Radio Shack TRS-80 User manual
Modem
ТВ
OPERATION
MANGAL
Catalog
Number
26-1175
E
7
EX
7
a
TETTE
yao
wek,
омео
-4
/
[|
1
|
|
|
|
ооо
SERVICE
POLICY
Radio
Shack's
nationwide
network
of
service
facilities
provides
quick,
convenient,
and
reliable
repair
services
for
all
of
its
computer
products,
in
most
instances.
Warranty
service
will
be
performed
in
accordance
with
Radio
Shack's
Limited
Warranty.
Non-warranty
service
will
be
provided
at
reasonable
parts
and
labor
costs.
Because
of
the
sensitivity
of
computer
equipment,
and
the
problems
which
can
result
from
improper
servicing,
the
following
limitations
also
apply
to
the
services
offered
by
Radio
Shack:
1:
If
any
of
the
warranty
seals
on
any
Radio
Shack
computer
products
are
broken,
Radio
Shack
reserves
the
right
to
refuse
to
service
the
equipment
or
to
void
any
remaining
warranty
on
the
equipment.
.
If
any
Radio
Shack
computer
equipment
has
been
modified
so
that
it
is
not
within
manufacturer's
specifications,
including,
but
not
limited
to,
the
installation
of
any
non-Radio
Shack
parts,
components,
or
replacement
boards,
then
Radio
Shack
reserves
the
right
to
refuse
to
service
the
equipment,
void
any
remaining
warranty,
remove
and
replace
any
non-Radio
Shack
part
found
in
the
equipment,
and
perform
whatever
modifications
are
necessary
to
return
the
equipment
to
original
factory
manufacturer's
specifications.
.
The
cost
for
the
labor
and
parts
required
to
return
the
Radio
Shack
computer
equipment
to
original
manufacturer's
specifications
will
be
charged
to
the
customer
in
addition
to
the
normal
repair
charge.
TERMS
AND
CONDITIONS
OF
SALE
AND
LICENSE
OF
RADIO
SHACK
COMPUTER
EQUIPMENT
AND
SOFTWARE
PURCHASED
FROM
A
RADIO
SHACK
COMPANY-OWNED
COMPUTER
CENTER.
RETAIL
STORE
OR
FROM
А
RADIO
SHACK
FRANCHISEE
OR
DEALER
AT
ITS
AUTHORIZED
LOCATION
LIMITED
WARRANTY
CUSTOMER
OBLIGATIONS
A
CUSTOMER
assumes
full
responsibility
that
this
Radio
Shack
computer
hardware
purchased
(the
Equipment’),
and
any
copies
of
Radio
Shack
software
included
with
the
Equipment
or
licensed
separately
(the
""Software")
meets
the
specifications.
capacity,
capabilities,
versatility,
and
other
requirements
of
CUSTOMER
CUSTOMER
assumes
full
responsibility
for
the
condition
and
effectiveness
of
the
operating
environment
in
which
the
Equipment
and
Software
are
to
function,
and
for
its
installation
RADIO
SHACK
LIMITED
WARRANTIES
AND
CONDITIONS
OF
SALE
A.
Fora
period
of
ninety
(90)
calendar
days
from
the
date
of
the
Radio
Shack
sales
document
received
upon
purchase
of
the
Equipment,
RADIO
SHACK
warrants
to
the
original
CUSTOMER
that
the
Equipment
and
the
medium
upon
which
the
Software
is
stored
is
free
from
manufacturing
defects.
THIS
WARRANTY
IS
ONLY
APPLICABLE
TO
PURCHASES
OF
RADIO
SHACK
EQUIPMENT
BY
THE
ORIGINAL
CUSTOMER
FROM
RADIO
SHACK
COMPANY-OWNED
COMPUTER
CENTERS.
RETAIL
STORES
AND
FROM
RADIO
SHACK
FRANCHISEES
AND
DEALERS
AT
ITS
AUTHORIZED
LOCATION.
The
warranty
is
void
if
the
Equipment's
case
or
cabinet
has
been
opened,
or
if
the
Equipment
or
Software
has
been
subjected
to
improper
or
abnormal
use.
If
a
manufacturing
defect
is
discovered
during
the
stated
warranty
period,
the
defective
Equipment
must
be
returned
to
a
Radio
Shack
Computer
Center,
a
Radio
Shack
retail
store,
participating
Radio
Shack
franchisee
or
Radio
Shack
dealer
for
repair,
along
with
a
copy
of
the
sales
document
or
lease
agreement.
The
original
CUSTOMER'S
sole
and
exclusive
remedy
in
the
event
of
a
defect
is
limited
to
the
correction
of
the
defect
by
repair,
replacement.
or
refund
of
the
purchase
price,
at
RADIO
SHACK'S
election
and
sole
expense.
RADIO
SHACK
has
no
obligation
to
replace
or
repair
expendable
items
RADIO
SHACK
makes
no
warranty
as
to
the
design,
capability,
capacity,
or
suitability
for
use
of
the
Software.
except
as
provided
in
this
paragraph.
Software
is
licensed
on
an
"AS
IS"
basis,
without
warranty.
The
original
CUSTOMER'S
exclusive
remedy,
in
the
event
of
a
Software
manufacturing
defect,
is
its
repair
or
replacement
within
thirty
(30)
calendar
days
of
the
date
of
the
Radio
Shack
sales
document
received
upon
license
of
the
Software.
The
defective
Software
shall
be
returned
to
a
Radio
Shack
Computer
Center,
a
Radio
Shack
retail
store,
participating
Radio
Shack
franchisee
or
Radio
Shack
dealer
along
with
the
sales
document
C
AMD
"
MC
herein
no
employee,
agent.
franchisee,
dealer
or
other
person
is
authorized
to
give
any
warranties
of
any
nature
on
behalf
of
RADI
K
D.
Except
as
provided
herein,
RADIO
SHACK
MAKES
NO
WARRANTIES,
INCLUDING
WARRANTIES
OF
MERCHANTABILITY
OR
FITNESS
FOR
А
PARTICULAR
PURPOSE.
E
Some
states
do
not
allow
limitations
on
how
long
an
implied
warranty
lasts,
so
the
above
limitation(s)
may
not
apply
to
CUSTOMER.
LIMITATION
OF
LIABILITY
A.
EXCEPT
AS
PROVIDED
HEREIN,
RADIO
SHACK
SHALL
HAVE
NO
LIABILITY
OR
RESPONSIBILITY
TO
CUSTOMER
OR
ANY
OTHER
PERSON
OR
ENTITY
WITH
RESPECT
TO
ANY
LIABILITY,
LOSS
OR
DAMAGE
CAUSED
OR
ALLEGED
TO
BE
CAUSED
DIRECTLY
OR
INDIRECTLY
BY
“EQUIPMENT”
OR
“SOFTWARE”
SOLD,
LEASED,
LICENSED
OR
FURNISHED
BY
RADIO
SHACK,
INCLUDING,
BUT
NOT
LIMITED
TO,
ANY
INTERRUPTION
OF
SERVICE,
LOSS
OF
BUSINESS
OR
ANTICIPATORY
PROFITS
OR
CONSEQUENTIAL
DAMAGES
RESULTING
FROM
THE
USE
OR
OPERATION
OF
THE
EQUIPMENT"
OR
"SOFTWARE
'.
IN
NO
EVENT
SHALL
RADIO
SHACK
BE
LIABLE
FOR
LOSS
OF
PROFITS,
OR
ANY
INDIRECT,
SPECIAL,
OR
CONSEQUENTIAL
DAMAGES
ARISING
OUT
OF
ANY
BREACH
OF
THIS
WARRANTY
OR
IN
ANY
MANNER
ARISING
OUT
OF
OR
CONNECTED
WITH
THE
SALE,
LEASE,
LICENSE,
USE
OR
ANTICIPATED
USE
OF
THE
"EQUIPMENT"
OR
"SOFTWARE".
NOTWITHSTANDING
THE
ABOVE
LIMITATIONS
AND
WARRANTIES.
RADIO
ЗНАСК
5
LIABILITY
HEREUNDER
FOR
DAMAGES
INCURRED
BY
es
OR
OTHERS
SHALL
NOT
EXCEED
THE
AMOUNT
PAID
BY
CUSTOMER
FOR
THE
PARTICULAR
"EQUIPMENT"
OR
"SOFTWARE"
INVOLVED
RADIO
SHACK
shall
not
be
liable
for
any
damages
caused
by
delay
in
delivering
or
furnishing
Equipment
and/or
Software
No
action
arising
out
of
any
claimed
breach
of
this
Warranty
or
transactions
under
this
Warranty
may
be
brought
more
than
two
(2)
years
after
the
cause
of
action
has
accrued
or
more
than
four
(4)
years
after
the
date
of
the
Radio
Shack
sales
document
for
the
Equipment
or
Software,
whichever
first
occurs
Some
states
do
not
allow
the
limitation
or
exclusion
of
incidental
or
consequential
damages,
so
the
above
limitation(s)
or
exclusion(s)
may
not
apply
to
CUSTOMER
RADIO
SHACK
SOFTWARE
LICENSE
RADIO
SHACK
grants
to
CUSTOMER
a
non-exclusive,
paid-up
license
to
use
the
RADIO
SHACK
Software
on
one
computer,
subject
to
the
following
provisions:
A.
|
Except
as
otherwise
provided
in
this
Software
License,
applicable
copyright
laws
shall
apply
to
the
Software
Title
Ји
the
medium
on
which
the
Software
is
recorded
(cassette
and/or
diskette)
or
stored
(ROM)
is
transferred
to
CUSTOMER,
but
not
title
to
the
Software.
CUSTOMER
may
use
Software
on
one
host
computer
and
access
that
Software
through
one
or
more
terminals
if
the
Software
permits
this
function
CUSTOMER
shall
not
use,
make,
manufacture,
or
reproduce
copies
of
Software
except
for
use
on
one
computer
and
as
is
specifically
provided
in
this
Software
License.
Customer
is
expressly
prohibited
from
disassembling
the
Software.
CUSTOMER
is
permitted
to
make
additional
copies
of
the
Software
only
for
backup
or
archival
purposes
or
if
additional
copies
are
required
in
the
operation
of
one
computer
with
the
Software,
but
only
to
the
extent
the
Software
allows
a
backup
copy
to
be
made.
However,
for
TRSDOS
Software,
CUSTOMER
is
permitted
to
make
a
limited
number
of
additional
copies
for
CUSTOMER'S
own
use,
CUSTOMER
may
resell
or
distribute
unmodified
copies
of
the
Software
provided
CUSTOMER
has
purchased
one
copy
of
the
Software
for
each
опе.
OM
or
distributed.
The
provisions
of
this
Software
License
shall
also
be
applicable
to
third
parties
receiving
copies
of
the
Software
from
MER
б.
All
copyright
notices
shall
be
retained
on
all
copies
of
the
Software
APPLICABILITY
OF
WARRANTY
à
A.
Тһе
terms
and
conditions
of
this
Warranty
are
applicable
as
between
RADIO
SHACK
and
CUSTOMER
to
either
a
sale
of
the
Equipment
and/or
pen
License
to
CUSTOMER
or
to
a
transaction
whereby
RADIO
SHACK
sells
or
conveys
such
Equipment
to
a
third
party
for
lease
to
USTOMER.
The
limitations
of
liability
and
Warranty
provisions
herein
shall
inure
to
the
benefit
of
RADIO
SHACK,
the
author,
owner
and/or
licensor
of
the
Software
and
any
manufacturer
of
the
Equipment
sold
by
RADIO
SHACK.
STATE
LAW
RIGHTS
The
warranties
granted
herein
give
the
original
CUSTOMER
specific
legal
rights.
and
the
original
CUSTOMER
may
have
other
rights
which
vary
from
state
to
state.
TRS-80?
Modem
IB
Operation
Manual
Important
Note
Before
connecting
your
Modem
IB
to
the
phone
lines,
you
must
notify
your
local
telephone
company
of
the:
Manufacturer:
Radio
Shack
Model:
Modem
IB,
#26-1175
ISOC
Number:
КИС
FCC
Number:
AA088U-68645-DI-E
Ringer
Equivalence
Number
(REN):
0.0B
This
information
also
appears
on
the
bottom
of
the
modem.
The
Modem
IB
must
not
be
connected
to:
Coin-operated
phones
Party-line
phones
Multiple-line
phones
TRS-80*
Modem
IB
Operation
Manual
©
1983
Тавду
Corporation,
Fort
Worth,
Texas 76102
U.S.A.
АШ
Rights
Reserved.
Reproduction
or
use,
without
express
written
permission
from
Tandy
Corporation,
of
any
portion
of
this
manual
is
prohibited.
While
reasonable
efforts
have been
taken
in
the
preparation
of
this
manual
to
assure
its
accuracy.
Tandy
Corporation
assumes
no
liability
resulting
from
any
errors
or
omissions
in
this
manual,
or
from
the
use
of
the
information
contained
herein.
Table
of
Contents
DIMPTOJUCUON,
os
visos
ва
Кака
сазна
er
ws
1/
Description
of
the
Modem
IB
.............
2/
Setting
Up
the
Modem
IB
................
Connecting
the
Modem
IB
to
a
Power
Source
.....................
Connecting
the
Modem
IB
to
a
TRS-80.....
Connecting
the
Modem
IB
to
a
Telephone
..
Sf
Deng
the
Modem
IB.
coo
rn
Originate
Molle,
vc
vans
serre
ба
Answer
Mode,
.......
rar
Ra
x
ад
4/
Using
the
Modem
IB
with
Videotex
Software
5/
Care
and
Maintenance
...................
6/
Specifications
...........................
.....................»
Пик,
"ser
|
i|
|
||]
| |
||]
n
s
t
t
|
warn]
t |
yeye.
eye
eee.
e.e.
gn
n
пик
Пикник
пик
Introduction
Congratulations
for
selecting
the
TRS-80®
Modem
IB.
This
purchase
will
give
you
the
opportunity
to
enter
the
world
of
computer
telecommunications.
The
Modem
IB
is
designed
to
let
you
originate
and
answer
calls
at
300
baud.
The
Modem
IB
lets
you
use
your
computer,
communications
software,
your
telephone,
and
the
telephone
lines
to
send
or
receive
programs
or
contact
information
services.
The
Modem
IB
is
designed
to
be
used
with
any
TRS-80
computer
or
data
terminal
that
has
RS232-C
interface
capabilities.
|
This
manual
will:
е
Describe
the
Modem
IB.
е
Show
you
how
to
connect
the
modem
to
a
power
source
and
your
TRS-80.
е
Show
you
how
to
use
the
modem.
1/
Description
of
the
Modem
IB
The
Modem
IB
is
a
self-contained,
FSK
(Frequency
Shift
Keying)
telephone
interface.
With
the
Modem
connected,
your
phones
are
available
for
conversational
use
only
when
the
MODE
switch
is
OFF.
So
be
sure
that
the
MODE
switch
is
set
to
OFF
when
you
are
not
using
the
Modem.
The
following
illustrates
the
details
of
the
Modem
IB:
Figure
1.
Modem
IB
(Top
View)
@
Power/Mode
Switch.
Selects
either
ORIGinate
or
ANSwer
mode.
@
Power
On
Indicator.
This
indicator
illuminates
when
the
Modem
is
ON.
®
CARRIER
Signal
Indicator.
This
indicator
lights
up
when
a
carrier
tone
is
detected.
/
(4)
Figure
2.
Modem
IB
(Rear
View)
RS-232C
Connector.
Standard
DB-25
jack
for
connection
to
the
RS-232C
interface
of
most
TRS-80
computers.
Color
Computer
RS-232C
Connector.
Connect
a
4-Pin
DIN
plug
to
this
connector.
Connect
the
other
end
of
the
cable
to
the
RS-232C
interface
of
the
TRS-80
Color
Computer.
Power
Jack.
Connect
the
appropriate
end
of
the
AC
Adapter
Cable
to
this
Jack.
Phone
Jack.
Connect
the
telephone's
modular
plug
to
this
connector.
Modem-to-Telephone
Line
Connector.
Connect
the
modem's
modular
plug
into
the
telephone
wall
jack.
2/
Setting
Up
the
Modem
IB
Be
sure
the
Modem
IB
is
properly
connected
to
the
power
supply
source
and
your
TRS-80
before
you
try
to
use
it.
This
section
will
describe
how
to
make
these
connections.
Connecting
the
Modem
IB
to
a
Power
Source
The
Modem
IB
comes
with
an
AC
Adapter.
Connect
the
appropriate
end
of
the
the
AC
Adapter
to
the
modem.
Connect
the
two-prong
plug
to a
120V
wall-outlet
or
approved
power
strip,
such
as
Radio
Shack's
Automatic
Control
Power
Strip
(26-1429).
Connecting
the
Modem
IB
to
a
TRS-80
When
connecting
the
Modem
IB
to
a
TRS-80
computer
or
data
terminal,
be
sure
to
use
the
correct
cable.
The
cable
you
use
will
depend
on
the
TRS-80
you
have.
Table
1
will
describe
the
appropriate
cables;
Table
2
will
provide
quick
instructions
on
the
TRS-80
connection
locations.
See
your
TRS-80
owner's
manual
for
more
details.
Modem
to
TRS-80
RS-232C
Cables
26-1408
Model
1/11/111/4/12/16/0Т-1
26-3014
Color
Computer
(4-Pin
DIN)
Table
1
TRS-80
RS-232C
Connection
Points
TRS-80
Location
Model
I
Left
Side
of
Expansion
Interface
Model
11/12/16
Rear
Panel
Model
111/4
Underneath
Panel
Color
Computer/MC-10
Rear
Panel
Table
2
To
connect
the
Modem
IB
and
your
TRS-80...
1.
Connect
one
end
of
the
appropriate
cable
to
the
Modem
IB's
RS-232C
Connector.
2.
Connect
the
other
end
of
the
cable
to
the
TRS-80's
RS-232C
Interface
Connector.
Connecting
the
Modem
IB
to
a
Telephone
.
..
The
way
you
connect
the
Modem
IB
to
a
telephone
depends
on
how
your
telephone
is
connected
to
the
wall.
The
following
three
figures
illustrate
these
conditions.
Figure
3.
The
Modem
IB/Telephone
Connection
If
your
telephone
has
this
type
of
connection,
attach
the
Modem
IB
as
shown.
If
you're
using
your
Modem
IB
outside
the
USA,
you
may
need
a
Modular-to-Modular
Cable
(279-374)
and
a
Duplex
Modular
Jack.
Figure
4.
Connection
to
Four-Prong
Jacks
If
your
telephone
has
the
older
style,
four-prong
connection,
use
an
adapter
(279-360)
to
connect
it
to
your
Modem
IB
as
shown.
Figure
5.
Wall
Connector
If
your
telephone
is
wired
directly
to
the
wall,
contact
your
telephone
company.
3/
Using
the
Modem
IB
Once
the
Modem
IB
is
properly
connected
to
a
power
source
and
a
TRS-80,
you'll
find
the
modem
extremely
easy
to
use.
You
can
use
the
Modem
IB
in
two
ways:
е
To
call
a
Host
computer
or
information
service
(i.e.,
you
originate
the
call).
е
To
have
a
Host
computer
call
you
(i.e.,
you
answer
the
call).
Originate
Mode
When
you
want
to
place
a
call
to
a
Host
computer
or
information
service,
you
will
"originate
the
call.
1.
Dial
the
number
on
the
phone
to
contact
the
remote
computer
and
listen
for
a
high-pitched
tone.
Set
the
Power/Mode
Switch
to
ORIG.
When
the
tone
changes,
hang
up
the
phone.
2.
When
the
Carrier
LED
illuminates
(CD),
the
Modem
is
ready
to
handle
data
communications.
3.
To
terminate
the
call,
set
the
Power/Mode
Switch
to
OFF.
This
will
automatically
hang
up
the
phone.
Answer
Mode
When
you
are
contacted
by
a
Host
computer,
use
the
following
steps
to
‘‘answer’’
a
call
and
establish
communications.
1.
Make
sure
the
Host's
baud
rate
is
300.
2.
Answer
the
telephone
(call
from
remote
terminal).
Make
sure
that
the
phone
connection
is
a
clear,
noise-free
one.
3.
Set
the
Power/Mode
Switch
to
ANS.
When
the
tone
changes,
hang
up
the
phone.
4.
When
the
Carrier
LED
illuminates,
proceed
with
data
exchange.
5.
To
terminate
a
call,
set
the
Power/Mode
Switch
to
OFF.
4/
Using
the
Modem
IB
with
Videotex
Software
A
modem
that
is
connected
to
a
TRS-80
running
a
videotex
software
package
constitutes
one
of
the
most
common
(and
exciting!)
ways
to
use
your
Modem.
This
section
will
describe
how
to
use
the
Modem
IB
with
VIDTEX
(the
videotex
program)
on
most
TRS-80
Computers.
Follow
this
procedure:
1.
Connect
the
system
as
described
earlier
in
this
manual.
2.
Load
and
run
your
version
of
VIDTEX.
3.
Dial
an
information
service’s
telephone
number
and
listen
for
a
high-pitched
tone.
Set
the
Power/Mode
Switch
to
ORIG.
When
the
tone
changes,
hang
up
the
phone.
4.
When
the
Carrier
LED
illuminates
(CD),
you
are
ready
for
communication.
5.
Complete
the
log-on
sequence
for
your
information
service
and
follow
the
procedure
described
in
your
videotex
package
and
information
service
user’s
guide.
5/
Care
and
Maintenance
The
most
common
cause
of
problems
is
a
bad
telephone
connection.
Noise
on
the
line
or
a
weak
signal
can
result
in
lost
or
invalid
data.
Try
to
re-dial
the
call
to
insure
that
the
connection
is
free
of
noise
and
interference.
The
only
maintenance
your
Modem
IB
should
require
is
a
periodic
checking
of
cables
and
connections.
If
you
are
experiencing
problems
during
data
transfer,
always
check
the
cable
connections.
If
you
still
experience
problems,
check
with
your
Radio
Shack
Computer
Center.
11
6/
Specifications
Receive
Frequencies
Answer
Mark
1270
Hz;
Space
1070
Hz
Originate
Mark
2225
Hz;
Space
2025
Hz
Transmit
Frequencies
Answer
Mark
2225
Hz;
Space
2025
Hz
Originate
Mark
1270
Hz:
Space
1070
Hz
Transmit
Power
—13
dBm,
+/-14В
Receive
Sensitivity
—40
dBm
Baud
Rate
300
Operating
Temperature
55°F-85°F
(12.8°C-29.4°C)
Electrical
Requirements
15
VAC
at
300
mA
supplied
by
UL
listed
AC
adapter
Dimensions
6.5"
x
75"
x
216.5
X.
19.1
x
5.1
cm)
Weight
3.304
Ibs
(1.49
kg)
Humidity
Operating
environment:
90%
relative
humidity
(no
condensation)
Storage:
90%
(no
condensation)
13
RADIO
SHACK,
A
DIVISION
OF
TANDY
CORPORATION
U.S.A.:
FORT
WORTH,
TEXAS
76102
CANADA:
BARRIE,
ONTARIO
L4M
4W5
TANDY
CORPORATION
AUSTRALIA
BELGIUM
U.
K.
DD
2
—
D
RA,
S5)
91
KURRAJONG
ROAD
PARC
INDUSTRIEL
DE
NANINNE
BILSTON
ROAD
WEDNESBURY
MOUNT
DRUITT,
N.S.W.
2770
5140
NANINNE
WEST
MIDLANDS
WS10
7JN
05/84-SP
Printed
in
U.S.A.
Other manuals for TRS-80
46
This manual suits for next models
1
Other Radio Shack Modem manuals
