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3.12 Performing Pre-deployment Checks
The pre-deployment checks should be performed after the system is activated and before the towfish is
deployed. These checks verify navigation, and Heading, Pitch Role depth sensor data is correct and is being
displayed in DISCOVER status tabs and recorded correctly:
1. Activate the system as described above.
CAUTION! Do not allow the transducer arrays on the towfish to
continuously transmit in air for an extended period as damage to the
transducer arrays could occur.
2. In the DISCOVER 4125 Main window, click the Towfish Control tab on the Lower Control panel.
This tab is shown in FIGURE 3-14.
Figure 3-14: DISCOVER 4125 Towfish Control Tab
3. Select the High Sonar On and Low Sonar On check boxes.
The transducer arrays on the towfish should begin transmitting and data should begin scrolling on the
Sonar display in the DISCOVER 4125 Main window.
4. Start recording a file while performing the pre-deployment test below, and then play back the file
to verify that the SS data and navigation information is present
5. Rub the port and starboard transducer arrays (as seen in FIGURE 3-15) while observing the Sonar
display in the DISCOVER 4125 Main window.
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