User Manual
ADCP-75-150 • Preliminary Issue A • March 2003 • Section 2: Description
Page 2-26
©
2003,
ADC
Telecommunications,
Inc.
10.2 Service Interface Connection
The
service
interface
connection
between
the
DEMS
computer
and
the
HU
or
RU
requires
that
the
DEMS
computer
be
equipped
with
a
DB-9
connector
that
is
configured
to
provide
an
RS-
232
DCE
interface.
A
straight-through
RS-232
interface
cable
(accessory
item)
equipped
with
a
male
DB-9
connector
on
one
end
and
a
PC-compatible
connector
on
the
other
end
is
required
to
link
the
DEMS
computer
to
the
HU.
When
multiple
HUs
are
networked
together,
the
DEMS
computer
may
be
connected
to
the
service
connector
on
any
one
of
the
networked
HUs.
10.3 NOC Interface Connection
The
NOC
interface
connection
between
the
DEMS
computer
and
the
NOC
requires
that
the
DEMS
computer
be
equipped
with
a
connector
that
is
configured
to
provide
an
RS-232
ASCII
interface.
The
link
between
the
DEMS
computer
and
the
NOC
would
generally
be
supported
by
a
data
network.
Cables
and
equipment
(not
provided)
to
support
the
RS-232
interface
connection
between
the
DEMS
computer
and
the
data
network
or
dial-up
modem
are
required.
10.4 DEMS Software User Interface
The
DEMS
software
provides
two
user
interfaces:
the
Graphical
User
Interface
(GUI)
and
the
Network
Operation
Center-Network
Element
Manager
(NOC/NEM)
interface.
Both
interfaces
provide
essentially
the
same
functionality
except
only
the
GUI
can
upgrade
the
Digivance
system
with
new
system
software.
In
addition,
only
the
NOC/NEM
interface
can
record
and
playback
alarm
data.
The
GUI
is
presented
at
the
DEMS
computer
or
on
a
laptop
computer.
The
GUI
is
used
for
local
control
and
monitoring
operations.
The
GUI
consists
of
a
series
of
displays
and
screens,
such
as
the
one
shown
in
Figure 2-18,
that
provide
the
user
with
alarm
and
status
information
and
that
allow
the
user
to
set
various
operating
parameters.
Figure 2-18. DEMS Graphical User Interface Host/Remote Display