Atari SM194 User manual

SMI 94
Technical Manual
Februari 199

TABLE OF CONTENTS
Subi ect Section
Scope 1
General Description '2
Electrical Characteristics 3
Display Performance 4
Controls 5
Options 6
Mechanical Description 7
Environmental Performance 8
Agency Compliance 9
Interface 10
Theory of Operation 11
Appendix:
Figures
Block Diagram
Trouble Shooting Chart
Schematics
\
-^

VCX SERIES MONITORS
)
1.0 SCOPE
This document describes amonitor series that covers arange
of horizontal scan frequencies and includes options to
satisfy requirements in awide variety of applications.
2.0GENERAL DESCRIPTION
The monitor series is supplied with a20-inch diagonal tube
with a114 degree deflection. (15", 17" and 24" CRT's are
available.
)
The monitor can be custom configured for any horizontal scan
frequency from 32 KHz to 128 KHz, and for vertical field
frequencies from 49 Hz to 120 Hz.
The specific values included in this document are for a
typical monitor operating at a66 KHz horizontal scan rate.
Other scan rate information can be obtained by consulting
OEM sales or application engineering.
3.
0
ELECTRICAL CHARACTERISTICS
90 to 137 VAC or 180 to 264 VAC
47-63 Hz
64 Watts
40 Amps peak at 120 VAC
60 Amps peak at 220 VAC
3.1
Power Supply:
Input Voltage
Power Frequency
Power
Inrush Current
C
)
3

3.2.1 Horizontal Sync:
Polarity Negative, edge
(Positive Optional)
Signal Level TTL
Signal rise/fall TTL
Pulse Width. 0.5uSec (min) to 50% of
total horizontal scan
time
Input Impedance typical 100 Ohms
Frequency 32 KHz to 128 KHz
Blanking 3.0uSec (min)
TYPICAL: Vertical Timing
4

3.2.2 Vertical Sync:
Polarity
Signal Level
Signal Rise/Fall
Pulse Width
Input Impedance
Frequency
Blanking
3.2.3 Video Signal Input
Polarity
Signal
Input Impedance
Negative edge (Positive
Optional)
TTL
TTL
40-400 uSec
typical 100 Ohms
49 Hz to 120 'Hz (Inter
lace Optional)
450 uSec(min)
Requirements
Positive is white
(Negative Optional)
1Bit ECL Differential
Typical 75 or 100 Ohms
4.
0
DISPLAY PERFORMANCE
4.1
Input Conditions:
Character
Brightness
Contrast
Viewing Direction
Viewing Distance
Ambient Temp.
Supply Voltage
Warm up time
Display size
4.
2
Video
:
Rise/Fall times
<«§»
At raster cutoff
White level input video
should be set to result in 30
Foot-Lamberts in P4 or equiva-
lent setting.
Along the CRT neck axis
18 inches
25 degrees C
120 VAC
20 minutes max.
14 x11 inches +/- 0.1"
3.5 nsec Max. (10% -90%)
4.3 Horizontal: '
Video blanking 3.0 uSec Horizontal (Min.
)
Horizontal Scan Delay 0-4 uSec Adjustable Phase
Control
4.4 Vertical:
Video blanking
5
450 uSec Vertical (Min.)

A--B =0.07 inches max
4.5.5 Center Bow:
0.07 inches max

4.5.6 Linearity
Using the above pattern, the linearity shall be
better than 7% vertically and better that 9%
horizontally.
Resolution: 1300 Lines min. at 10 Ft-L
P104 phosphor and standard 48%
Transmission glass
4.7 Light Output: 30Ft-L min. with max settings
4.8 Display Stability:
4.8.1 Jitter:
4.8.2
Jitter and Swim resulting from Monitor
Generated Sources: Radiated power line
interference of 0.005 inch max., down to a
frequency of 47 Hz.
Interference from other nonsynchronous
sources shall not produce more than 0.003
inches of jitter on the display.
Turn on Drift:
Aft$r a 10 minute warm-up, the periphery of
the -display shall not drift more than 0.10
inches in any direction. During the 10
minute warm-up, the display shall not "wrap
around" the raster.

4-8.3 High Voltage Regulation:
With an all white active display-, dimensions
shall not change by more than 0.5%, when
going from 2Ft-L to 30Ft-L light output
(ref. P104 phosphor)
.
4.8.4 Black Level Stability:
When changing the data pattern from 5%
Average Picture Level (APL) to 100% APL, the
reference black level will stay constant with
2%.
5.0CONTROLS
5.1 User:
Brightness
Power Switch
Contrast (Available on Grey Scale Units)
5.2Internal
:
Contrast
Brightness
Horizontal Centering (Phase)
Horizontal Size
Horizontal Linearity
Vertical Size
Vertical Linearity
G2 Bias
Static Focus
Vertical Dynamic Focus
Horizontal Dynamic Focus
6.0OPTIONS
6.1Video
:
TTL 1to 3Bits
ECL 1to 3Bits
Analog Composite Video, RS343A
6.2Phosphors
:
P104 standard
All phosphors available as options

6.3 Anti-Reflection Treatment:
Fine Etch or Polished is standard
Bonded quarter wavelength optical coated panel
available as options
6.4 Orientation Format:
Landscape and portrait with horizontal scan in Long or
Short dimension
6.5 Controls:
Remote contrast
LED Power indicator
6.6 Power:
ECL Supply: -10.0VDC nominal §500 ma
)10