The purpose of this publication is to provide the descriptions, procedures and detailed parameter explanations required to allow for safe and efficient use of the ST90 system. The publication also provides you with a thorough understanding of the parameters and adjustments provided by the ST90 system.
For the ST90 system to use and offer correct navigational information, one or more external sensors must be connected. Typical sensors are those providing navigational information (heading, speed or geographical position). To set up the communication parameters on the serial and LAN ports, use the I/O Setup page. To select which sensors to install, use the Sensor Installation page. The Sensor Configuration page allows you to define a datagram priority, so that the information from the "most reliable" sensor is used by the ST90 system. You can also define manual values in case a sensor is unserviceable, or not installed.
For any sensor interface to work, the communication parameters must be set up correctly. The ST90 software automatically scans the Processor Unit to locate and identify the available communication ports. Once the software has established a list of valid interfaces, you can set up and control the communication parameters.
For the ST90 system to use and offer correct navigational information, one or more external sensors must be connected. Typical sensors are those providing navigational information (heading, speed or geographical position). To select which sensors to install, use the Sensor Installation page. Your current position is shown on the top bar if you have enabled this in the Display Options dialog box.
In order to operate correctly, the ST90 system requires input from a speed log. In most cases a suitable sensor is already installed on the vessel. A global positioning system (GPS) with a compatible output format can also be used. To select which sensors to install, use the Sensor Installation page. The vessel speed is shown on the top bar if you have enabled this in the Display Options dialog box.
In order to operate correctly, the ST90 system requires input from a course gyro. In most cases a suitable course gyro is already installed on the vessel. A global positioning system (GPS) with a compatible output format can also be used. To select which sensors to install, use the Sensor Installation page. The current heading is shown on the top bar if you have enabled this in the Display Options dialog box.
With multiple sensors connected to the ST90 system, many of them will provide the same datagrams. We cannot expect that these datagrams provide the same information. The Sensor Configuration page allows you to define a datagram priority, so that the information from the "most reliable" sensor is used by the ST90 system. You can also define manual values in case a sensor is unserviceable, or not installed.
The information from a motion reference unit (MRU) (normally heave, roll and pitch information) is imported into the ST90 system to increase the accuracy of the echo data. The ST90 system is provided with a built-in motion sensor to provide electronic stabilization of the sonar beams. For improved operational accuracy, an external motion reference unit (MRU) can be used. This task is only applicable is you are using an external motion reference unit on your ST90 system.
The information from a motion reference unit (MRU) (normally heave, roll and pitch information) is imported into the ST90 system to increase the accuracy of the echo data. The ST90 system is provided with a built-in motion sensor to provide electronic stabilization of the sonar beams. It is placed inside the Motor Control Unit.
If you want to use the ST90 system as a master or slave in a synchronized system, you must set it up for such operation. To do this, you must select which communication port to use for the synchronization interface, and you must select the requested synchronization mode.
Position information from external objects such as buoys, fish aggregating devices and other similar items can be imported into the ST90 system.
The technical specifications summarize the main functional and operational characteristics of the ST90 system. They also provide information related to power requirements, physical properties and environmental conditions.
The ST90 system can send and receive information to and from several different peripherals. All transmissions take place as datagrams with data sentences. Each datagram has a defined format and length.
