Simrad SN90, Operator'S Manual

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381295/B
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Motion Reference Unit
A motion reference unit (MRU) measures the vessel’s pitch and roll movements
in the sea. Depending on make and type, some sensors will also measure heave.
The information provided by the motion sensor is used by the SN90 to stabilize
the beams and the echo presentation.
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Installation Parameters
The
Installation Parameters
pages allow you to define the relationship between the
physical locations of the various sensors and the SN90 transducer. All relevant
system units and sensors must be defined with their physical offset values in
relation to the defined
Ship Origin in the vessel’s coordinate system. You will only
need to define these installation parameters once.
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Synchronization
The purpose of the
Synchronization
parameters is to set up the SN90 to operate
alone, or as a master or slave in a synchronized system. Synchronization is
required in order to avoid interference if the SN90 is used simultaneously with
other hydroacoustic instruments within the same frequency range.
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Units
The SN90 user interface presents many measurements. These measurements are
for example related to depth, range and distance. From the
Units
page you control
which units of measurements that are used.
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Operating Panel
The Operating Panel must be connected to the Processor Unit through a serial port.
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Beam Direction
The purpose of the
Beam Direction
function is to control the visual direction of the
presentation in the Inspection views.
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Hull Unit Configuration
A hull unit may be provided as an optional method to lower and hoist the
transducer. If a hull unit is used, you must use the options on the
Hull Unit
Configuration
page to specify this. You can enable or disable the use of a hull unit.
Once enabled you can choose which hull unit to use.
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System Protection
The
System Protection
parameters allows you to define your own warning limits
for the SN90.
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Transceiver Upgrade
The Transceiver Unit is fitted with 8 transceiver boards. Transceiver board
firmware upgrades may be a part of a SN90 software update. For more information,
refer to the relevant software release note.
Simrad SN90 Operator Manual