User Manual
ADCP-75-150 • Preliminary Issue A • March 2003 • Section 1: Overview
Page 1-9
©
2003,
ADC
Telecommunications,
Inc.
3.2 Control and Monitoring Software
The
DEMS
software
supports
control
and
monitoring
functions
for
both
the
local
and
remote
service
interfaces.
The
DEMS
software
is
stored
on
a
CD-ROM
and
shipped
separately.
Software
installation
consists
of
copying
the
software
files
from
the
CD-ROM
to
a
designated
directory
on
the
hard-drive
of
the
DEMS
computer.
The
DEMS
software
is
used
to
provision
and
configure
the
Digivance
system
for
operation.
This
includes
selecting
a
sitename,
setting
alarm
thresholds,
and
setting
forward
and
reverse
path
RF
gain
adjustments.
The
DEMS
software
is
also
used
to
get
alarm
messages
(individual
or
summary),
data
measurements,
or
to
upgrade
the
HU/RU
system
software.
All
control
and
monitor
functions
(except
software
upgrade
which
can
only
be
done
using
the
DEMS
software
GUI)
can
be
effected
using
either
the
NOC/NEM
interface
or
the
DEMS
software
GUI.
3.3 Fault Detection and Alarm Reporting
LED
indicators
are
provided
on
the
front
panel
of
the
HU
and
on
the
front
panels
of
the
RU
modules
to
indicate
if
the
system
is
normal
or
if
a
fault
is
detected.
In
addition,
normally
open
and
normally
closed
alarm
contacts
(for
both
major
and
minor
alarms)
are
provided
at
the
HU
for
connection
to
a
customer-provided
external
alarm
system.
All
alarms
can
also
be
accessed
through
the
NOC/NEM
interface
or
the
DEMS
software
GUI.
3.4 Powering
The
HU
is
powered
by
±24
or
±48
Vdc
and
must
be
hard-wired
to
a
local
office
battery
power
source
through
a
fuse
panel.
A
screw-down
terminal
strip
is
provided
on
the
rear
side
of
the
HU
for
the
power
connections.
The
RU
is
powered
by
120
or
240
Vac
(50
or
60
Hz)
and
must
be
hard-wired
to
an
AC
power
source
through
a
20
Amp
breaker
box.
A
three-wire
stub
cable
is
provided
for
the
AC
power
connections.
A
120
Vac
outlet
should
be
installed
near
the
RU
for
powering
test
equipment
or
power
tools.
In
certain
applications,
it
may
be
necessary
to
install
a
surge
protector
(not
provided)
in
the
AC
power
feed
to
prevent
equipment
damage
from
AC
power
spikes.
3.5 Equipment Mounting and Configuration
The
HU
is
designed
for
mounting
in
a
non-condensing
indoor
environment
such
as
inside
a
wiring
closet
or
within
an
environmentally-controlled
cabinet.
The
HU
is
intended
for
rack-
mount
applications
and
may
mounted
in
either
a
19-
or
23-inch
WECO
or
EIA
equipment
rack,
usually
within
20
feet
of
the
BTS.
The
outdoor
RU
is
designed
for
mounting
in
an
outdoor
environment.
The
outdoor
RU
consists
of
a
Spectrum
Transport
Module
(STM),
a
Linear
Power
Amplifier
(LPA)
module,
and
a
self-
contained
cabinet
which
houses
the
modular
components
and
protects
them
from
the
elements.
The
RU
cabinet
is
weather-tight
but
contact
with
salt-air
mist
should
be
avoided
as
it
may
degrade
the
MTBF
of
the
product.
The
outdoor
cabinet
can
be
mounted
from
a
flat-vertical
surface,
from
a
utility
pole
(requires
pole-mount
kit),
or
mounted
on
a
pedestal.
Slots
are