R2Sonic 2022, Operation Manual

Page: 47 / 133

Page 47 of 133
Version 3.0 REV r000
Date 25-08-2010
6.4.3 Sector Coverage
The Sonic 2024/2022 allows the user to select the swath sector from 10° to 160°. All 256 beams are
used, no matter what the selected sector coverage that is chosen. The smaller the sector, the
higher the sounding density is within that sector. Changing the Sector Coverage can be done on the
fly, with no need to stop recording data or to go offline.
Figure 40: Sector Coverage
6.4.4 Sector Rotate
The Sonic 2024/2022 has the capability to direct the selected sector to either port or starboard,
allowing the user to map vertical features, or areas of interest, with a high concentration of
soundings resulting from the compressed sector.
First, change the sector coverage to the desired opening angle; this will concentrate the 256 beams
within the sector.
Second, rotate the swath towards the feature to be mapped with high definition. This is done on
the fly, with no need to stop data recording or to go off line.
The Sector Coverage can also be controlled via
the mouse cursor, inside the wedge display.
Position the cursor on either of the straight sides
of the wedge; the cursor will change to a double
arrow and the sector can be reduced or
increased. When using the cursor to change the
sector coverage, the change only takes place
when the mouse button is released.
The sector angle will be numerically visible in the
lower left hand corner of the wedge display
while the mouse button is depressed.