Sanyo DM8112CX User manual

SANYO
DM8112CX
SANYO
SOLID
STATE
DATA
DISPLAY
~
OWNER’S
MANUAL

Introduction
Your new DM8112CX solid state data
display is a precision engineered product
designed for use with the computer system
which outputs a composite video signal.
This picture tube employs an implosion
proof, green phosphor.
This data display is equipped with DC
restoration (In the absence of a data signal,
the data display screen will be fully black: no
raster).
Solid state electronics used in the
DM8112CX provides improved reliability
and superior performance even in continu-
ous duty applications.
Installation
CONNECT.....Data Display to an outlet
supplying 240 volts, 50 Hertz, alternating
current (AC) only.
FOLLOW.....Instructions on all tags and
labels before attempting to operate your
display.
WARNING
THIS APPARATUS MUST BE EARTHED.
IMPORTANT
This wires in this mains lead are coloured in
accordance with the following code.
Green and Yellow ........... Earth
Blue... ee eee Neutral
BrOWN se:ms seimims terme eee Live
The wires in this mains lead must be con-
nected to the terminals in the plug as
follows.
Wire Colour... Plug Terminal Marking
Greenand Yellow ... Eor +orGreen
or GRN & YELL
Blue..... eee ee eee N or BLACK
BrOWRA ws eee ew ems ewes es L or RED
This equipment must be protected by a 3A
fuse if a 13A (BS1363) plug is used. If
another type of plug is used a 5A fuse or
lower shall be used, either in the plug or
adaptor orat the distribution board.
Controls
7 Background
VIDEO INPUT
Connector
Brightness Vertical \ Horizontal
Power Indicator Hold Hold
Power Switch”
POWER SWITCH (ON-OFF)
This rocker switch provides power on-off control. Push side with red dot for
power “ON,” opposite side for power “OFF.”
POWER INDICATOR
Red indicator lamp will light up when power switch is turned on.
BRIGHTNESS
This control permits adjustment of display brightness and is used to compensate
for differences in rool lighting.
BACKGROUND
This control permits adjustment of background brightness which should be set
to fully black.
VERTICAL HOLD
Stops any up or down movement of the
displayed data. See the right figure.
HORIZONTAL HOLD
Corrects any slanting of the displayed data. See
the right figure.
VIDEO INPUT Terminal
As shown in the figure, the
signal input cable from the
computer is connected to the
VIDEO INPUT
connector
signal input terminal.
@ Use a coupling capacitor
for the input with an input
signal having a DC voltage of
3V or more.
Video input cable )
Character signal
(Composite video signal)

~~) INPUT SIGNALS
The
figures
below
show
the
recommend
signal
waveforms
and
their
timing
(with
75-ohm
terminal).
HORIZONTAL SYNC PERIOD
Horizontal
sync signal
4.6uS
VERTICAL SYNC PERIOD
Vertical
sync signal
4H (0.253mS)
Data display period
46.0uS
Period up to Data display
video start period
20H (1.27mS) 288H (18.23mS)
HOW TO PROVIDE THE COMPOSITE VIDEO SIGNAL
hen
the
output
signal
from
the
signal
generator
is
video
sync
separated,
convert
it
into
a
composite
sync signal using the circuitry in the figure below.
Horizontal sync signal
Horizontal period 63.3uS (15.80kHz)
Vertical period 316H (20.0mS, 50Hz)
Period up to
vertical sync
4H (0.23mS)
@
@ set the sync signal distortion
(overshoot and under-shoot) to
less than 10%.
@ Set the sync signal to 30% +5%
of the input signal’s amplitude.
AAA
RO1 150
AAA,
,
ROG 150 Q01 2SC536
(positive polarity)
oO | os
1/6 SN7406 §
Vertical sync signal
(positive polarity)
1/6 SN7406
Video signal
(positive polarity) - 5 ~
1/6 SN7406
VV
RO8 68
1/6 SN7406
RO3 330
=f02 330 2 C02 0.
y 1 ROS 470
Wy MM RO7 100
R04 150 |
-O
+B 5V
Coupling
capacitor
C01 100u (sync negative polarity)
Composite video signal
Clu
When
signals
other
than
those
recommended
are
received,
trouble
such
as
that
described
in
the
table
below will arise
TROUBLE
CAUSE CAUSE
Picture is too
wide.
Data display period is
more than 46us.
TROUBLE
Picture extends
too far ver-
tically.
Vertical blanking period
is less than 28H.
Picture is too
narrow.
Data display period is
less than 46us.
Picture tends to
top.
Period up to the vertical
sync signal is more than
4H.
Picture tends to
right.
Value given when front
porch is subtracted from
back porch is more than
3.5uus.
Picture tends to
bottom.
Period up to the vertical
sync signal is less than
4H.
Picture tends to
Value given when front
porch is subtrated from
Horizontal bars
Horizontal sync frequen-
left. back porch is less than appear on cy is no longer 15.80kHz.
picture.
3.5us.
Picture is = = : .
J
cram
Vertical
blanking
period
Picture
flows
fg
Vertical
sync
frequency
ped / ,
vantieally,
is
more
than
28H.
vertically.
|
og
|
is
no
longer
50Hz.

CAUTION
@ For installation, avoid excessively hot or humid places as well as dusty locations. Damage to the cabinet or electronic parts
failures may result.
@
Avoid
any
small
object
or
water
to
fall
in
the
cabinet
through
ventilation
slits
to
prevent
from
component
on
circuit
failures,
or
even dangerous fire hazard.
@
The
cabinet
is
provided
with
many
ventilation
flits
on
its
rear
and
bottom.
Do
not
attempt
to
cover
with
cloth,
pads,
or
any
other
materials
which
may
interfere
proper
ventilation.
@
High
voltage
bearing
components
are
contained
in
the
cabinet.
Do
not
attempt
to
remove
the
rear
cover
for
safety
against
possible
shock
hazard.
Refer
servicing
to
qualified
service
personnel.
SPECIFICATIONS
Input Signals
CRT Size
Phosphor
Semiconductors
Video Amp Bandwidth
Display Area
Display Format
Scanning Frequency
Power Input
Power Consumption
Dimensions
Weight
Composite Video Signal, Negative SYNC.
+0.5
1.0-0.3 Vp-p, 75 ohm
31 cm diag. (12 inch diag.)
P31 (Green)
IC 1
Transistors 14
Diodes 16
18 MHz
Horizontal 21 cm (46 uS) x Vertical 15 cm (18.23 mS)
1920 Characters max. (80 char. x 24 lines)
Horizontal 15.80 kHz, Vertical 50 Hz
AC 240 V, 50 Hz
34 W
32.0 (W) x 27.2 (H) x 32.4 (D) cm
7.6 kg.
*Specifications are subject to change without notice.
111 6 4111 12605 MDM.GBRA
©
qs SANYO
SANYO ELECTRIC CO., LTD.
OSAKA, JAPAN
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