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Troubleshooting
If you have problems transmitting data
(garbled
data
,
intermittent
errors, etc.)
there
are
a
few checks you can
make
before taking
the
unit to
a
Radio Shack
service
center.
•
Phone
connection
is clean
and
noise-free.
•
No one is talking
on
the
telephone line.
•
Phone and
all extensions
are on the
hook
.
•
Baud rate, parity,
and stop
bits
are
correct for the modem you
are
using and the
modem with which
you are communic.ating.
Maintenance
The only maintenance your DC-2212 requires is a periodic checking of cables
and
connections.
If
you
are
experiencing data transfer problems,
check
the cable
connections
first. Then, run
the
analog
loop
self-test.
If you
still experience
problems, check with
your Radio Shack Computer Center.
Analog Loop Self-Test
The analog loop self-test does not test nor
analyze
the
cond
ition
of
your telephone
circuits. Any keys that you enter from your keyboard after sending the
Q
command are
echoed to your display. This test causes the data
sent
from
your computer
to be looped
back
to
the
receiver,
thus
lett
ing you
know whether the modem is functioning properly.
41
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