DATASONICS SIS-1500, System Manual

Page: 66 / 110

3-30 DATASONICS
Volume I System Manual June 1998
5. While observing the heading indication in the tow vehicle Heading and
Course display, point the tow vehicle’s nose in different directions until
the indication in the display is approximately centered. Then swing the
nose to the right and to the left approximately 90 degrees each way.
Verify that the heading indication changes accordingly. An example of
heading data in the tow vehicle Heading and Course display is shown in
Figure 3-20.
Figure 3-20 Displayed Heading and Course Data
Moving the tow vehicle’s nose to the right causes the heading indication to
sweep to the right, and moving it to the left causes the heading indication to
sweep to the left.
6. Clear the Console Check box.
7. Click Cancel to close the Sonar Diagnostics box.
Launching the Tow Vehicle
When the predeployment tests are complete, the tow vehicle is ready to be
launched. The tow vehicle should be launched tail first from the stern of the
vessel using a boom or an A-frame and winch, or from the bow using a boom.
Perform the steps listed below to launch the tow vehicle and to verify its
stability and operation. If the high voltage power supply has been turned off,
turn it back on at this time by turning the HIGH VOLTAGE key switch on the
digital multiplexer to the right.