3-30 DATASONICSVolume I System Manual June 19985. While observing the heading indication in the tow vehicle Heading andCourse display, point the tow vehicle’s nose in different directions untilthe indication in the display is approximately centered. Then swing thenose to the right and to the left approximately 90 degrees each way.Verify that the heading indication changes accordingly. An example ofheading data in the tow vehicle Heading and Course display is shown inFigure 3-20.Figure 3-20 Displayed Heading and Course DataMoving the tow vehicle’s nose to the right causes the heading indication tosweep to the right, and moving it to the left causes the heading indication tosweep to the left.6. Clear the Console Check box.7. Click Cancel to close the Sonar Diagnostics box.Launching the Tow VehicleWhen the predeployment tests are complete, the tow vehicle is ready to belaunched. The tow vehicle should be launched tail first from the stern of thevessel 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 itsstability 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 thedigital multiplexer to the right.
