Electrical Equipment Guidelines; Laser Safety; Laser/Led Safety For Mpas - Cisco ASR 9000 Series Installation Manual

Electrical Equipment Guidelines

Electrical Equipment Guidelines
Follow these basic guidelines when working with any electrical equipment:
• Before beginning any procedures requiring access to the chassis interior, locate the emergency power-off
• Disconnect all power and external cables before moving a chassis.
• Do not work alone when potentially hazardous conditions exist.
• Never assume that power has been disconnected from a circuit; always check.
• Do not perform any action that creates a potential hazard to people or makes the equipment unsafe;

Laser Safety

Single-mode Ethernet line cards (all of the line cards) are equipped with a Class 1 laser. Multimode Ethernet
line cards (Gigabit Ethernet) are equipped with a Class 1 LED. These devices emit invisible radiation. Do not
stare into operational line card ports. The following laser warnings apply to the line cards:
Warning Class 1 Laser Product. Statement 1008
Warning
Class 1 LED Product (Multimode). Statement 123
Warning
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or
view directly with optical instruments. Statement 1051

Laser/LED Safety for MPAs

The single-mode transmitter in the module uses a small laser to transmit the light signal to the network ring.
Keep the transmit port covered whenever a cable is not connected to it. Although multimode transceivers
typically use LEDs for transmission, it is good practice to keep open ports covered and avoid staring into open
ports or apertures. The single-mode aperture port contains a laser warning label, as shown in the figure below.
Figure 37: Laser Warning Labels for Single-Mode Port
Warning Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or
view directly with optical instruments. Statement 1051
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switch for the room in which you are working.
carefully examine your work area for possible hazards such as moist floors, ungrounded power extension
cables, and missing safety grounds.
Installing and Removing Line Cards and Transceiver Modules