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7. Lower the Fish to 10-15% of Range off bottom. This area (water column) will be black on the
screen.
8. SONAR VIEW is now ready to begin displaying and recording sonar data. To record a new file
you can:
1. Click the red button on the Standard Toolbar
2. Select “Record New File” under the “File” pull down menu on the top toolbar
(or Press the “F1” key. )
The “Record New Record” dialog will open. Sonar View automatically suggests a file name based
on the current date. You can use the auto file name or enter your own file name and select a location
to store the file. The sonar data will be displayed on the PC monitor and recorded to the hard drive.
When the file size reaches 200 Mb a message box stating “File size exceeds 200 Mb will be dis-
played. When this occurs It is recommended that a new file be started.
While the sonar data is being recorded the settings can be changed at any time. Select a new
Range setting, color scheme, etc. and note the change in the sonar image. Once the file has been
recorded, play it back to view the results. Experiment with the file by changing the settings and
noting the results on the displayed image.
NOTES:
•
It is recommended that several hours be set aside for making test runs at known targets.
Your skills at running the side scan and interpreting the printout will improve dramatically with
3-4 hours of making passes at known targets such as channel buoys, following the edge of
channels (20-30 m away), and of course scanning known wrecks at different angles (ap-
proaches), and at different Ranges.
•
Recorded data can be copied to a CD or DVD for transport or archiving. Sonar View can
NOT
playback data that is stored on a CD or DVD. To playback data from a CD or DVD, you
must first copy the data from the CD or DVD to the PC’s hard drive, and then use Sonar View
to playback the data from the hard drive.
On Soft Target Searches (Search and Rescue for Bodies):
High frequency (600K) sidescan is the most effective search tool for bodies and other small targets
located on the bottom. Compared to other search and rescue techniques the swath is large, 10 to 20
m wide when on the 5 to 10 m range. Some one-liners on using sidescan for body recovery:
• Must use high frequency (600K).
• Should be in very short range (5-10m on Range ) so target will be large on display.
• Keep fish ~10-15% of Range setting off bottom regardless of water depth. This is accom-
plished by lowering the fish until the printout shows the proper space at the beginning of the
image on the display (see page 42)
• Use slow towspeed for bodies or small targets. 1-2 knots is a good speed.
SAMPLE RECORDING
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Summary of Contents for SSS-100K PC
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