Installation manual

Simrad SP90
130
851-164510 / Rev.E
9.11 Alignment of the sonar picture
Independent of the hull unit orientation, the alignment is always
defined as:
• the angle measured clockwise from the bow to the 0 degrees
transducer mark.
The 0 degrees transducer mark is located outermost on the
mounting flange, and it is marked as a red “0”. Depending on
the transducer mounting, it can be located at any angle on the
mounting flange, not necessarily as shown in the illustration
below.
(CD16001G)
0° transducer
mark
Bow
0
Alignment
angle
Figure 37 Definition of the
alignment angle
Observe the following procedure to align the sonar picture.
1 Locate the 0 degrees transducer mark.
2 Estimate the approximate alignment angle (0 to 360
degrees) clockwise from the bow to the 0 degrees
transducer mark.
- The angle between each mounting bolt can be used as
an aid.
- 20 bolts standard version: 18 degrees between each
bolt.
- 24 bolts optional version: 15 degrees between each
bolt.