Disabling defective transducer elements
With 800 separate elements in the transducer, the ME70 offers a considerable redundancy in case single transducer elements fail. However, defective elements should be identified and disabled in order to retain the system's accuracy.
Prerequisites
The ME70 system is turned on and operates normally.
Context
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The Built-In Test Equipment (BITE) functionality in the ME70 will identify defective elements in the transducer. If a test shows that individual transducer elements are defective, you must disable them by setting their input amplitudes to a minimum value. It is especially important to disable elements that are creating noise.
Note
This procedure is special in the sense that some “hidden” dialog boxes are used. These dialog boxes are designed for technical support and software debugging, and they are not documented elsewhere in this publication. Follow the procedure exactly as described in the steps. Incorrect settings in these dialog boxes may cause the ME70 to become unstable.
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Procedure
1 Open the SMS BeamFormer parameters in the Parameter Browser dialog box.
a Press the Shift key, and double-click the Simrad logo on the ME70 top bar.
Observe that the Object Inspector dialog box opens.
b Scroll down the list on the left side of the Object Inspector dialog box to locate  ParameterServer.
c Double-click ParameterServer to open the Parameter Browser dialog box.
2 Scroll down the list on the left side of the Parameter Browser dialog box to locate  SMS BeamFormer, and select the [+] sign on the left side to open it.
3 Scroll down the list to locate  NtrCommunicationManager, and select the [+] character on its left side to open it.
4 In the NtrCommunicationManager, scroll down to locate DisconnectedElements.
5 Select DisconnectedElements to see the corresponding parameters on the right hand side of the dialog box.
6 In the New value field, write down the complete list of elements to be deactivated.
Use the element numbers separated with commas. If you are adding new elements to a current list, make sure that you keep both the old and the new elements in the list.
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7 Select  Update.
8 Close each dialog box by selecting [X] in the upper-right corner.