Cisco 7000 Series Hardware Installation And Maintenance page 56

Pant
Wiring
Following
location
interference
Considerations
Interference
When
between
plant
Bad
Strong
destroy
conducting
Safety
Note
radio frequency
in
If
you
the
plant
use
applicable
wires
If
consideration
caused
unshielded
may
you
Most
without
identify
environment
The ground
connecting
Distance
Limitations
The
length of your
signal
example
distance
distances
than these
used
at
can compensate
shown
guidelines
for
are guidelines
setting
new system consider
the
of
and connector
compatibility
wires run for any
are significant
and
the the
field on
signals
wiring
wiring can result
practice
interference
electromagnetic
the signal drivers and receivers
through
power
surges
with
Electricity in this
To and remedy
predict strong electromagnetic
RFI
inteiference
use twisted-pair cable
in your plant
emit radio interference
to
wiring is unlikely
high-quality twisted-pair cable
recommended
exceed
distances
of
to the effect lightning
or other high-energy
by lightning
conductors
to electronic
destroy
want
consult
to in electrical
experts
data centers cannot resolve
the
and
other
pulse meters
special
and
so take
resolve
precautions
attention
withspecial
the side of the IP
on
screw left
wire or
ground antistatic
networks and the distances
speed and
transmission
the
standard coaxial cable has
and
these
rate limits in
descriptions
however
for
you
signaling
reÆommended
For the
example
without
Mbps
any problems
them should
for
you
here do
However
so at
your
network
for
planning your
and
the
up plant wiring cabling
the distance
limitations for
described the following
as in
distance
in an
electromagnetic
wires
This has
the fact two
radio interference
in
emanating
caused by
as
especially
and
in the can
router
lines and
equipment
into
chapter
interference
with good
wiring distribution
When
exceeding
one ground
with conductor
between
or wires
if
pass
strike in
your vicinity
phenomena can
easily
you have had
devices
If
surge suppression
but potentially catastrophic
infiequent
These
equipment problems
by providing properly
issues of
electrical
to
surge
end
of chassis provides
the
device chassis
to ground
between
connections
media the
type of cabling used
greater channel
capacity
IEEE
recommended
the
are
can results
good
usually get
maximum
for V.35
rate
understand
If the electrical
you
with
results rates
good
get
The
own
risk distance
following
connections before
installation
When
site
at
your
planning
signaling
electromagnetic
sections
field interference can
for the construction
implications
from
wiring
the
plant
lightning or radio
transmitters can
even
create an hazard
electrical
Review
the warnings
safety
need
consult
may to
you
of grounding
conductors
recommended
the
distances
when
for each data
signal
buildings give
special
EMP
The
electromagnetic pulse
into
enough
couple energy
of
this sort in the
problems
and
shielding
described
problems
just
great deal of time
can cost
and
shielded
grounded
suppression
connection
for
point
See 1-5
Figure
on
type of signal
depend the
signals For
transmit
to the
The
than
twisted-pair cabling
maximum
speeds
and
distances
at far
speeds
Mbps but commonly
is it is
might
that arise
problems
and
distances greater than
limits are provided
as
for Installation
Preparing
Site
Requirements
the
occur
of
by
in
experts
past
to
the
and
greater
and
those
2-5