User Manual

Table Of Contents
Glossary B-3STRATA TX Operators Guide/Tech Ref Manual
dB Decibel
A logarithmic measurement of power or voltage,
applied to audio and RF signals.
dBm A unit of measurement referenced to one milliwatt.
DCC Distribution Command and Control
DCE Data Communications Equipment
A device that communicates with a DTE device. In
practical terms, the DCE is usually a modem and the
DTE device is usually a computer.
De-
emphasis
Reducing the amplitude of high frequency
components of an analog audio signal. Done on the
receive end of an analog link to take out Emphasis
added on the transmit side.
DFT Discrete Fourier Transform
DMUX,
DEMUX
Demultiplexer
DQPSK Differential Quadrature (Quaternary) Phase-Shift
Keying
DRL Data Return Link
DS3 Digital Signal 3
44.736 Mbps data rate.
DTE Data Terminal Equipment
A device that communicates with a DCE device. In
practical terms, the DTE is usually a computer and
the DCE device is usually a modem.
Duplex A channel capable of transmitting information
simultaneously in both directions.
DVB Digital Video Broadcasting
Table B-1: Useful Terms (Continued)
DVB-ASI Digital Video Broadcasting - Asynchronous Serial
Interface
A widely-used MPEG-2 digital transport interface.
Physically the connection is made either with optical
fiber or 75 ohm coax with a BNC connector. Interface
can support data rates up to 270 Mb/sec.
DVB-C Digital Video Broadcasting - Cable
DVB-S Digital Video Broadcasting - Satellite
DVB-T Digital Video Broadcasting - Terrestrial
E1 2.048 Mbps data rate.
E3 34.368 Mbps data rate
EIA Electronic Industries Association
An industry association that establishes various
standards.
EBU European Broadcasting Union
In addition to other activities, EBU produces technical
statements and recommendations for PAL television
systems.
EMC Electromagnetic compatibility.
Emphasis Boosting the amplitude of high frequency
components of an analog audio signal. Done on the
transmit side of an analog link to improve signal-to-
noise ratio.
ENG Electronic News Gathering
ERRS Errors
ESD Electrostatic Discharge
ET Eastern Time (US)
ETSI European Telecommunications Standards Institute
Table B-1: Useful Terms (Continued)