DATASONICS SIS-1500, System Manual

Page: 52 / 110

3-16 DATASONICS
Volume I System Manual June 1998
Adjusting the Down-Look Angle
The down-look angle of the port and starboard transducer arrays can be
adjusted from 0
°
to 20
°
in 10
°
increments. Perform the steps listed below to
adjust the angle.
1. Locate the forward and aft down-look angle adjusting screws shown in
Figure 3-6.
2. Loosen each screw until the screw shoulder is free of the housing.
3. Grab each screw simultaneously, and then move the screws into the
required, corresponding notches.
The notch closest to the top of the tow vehicle is the 0
°
angle; the middle
notch, the 10
°
angle; and the notch closest to the bottom of the tow
vehicle, the 20
°
angle.
4. Retighten both screws.
Figure 3-6 Transducer Array Down-Look Angle Adjustment
FORWARD DOWN-LOOK
ANGLE ADJUSTING SCREW
AFT DOWN-LOOK ANGLE
ADJUSTING SCREW