HP MSR4000 Router Series Installation Guide

4
ESD prevention
CAUTION:
Check the resistance of the ESD wrist strap for safety. The resistance readin
g
should be in the ran
g
e of 1
to 10 megohm (Mohm) between human body and the ground.
To prevent electrostatic discharge (ESD), follow these guidelines:
• Make sure the router and the floor are well grounded.
• Take dust-proof measures for the equipment room.
• Maintain the humidity and temperature at an acceptable level.
• Always wear an ESD wrist strap and ESD cloth when touching a circuit board or transceiver module.
An MSR4000 router does not supply an ESD wrist wrap. Prepare an ESD wrist wrap yourself.
• Place the removed memory module, CF card, or interface module on an antistatic workbench, with
the face upward, or put it into an antistatic bag.
• Touch only the edges, instead of electronic components when you observe or move a removed
memory module, CF card, or interface module.
To attach an ESD wrist strap:
1. Wear the wrist strap on your wrist.
2. Lock the wrist strap tight around your wrist to keep good contact with the skin.
3. Insert the ESD plug into the ESD socket.
4. Connect the alligator clip to the rack.
EMI
All electromagnetic interference (EMI) sources, from outside or inside of the router and application system,
adversely affect the router in a conduction pattern of capacitance coupling, inductance coupling,
electromagnetic wave radiation, or common impedance (including grounding system) coupling. To
prevent EMI, follow these guidelines:
• Take measures against interference from the power grid.
• Do not use the router together with the grounding equipment or lightning-prevention equipment of
power equipment, and keep the router far away from them.
• Keep the router far away from high-power radio launchers, radars, and equipment with high
frequency or high current.
• Use electromagnetic shielding when necessary.
Lightning protection
To better protect the MSR4000 router from lightning, do as follows:
• Make sure the grounding cable of the chassis is well grounded.
• Make sure the grounding terminal of the AC power receptacle 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.