Issue 3 June 2001 4-1
4
Power 4
Overview 4
This section describes the power distribution of the DDM-2000 OC-3 Multiplexer.
Introduction 4
The DDM-2000 OC-3 Multiplexer is powered by −48 volts direct current. The
voltages required to power the circuits within the DDM-2000 OC-3 Multiplexer are
generated by DC-to-DC converters mounted on circuit packs within the shelf.
The information in this section is for typical applications only. Refer to Section 10,
"Technical Specifications," 801-525-168,
DDM-2000 Floor Plan Data Sheets,
and
T-82046-30, Power Systems DC Distribution Circuit for Digital Transmission
System, for proper engineering of battery plant and feeders for OC-3 Systems.
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