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SIG-QG-17-05 DECEMBER 2017
Version No.: A
GLOSSARY
TERM
DESCRIPTION
AAR:
Association of American Railroads – An organization that establishes
uniformity and standardization among different railroad systems.
AREMA:
American Railway Engineering and Maintenance-of-way Association
DIAG.:
Diagnostic
DNS:
Domain Name Server
GCP:
Grade Crossing Predictor – A train detection device used as part of a
highway-railroad grade crossing warning system to provide a relatively
uniform warning time.
GPS:
Global Positioning System.
IP:
Internet Protocol - ISO Model Layer 3 (network) protocol that performs
proper routing of packets.
LAN:
Local Area Network – A limited network where the data transfer medium
is generally wires or cable.
LED:
Light-Emitting-Diode - A solid-state indicator.
Module:
Physical package including PCBs and input/output terminals for
connecting to external devices and equipment.
RJ-45:
Industry standard Ethernet port
RS232:
Industry standard serial port.
RX:
Receive
RXD:
Receive Data
TX:
Transmit
TXD:
Transmit Data
USB Port:
Universal Serial Bus Port
USB Drive:
Types of memory devices that plug into a USB port. These devices are
commonly called flash drives or memory sticks.
