The Simrad SX90 is a long-range, low-frequency fish-finding sonar. It is specially designed for vessels where long range is criteria No.1.
The Simrad SX90 is a long range omnidirectional low frequency sonar. The SX90 is designed for medium and large sized fishing vessels.It was originally developed for purse seiners, but experience has proven that it is also well suitable for trawlers.
Simrad product catalogue
The SX90 is designed for fishing vessels of all sizes, both purse seiners and trawlers. The centre operational frequency is 26 kHz, but you can select any operational frequency from 20 to 30 kHz in steps of 1 kHz. The cylindrical multi-element transducer allows the omnidirectional sonar beams to be tilted electronically from -10 to +60° in 1° steps. This allows you to automatically track schools of fish, and to observe the whole water volume around the vessel. A stabilizing system is included for electronic pitch and roll compensation.
The SX90 provides a number of standard interface lines for communication with peripheral devices and sensors. Typical inputs are geographical information from a positioning system, vessel speed and current heading. By default, the SX90 uses a built-in motion sensor. For improved operational accuracy, an external motion reference unit (MRU) can be connected.
The SX90 offers the same user interface and operating software as our other sonars, echo sounders and catch monitoring systems. This enables easier and faster training of new users.
- The SX90 echo presentations are optimized for multiple displays. Provided that you have connected additional displays to your Processor Unit, you can use the Docking Views function to take any sonar view and place it on a separate display. When you move a view to another display, it will automaticallybe scaled for the best possible result.
- It is common for sonars to require many pings to build the various views in the echo presentation. On the SX90, all the sonar views in the presentation are built using the echoes from one single ping. This dramatically improves the update rate and provides better real-time information.
- The SX90 permits you to record real-time sonar situations. Previously, only screen captures were recorded. You can now record the real echoes during the normal sonar operation. This allows you to replay complete sequences. The playback contains the exact same echo information, and can be used for mission history, training or troubleshooting purposes.
- The tracking function has been improved. It can now use echo information from both the horizontal and vertical transmissions.
Great emphasis has been placed on an intuitive user interface and the best possible sonar presentations on a high resolutioncolour display. The SX90 is equipped with the celebrated signal processing software developed by Kongsberg Maritime. This includes Hyperbolic FM (HFM) transmissions. This pulse type is also known as "chirp". It ensures a clutter free picture with very high resolution in range. The signal processing and beamforming is performed in a fast digital signal processing system using the full dynamic range of the signals.
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