HP 6000 Router manual Even the entire Router

20CHAPTER 2: INSTALLING THE ROUTER

Table 3 Harmful gas limits in an equipment room

Gas	Max. (mg/m3)
Cl2	0.01

. ESD Preventive Despite careful considerations in preventing ESD in the design of the Router, Requirements excessive static electricity may bring enormous damage to the card circuits and

even the entire Router.

On the communication network connected to the Router, the static electricity is primarily introduced from the outside electrical fields, such as the outdoor high-voltage power cable and lightning, and from the inside system, such as indoor environment, floor material and the equipment frame. To avoid the damage caused by the static electricity, you should ensure that:

■The equipment is well connected to ground.

■The equipment room is dust-proof.

■There is adequate temperature and humidity.

■You always wear the ESD-preventive wrist strap and clothes when contacting the circuit board.

■You place the removed circuit board upward on the ESD-preventive workbench, or into a static shielded bag.

■You hold the circuit board by the outer edge, when observing or moving it, to avoid direct contact with the elements on it.

Electromagnetic All interference sources will affect the Router negatively in the conduction patterns Environment of capacitance coupling, inductance coupling, electromagnetic wave radiation, Requirements and common impedance (including grounding system) coupling. To prevent the

interference:

■Take effective measures against electricity net interference with the power supply system.

■Do not use the working ground of the Router together with the grounding or lightning protection grounding device of the power equipment. Separate them as far as possible.

■Keep the Router far away from strong power wireless launchers, radar launchers, and high frequency and high-current equipment.

■Use electromagnetic shielding if necessary.

Lightning Protection Despite the careful considerations that have been taken in lightning protection Requirements when designing the Routersm and the measures that have been adopted, an

excessive-degree of lightning may still damage the Routers. To achieve the best lightning protection, you are recommended to:

■Keep the grounding wire of the PGND of the chassis in good contact with the earth ground.

■Keep the grounding terminal of the AC power socket in good contact with the earth ground.