• | The SU90 system is turned on and operates normally. |
• | The SU90 system is in Normal mode, but TX Power is set to Off to prevent transmissions. |
• | The transducer is retracted to its upper position. |
• | The vessel is berthed or at sea. |
• | The identification of the transducer element |
• | The identification of the transceiver board |
• | The current sample you are looking at |
• | The measured echo value (in dB) |
1 | Make sure that you have sufficient water depth below the keel before you lower the transducer. |
2 | Lower the transducer to its bottom position. |
3 | Select the default settings.
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4 | Make the following preparations.
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5 | Select Processor to open the page. |
6 | Open the Element BITE (Element Built-In Test Equipment) dialog box.
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7 | Test the receiver performance.
To detect unserviceable transducer elements and/or transceiver boards, you must compare the rectangles. When operating the SU90 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.
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8 | Test the transmitter performance.
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9 | Make sure that there are no weak elements in the transmission sample range. If any weak elements are detected, record these in the result table.
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10 | Make sure there are no black lines in the transmission and reception sample range. A black line indicates an unserviceable transducer element. If any such elements are detected, record these in the result table.
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11 | Finish the test.
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Requirements | Results |
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The information presented by the B-Scan page verifies that the SU90 system is fully operational. | |
All elements are operational in both transmit and receive. The maximum number of bad elements is: 4 | |
Weak elements: | |
Unserviceable elements: | |
Date and signature: |