User's Manual
ADCP-75-110 • Issue 2B • July 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
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
reverse
path
optical
input
from
the
DRU
or
remote
DEU
is
normal
or
lost.
(see
Note)
4
ON/OFF
(Ports
1–6)
I/O
rocker
switch
Enables
or
disables
corresponding
electrical
and
optical
ports.
5
DC
PWR
(Ports
1–6)
RJ-45
jack
(female)
Used
for
connecting
a
DRU
cat
3
or
5
power
cable
to
the
designated
DC
power
jack.
6
FIBER
(Ports
1–6)
Small
form
factor
LC-type
optical
transceiver
Used
for
connecting
each
DRU
or
remote
DEU
forward
path
and
reverse
path
optical
link
to
the
designated
optical
port.
7
HOST
PORT
Small
form
factor
LC-type
optical
transceiver
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
forward
path
optical
input
from
the
DHU
or
supporting
DEU
is
normal
or
lost.
(see
Note)
Note:
A
detailed
description
of
LED
operation
is
provided
in
Section
4.
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)