Commodore 1902 User Manual
COMMODORE
~
®@~
COLOR
MONITOR
users
guide
High
Resolution
Color
Monitor
1902
-
--
©Commodore Electronics, Ltd. 1985. All rights reserved .
USER'S GUIDE STATEMENT
This equipment generates and uses radio frequency energy. If
it
is not properly installed and used in strict accordance with the
manufacturer's instructions, this equipment may interfere with
radio and television reception. This machine has been tested and
found to comply with the
limits
for a Class B computing device in
accordance with the specifications in Subpart
J
of
Part
15
of
FCC
Rules, which are designed to provide reasonable protection
against such interference in a residential installation. If you suspect interference, you can test this equipment by turning it
off
and on. If you determine that there is interference with radio or
television reception, try one
or
more
of
the following measures to
correct it:
• reorient the receiving antenna
• move the computer and this monitor away from the receiver
that is picking up interference
• change the relative positions of the computer equipment and
the receiver
• plug the computer and this monitor into a different outlet so
that the computer and the receiver are on different branch
circuits.
If necessary, consult your Commodore dealer or
an
experienced
radio/television technician for additional suggestions.
You
may
also wish to consult the following booklet, which was prepared
by the Federal Communications Commission: How to Identify
and Resolve Radio-TV Interference Problems. This booklet is
available from the
U.S
. Government Printing Office, Washington,
D.C.,
20402,
Stock No.
004-000-00345-4.
WARNING
THERE
IS
DANGEROUS HIGH
VOLTAGE
PRESENT
IN
THIS
MONITOR.
DO
NOT
EXPOSE THIS EQUIPMENT
TO
MOISTURE.
SUCH EXPOSURE COULD CAUSE FIRE
OR
ELECTRIC SHOCK.
If you have technical problems with your Commodore
1902
moni-
tor, unplug the set and call your dealer or service technician.
Copyright
©
1985
by Commodore Electronics, Ud.
All rights reserved.
INTRODUCING
YOU
R MONITOR
Please read
this
brief guide carefully before you try to use your
monitor. This manual shows you how to connect the
monitor
and
use
it
in various operating modes. It also explains the picture
controls and gives instructions for the installation, use and
ser-
vice
of
the
1902.
The Commodore
1902
is a full-color dual monitor, meaning it can
display
computer
output
in either 40- or 80-column screen width .
Some computers, like the Commodore
64
, display screen
output
in a 40-column format. Others, like the Commodore PC, require
an
80-column wide screen. The Commodore
128
can display
on
both screen widths.
You
can select t
he
operating mode you want
with the
flick
of
a switch. The switch setting depends on the com-
puter you have hooked up to the
1902
monitor.
The
1902
can be used in four operating modes: two 40-column
and two aO-column. The
two
40-column modes are composite
and separated. The two aO-column modes are digital
RGB,
posi·
tive and negative sync. The following chart shows recommended
operating modes
by
computer mode . Depending
on
your com-
puter, you'
ll
find that certain operating modes give better dis-
plays while other modes may not even produce a picture.
Recommended Operating Mode
by
Computer Model
COMMODORE 128
COMMODORE 64
PLUS/4
COMMODORE
16
COMMODORE
PC
40·Column
COMPOSITE SEPARATED
X
X X
X X
X X
SO-Column
DIGITAL RGB
X
x
The
1902
monitor
features a 13" screen (measured diagonally)
and operates on the North American Television Standard
(NTSC).
Be
sure to take note
of
the warnings
in
this manual, and do
NOT
remove the back cover
or
otherwise attempt to service this monitor for safety reasons. If you have problems with your monitor
that
are not covered in this manual, see your Commodore dealer
or a qualified technician.
1
CONNECTING THE MONITOR
TO
A COMPUTER
The
monitor
connection cable connects your
monitor
to a Commodore personal computer. Before you connect the cable, turn
off
the power
to
both your personal
computer
and the monitor.
There are
two
different
cables included
with
the
1902
that you can
use to connect the
monitor
to your computer.
1.
One kind
of
cable has three different-colored
jacks
on one end
and a larger rounded end.
2.
The other cable has a silver end that connects the monitor to
the RGB socket on the back
of
the computer.
Shielded cable must
be
used for the connection between this moni-
tor and your computer.
Shielded cables required for both
RGB
and composite connection.
2
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The kind
of
cable you'll use depends on your computer. The threeplugged video cable is used for 40-column display (for composite
and separated modes). The
RGB
plug connects to the computers
that
use the 80-column operating mode. The
C128
, since
it
uses
both
RGB
and composite operating modes , connects both.
To
find
out
which kind
of
cable you should use, see the above table
and look at the audio/video connector(s) on your computer. See
your
computer
's user manual if you don't know where this con-
nector is.
3
To
connect a three-jack cable to the rear panel
of
the monitor,
follow these instructions, which clarify the diagrams:
1.
Plug the rounded end
with
eight PINS inside (the larger end of
the cable) into the VIDEO connector port on your computer.
Make sure the small dent on the metal end
of
the cable that
you plug into the computer is facing up, and push the cable
end
firmly
in.
2.
Plug the three
jack
ends
of
the cable into the three sockets
on
the back
of
the monitor. The jacks and the sockets are color-
coded:
- the
white
output
jack plugs into the AUDIO socket (WHITE)
on the monitor.
• the
yellow
output
jack
plugs into the VIDEO socket
(YELLOW).
• the
red
output
jack plugs into the CHROMA socket
(RED).
3.
Set the VIDEO MODE SWITCH to SEP (for separated luma and
chroma) for a sharp color 40-column picture display.
4
Brightness
Control
Contrast
Control
Connecting the
RGB
cable
is
easy:
5
Volume
Control
Video
Mode
Switch
1.
Plug the silver cable end into the port on the back
of
the com-
puter marked
RGB. If there is no such port, the computer was
not designed for
RGB
operation.
2.
Plug the other end into the socket in the middle of the back of
the monitor.
3. Switch the VIDEO MODE SWITCH to the
RGB
position.
4.
Depending on your computer, you can select a specific
RGB
mode
with
the RGB MODE SWITCH on the back
of
the monitor.
You
can choose
POS
(high sync) or NEG (low sync). Your com-
puter user's manual will identify the correct setting.
\AG8
MODe
1'
./
OIGITAL
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,
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POS.
,
RGS INPUT
V-
HElGlff
After
you follow these simple steps, your
1902
is ready for use as
a video
monitor
for your personal computer.
6
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