Nortel Networks 553-3001-211 manual Environmental and power requirements

NT6D80 MSDL card Page 391 of 894

•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 147.

Table 147

Environmental requirements

Condition	Environmental specifications
Operating
Temperature	0° to 50° C (32° to 122° F)
Relative Humidity	5% to 95% non-condensing
Altitude	3,048 meters (10,000 feet) maximum
Storage
Temperature	–50° to 70° C (–58° to 158° F)
Relative Humidity	5% to 95% non-condensing

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).

Circuit Card Description and Installation