Interphase Color Twinscope Operation Manual page 14

Transom Mount Locations
Cables
Transducers
Cables
Twin Outboards
Bracket
Fasten Spray Shield
Axle
with 4 screws & nylok
washers as shown
Rear
View
Rubber
Grommet
Transducer must be
mounted vertically
Fasten Spray Shield Mounting
with 4 screws & nylok Bracket
washers as shown
Side
View
Spray
Shield
Waterline
*
*
Note: The Forward Horizontal Transducer must be able to
scan beneath the hull. The deadrise angle of the hull must be
less than 10 degrees in order for the forward horizontal scan
to sweep beneath the hull. Alternately, the transducer can be
mounted at or below the lowest point on the hull.
The transducer can be installed on either side of an outboard
18 - 24"
or inboard/outboard engine, or between twin outboards. For
single engine installations, normally 18" to 24" outboard of
the propeller center line is acceptable and the down stroke
side of the propeller is preferred. Choose a location where
water flow is smoothest. For dual engine installation, just off
the center line is usually acceptable.
Because the transducer rotates back and upwards when the
bracket releases, it must be mounted in a location where there
is sufficient clearance and headroom to allow the full release.
Attach the Transducer & Spray Shield to the Bracket
Locate the Stainless Spray Shield inside the transducer's
stainless mounting ears. Make sure the spray shield is
orientated as shown in sketch below. Then, assemble the
stainless kick-up bracket to the transducers using the 4
screws, washers and lock nuts provided. Place the rubber
grommet around the transducer cable and slide it into the slot
in the spray shield. The bracket arms must be mounted
Spray Shield
outside the stainless steel mounting ears of the transducer. Do
not fully tighten the lock nuts at this time. Tighten them after
the transducer is mounted and the spray shield is positioned.
Waterline
Position the transducer so that it is perpendicular from side to
side and make sure the wider curved end is pointed towards
the front of the boat.
Mounting the Transducer to the Boa
After you have selected the optimum mounting location and
have assembled the mounting bracket to the transducer,
mount the bracket onto the hull as shown on the right.
Make sure to position the transducer so that it is level in the
fore and aft direction and so it will look straight down. Check
the location of your boat's waterline and position the flat top
surface of the transducer so that it is parallel to the waterline
as shown below.
Note: If the transducer is not mounted so that its fore and aft
direction is parallel to the surface, then the forward looking
Boat Hull
display will be distorted and flat bottoms will appear to be
14
Minimizes the chance that aerated water will flow
across the transducer's frontal nose area.
Optimizes the transducer's view of the area
ahead and directly below the boat.
t