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.

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

)

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

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

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

DISPLAY PERFORMANCE

4.1

Input Conditions:

Character

Brightness

Contrast

Viewing Direction

Viewing Distance

Ambient Temp.

Supply Voltage

Warm up time

Display size

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

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

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