User Manual

Glossary B-4STRATA TX Operator’s Guide/Tech Ref Manual
ID Identification
IDU Indoor Unit
IF Intermediate Frequency
IMD Inter-Modulation Distortion
IRD Integrated Receiver Decoder
IRE 1. Institute of Radio Engineers, an international
professional radio engineering association that
establishes various standards.
2. A unit of measurement, established by the IRE, in
which 1 IRE Unit =.00714 volts peak-to-peak (Vp-p)
and 140 IRE units equals 1 Vp-p.
ISI Inter-Symbol Interference
ISO International Standards Organization
kbps Kilobits per second
kHz Kilo (1,000) cycles per second
LAN Local Area Network
LCD Liquid Crystal Display
Lcl Local
LED Light Emitting Diode
LNA Low Noise Amplifier
LNB Low Noise Block Down Converter
LNC Low Noise Converter
LO Local Oscillator
LOS Loss of Signal
LPF Low Pass Filter
LQ Link Quality
Mbps Megabits per second
MHz Million (1,000,000) cycles per second
Table B-1: Useful Terms (Continued)
MPEG Moving Picture Experts Group
MRC Microwave Radio Communications
Multipath An unpredictable set of reflections and/or direct
waves, each with its own degree of attenuation and
delay. Due to obstacles and reflectors in the wireless
channel, transmitted signals arrive at the received
from various directions over multiple paths.
MUX Multiplexer
N/C No Connection
NICAM Near-Instantaneous Companding and Multiplexing
NRZ Non-Return-to-Zero (Modulation)
NTSC National Television System Committee
Color television standard used in the US. Provides
525 horizontal lines of resolution. Not compatible with
PAL or SECAM.
Null modem
cable
An RS-232 cable designed to connect two computers
(or other data sources) together. It has male DB9
connectors on each end, to mate with the DB9
female connectors on the PCs. It also has the
Transmit and Receive connections crossed over so
Transmit (pin 3) on one end connects to Receive (pin
2) on the other.
Also called “Crossover Cable”.
ODU Outdoor Unit
OFDM Orthogonal Frequency Division Multiplexing
OOK On-Off Keying
Table B-1: Useful Terms (Continued)