0120028-J0 Rev F
50
9� Acronyms and Definitions
AC Alternating current
ANSI American National Standards Institute
AWG American Wire Gauge
BTU British thermal unit
CAN Controller area network
CEC Canadian Electrical Code
CSA Canadian Standards Association
CX Cordex™ series; e.g., CXC for Cordex System Controller
DC Direct current
EMC Electromagnetic compatibility
EMI Electromagnetic interference
ERM Electromagnetic Compatibility and Radio Spectrum Matters
ESD Electrostatic Discharge
FCC Federal Communications Commission (for the USA)
GFI Ground fault interrupt
IP Internet Protocol
LED Light emitting diode
LVD Low voltage disconnect
MIL One thousandth of an inch; used in expressing wire cross sectional area
MOV Metal oxide varistor
MTBF Mean time between failures
NC Normally closed
NEC National Electrical Code (for the USA)
NO Normally open
OSP Outside plant
OVP Over voltage protection
RFT circuit
Remote feeding telecommunication circuit:
A secondary circuit within the equipment, intended to supply or receive DC
power via a telecommunication network at voltages exceeding the limits for
TNV circuits, and on which overvoltages from telecommunication networks
are possible.
RFT-V circuit
An RFT circuit, which is so designed and protected that under normal
operating conditions and single fault conditions, the voltages are limited and
the accessible area of contact is limited.
RU Rack unit (1.75")
SELV Safety Extra Low Voltage
TCP/IP Transmission Control Protocol / Internet Protocol
THD Total harmonic distortion
UL Underwriters Laboratories
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