Kongsberg Simrad SN90 Reference Manual page 559

Purse seine and trawling sonar

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To detect unserviceable transducer elements and/or transceiver boards, you must

compare the rectangles. When operating the SN90 system in port, the colours will be

less homogeneous due to the environmental noise and the shallow depth. During normal

operation at sea the colours will be homogeneous.

• If a single element is "dead" (no transmit, no receive), the rectangle is easily spotted

because its colour is black.

• If a single element is receiving, but not transmitting, the rectangle is normally

presented in lighter shades of blue.

• If a transceiver board is "dead" (no transmit, no receive), all the transducer elements

connected to the board are easily spotted because they are all black.

This screen capture shows the B-Scan pattern while testing the receiver in the near range.

This is a generic illustration. Any similarities with specific products are accidental.

Select the operating mode of the diagnostic system.

presentation for a closer study of the results.

Element amplitude

when you have received the data and wish to freeze the

to start the test.

Functions and dialog boxes

Chapters

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