored FFT, and download alarm FFT’s. (The i-Alert2 can store up to eight alarm FFT’s, and one user requested FFT).
Figure 39: Switch between sensor axes or request updated dataset