2
Laser safety
WARNING!
Do not stare into any fiber port when the device is powered on. The laser light emitted from the fiber port
might hurt your eyes.
•
Before you disconnect a fiber connector, execute the
shutdown
command in interface view to
disable the optical source.
•
After you remove an optical fiber from the connector, install the dust cover on the connector to avoid
connector 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 as described in
•
Lasting high relative humidity can cause poor insulation, electricity creepage, mechanical property
change of materials, and metal corrosion.
•
Lasting low relative humidity can cause washer contraction and ESD and cause problems including
loose screws and circuit failure.
•
High temperature can accelerate the aging of insulation materials and significantly lower the
reliability and lifespan of the device.
Table 1
Temperature/humidity requirements in the equipment room
Temperature Relative
humidity
0°C to 40°C (32°F to 104°F)
5% to 95%, 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.
Table 2
Dust concentration limit in the equipment room
Substance
Concentration limit (particles/m
3
)
Dust particles
≤
3 x 10
4
(No visible dust on desk in three days)
NOTE:
Dust particle diameter
≥
5
μ
m
