User guide

March 2005 Building Your Canopy Network
Through Software Release 6.1
Page 130 of 425 Issue 1
Canopy System User Guide
Moisture
Over time, moisture can cause a cable connector to fail. You can prevent this problem by
◦ using cables that are filled with a dielectric gel or grease.
◦ including a drip loop where the cable approach to the module (typically a CMM2
or CMMmicro) is from above.
◦ wrapping the cable with weather-resistant tape.
On modules with connectorized antenna, use accepted industry practices to wrap the
connector to prevent water ingress. Although the male and female N-type connectors
form a gas-tight seal with each other, the point where the cable enters each connector
can allow water ingress and eventual corrosion. Wrapping and sealing is critical to long-
term reliability of the connection.
Possible sources of material to seal that point include
◦ the antenna manufacturer (material may have been provided in the package with
the antenna).
◦ Universal Electronics (whose web site is http://www.coaxseal.com
), who markets
a weather-tight wrap named Coax-Seal.
Perform the following steps to wrap the cable.
Procedure 4: Wrapping the cable
1. Start the wrap on the cable 0.5 to 2 inches (about 1.5 to 5 cm) from the
connection.
2. Wrap the cable to a point 0.5 to 2 inches (about 1.5 to 5 cm) above the
connection.
3. Squeeze the wrap to compress and remove any trapped air.
4. Wrap premium vinyl electrical tape over the first wrap where desired for abrasion
resistance or appearance.
5. Tie the cable to minimize sway from wind.
end of procedure