Motorola ATCA-717 用户手册

In order to meet the environmental requirements, the blade has to be tested in the system
in which it is to be installed.

a

Before you power up the blade, calculate the power needed according to your
combination of blade upgrades and accessories.

The environmental conditions must be tested and proven in the shelf configuration used.
The conditions refer to the surrounding of the blade within the user environment.

aaa

Note:

a

S The environmental requirements of the blade may be further limited down due to

installed accessories, such as hard disks or PMC modules, with more restrictive
environmental requirements

S Operating temperatures refer to the temperature of the air circulating around the

blade and not to the actual component temperature.

S Blade damage

Blade surface
High humidity and condensation on the blade surface causes short circuits.
Do not operate the blade outside the specified environmental limits. Make sure the
blade is completely dry and there is no moisture on any surface before applying
power. Do not operate the blade below 0

°C.

S Blade Overheating and Blade Damage

Operating the blade without forced air cooling may lead to blade overheating and
thus blade damage.
When operating the blade, make sure that forced air cooling is available in the
shelf.

Table 4:

 Environmental Requirements

Requirement

Operating

Non−Operating

Temperature

0

°C to +55°C (may be

further limited by
installed
accessories)

aaaa

–40

°C to +85°C (may be

further limited by
installed accessories)

aa

Temp. Change

a

 +/– 0.5

°C/min

a

 +/– 1

°C/min