Northern Telecom Meridian Meridian 1 Installation Manual page 63

58 Glossary
PDU
pedestal
SDI port
top cap
UEM
553-3201-200 Standard 1.0 April 1993
Power Distribution Unit. Part of a pedestal. A PDU provides power
for the entire column. A PDU contains the field wiring terminal block
and the main circuit breaker (or breakers).
The equipment that forms the base of column. A pedestal contains a
blower unit, an air filter, and a PDU.
Serial Data Interface port. Used for the optional sharing features that
allow the Application Module console to access Meridian 1
administration and maintenance programs
The equipment that mounts on top of a column. A top cap provides
air flow exits, I/O cable entries and exits, and thermal sensing
devices.
Universal Equipment Module. The basic unit of Meridian 1 modular
packaging. A UEM is a self-contained hardware cabinet housing a
card cage, with a power supply, backplane, and circuit cards. If the
UEM has the card cage for an AEM installed, it functions as an
AEM.