1-2
Laser safety
WARNING!
•
Do not stare into any open apertures of operating transceiver modules or optical fiber
connectors. The laser light emitted from these apertures might hurt your eyes.
•
Before you remove the optical fiber connector from a fiber port, execute the
shutdown
command in interface view to shut down the port.
CAUTION:
Insert a dust cap into any open optical fiber connector and a dust plug into any open fiber port or
transceiver module port to protect them from contamination and ESD damage.
Examining the installation site
The device can only be used indoors. To ensure correct operation and a long lifespan for your device,
the installation site must meet the requirements in this section.
Temperature and humidity
Maintain the temperature and humidity in the equipment room at acceptable levels.
•
Lasting high relative humidity can cause poor insulation, electricity leakage, mechanical
property change of materials, and metal corrosion.
•
Lasting low relative humidity can cause washer contraction and ESD and cause problems
including loose mounting screws and circuit failure.
•
High temperature can accelerate the aging of insulation materials and significantly lower the
reliability and lifespan of the device.
To ensure correct operation of the device, the equipment room must meet the temperature and
humidity requirements listed in
.
Table1-1 Temperature/humidity requirements in the equipment room
Temperature Humidity
0°C to 45°C (32°F to 113°F)
5% RH to 95% RH, noncondensing
Cleanliness
Dust buildup on the chassis might result in electrostatic adsorption, which causes poor contact of
metal components and contact points, especially when indoor relative humidity is low. In the worst
case, electrostatic adsorption can cause communication failure.
Table1-2 Dust concentration limit in the equipment room
Substance
Concentration limit (particles/m
3
)
Dust particles
≤
3 x 10
4
(no visible dust on the tabletop over three days)
NOTE:
Dust particle diameter
≥
5 µm
