User Manual

Glossary B-3CodeRunner 2 Operator’s Guide/Tech Ref Manual
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
Kbps Kilobits per second.
KHz Kilo (1,000) cycles per second.
LCD Liquid Crystal Display
Lcl Local
LED Light emitting diode.
LO Local Oscillator
LOS Loss of Signal.
LPF Low Pass Filter.
Mbps Megabits per second.
MHz Million (1,000,000) cycles per second.
MUX Multiplexer.
NICAM Near-Instantaneous Companding and Multiplexing
NRZ Near Return to Zero.
ODU Outdoor Unit - also called RF Unit or RFU
OFDM Orthogonal Frequency Division Multiplexing
ØLK Phase Lock.
PER Parity Error Rate.
PLL Phase Lock Loop.
Q Quadature phase.
QAM Quadrature Amplitude Modulation
Table B-1: Useful Terms (Continued)
QPSK Quadrature Phase Shift Keying
The signal (video+audio) is imposed onto the 70 MHz
carrier by varying the phase of the signal while
keeping the amplitude and frequency constant. There
are 4 possible values of phase that can be used to
carry information.
RCL Received Carrier Level.
Rcvr Receiver.
RDS Radio Data System
RF Radio Frequency, any frequency of electromagnetic
radiation or alternating currents in the range from 3
kHz to 300 GHz; as in RF Signal or RF Transmission.
RF Level RF Power from the transmitter.
RFU Radio Frequency Unit - also called ODU
R-S Reed-Solomon
Rx Receiver.
S/W Software.
SC Service Channel.
SC Single Carrier
SDI Synchronous Digital Interface
A serial communications interface operating at
270 Mbit/sec., generally used for in-studio news
operations.
SER Symbol Error Rate
Setpt Set point.
SFN Single-Frequency Network
Simplex A channel capable of transmitting information in only
one direction.
Table B-1: Useful Terms (Continued)