363-206-305
Technical Specifications
Issue 3 June 2000
10-55
Environmental Specifications
10
Temperature and Humidity
10
A DDM-2000 FiberReach Multiplexer shelf meets Telcordia Technologies Network
Equipment Building System (NEBS) requirements
*
for use in central office
environments without fans.
A heat baffle assembly is required for all applications in a bay frame and for
cabinet configurations where thermal environments are specified. The baffle
should be installed above and below any DDM-2000 FiberReach shelves. Refer to
363-206-300,
DDM-2000 FiberReach Multiplexer Applications, Planning, and
Ordering Guide
, for detailed information on heat baffles in typical bay
arrangements.
The DDM-2000 FiberReach Multiplexer operates in uncontrolled environments at
temperatures of
−
40
°
C to +75
°
C and humidity of 5 to 95 percent (noncondensing).
Forced convection cooling (fans) is required when the air inlet temperature is
above 50
°
C. The DDM-2000 FiberReach Multiplexer provides optional control and
alarming of the 2-type fan units used in Lucent cabinets and alarming of the DDM-
2000 fan shelf.
EMC Requirements
10
The DDM-2000 FiberReach Multiplexer has been tested and found to comply with
the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These
limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio-frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful interference
to radio communications. Operation of this equipment in a residence is likely to
cause harmful interference in which case the user will be required to correct the
interference at the user's own expense.
Earthquake Requirements
10
The DDM-2000 FiberReach Multiplexer meets the earthquake requirements
defined in Telcordia Technologies TR-NWT-000063, Issue 5 and Pacific Bell
Standard PBS-000-102PT. Installations in Zone 4 regions require the
ED-8C800-50 or ED-8C801-50 bay frame. Drawing ED-8C800-70 provides
ordering and engineering application information for these frames.
Fire Resistance
10
The DDM-2000 FiberReach Multiplexer meets the ignitability requirements
specified in T1Y1.4/88-014. In addition, the DDM-2000 FiberReach Multiplexer
meets the fire resistance requirements of
UL
†
1459, 2nd Edition.
*"
NEBS Generic Equipment Requirements
," GR-63-CORE, Issue 1, October 1995.
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