H3C Technologies H3C SecPath U200-A U200-M U200-S - Manual (Page 32)

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Installing a lightning protector for a network port
Installation procedure
IMPORTANT:
Read the instructions for the lightning protector carefully before you install it.
To install a lightning protector:
1. Use a double-faced adhesive tape to stick the lightning protector onto the UTM device chassis,
and make sure it is close to the grounding screw of the UTM device as possible.
2. Measure the distance between the protector and the grounding screw of the UTM device, cut the
ground wire of the protector as appropriate, and securely tighten the ground wire to the
grounding screw of the UTM device.
3. Use the multimeter to measure whether the ground wire of the protector contacts well with the
grounding screw of chassis.
4. Insert the outdoor network cable into the protector's IN end, and the cable connected to the UTM
device into the OUT end, and check the indicators on the lightning protector to verify that the
connection is correct.
5. Use nylon ties to bundle the cables neatly.
Figure 26 Installing a lightning protector
(1) Lightning protector for a network port (2) Grounding wire
Installation precautions
The performance of the port lightning protector may be affected in the following cases:
• The port lightning protector is installed in reverse direction. Connect the IN end to the outdoor
network cable and the OUT end to the network port on the UTM device.
• The port lightning protector is not well grounded. After the connection, use the multimeter to
confirm that the ground wire for the protector is as short as possible to ensure its good contact with
the grounding screw of the UTM device.
• The installed port lighting protectors are not sufficient. If the UTM device has more than one
network port connected with other devices through cables outdoor, install a lightning protector for
each network port.