DEV 2190 - Glossary

User Manual DEV 2190
100  Copyright DEV Systemtechnik GmbH 2009-2017
11 Glossary
AC
Alternating Current
ARP
Address Resolution Protocol (cache)
ASCII
American Standard Code for Information Interchange (character coding system)
CEST
Central European Summer Time
CET
Central European Time
CPU
Central Processing Unit (the controller of the product, here installed as CPU module)
DA
Distribution Amplifier
DC
Direct Current
DWDM
Dense Wavelength Division Multiplex (optical multiplexing technology)
HH
Horizontal High (18 V, 22 kHz) (see also → HL, → VL, → VH):
Polarization/Band at the input of an IRD controlled switch and LNB power supply mode
HL
Horizontal Low (18 V, 0 Hz) (see also → HH, → VL, → VH):
Polarization/Band at the input of an IRD controlled switch and LNB power supply mode
IP
Internet Protocol
IRD
Integrated Receiver Decoder
LED
Light Emitting Diode
LNB
Low Noise Block Converter
M&C System
Management and Control System
MAC
Media Access Control (address) is the hardware address for the
unique identification of a device within a network.
MIB
Management Information Base
NE
Network Element
NMS
Network Management System
NTP
Network Time Protocol
OID
Object IDentifier
PC
Personal Computer
RF
Radio Frequency
RU
Rack Unit: Units of vertical height. 1 RU = 1 ¾" = 44.45 mm
Sometimes simply referred to as "U" (Unit).
SAT IF
SATellite Intermediate Frequency
SNMP
Simple Network Management Protocol
TCP
Transmission Control Protocol
TCP/IP
TCP/Internet Protocol
TV
TeleVision
UDP
User Datagram Protocol
URL
Uniform Resource Locator
UTC
Universal Time Coordinated
VH
Vertical High (13 V, 22 kHz) (see also → HH, → HL, → VL):
Polarization/Band at the input of an IRD controlled switch and LNB power supply mode
VL
Vertical Low (13 V, 0 Hz) (see also → HH, → HL, → VH):
Polarization/Band at the input of an IRD controlled switch and LNB power supply mode