Odu Grounding Procedure; Installing A Coupler; Coupler Overview - Alcatel-Lucent 9500 MXC User Manual

Chapter 2. Outdoor Installations

ODU Grounding Procedure

Installing a Coupler

Coupler Overview

Vol. III-2-14
To ground the ODU:
1. Locate the green 2 m ground wire in the ODU installation Kit. One end is
fitted with a crimp lug, the other is free.
2. Fasten the lugged end of ground wire to the ODU grounding stud. Before
tightening, ensure the cable is correctly aligned towards the tower.
3. Locate a position on a tower member for the ground clamp. This must be as
close as practical below the ODU for downward-angled positioning of the
ground wire.
Run the ground wire down from the ODU to its ground point using the shortest
practical path. Do not loop or spiral the ground wire.
4. Scrape any paint or oxidation from the tower at the clamping point to ensure
there will be good low-resistance contact.
5. Cut the ground wire so there will be a just a little slack in the wire when it is
connected to the ground clamp. A ground clamp is supplied as part of all ODU
Cable Installation and Suppressor kits.
6. Strip the insulation back by 25 mm (1 inch), fit into ground clamp, and firmly
secure the clamp to tower.
7. Liberally apply conductive grease/paste around the ground clamp to provide
corrosion resistance. Also apply to the ODU ground stud.
Refer to:
• Coupler Overview on page 2-14
• Coupler Installation Procedure on page 2-15
• Unused and Disconnected Coupler Ports on page 2-18
Couplers (combiners) are available for equal loss or unequal loss.
• For equal loss the attenuation per side is nominally 3.5 dB (3.5 / 3.5 dB), which
applies to both the transmit and receive directions, meaning the additional total
one-way attenuation compared to a non-protected link is 7 dB.
Alcatel-Lucent