DATASONICS SIS-1500, System Manual

Page: 62 / 110

3-26 DATASONICS
Volume I System Manual June 1998
Predeployment Checks
The predeployment checks are recommended in order to verify that the
system is functioning properly on deck before the tow vehicle is deployed.
The checks are easy to perform and consist of three procedures: rubbing the
transducer arrays to induce an acoustic signal which can be received and
displayed while allowing the transmitted pulse to be felt with the hand;
activating the Chirp pattern diagnostics to check the sonar receivers; and
verifying the receipt of the navigation and sensor data and the operation of
the sensors.
Rub Test
With the tow vehicle activated, perform the steps listed below to check the
sonar transmitters and receivers using the rub test technique.
1. With one hand rub the port transducer array back and forth ten or fifteen
times. It should be possible to feel the transmitted pulses. Refer to
Figure 3-15 for the location of the transducer arrays.
Figure 3-15 Location of the Port and Starboard Transducer Arrays
2. Examine the Port Sidescan Sonar display in the Main window. The
display should look similar to the one shown in Figure 3-16 with
horizontal streaks shown running across the display.
3. Rub the starboard transducer array ten or fifteen times and feel for the
transmitted pulses.
PORT TRANSDUCER
ARRAY
STARBOARD
TRANSDUCER
ARRAY
(OPPOSITE SIDE)