Context
When you move the cursor over the matrix presentation of the MS70 transceiver channels, each element in the transducer can be clearly identified as a rectangle. If you place the cursor on top of one of these rectangles, a small yellow tool-tip will identify key information.
The following requirements must be met:
|
• |
The information presented by the Matrix page verifies that the MS70 is fully operational. |
NoteThis 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. The test is therefore repeated during the Sea Acceptance Test.
A rectangle with 32 black elements in the matrix view indicates a failure with a single transceiver board. The tool-tip will indicate which board that fails. Restarting the system will normally fix the problem. Failure of eight or nine consecutive transceiver boards indicate a problem with the power supply.
|
• |
Weak signals indicate problems with the +6 VDC supply voltage for the analogue amplifiers. |
|
• |
No response indicate a problem with the +12 VDC supply voltage used for the digital circuitry. |
|
• |
A failure in the +75 VDC supply voltage can only be detected in the transmit test. |
Result
If single elements, or groups of elements, report signal levels with abnormal deviation from it's neighboring elements, this
indicates malfunctioning receiver hardware. If the transmit test for the elements in question works well this indicates a
bad cable connection to the transducer.
Possible reasons may be:
|
• |
Bent or broken pins between the transceiver backplane and the transceiver board or transceiver interface board for the relevant
element. |
|
• |
Bent or broken pins in the cable connector into the transceiver interface board for the relevant element |
|
• |
A defective transducer element. |
Test procedure |
Results |
Testing the receiver channels with the BITE Matrix page |
|
Date and signature:
|