Edgetech 4125 - Figure 3-15: Performing a Rub Test; Figure 3-16: Rub Test Screen Shot

3-20 3.0 SETUP AND ACTIVATION
4125 SIDE SCAN SONAR SYSTEM 0004823_REV_F
Figure 3-15: Performing a Rub Test
6. You should observe streaks or noise spikes in the waterfall display, as seen in FIGURE 3-16.
Figure 3-16: Rub Test Screen Shot
7. Verify that the heading, pitch, and roll sensors are working correctly by rotating, tilting, and rolling
the towfish while observing the Heading, Pitch, and Roll displays in the Lower Indicator bar in the
DISCOVER 4125 Main window.
8. Verify that the Pressure display indication is at or nearly zero. The pressure sensor can be zeroed
on deck in DISCOVER 4125 software under External Device Controls.