Kongsberg Simrad SN90 Reference Manual page 563

Purse seine and trawling sonar
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• Select
None/freeze
presentation for a closer study of the results.
• Select
Element amplitude
• Select
Element phase
Start Averaging
The test process
collects data from
all the channels, and
calculates the average
value. It may often be
useful to start the data
collection after the end
of the transmit pulse.
Use
Start Averaging
select the first sample
to be part of the data
collection. Which
samples to use, and
how many, depends on
the purpose of the test.
Use
Averaging Range
collection.
Averaging Range
Use
Start Averaging
Use
Averaging Range
collection.
Scale
Choose the scale of the presentation.
• Select
Automatic
automatically.
• Select
Manual
If you choose manual scale you must define the upper and lower limits. Set
and
Minimum
Logarithmic or linear scale can be chosen for the presentation. Logarithmic scale
is normally used since this scale offers the best overview of the complete dynamic
range. A linear scale will enhance the differences closer to the maximum value.
Use the
Colour Scale
Element Size in Pixels
Use
Element Size in Pixels
in the presentation (in pixels).
381294/E
when you have received the data and wish to freeze the
to start the test.
to start the test and observe the element phases.
to
to select the number of samples to be included in the data
to select the first sample to be part of the data collection.
to select the number of samples to be included in the data
if you want the scale of the presentation to set itself up
to manually set up the scale of the presentation.
to the desired values.
Maximum
setting to select the number of colours in the presentation.
to define the width and height of each individual element
Functions and dialog boxes
561

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