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8. Check to ensure the terminal plug is firmly inserted into the terminal header.
9. Cut three 1-inch strips of coax seal for each EHU as shown in Figure 3.45, and place them at each
end of the wire tray of the EHU, as well as one in the center as shown in Figure 3.46. This trough
acts as a strain relief so that the cable will not be pulled out of the EHU. The remainder can be used
to seal the driven element SO239 connector.
10. Lay the control cable wire inside the wire tray of the EHU then firmly press the cable into the trough
as shown in Figure 3.47. It is a good idea to leave a small amount of slack between the plug and the
point which the tray starts as shown in the circled region of Figure 3.47. Be sure that the cable is
fully seated in the trough, otherwise you may pinch and damage the cable during assembly.
11. Wrap the coax seal around the control cable as shown in Figure 3.48 and squish it flat. This will
help keep water from entering into the EHU. Repeat this process to the remaining areas of the wire
tray as shown in Figure 3.49.
12. When finished, the EHU will be sealed with the gasket and lid, and secured to the EHU brackets on
the boom.
Figure 3.45 Figure 3.47 Figure 3.46
Figure 3.48 Figure 3.49
WIRING THE EHU
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