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Sharp PC7000A User Manual

Sharp PC7000A
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(2)
Test
item
description
(2-1)
Modem
loopback
test
(2-1-1)
General
PC-7000A
PC-7l00
The
modem
interface
hardware
is
tested
with
the
test
data
in
the
loopback
mode.
(2-1-2)
Operational
procedure
As
the
control
comes
asking
for
the
entry
of
baud
rate
(Fig.MDM-2)
after
specifying
the
test,
enter
either
[0]
or
[1].
(a)
Test
1)
After
the
baud
rate
has
been
set
in
the
SID LSI
(8250),
the
command
"AT
Z"
is
executed
to
initialize
and
set
the
baud
rate
in
the
modem
LSI
(8051).
2)
After
the
execution
of
"AT
S13=16",
"AT
S16-1",
and
"AT
DO";
it
goes
into
the
loopback
mode
(data
mode).
Now
loop
back
mode
Connect
3)
Test
data,
0
thru
7F,
are
sent
and
received
for
verification.
4)
When
"+++"
is
executed,
the
control
returns
to
the
command
entry
mode,
and,
finally,
the
modem
is
initialized
after
execution
of
"AT
Z".
(b)
Termination
When
the
test
has
been
complete,
the
following
message
is
displayed.
ESC:end,
Enter:start
?
Depression
of
the
[ESC]
key
causes
the
control
to
return
to
the
MDM
test
menu
(Fig.MDM-l).
Depression
of
the
carrier
return
causes
the
control
to
return
to
the
entry
of
the
baud
rate.
-27-

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Sharp PC7000A Specifications

General IconGeneral
BrandSharp
ModelPC7000A
CategoryDesktop
LanguageEnglish

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