User Manual
ADCP-75-136 • Issue 1 • November 2002
Page 27
©
2002,
ADC
Telecommunications,
Inc.
The
following
materials
are
required
in
order
to
complete
the
procedures
in
this
section:
• Wall-mount
fasteners
(wall-mount
applications
only)
• #22
AWG
(0.40
mm)
category
3
or
5
cable
(for
power
cable
and
external
alarm
connections)
• RJ-45
male
connectors
(for
power
cable)
• #18
AWG
(1.00
mm)
insulated
stranded
copper
wire
(for
chassis
grounding
wire)
• Ring
terminal
for
#18
wire
(for
chassis
ground
wire
connection)
• 50
or
62.5
micron
core
multi-mode
or
9
micron
core
single-mode
fiber
optic
cable
• LC-type
field
installable
connectors
• High
performance,
flexible,
low
loss
50-ohm
coaxial
cable
• N-type
male
connectors
• Wire
ties
4.3 Unpacking and Inspection
This
subsection
provides
instructions
for
opening
the
shipping
boxes,
verifying
that
all
parts
have
been
received,
and
verifying
that
no
shipping
damage
has
occurred.
Use
the
following
procedure
to
unpack
and
inspect
the
DHU:
1.
Open
the
shipping
carton
and
carefully
unpack
the
DHU
from
the
protective
packing
material.
2.
Check
the
DHU
for
broken
or
missing
parts.
If
there
are
any
damages,
contact
ADC
(see
Section
6
at
the
end
of
this
manual)
for
an
RMA
(Return
Material
Authorization)
and
to
reorder
if
replacement
is
required.
4.4 Mounting Procedure
The
DHU
may
be
either
rack-mounted
or
wall-mounted.
Of
the
procedures
that
follow,
use
whichever
procedure
is
appropriate
for
the
installation:
Note:
To
insure
that
all
optical
connectors
and
transceivers
remain
dust-free
during
installation,
leave
all
dust
caps
and
dust
protectors
in
place
until
directed
to
remove
them
for
connection.
4.4.1 Rack Mount Installation
The
DHU
may
be
mounted
in
either
a
19-inch
or
23-inch
EIA
or
WECO
equipment
rack.
Both
US
standard
and
metric
machine
screws
are
included
for
rack
mounting
the
DHU.
When
loading
the
DHU
in
a
rack,
make
sure
the
mechanical
loading
of
the
rack
is
even
to
avoid
a
hazardous
condition
such
as
a
severely
unbalanced
rack.
The
rack
should
safely
support
the
combined
weight
of
all
the
equipment
it
holds
and
be
securely
anchored.
In
addition,
the
maximum
recommended
ambient
temperature
for
the
DHU
is
50º
C
(122º
F).
Allow
sufficient
air
circulation
or
space
between
units
when
the
DHU
is
installed
in
a
multi-unit
rack
assembly
because
the
operating
ambient
temperature
of
the
rack
environment
might
be
greater
than
room
ambient.