Figure 1-21 Laser Warning Labels For Single-Mode Port; Figure 1-22 Class 1 Led Warning Label For Multimode Port; Electrical Equipment Guidelines - Cisco ASR 9000 Series Installation Manual

Preparing to Install Modular Line Cards (MLCs) or Modular Port Adapters (MPAs)

Electrical Equipment Guidelines

Follow these basic guidelines when working with any electrical equipment:
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Laser/LED Safety
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
Figure 1-21
Warning Invisible laser radiation may be emitted from the aperture ports of the single-mode products when no
fiber cable is connected. Avoid exposure and do not stare into open apertures.
Class 1 laser product.
Warning
The multimode aperture contains a Class 1 LED warning label, as shown in
Figure 1-22
CLASS 1 LED PRODUCT
Because invisible laser radiation may be emitted form the aperture of the port when no fiber cable is
Warning
connected, avoid exposure to radiation and do not stare into open apertures.
Cisco ASR 9000 Series Aggregation Services Router Ethernet Line Card Installation Guide
1-52
Before beginning any procedures requiring access to the chassis interior, locate the emergency
power-off switch for the room in which you are working.
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;
carefully examine your work area for possible hazards such as moist floors, ungrounded power
extension cables, and missing safety grounds.
Figure 1-21.
Laser Warning Labels for Single-Mode Port
CLASS 1 LASER PRODUCT
LASERPRODUKT DER KLASSE 1
PRODUIT LASER DE CLASSE 1
1
PRODUCTO LASER CLASE 1
Class 1 LED Warning Label for Multimode Port
PRODUKT MIT KLASSE 1 LED
PRODUIT AVEC VOYANT DEL
DE CLASSE 1
LED
PRODUCTO LED DE LA CLASE 1
Chapter 1 Installing Line Cards in the Cisco ASR 9000 Series Router
Figure 1-22.
OL-17500-08