ST950S Plus+ Installation and Commissioning Manual
Table 4. Abreviations (continued)
Abbreviation
Meaning
CIC
Controller Interface Card
CLU
Cableless Linking Unit
CPU
Central Processing Unit
CRC
Cyclic Redundancy Code
CRL
Certificate Revocation List
CTB
Controller Terminal Backplane
DC
Direct Current
DFM
Detector Fault Monitor
DHCP
Dynamic Host Configuration Protocol
DNS
Domain Name System
ELV
Extra Low Voltage
GSPI
Generic Serial Peripheral Interface
HI
High Intensity
HFF
Hardware Fail Flash (ST950 LV/ELV Only)
HTTP
Hypertext Transfer Protocol
HTTPS
HTTP Secure
IC4
Intersection Configurator v.4 (UK controller configuration application)
IDB
Intelligent Detector Backplane
I/O
Input/Output
ITS
Intelligent Traffic Systems
KOP
Kit of Parts
LED
Light Emitting Diode
LMU
Lamp Monitoring Unit
LPU
Logic Power Unit
LSLS
Lamp Switch Low-Voltage Serial
NTP
Network Time Protocol
OCSP
Online Certificate Status Protocol
OTU
Outstation Transmission Unit
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