Kantronics KPC-2 - Page 13

Connecting the TNC to Your Computer
RS-232/TTL Jumper
Jumpers are appropriately labeled on the PC board. Refer to the parts location
diagram for help in locating them. Also refer to the Assembly and Disassembly section
for information on obtaining access to the interior of the TNC.
KAM Jumper K7
KPC-4 Jumper K10
KPC-2 Jumper K2
KPC-2400 Jumper K2
KPC-1 Jumper K2
This jumper is provided to change the TNC from RS-232 to TTL operating voltage
levels. All TNCs are shipped from the factory in the RS-232 position. If your computer
operates at TTL level voltages, reposition this jumper prior to placing the TNC in
service.
TNC to Computer Connection
The
TNC
is
connected
to
the
serial
data
port
of
your
computer
and
a
terminal
program
must
be
loaded
into
your
computer.
The
serial
port
provides
a
place
for
data
to
be
sent
to
or
received
from
the
TNC.
The
terminal
program
is
the
software
which
runs
in
the
ra
computer,
allowing
it
to
communicate
with
the
TNC.
This
is
also
sometimes
called
a
1
communications
program.
۵
few
computer
systems
include
a
terminal
program
on
the
systems
diskette
or
in
the
initial
software
package,
usually
named
COMM,
TERM,
or
a
similar
name
which
conveys
the
idea
of
communicating.
Some
computer
systems
require
that
a
terminal
program
be
obtained
separately.
Several
simple
terminal
programs
have
been
included
in
the
Sample
Terminal
Programs
section
to
assist
you.
In
general,
any
program
which
allows
telephone
modem
communications
with
the
computer
will
be
suitable
for
use
with
the
TNC.
A
special
program
will
be
needed
for
the
display
of
Wefax
pictures.
There
are
generally
four
variables
to
be
set
in
your
terminal
program.
These
are
baud
rate,
parity,
word
length
(also
called
data
bits)
and
the
number
of
stop
bits.
If
Da
cs
program
provides
for
these
variables,
use
the
following
settings
to
talk
to
the
:
.
Baud
rate:
300, 600,
1200,
1800,
2400,
4800
or
9600
Parity:
None
Data bits: 8
Stop bits: 1
The
25-pin
connector
on
the
back
panel
of
the
TNC
is
for
connecting
to
the
computer.
(The
KPC-4
has
a
9-pin
connector.)
When
facing
the
back
of
the
TNC
the
connector
on
the
right
side
is
labeled
COMPUTER.
See
page
5
for
back
panel
diagrams.
©
Copyright
1989,
Kantronics,
Inc.
All
Rights
Reserved.
5
Duplication
of
this
manual
or
the
firmware
without
Version
2.85
permission
of
Kantronics,
Inc.
is
prohibited.
Installation
Manual
PET ÀÁ————À