User Manual

ADCP-75-110 Issue B March 2001
Page 12
©
2001,
ADC
Telecommunications,
Inc.
Table 3. Digital Expansion Unit User Interface
REF
No.
USER INTERFACE
DESIGNATION
DEVICE FUNCTIONAL DESCRIPTION
1 POWER 3-wire
AC
power
cord
connector
Used
for
connecting
the
AC
power
cord
2 I/O
rocker
switch/
circuit
breaker
Provides
AC
power
On/Off
control
and
AC
power
over
current
protection
3 OK/NOK
(Ports
1–6) Multi-colored
LED
(Red/Green/Yellow)
Indicates
if
the
DRU
or
remote
DEU
connected
to
the
optical
port
is
normal
or
faulty
or
if
the
optical
inputs
from
the
DRU
or
remote
DEU
are
normal
or
lost.
(see
Note)
4 ON/OFF
(Ports
1–6) I/O
rocker
switch Enables
or
disables
corresponding
electrical
and
optical
ports
5DC
PWR
(Ports
1–6) RJ-45
connector
(female)
Used
for
connecting
a
DRU
cat
5
power
cable
to
the
designated
DC
power
jack
6 FIBER
(Ports
1–6) Duplex
LC-type
fiber
optic
adapter
Used
for
connecting
each
DRU
or
remote
DEU
forward
path
and
reverse
path
optical
link
to
the
designated
optical
port
7 HOST
PORT Duplex
LC-type
fiber
optic
adapter
Used
for
connecting
the
DHU
or
supporting
DEU
forward
path
and
reverse
path
optical
link
8 UNIT Multi-colored
LED
(Red/Green/Yellow)
Indicates
if
the
DEU
is
normal
or
faulty.
(see
Note)
9 HOST
PORT Multi-colored
LED
(Red/Green/Yellow)
Indicates
if
the
optical
inputs
from
the
DHU
or
supporting
DEU
are
normal
or
faulty.
(see
Note)
Note:
A
detailed
description
of
LED
operation
is
provided
in
Section
5.
1.5 Terms and Definitions
Refer
to
Table
4
for
a
listing
of
the
terms
used
in
this
manual
and
their
definition.
Table 4. Terms and Definitions
TERM DEFINITION
Alarm
Response The
response
to
an
alarm
input.
Base
Transceiver
Station The
radio
equipment
that
transmits
and
receives
the
voice
and
control
channels
to
and
from
the
cellular
handsets.
Composite
Signal The
sum
of
several
combined
signals.
Digital
Expansion
Unit The
unit
that
extends
a
single
optical
interface
to
multiple
optical
interfaces
or
that
extends
an
optical
run.
Digital
Host
Unit The
unit
that
converts
and
provides
the
digital
source
signal
to
all
DEUs
and
DRUs
and
converts
summed
inputs
from
DEUs
and
DRUs.
(Continued)
Table 4. Terms and Definitions (Continued)