Step 18 - Optex Fiber SenSys Terrain Defender TD 100 Installation Manual

Verify that there are no strands of drain wire or shield shorting to the center conductor and
that the connections are secure. Ensure the drain wire is positioned at the top of the sensor
cable.
The SUM lid has an indent centered on the clamp to accommodate the drain wire. Carefully
place the SUM cover onto the lower chassis making sure to align the clamp screws. Begin
alternating between tightening screws until they are both tight and there is no gap between
the lid and base. The enclosure provides RF shielding of the connection between the cable
lead-in to and from processors and sensor cable.
Figure 54. Securing SUM lid Fastened SUM screws

Step 18

Attach the grounding wire to the grounding screw and fasten. When installing two SUMs,
their ground connections may couple into a single ground cable exiting the SUMA.
Figure 55. Securing a single ground connection wire to the SUM (left), securing two SUMs to a single exiting
ground wire (right)
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