72
INSTRUCTIONS FOR ADJUSTABLE TRANSDUCERS (OPTION)
The adjustable transducer option allows the 600k transducers in the side scan fish to be adjusted so that
vertical walls (pilings) and boat hulls (bottoms) can be scanned (two different transducer adjustments).
Adjustment of the transducers is accomplished by removing the thumbscrew from the top of the fish (tail
section) and rotating the fin section to the appropriate position which is marked on the fish.
Note: position the fish so that no weight (pressure) is on the fins or tail section when removing or
installing the thumb screw. The very end of the tail section should be supported with your hand so the
holes can be properly aligned. Do not turn the tail section in a complete circle (360 deg) which could
damage the internal cabling.
Bottom Being Side Scanned
Transducers at -10 deg
Hull Bottom Right
In this position, the right 600K transducer is at a +10 degrees from the horizon. This is the position that is
used for scanning the bottom of a boat on the right side of the fish. The PC is set up to display right channel
only; the left transducer output is ignored. The recommended Range setting on the PC is 10 m. The fish is
towed 1-2 m below the bottom of the boat hull. In most cases, two passes along the length of the boat hull
is required, one pass along one side of the hull and a pass going the other direction along the other side.
nose end
Boat Hull Being Side
Scanned
Right Transducer at +10 deg
nose end
boat hull
(end view)
The tail section can be rotated to five different positions: Normal, Hull Bottom Right, Hull Bottom Left,
Vertical Right, and Vertical Left. A decal on the fish shows each position.
Normal
In this position both 600K transducers are at -10 degrees from the horizon. This is the position that is used
for normal bottom side scanning.
Thumb Screw
Tail Section
Support Point
Left Transducer
Decal
Summary of Contents for SSS-100K PC
Page 51: ...51 Left Blank ...
Page 55: ...55 Left Blank ...
