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Manual Image Calibration

Select the File/Image Calibration menu item to bring up the Image Calibration

dialog box. An automated calibration can be performed using the Auto-Calibration

icon on the desktop discussed earlier in this chapter.

The sonar contains two arrays that must be calibrated to synchronize the

imagery between them. To calibrate the image, first make sure that the sonar is

thermally stabilized to the ambient water temperature, then use the pan and tilt

controls to point the sonar so that its beam is grazing a relatively flat surface,

such as a piling or the seafloor, and displaying a diagonal line across the image

display.

If the diagonal line has a break in it, as shown in the left-hand figure below,

bring up the Image Calibration dialog box, and move the slider until a single,

unbroken line is displayed. Click OK to save the calibration value.

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Blueview BV5000 Spezifikationen Seite 27