User's Manual Part 9

References:
Page 118 Element Management System (EMS) 4.0
direct data link connection to this port
allows a remote user to use the NOC–
NEM Interface. See also, NOC-NEM
Interface.
Fault: Physical or functional failure in
a host/remote pair serious enough to
cause an alarm.
Forward Path: Signal path in the
direction from the BTS to the cell
phone.
FPGA: Field Programmable Gate
Array. Bit map defining a gate array.
Provides operating logic for network
elements.
Gain Setting: In a Digivance SDR
system, a number value applied to a
logical RF channel to cause RF signals
in that channel to be either amplified or
attenuated. Gain settings are entered
using the host SDR Config window.
Each unit increment results in a gain or
attenuation of approximately 1 dBm
from the previous setting.
GSM: Global System for Mobile
Communication. One of the RF
modulation types supported by the
Digivance SDR system.
Host Network Card: ADC card
installed on BTS server and connected
to EMS computer. This card provides
the link between EMS and the Host
PCIx Card and between EMS and other
Host Network Cards on other BTS
servers in same CAN.
Host PCIx Card: ADC card that
handles the transfer and multiplexing of
logical RF spectrum data between the
BTS server SDR application and the
Digivance remote unit.
Host/Remote Pair: Basic Digivance
equipment configuration consisting of a
host unit and remote unit.
Host Unit: Digivance network element
that receives an RF signal from the BTS
and converts it to an optical signal to its
paired remote unit. In a Digivance SDR
system, the host unit is the Host PCIx
Card in the BTS server.
Linear Power Amplifier: (LPA) One
of the two modules of the remote unit.
Its job is to provide a large power gain
to forward path signals.
BTS server: Network server using the
Linux operating system. In a Digivance
SDR network, the BTS server runs the
SDR software and contains the ADC
Host Network Card and Host PCIx
Card.
Log File: EMS history file written into
by NOC–NEM every time a POST
STATUS message or alarm message is
generated. Its content can be retrieved
for analysis when needed.
Logical RF Channel: is a bandwidth
multiplex of eight RF voice channels.
Each voice channel uses about 300 KHz
of bandwidth; the logical channel uses
about 30 MHz.
LPA: See Linear Power Amplifier.
Maintenance Interface: (MI) The
EMS graphical user interface.
MI: See Maintenance Interface.
Network Element: Term used in this
manual to refer to either a Digivance
host unit or Digivance remote unit.
NOC: Acronym for Network
Operations Center.