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DES-7200 Hardware Installation Guide

1-9

The slots for the two management modules are in the middle, and they are identified as M1

and M2 from left to right. The other eight module line cards are numbered as 1-8 from the left

to the right.

When in full configuration, the modules in the module slots of the DES-7206 are as below:

 Two management modules serving as mutual backup

 Four modules selected to meet the specific needs

The slots for the two management modules are in the middle, and they are identified as M1

and M2 from bottom up. The other four module line cards are numbered as 1-4 from bottom

up.

1.5 Ventilation/Heat Dissipation

System of the DES-7206/7210

The oper ating t emperature of t he DES-7206/7210 is 0 -40°C. T he t hermal de sign m ust

ensure t hat t he s urface t emperature of t he c omponents do es n ot exceed the m aximum

allowed temperature of 50-80% at such an ambient temperature, while allowing for reliability,

security, and reparability. In the thermal design of the DES-7206/7210, the fans are used to

induct air for a forced convection in order to ensure the normal running of the equipment in

the specified environment. Figure 1-3 and Figure 1-4 show the ventilation/heat dissipation

solution.

Figure 1-3 Ventilation/Heat Dissipation Solution of the DES-7210

Note

This structure is designed with air inlet at front/back and two sides, and air

outlet at top back and both sides. Six 120*120*38 fans are used to blow

the air to the outside for convection and ultimately heat dissipation.

Therefore, the chassis should be mounted at a place with adequate

spacing around for air circulation.

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