Environmental And Power Requirements - Nortel Circuit Card Installation Manual

• A maximum of eight MSDL cards can be installed in a fully occupied
module because of the module's power supply limitations.
• The Clock Controller card should not be installed in a module if more
than 10 MSDL ports are configured as active RS-232 (rather than
RS-422) ports in that module because of the module's power supply
limitations.
• The MSDL address must not overlap other card addresses.
• Before downloading a peripheral software module for an MSDL, disable
all MSDL ports on cards running the same type of operation.

Environmental and power requirements

The MSDL card conforms to the same requirements as other interface cards.
The temperature, humidity, and altitude for system equipment, including the
MSDL, should not exceed the specifications shown in Table 152.
Table 152
Environmental requirements
Condition
Operating
Temperature
Relative Humidity
Altitude
Storage
Temperature
Relative Humidity
A stable ambient operating temperature of approximately 22°C (72°F) is
recommended. The temperature differential in the room should not exceed
±3°C (±5°F).
NT6D80 MSDL card
Environmental specifications
0° to 50° C (32° to 122° F)
5% to 95% non-condensing
3,048 meters (10,000 feet) maximum
–50° to 70° C (–58° to 158° F)
5% to 95% non-condensing
Circuit Card Description and Installation
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