ST950S Plus+ Installation and Commissioning Manual
Table 4. Abreviations (continued)
Abbreviation
Meaning
OSS
Outstation Support Server (may be stand-alone or part of Stratos)
PCB
Printed Circuit Board
PDU
Pedestrian Demand Unit
PI
Periodic Inspection
PROM
Programmable Read Only Memory
RAG
Red Amber Green
RAM
Random Access Memory
RCD
Residual Current Device
rms
Root Mean Square
RMS
Remote Monitoring System
RTC
Real Time Clock
SA
Speed Assessment
SDE
Speed Discrimination Equipment
SEB
Sealing and Earth Bar
SSH
Secure Shell
TCP
Transmission Control Protocol
TLS
Transport Layer Security
UDP
User Datagram Protocol
UTC
Urban Traffic Control
VA
Vehicle Actuated
1.3. Definitions
The following is a small list of useful definitions.
Table 5. A Table of definitions
Item
Definition
Bit
Binary digit (i.e. `0’ or `1’)
Byte
Eight bit data array (i.e. bits 0-7, and 8-15 are bytes)
EM
Controller identification number (ElectroMatic).
Page 23