System Operation
3.6.4 Grid
This menu selection allows the operator to control the display of the border and
scale lines around, and within, the sonar wedge. The menu selections are:
Off:
Displays only the sonar image data
Border:
Displays the sonar image data plus a border around
the "wedge"
Lines:
Displays Border plus depth scale lines
Full:
Displays Border and Lines plus annotation of the
depth scale in meters
3.6.5 Freeze
Selecting Freeze stops the update of the sonar image. Used to allow a second,
or prolonged, look at a particular item on the display while the image if "frozen".
Survey data collection is not affected by this setting.
3.7 Filters
Menu
This menu allows the operator to apply range and/or depth filters to the bottom
detect process to aid in noise reduction. Motion sensor inputs are required for the
use of dynamic depth and range gates. See Chapter 6, paragraphs 6.2.1.3,
6.3.1.26, and 6.3.4 for additional information about the motion sensor interface.
The menu selections are:
3.7.1 Range
This function applies the minimum and maximum range values entered (Min-
Range and MaxRange) to the software filter. Only bottom returns within these
range limits will be used in the bottom detection process.
3.7.2 Depth
This function applies the minimum and maximum depth values entered (Min-
Depth and MaxDepth) to the software filter. Only bottom returns within these
depth limits will be used in the bottom detection process.
3.7.3 Both
This function allows the use of both range and depth filters to limit returns used
for the bottom detection process.
detection process.
NOTE
The simultaneous use of both range and depth filters is not recommended
3.7.4 None
No filters are activated.
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SeaBat 8101 Operator's Manual
3-10
Version 3.02