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3.2.4.5
A-Mode
The A-Mode Window uses the boat icon as the ping selector to display a graph of the concurrent
ping information. Red and Green correspond to the left and right sides of the waterfall.
When you switch to single-channel display in the waterfall, the A-Mode Window will also change
to reflect the data in the waterfall.
Time is shown on the horizontal axis and signal intensity on the vertical axis. The units are
arbitrary, but
time = 0 to maximum range
intensity = 0 to maximum sound level
3.2.4.6
Image Adjustment
adjusted separately for each channel. The time-varied gain (TVG) in the system is automatic unless
you deselect that function in the Settings Window.
3.2.4.6.1 Using the Image Adjustment Window
Gain and Histogram adjustment at the Image Adjustment Window
the gain (signal amplification) to each channel (left and right) separately.
The Data Histogram permits the user to specify how the data will appear in the currently selected
color palette. Simply adjust the sliders (Min, Max) under each channel's histogram in the Image
Adjustment Window.
3.2.4.7
Settings
The Settings Window contains many different pages for adjusting the settings of the Sea Scan
Survey software. Access the Settings Menu by selecting <Tools> and then <Settings>.
Alternatively, access it by right clicking on the waterfall and selecting one of the settings options
or <NMEA Data Input>.
© 2013 Marine Sonic Technology, Ltd.
The Image Adjustment Window
The A-Mode Window
Sea Scan Survey
The Image Adjustment Window
allows for adjustment of the
incoming data to clarify the images
seen in the waterfall display. The
window has separate sliders where
the gain (signal amplifier) can be
The Gain sliders on each side of
the Image Adjustment Window go
from 0 (bottom) at the lowest to
100 (top) at the highest. The
sliders let the user manually adjust
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