Simrad SC90, Installation Manual

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419050/B
321
Defining the installation parameters for the transducer
Information from a few key sensors are vital for the SC90 accuracy. In order to achieve
maximum accuracy, the physical locations of these sensors - normally referred to the
Ship Origin - must be recorded in the SC90 setup. For future reference, the offset values
for each sensor is recorded.
Prerequisites
For the accurate locations of the transducer and the
global positioning system (GPS) antenna, you need
the detailed vessel drawings. The information about
the installation angles must be retrieved from the
reports provided by the personnel that did the actual
installation.
Neither tools nor instruments are required. The SC90
is turned on, and it is working normally.
Context
The physical location of the SC90 transducer is
important for the SC90 data accuracy. The locations
of the transducer and the Global Positioning System
(GPS) antenna must be referenced to a common
Ship
Origin . For the SC90, the Ship Origin is positioned
at the vessel’s stern. This is necessary to get the
Own
ship
and
Seine
markers positioned on the vessel’s track
line, which is generated from the vessel’s stern.
The physical location of the motion reference unit
(MRU) is not important for the SC90 operation. Only
the roll and pitch outputs are used, and these are not location dependant.
Procedure
1 Observe the
Status
parameter dialog box in the bottom right corner of the SC90
presentation.
2 Make sure that the dialog box presents the current information from the navigation
sensors: Position, Heading and Speed.
3 Open the
Installation
menu.
a Select the
Setup
tab to open the menu.
b Select
Test
on the
Setup
menu to open the
System Test
menu.
c Select
Installation menu
to open the menu.
d Observe that the
Installation
menu opens across the top of the SC90
presentation.
4 Select
OwnShip
→
Instrument Position Offsets
→
Transducer
to open the
Transducer
Offset Positions
parameter dialog box.
Setting to work