Installation manual
Cable
Information
When
you
draw
the
floor
plan
of
the
data
processing
area,
know
the
location
of
the
external
devices
so
that
you
can
determine
the
maximum
cable
lengths.
For
World
Trade,
the
devices
have
to
be
placed
according
to
the
standard
cable
length
available.
Channel
Cable
Length
Determine
the
cable
length
by
measuring
the
cable
path
from
the
cable
entry/exit
cutout
of
the
device/control
unit
to
the
entry/exit
of
the
rack.
When
you
measure
this
length,
remember:
•
Include
the
distance
from
the
edge
of
the
unit
to
the
center
of
the
cable
entry/exit
hole
in
the
unit.
•
Never
include
any
under
the cover cable
measurements;
IBM
allows
for
these
when
building
external
channel
cables.
•
In
a
raised-floor
environment,
add
twice
the
height
of
the.
raised
floor
to
the
cable
length
between
the
attached
units.
Coaxial
Cable
Length
5-2
Measure
work
station
cables
from
the
connector
on
the
work
station
to
the
connector
on
the
system;
be
sure
to
consider
the
intended
cable
route,
including
diagonal
and
vertical
cable
runs.
Also, remember:
•
The
cable
connectors
on
the
system
depend
on
the
location
of
the
feature
card.
•
The
rack
has
a
cable
clamp
at
the
bottom
of
the
frame
near
the
cable
entry.
Route
cables
through
this
clamp,
then
to
the
connectors.
•
Add
0.6
meter
(2
ft)
to
the
length
of
each
work
station
cable
to
allow
for
slack
in
the
cable.
o
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