User's Manual Part 9

LOSSARY
User Manual Page 117
Alarm: A physical or functional state
affecting the ability of a host/remote
pair to function normally. Reported by
the host/remote pair to EMS to notify
the user that such a state exists.
A-bis interface: Interface used in
Digivance SDR systems to connect a
BTS server to an upstream device. In
EMS, it is a packet-switching interface
using Voice Over Internet Protocol.
Attenuation: By definition, a function
that lessens the strength of a signal. In
EMS, attenuation can be used to adjust
the strength of the forward path analog
signal transmitted from the remote unit
antenna.An increment of +/- 1 in the
attenuation parameter value results in a
+/- 1 dBm adjustment in the signal
level.
Base Transceiver Station: Signal
processing station at base of a tower or
at some other location with access to an
RF antenna. In a Digivance SDR
system, BTS is a software application
on the BTS server, and signals are
received not from an antenna but from
an upstream device.
BTS: See Base Transceiver Station.
CAN (Control Area Network): A
daisy-chain network of host/remote
pairs controlled by a single EMS
system. This network is formed by
linking network cards each in a
different BTS server.
Cataloging: EMS does this when it
looks for host/remote pairs and builds a
list of them for display to the user upon
request.
Command: ASCII character string
typed in by a user and sent to EMS
using the NOC–NEM Interface. See
also, NOC-NEM Interface.
Composite RF signal: Logical RF
signal sent from Digivance host unit to
remote unit, or vice versa; multiplex of
up to eight logical RF channels of
digitized RF spectrum data.
Dashboard Display: EMS graphical
display containing bar graphs for
system readings and LED-like
indicators (red, green, yellow) that
depict alarm states returned from the
host/remote pair.
EMS: ADC Digivance Element
Management System, the software
application documented in this manual.
EMS/Host/Remote Port: Serial port
(usually COM3) used by the EMS
computer to interface with a host/
remote pair. Information passed
through this port displays in the
Maintenance Interface. See also,
Maintenance Interface.
EMS NOC Port: Serial port used by
the EMS computer to interface with a
remote terminal or with a computer
running a terminal emulator program. A