3
Table 2 Humidity requirements
Humidity
Range
Operating humidity
10% RH to 95% RH, noncondensing
Storage humidity
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. In the worst case, electrostatic adsorption can cause
communication failure.
Table 3 Dust concentration limits in the equipment room
Substance
Particle diameter
Concentration limit
Dust particles
≥ 0.5 µm
≤ 1.8 × 10
7
particles/m
3
Corrosive gases can accelerate corrosion and aging of components. Make sure the corrosive gases
in the equipment room do not exceed the concentration limits as shown in
Table 4 Corrosive gas concentration limits in the equipment room
Gas
Average concentration (mg/m
3
)
Maximum concentration (mg/m
3
)
SO
2
0.3
1.0
H
2
S
0.1
0.5
Cl
2
0.1
0.3
HCI
0.1
0.5
HF
0.01
0.03
NH
3
1.0
3.0
O
3
0.05
0.1
NO
X
0.5
1.0
EMI
All electromagnetic interference (EMI) sources, from outside or inside of the router and application
system, adversely affect the router in the following ways:
•
A conduction pattern of capacitance coupling.
•
Inductance coupling.
•
Electromagnetic wave radiation.
•
Common impedance (including the grounding system) coupling.
To prevent EMI, use the following guidelines:
•
If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE)
to filter interference from the power grid.
•
Keep the router far away from radio transmitting stations, radar stations, and high-frequency
devices.
•
Use electromagnetic shielding, for example, shielded interface cables, when necessary.
Summary of Contents for CR16000-F
Page 40: ...9 Figure 11 Securing the power cord method one Figure 12 Securing the power cord method two...
Page 47: ...16 Figure 22 Installing an SMB coaxial clock cable...
Page 66: ...5 Figure 5 Removing a common card Figure 6 Removing a card with a locking clip 1 3 2...
Page 76: ...15 Figure 19 Replacing an SMB coaxial clock cable...
Page 89: ...12 Figure 14 Example of a device label...
