Testing the Depth Sounder
Establish a performance baseline by operating the depth
sounder with the transducer directly in the water. The results
of this test are used as a basis of comparison to determine
the best in-hull location for the transducer.
1. Anchor the boat in at least 15 m
(50') of water. (If you have a
digital unit, conduct this test in
water as deep as that for which
the depth sounder is rated.)
2. Tape the transducer to a pole,
cable side up, and hold it over
the side of the boat (Figure 19).
The cable side must be parallel
to the surface of the water.
3. Observe the depth sounder
performance. Record the
depth reading.
Testing at the Selected Location
While the boat is anchored, use one of the methods below to
test the depth sounder with the transducer at the selected
location. If the test readings differ markedly from the base-
line or there is almost no reading, you will need to find anoth-
er location. If the two readings are reasonably similar, mark
the spot on the hull and proceed with the installation.
Figure 19
33
T
RANSDUCER
S
ELECTION
P23
Transom/In-
Hull
Transducer
Thru-Hull
Transducer
IMPOR TANT!!!!
Please read the instructions completely
before proceeding with the installation.
P23 Transom/In-Hull Transducer
Applications
• Powerboats with outboard, inboard / out-
board, or jetdrives. Not recommended for
use with large or twin screw inboard motors.
• Allows sound beam to be oriented vertically
on hulls with a deadrise angle of up to 30°.
• Adjusts to transom angles from 3-20°.
Thru-Hull Transducer Applications
• Inboard boats, sailboats, wooden boats, or
metal hulled boats.
If, after completely reviewing the transducer
installation instructions, you find that the sup-
plied transducer is not appropriate for your ves-
sel, please contact NorCross at 888-667-2767, or
visit us on the internet at www.norcrossma-
rine.com for exchange information. You may
exchange your new and unused transducer for
another type, but keep in mind that some trans-
ducers may have additional costs.
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