Operation
SeaKing & SeaPrince Imaging Sonars
0374-SOM-00001, Issue: 08
29
© Tritech International Ltd.
updates are the position of a sub/vehicle then this offset may
apply for the separation between a beacon/transponder and the
sonar.
Heading
Use this option to select the source of the heading data. If using
a sonar which contains an internal heading and compass device
or if the compass is connected to the Aux port of the sonar
select Internal/Aux Compass. If the compass device has been
connected through a COM port on the SCU or PC, or if a USBL
system is in use then select Ship/USBL Compass. If the sonar
is mounted to an ROV and both the ROV and support vessel
have a compass it is possible to switch to the ROV compass by
selecting Sub/ROV Compass.
Once position and heading data are present, the Cursor display will be extended to provide
position co-ordinates when the mouse cursor is moved around the sonar plotter.
Note
There must be active sonar data, as well as position and heading data, for the
position co-ordinates to be reported.
Setup
Figure 5.21.
8 Bit
Usually checked. Selects the intensity sampling of sonar data (4-
bit or 8-bit).
No Sens
Must be off (grayed out as shown) for normal use to synchronise
angular head alignment.
Invert
Swaps the display from left to right. Enable if mounted with Sonar
boot down.
Detects
Paint the leading edge of strong targets on the screen (only
applicable to certain models of sonar).
Scrn Lock
Locks the number of range bins sampled to the screen resolution.
Flyback
Sets the sector scan to flyback instead of scan back. Normally off.
Xmit Off
This option is not available under normal operation. It is a
diagnostics level tool that will switch off the Sonar transmitter for
test purposes.
Auto Dynamic Range
This will auto adjust the Display Contrast and Sensitivity whilst the
Sonar is scanning. Auto adjustment occurs at the end of each full
sonar scan.
