User's Manual

62 Installation TB8100 Installation and Operation Manual

Dust and Dirt

For uncontrolled environments, the level of airborne particulates must not

exceed 100µg/m

5.5 Grounding and Lightning Protection

Electrical Ground

The TB8100 BSS modules are grounded by physical contact between the

module case and the subrack. To ensure a good ground connection you

must tighten each module retaining clamp securely (refer to

“Final

Reassembly” on page 81

for the correct torque setting).

A threaded grounding connector is provided on the rear of the subrack for

connection to the site ground point (refer to

“Connection” on page 83 for

more details).

Lightning Ground

It is extremely important for the security of the site and its equipment that

you take adequate precautions against lightning strike. While it is outside

the scope of this manual to provide comprehensive information on this

subject, the following guidelines apply:

■ install a suitable lightning rod at the top of the tower and connect it to a

secure ground point with appropriate conductors and connectors

■ position site buildings and equipment within the cone of protection

provided by the grounded tower

■ protect all cables entering the site to prevent lightning energy from

entering site buildings.

5.6 Recommended Tools

It is beyond the scope of this manual to list every tool that an installation

technician should carry. However, the following tools are specifically

required for installing the TB8100 BSS:

■ Pozidriv PZ3 screwdriver for the M6 screws used to secure the subrack

to the rack or cabinet, and also for the DC input terminals on the PMU

■ Pozidriv PZ2 screwdriver for the M4 screws used to secure the module

retaining clamps

■ 0.25in or 6mm flat blade screwdriver for the fasteners used to secure the

front panel to the subrack

■ 8mm AF spanner for the SMA connectors.