P/N 95P-6001-00 (October 2020)
Wayfinder DVL Guide
Page 22
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
FFT Tab
Observation of the FFT acoustic interference plots will provide information about interference to the Way-
finder DVL. The
Wayfinder Tools
software provides the user with a frequency domain plot (~100% band-
width) of the Wayfinder’s four receiver channels during a sampling interval.
To view the FFT data
:
1. Start
Wayfinder Tools
and connect to the Wayfinder DVL.
2. Click on the
FFT
tab. It takes a few seconds for the FFT plots to display.
3. Select the
Averaged
button to view a moving average of the last 30 FFTs.
4. Move devices that may cause interference closer to the Wayfinder. Observe changes in the plots.
Interference will show as spikes (see
for more information).
5. If any of the results show interference, contact TRDI Field Service for more information.
