Location Requirements - Raymarine DownVision CPT-70 Installation Instructions Manual

3.7 Location requirements

The guidelines below should be followed when
selecting a location for your transducer.
For best performance the transducer should be
installed in a location with the least turbulence and
aeration.
Important: Do NOT install the transducer in-line
with trailer rollers, your vessel's engine intake or
discharge openings.
• The transducer should be installed as close to the
centerline of the vessel as possible.
1
3
5
1 Planing
Outboard or I/O — mount forward and to
hull
the side of the propeller(s)
2 Planing
Inboard — mount forward of the
hull
propeller(s) and shaft(s)
3 Planing Stepped hull — mount on the first step as
hull far aft as possible
4 Displace- Displacement hull — mount
ment hull approximately 1/3 of the way along
the length of the hull, measured along the
waterline
5 Keel Fin keel — mount forward of the keel,
sailboat ensuring that the keel will not obstruct the
transducers wide beam width
6 Keel Full keel — mount away from the keel
sailboat at a location with minimum dead rise,
ensuring that the keel will not obstruct the
transducers wide beam width
• The transducer should be installed away from
any protrusions such as transducers, steps, ribs,
strakes, or rows of rivets.
1
2
Planning the installation
2
4
6
D12952-1
3
4
D12636-1
1 Step
2 Rib
3 Row of rivets
4
Strake
• The transducer must be installed in the correct
orientation, as identified on the deadrise / fairing
block.
• The transducer should be installed in a location
where there is sufficient clearance inside the hull
to fit the nut and have at least 100 mm (4 in) of
headroom to allow for withdrawal.
• The transducer should be installed so that the
bottom face of the transducer is pointing straight
down.
17