Kongsberg Simrad EK80, Руководство по установке

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• The vessel is berthed or at sea.
In order to do this test, the ship must be "silent".
• The water must be as deep as possible. Recommended minimum depth is 100 metres.
• There must be no other vessels in the vicinity.
• The vessel must lie still in the water.
• As much machinery as possible must be turned off. It is particularly important to
turn off electrical motors, as well as cooling systems and hydraulic pumps that may
cause electric noise.
• To prevent interference, all other hydroacoustic instruments must be turned off.
Note
This test must be considered as indicative. With the vessel in port, the environmental
conditions are not satisfactory. In the shallow waters of the port, noise from other
vessels, dockyard workers or machinery will cause unreliable test results. If you do
this tests in a busy harbour, or with noise sources present, the sensitive receivers will
detect all the noise in the nearby waters.
Neither tools nor instruments are required.
Context
It is essential that the noise signature is as low as possible. Your EK80 must be set to
Passive mode.
Procedure
1 To select Passive mode, use the
Normal Operation
dialog box.
a Open the
Operation
menu.
b Select
Normal Operation
.
c For the relevant transceiver channel, set
Mode
to Passive .
d Set
Pulse Duration
to 1.024 ms.
e Select
OK
to save the selected setting and close the dialog box.
Note
If you set
Mode
to Passive, your EK80 will no longer provide any information in
the echogram(s).
2 Enable the
Noise
tooltip.
a Open the
Display
menu.
b Select
Display Options
to open the dialog box.
Simrad EK80 Installation Manual