Kongsberg Simrad ES80, Руководство по установке, Страница: 241 / 312

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Related topics
Test procedures, page 221
Setting to work, page 153
Making a noise/speed curve to determine vessel noise
The performance of the ES80 will always be limited by different noise sources. During the
Installation Manual, accurate noise measurements are done for different vessel speeds. The
weather and sea conditions for the noise measurements will be those at the time of the test.
Prerequisites
The ES80 system is turned on and operates normally. All the relevant transceivers have been
set up, and they are operational with their respective transducers.
You need the following equipment:
• Personal computer
• Spreadsheet program
Context
In order to measure the noise, you must record the noise value using the tooltip in the
echogram. Since the noise will vary with each ping, you must make five measurements for
each vessel speed, and then calculate the average noise. You must measure the noise for
each single channel, but you can do all these measurements simultaneously.
Tip
If you record all the raw data during the noise test, you can repeat the test later using the
replay file. You may then use more than five noise samples for each vessel speed to make a
more accurate curve.
Procedure
1 To select Passive mode, use the
Normal Operation
dialog box.
a Open the
Operation
menu.
b Select
Normal Operation
.
c For each transceiver channel, set
Mode
to Passive .
d Select
OK
to save the selected settings and close the dialog box.
Setting to work