Simrad FS70 -, Operator'S Manual

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FS70 Trawl Sonar System
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974-24007001/5.0
3.2.2 Sonar Operation:
3.2.2.1 Selecting the Scan Mode:
DATSS supports the following scan modes:

Polar: used to allow the sonar scan for up to 360 degree.

Sector: used to allow the sonar scan in a sector less than 180 degree.

Net opening: used to allow the sonar scan in a sector less than 216 degree to observe the
trawl net.

Sounder: used to lock the sonar transducer to 180 degree angle. The angle is not
adjustable.

Smooth sounder: the same function as Sounder, except the horizontal pixel and the
vertical pixel has one to one aspect ratio.

Lock: used to lock the sonar transducer to a certain angle. The angle is adjustable.
To change the scan mode:

Click Mode button from the Operation tab.
3.2.2.2 Selecting the Bandwidth:
DATSS supports the following bandwidth control:

Wide: to get higher intensity image

Medium: to use the optimal bandwidth

Narrow: to get less noisy image
To change the bandwidth:

Click Bandwidth button from the Operation tab.