Simrad SC90, Installation Manual

Page: 317 / 544

419050/B
315
Aligning the SC90 presentation to the direction of the
transducer (SC90)
When the installation trunk is mounted, it may not be positioned with the mounting holes
in the right directions. When the hull unit is placed on the trunk, the "forward" mark
on the transducer shaft sleeve - and thus also the transducer - are both misaligned. To
obtain accurate SC90 presentations, this must be adjusted. Note that this task is only
relevant for the SC90 Hull Unit.
Prerequisites
The SC90 is installed as specified
in this manual.
• The SC90 is turned on, and it is
working normally.
• The SC90 is in Normal mode, but
TX Power
is set to Off to prevent
transmission.
• The transducer is retracted to its
upper position.
• The vessel is berthed or at sea.
Neither tools nor instruments are
required.
Caution
You must never set the SC90 to
"ping" unless the transducer is
submerged in water. The transducer
may be damaged if it transmits in
open air.
Illustration:
A
Bow
B
This is the alignment angle
C 0
°
transducer mark
Context
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° 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.
Setting to work