HP A6616, Installation Manual

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Electrostatic Discharge Prevention
Generation and damage of static electricity
In the communication network to which the router is connected, static induction mainly
results from:

External electrical fields such as outdoor high voltage power line or lightning

Indoor environment, flooring materials, and the router structure
Although many antistatic considerations have been given to the router, damage to board
circuits or even the router may still happen when the static electricity exceeds a certain limit.
Measures against ESD
To prevent electrostatic discharge (ESD),

Make sure that the router and the floor are well grounded.

Take dust-proof measures for the equipment room.

Maintain the humidity and temperature at a proper level, respectively.

Always wear an ESD-preventive wrist strap when touching a circuit board or optical interface
module.

Place the removed memory module, CF card, or HIM/MIM on an antistatic workbench, with the
face upward, or put it into an antistatic bag.

Touch only the edges, instead of electronic components when observing or moving a removed
memory module, CF card, or HIM/MIM.
Connection of the ESD-preventive wrist strap
Follow these steps to connect the ESD-preventive wrist strap:
Step1 Put on the ESD-preventive wrist strap, making sure that the strap makes good skin
contact.
Step2 Plug the ESD-preventive wrist strap connector into the ESD socket on the chassis.
Step3 Make sure that chassis is well grounded.

For the sake of safety, check the resistance of the ESD-preventive wrist strap. The resistance
reading between human body and the ground should be in the range of 1 to 10 Megaohms.

An A6616 configured with an RPE-1X is exemplified here.