Network Router User's Manual

2-3
Cisco MGX 8260 Hardware Installation Guide
78-10966-02
Chapter 2 Safety and Compliance
Electrical Safety Warnings
Warning The MGX 8260 is equipped with a DC power terminal block, and requires you to terminate the DC
input wiring on a DC source capable of supplying up to 45 amps. Double-pole, 20-amp-per-pole,
circuit breakers are required at the 48 VDC power source.
Warning The MGX 8260 metallic interface connections (T1/E1/DS3) must be connected to the network
through registered or approved CSU/DSUs that provide necessary overvoltage and overcurrent
protection per local and national codes and regulations (Telcordia GR-1089-CORE Type 2
products).
Warning Read the installation instructions before you connect the system to its power source.
Warning When carrying emergency (911) traffic, the MGX 8260 must be powered from redundant
uninterruptible power sources.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage occurs when electronic cards or components are improperly
handled and can result in complete or intermittent system failures.
Use an antistatic strap (clipped to a grounded rack) whenever handling all cards.
To prevent ESD damage, follow these guidelines:
• Always use an ESD wrist strap or ankle strap and ensure that it makes good skin contact.
Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be
between 1 and 10 Mohms.
• When handling circuit cards or cables, make sure the equipment end of your ESD strap is attached
to an unfinished chassis surface of the device in which it is housed. Do not touch the printed circuit
board, and avoid contact between the printed circuit board and your clothing.
• Always place circuit boards component-side up on an antistatic surface or in a static-shielding bag.
If you are returning the item to the factory, immediately place it in a static-shielding bag.
• Ensure that all circuit cards are fully inserted into their respective chassis slots, the respective
extraction levers are in the locked position, and the captive installation screws are hand tightened.
The captive installation screws prevent accidental removal, provide proper grounding for the
system, and help to seat the bus connectors in the receptacles.