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Network
Connection
When
required
limitations
connections
cabling
RS-232
Connections
variety
used
is
and
hardware
outputs
Ground
Transmit Data
Receive
Ring
Data Terminal
Clear
The
line
12
or
that
helps prevent
server
depending
Distance
As with
rate
generally
standard
Thble
Baud
2400
4800
9600
19200
38400
56000
AGS
Hardware
2-10
Installation
Preparation
you
up your system
setting
connectionsWhen
for
your
for signaling
electromagnetic
there
are
variety
considerations
described
is
of
schemes
similar signaling
modular
and
in
fixed-configuration
all
schemes
flow
control
output
Data
input
Indicate
input
Ready output
Send
input
to
with
drivers are supplied
The
-12
Receive
Data
volts
from
lines
open
An
Receive
Data
line will
open
on
and
temperature
Limitations
RS232
all
signaling
systems
baud
the
slower
the
between
baud
relationship
IEEE
RS-232C
2-3
Standard
Rate
Distance
200
100
50
25
12
8.6
and Maintenance
number
must
consider
RS-232
connections
using
interference
may
of modular
connectors
froni
in the
following
sections
name RS-232 The
the
use
products
is
This scheme
provides
12-volt
power
bipolar
ohm
has
10-kilo
input
and
ringing
causing
spurious
be near
but can
-7
volts
component
variation
can
travel
signals
the greater
the
distance
rate
and
distance
rate
Distance
Speed
Versus
Feet
Distance
60
30
15
7.6
3.7
2.6
of
the cabling
factors
related
to
be aware of
the
distance
be
For
factor
telco
also
which
Each
choose
to
scheme which
following
most
sufficient
control
to
two
six
per
line
signals
an open
signal will
output
the -12-volt
resistor
to
communication
to the
input
from
-10
-6
to
vary
limited
distance
any given
at
2-3 shows
Table
the
Meters
of
these
modems
them
of
be
near
supply
volts
bit
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