Defining The Middle Position Of The Transducer - Kongsberg Simrad SU90 Operator's Manual

Transmission is inhibited due to a high voltage in the
power supply.
•
Tx Inhibit Firmware
verify compatibility with the operating software. The alarm is provided to make
sure that the functionality offered by the SU90 system can be supported by the
transceiver boards. A mismatch will trigger a "firmware not accepted" alarm.
•
Tx Inhibit Operation Mode
sure that the SU90 system does not transmit ("ping") when you have chosen
Replay or Inactive mode.
• : When the transducer is fully lowered, the speed of the vessel must
Vessel Speed
not exceed the maximum speed permitted for the hull unit. This maximum speed
depends on the physical size of the transducer, the mechanical construction of
the hull unit, and how far down the transducer has been lowered. The
page allows you to define a limit that triggers an alarm if the maximum
Protection
speed is exceeded.
5 At the bottom of the page, select
6 Continue your work in the
Related topics
Defining settings related to user preferences and individual customizing, page 95

Defining the middle position of the transducer

The hull unit is used to lower the transducer down below the ship's hull when the SU90
system shall be used. When the SU90 system is turned off, the transducer is hoisted for
protection. The SU90 system allows you to define a middle position for the transducer.
Prerequisites
The physical properties of the hull unit installation are known.
The correct type of hull unit is selected.
The vessel is berthed or at sea.
Context
The middle position is not a fixed length. The physical middle position depends on
which type of hull unit you are using with the SU90 system.
Retracting the transducer to a middle position may be useful if you use the SU90 system
simultaneously with other sonars. A higher position will permit you to increase the
vessel speed. If you operate in very shallow waters, you may also reduce the risk
of hitting bottom. However, placing the transducer immediately under the hull may
increase the flow noise.
381291/D
: The firmware on the transceiver boards is checked to
: This feature activates the system protection to make
to save your settings.
Apply
dialog box, or select
Installation
Operating procedures
System
to close it.
OK
105