Kantronics KPC-2 - Page 33

In Case of Difficulty
Kantronics TNCs are manufactured to very stringent quality standards. If you have
followed the installation procedures outlined in this manual, it is highly unlikely that
you will encounter a failure. If you do have difficulty, use the procedures described in
this section to assist in isolating and correcting the problem.
TNC Does Not "Sign-On" to Computer
1. Carefully recheck cabling between your computer serial port and the TNC.
2. Check carefully to insure that the Transmit Data, Receive Data, and Ground leads
are connected to the proper pins.
3. If you have made a 5 wire connection to the computer serial port, change to a 3 wire
connection.
4. Check your terminal program to be certain it is booted with the correct
communications parameters (serial port, baud rate, parity).
5. Check to insure that the RS-232/TTL jumper is properly positioned for your
computer.
6. Try a "Hard Reset" using the Test/Normal jumper. (Operate your terminal program
at 300 baud when performing a hard reset.)
You Are Unable to Make a "Connect" `
1.
Issue
a
connect
request
and
observe
the
XMIT
LEDs.
If
an
XMIT
LED
illuminates,
check
to
insure
that
the
radio
is
connected
to
the
corresponding
radio
port.
2.
Observe
the
radio
to
determine
if
it
is
being
switched
to
the
"Transmit"
condition.
If
not,
recheck
wiring
between
the
TNC
radio
port,
PTT
pin,
and
ground
on
the
microphone
jack.
3.
Turn
the
VHF
radio
squelch
control
to
"OFF"
and
see
if
the
RCV
LED
illuminates
on
the
packet
controller.
If
it
does
not
light,
recheck
the
audio
connection
between
your
transceiver
and
the
TNC.
4.
If
possible,
monitor
your
transmitted
signal
with
another
radio.
If
the
transmitter
is
keying
to
"Transmit"
but
weak
or
no
audio
is
monitored,
increase
AFSK
output
as
necessary
using
the
AFSK
Output
jumper
or
a
resistor
change.
(See
the
AFSK
Output
Level
section.)
i
©
Copyright
1989,
Kantronics,
Inc.
All
Rights
Reserved.
:
Duplication
of
this
manual
or
the
firmware
without
Version
2.85
permission
of
Kantronics,
Inc.
is
prohibited.
Installation
Manual
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