Lightning Protection; Workbench Requirements - HP A6602 Installation Manual

For the sake of safety, check the resistance of the ESD-preventive wrist strap. The

resistance reading should be in the range of 1 to 10 megohms between human body and
the ground.
The ESD-preventive wrist strap is user-supplied.

Electromagnetic Interference Prevention
All possible interference sources, external or internal, affect the router in the way of
capacitance coupling, inductance coupling, electromagnetic radiation, and common
impedance (including the grounding system) coupling. To minimize the influence of
interference sources on the router, you should take the following into consideration:
Take effective measures to protect the power system from the power grid system.

Separate the protection ground of the router from the grounding device or lightning

protection grounding device of the power supply equipment as far as possible.
Keep the router far away from radio stations, radar, and high-frequency devices

working in high current.
Use electromagnetic shielding when necessary.


Lightning Protection

Although many measures have been taken to protect the A6602 from lightning, if the lightning
intensity exceeds a certain range, damage to the router may still happen. To protect the router
from lightning better, you are recommended to do as follows:
Ensure the PGND cable of the chassis is well grounded.

Ensure the grounding terminal of the AC power socket is well grounded.

Install a lightning arrester at the input end of the power supply to enhance the

lightning protection capability of the power supply.
Install a special lightning arrester at the input end of outdoor signal lines (for

example, E1/T1 line) to which interface modules of the router are connected to
enhance the lightning protection capability.
Refer to Chapter 3 "Installing the Router" for the connection of the PGND cable and the
installation of the power lightning arrester and signal lightning arrester.

Workbench Requirements

When installing the router on a workbench, make sure that:
The workbench is sturdy enough to support the weight of the router and installation

accessories.
The workbench is well grounded.

Cabinet-Mounting Requirements
When installing the router in a cabinet,