Commodore 1902 User manual

COMMODORE ~ ®@~
COLOR MONITOR
users guide

High Resolution
Color Monitor
1902
-
--
©Commodore Electronics, Ltd. 1985. All ri ghts 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 sus-
pect 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 moni-
tor for safety reasons. If you have problems with your monitor
that are not covered in this manual, see your Commodore dealer
ora qualified technician.
1

CONNECTING THE MONITOR TO A COMPUTER
The monitor connection cable connects your monitor to a Com-
modore 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 yourcomputer.
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 three-
plugged 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 color40-column picture display.
4

Brightness
Control
Contrast
Control
Connecting the RGB cable is easy:
5
Volume
Control
Video
Mode
Switch