Abekas A60 Manuale utente

VideoSystems, Inc.

A Carhon

mpany

January

1988

digital

disk

recorder

A60

Technical

Manual

AbekasA60

DIGITAL

DISK

RECORDER

Technical Manual

Abekas Video Systems, Inc.

101

Galveston Drive

Redwood City

California 94063

(415) 369-5111

A60

Technical Manual

TABLE

OF CONTENTS

Table

Contents

SECTION

INTRODUCTION

.............................................

1-1

Description

..............................

.........................

1-1

Physical Description

...............................................

1-2

Related Publications

...............................................

1-2

SECTION 2: INSTALLATION

INSTALLATION

..............................................

2-1

74-M051-A2.

JAN91

Physical Mounting

.................................................

2-1

System

Interconnects

..............................................

2-1

Signal System

Disk

Drive

Connections

........................

2-1

Control Panel

Signal System

Connection

.....................

2-3

Control Panel

Monitor

Connection

....................

2-3

Video

Connections

.........................................

2-4

Detailed Pin-Out Information

........................................

2-5

Keyboard

Interconnections

..................................

2-5

The

SMPTE

and

AUX

RS422

Connections

........................

2-6

The

RS232

Connections

.........................

••••

••

I • 2-7

Editor

Interfacing

. I

•••

•••••

•••••••••••

•••••

••

••••

I I • I I • 2-8

SMPTE

Edltors/RS422 I

••

•••••••••••••••

I • I I

••

I I • I

•••••

I • 2-9

A53-D

Interfacing

I I • I I

••

.".

•••••••••••

•••••••••••••••

I • I

••

2-10

GPI

Connections

..................................................

2-11

GPllnputs

.................................................

GPI

Outputs

..................................

••••••••••••

2-13

Analog

Output

Configuration/Alignment

.............................

2-14

Introduction

...............................................

2-14

Determining The

I/O

Board Version

.............

I • I

•••••••••••

12-14

Y,R-Y,B-Y

With Sync

(-ol,02

Versions)

......................

2-15

Y,R-Y,B-Y

With

Sync (-01,02 Versions)

....

••••••

••••••••••••

2-17

R,G,B

With Sync

Green

(-01,02 Versions)

...

•••••

•••

I I I I I I • 12-19

R,G,B

With

Sync (-01,02 Versions) I I I

I I I I I I I I I • I I • I I I I I I I I .2-22

Preview

Alignment

(-01,02 Versions)

•••••

••

I I • I

••••

••

I I • I .2-25

Jumper

Descriptions(-03,04Versions,

Piggyback)

.............

2-27

Output

Level

Adjustment

(-03,04 Versions,

Piggyback)

.....

•••

2-29

Jumper

Descriptions (-04 Version With

Piggyback,

525 only)

....

••

2-31

Output

Level

Adjustment

(-04 Version With

Piggyback,

525 Only)

2-32

Preview

Alignment

(-03,04 Versions,

with

without

Piggyback)

....

2-35

Power Procedures

.................................................

2-36

Powering UpThe System

••••••••

••

•••••

••

••••

••

I • I 2-36

Power-Down

Procedure

...........

••

I • I

••••••••

••

••••

12-37

SystemTIming

....................................................

2-38

ABLE

OF CONTENTS A60 Technical Manual

SECTION 3: SYSTEM DESCRIPTION

SYSTEM

DESCRIPTION

.........................................

3-1

Description of

the

Assemblies

.......................................

3-1

Main

Chassis.Read/Write Boards

..............................

3-1

Computer

Board

............................................

3-1

Main Chassis

Input/Output

Board

.............................

3-2

Disk

Drive Boards

...........................................

3-2

PowerSupplies

.............................................

3-3

Control Panel

..............................................

3-3

System Block

Diagram

Backplane

Wiring Schematics

Sheets)

Parts

List

SECTION 4: READIWRITE BOARDS

BOARD

DESCRIPTION

.........................................

4-1

Introduction

......................................................

4-1

Off Disk

Decoder

..................................................

4-1

READ

PICT

Signal

...........................................

4-2

Flaw

Map

and

SWOP

Selection

...............................

4-2

Serial

Parallel Conversion

..................................

4-2

Flaw

Map

0:9

Bus

........................................

4-3

Une Assembly Store

.........................................

4-3

Framestore

...........................

4-3

Framestore RAM

............................................

4-3

Write Address

Generator

....................................

4-4

Read Address

..............................................

4-6

Read/WriteSelection

.......................................

4-6

Generating

the

Framestore ControlSignals

.....................

4-6

Interpolator

......................................................

4-7

The InterpolatorCircuitry

....................................

4-7

Disk Encoder

.....................................................

4-8

Sector

Header

Generator

....................................

4-8

RAM BufferControl

and

Clocks

...............................

4-9

Buffer RAM Address

Generator

...............................

4-9

RAM Buffer

................................................

4-9

Flaw Encoder

..............................................

4-10

Clock

and

Computer

Board

Interface

................................

4-10

Block

Diagram

(3 Sheets)

Schematics

(17

Sheets)

Parts

List

ii 74-M051-A2.

JAN91

A60 Technical Manual

TABLE

OF CONTENTS

SECTION 5: COMPUTER BOARD

BOARD

DESCRIPTION

...................•.....................

5-1

Functions

Each Microprocessor:

............................

5-1

HLC

CPU

........................................................

5-1

Timecode

Reader

for

the

HLC

................................

5-3

LLC

CPU

.........................................................

5-4

Auxiliary

CPU

.....................................................

5-5

Graphics

Computer

.•.............................................

5-5

SCSI

and

Ethemet

..........................................

5-6

DMA

......................................................

5-7

MiscellaneousCircuits

.......................................

5-7

Block

Diagram

(3 Sheets)

Schematics

(13 Sheets)

Parts

List

SECTION 6: INPUT/OUTPUT BOARD

BOARD

DESCRIPTION

...................................•.....

6-1

74-M051-A2

JAN91

The

Input

Side

....................................................

6-1

CCIR601

and

SCSI

Input

.....................................

6-1

Luminance

Une AssemblyStore

...............................

6-2

Addressing

the

Une Assembly Stores

..........................

6-3

Input

Une Numbers

.........................................

6-3

SCSI

Coder

................................................

6-3

The

Output

Side

.............

......................................

6-4

Analog

Outputs

............................................

6-4

601

Outputs

...............................................

6-5

Sync

Generator

...................................................

6-6

Reference

Processor

........................................

6-6

54MhzOscillator Phase Comparator/Error

Generator

............

6-7

Sync

Generator

............................................

6-7

Computer

Control

................................................

6-8

Block

Diagram

(4 Sheets)

Schematics, 625 (18 Sheets)

Parts

List

Schematics, 525 (18 Sheets)

Beta Level 1

Schematic

Sheet)

Parts

List

iii

TABLE

OF CONTENTS A60 Technical Manual

SECTION 7: CONTROL PANEL

BOARD

DESCRIPTIONS

......................•..•..............

7-1

CPU

Board

.......................................................

7-1

The Trackball

...............................................

7-1

DART

and

PowerInputs

......................................

7-2

Switchboard

.....................................................

7-2

Block

Diagram

Sheet)

CPU

Board

Schematic

Sheet)

Switchboard

Schematic

Sheet)

SwHch Listing

Parts

List

SECTION 8: DISK DRIVES

A60

DISK

DRIVES

............................................

8-1

General

.........................................................

8-1

Ribbon

Cables

from

the

A60

.................................

8-1

Disk

Input/Output

Board

............................................

8-2

Servo Circuitry

.............................................

8-3

Power

Check

...............................................

8-3

Write Circuitry

..............................................

8-4

Read Circuitry

..............................................

8-4

Disk Read/Write Board

.............................................

8-6

Write Processing

............................................

8-6

Read Processing

...........................................

8-7

Disk Drive

Interconnection

Block

Diagram

Sheet)

Disk Drive Assembly Block

Diagram

Sheet)

Disk

I/O

Board

Schematics

(4 Sheets)

Disk R/WBoard

Schematics

(3 Sheets)

Parts

List

SECTION 9: POWER SUPPLIES

POWER

SUPPLIES

.....•..................•....................

9-1

Servicing

•...•....................................................

9-1

PowerSupplyAdjustments

.........................................

9-2

Cherokee

Supply

...........................................

9-2

Main

Chassis Access

........................................

9-2

Disk

Chassis Access

.........................................

9-2

PowerSupply

Replacement

........................................

9-4

Cherokee

Supply,

Main

Chassis

...............................

9-4

Tamura Supply,

Main

Chassis

.................................

9-5

74-M051-A2

JAN91

A60 Technical Manual

TABLE

OF CONTENTS

SECTION 10: MAINTENANCE

MAINTENANCE

..............................................

10-1

54Mhz Oscillator

Adjustment

........................................

10-1

Analog

Output

Configuration/Alignment

.............................

10-3

Introduction

...............................................

10-3

Determining The

I/O

Board Version

............................

10-3

Y,R-Y,B-Y

With Sync

(-01

,02 Versions)

......................

10-5

Y,R-Y,B-Y

With

Sync (-01,02 Versions)

........................

10-7

R,G,B

With Sync

Green

(-01,02 Versions)

.....................

10-9

R,G,B

With

Sync (-01,02 Versions)

...........................

10-12

Preview

Alignment

(-01,02 Versions)

...........................

10-15

Jumper

Descriptions(-03,04 Versions,

Piggyback)

.............

10-17

Output

Level

Adjustment

(-03,04 Versions,

Piggyback)

.........

10-19

Jumper

Descriptions (-04 Version With

Piggyback,

525 only)

.......

10-21

Output

Level AdJustment (-04 Version With

Piggyback,

525 Only)

10-22

Preview

Alignment

(-03,04 Versions,

with

without

Piggyback)

....

10-25

Troubleshooting

the

A60 Disk DriveSystem

............................

10-26

Luminance

Chrominance?

.............................

10-27

Ita

Read

a Write Problem?

...............................

10-27

50 (60)

Second

A60s

........................................

10-28

Swapping

the

A60 Read/Write Boards

.........................

10-28

The

Defect

File

(Flaw

Map)

PROMs

............................

10-29

The

Hidden

..........................................

10-30

the

Drive

Won't

Come

'UP'

.................................

10-34

PowerSupplies

.............................................

10-34

First

Birthday'

..............................................

10-35

A60

Disk

Drive

Input/Output

Board

Replacement

................

10-36

A60

Disk

Drive Read/Write Board

Replacement

.................

10-37

A60 Priam

Motor

Control (Servo) Board

Replacement

............

10-39

Disk

Drive

Replacement

.....................................

10-41

Disk

Drive

Cable

Interconnect

Guide

..........................

10-43

Priam Read/Write-Digital Board

...............................

10-43

Drive RelatedTroubleshooting

FI~wchart

APPENDIX

CCIR/EBU

601

Digital

Video

...................................

1-1

74-M051-A2

JAN91

The

Concept

..............................................

1-1

Digital

Sampling

............................................

1-1

Quantizing Levels

...........................................

1-2

Timing

Reference

Signals

(TRS

words)

..........................

1-2

Vertical

Blanking

...........................................

1-2

The

Clock

Signal

............................................

1-2

The Physical Considerations

..................................

1-3

TABLE

OF CONTENTS

A60 Technical Manual

74-M051-A2

JAN91

INTRODUCTION

Description

The A60

a real-time componentdigital recordingdevice,providingreal-time playback

forward

reverse, variable playbackspeeds and random access

recordedmaterial. The

A60

confonns to the 4:2:2 component digital standard and provides CCIR 601 input and

output ports for interface to other CCIR 601 equipment, making it ideal to use

various

graphics environments.

Functionally, the A60 will perfonn like a playback:

a record VTR, configured

one

two capacities; the standard configuration

either 25 seconds for the 525 version

seconds for the 625 version, and the optional configuration

seconds for the 525 ver-

sion

seconds for the 625 version.

The

A60

hastwo CCIR 601 videoinputports, eitherone may be selectedfor recordingpur-

poses. The Abekas

CoxDV

210 digital video encoder should be used

the input is to be

originatingfrom

analogcomponentsource,suchas anROB camera

acomponentVTR.

The

A60

has several video output configurations present. The program output is available

both

the digital CCIR 601 fonnat, and as an analog signal thatis eitherROB

Y, R-Y,

B-Y. Sync is available as a seperate output

and

may

be added to the 0 or Y output. The

preview output is available

either

the analog fonnats, and will only differ from the

programoutput bythe presence

the timecode andframe positioninfonnationplacedover

it.

The

A60

may also have digital video transfer and remote machine control acomplished

using eitherthe Ethernet

the SCSI ports.

The

Ethernet port follows the TCP/IPstandard,

andsupports remote login, FTP and TELNET.

The

SCSI port

used typically for

off

line

storage

video using standard 9-track magnetic streamertape.

A60

Technical

Manual Rev

1.1

PRELIMINARY

Physical Description

Ina

(or30

625) second version, the A60 consists

a mainelectronics chassis with

integral Winchester disk drive assembly, and a control panel. A 50 (or 60

625) second

version requires

additional disk drive assembly to

mounted nearthe main electronics

chassis.

Control Panel

The compact control panel (4.5"H x 11.75"W x 3.5"D) consists

a 5 digit frame number

or timecode display, a trackball, control keys and a numeric keypad. There is also a

monochrome analog video output from the control panel

be fed to a black and white

monitorfordisplaying system status and allowing access to

the

various features

the

A60.

The 5 digit display will show the current position

the disks either

a frame number or

a timecode number.

The trackball

may

used for browsing through the material

the disks, as well

for sys-

tem timing operations.

The numeric keypad allows instant access to a frame/field number,

well as providing a

means to precisely set system set-up values.

The control keys consist

of;

disk control keys using normal transport command terminol-

ogy, segment control keys for defining in and out points

a segment or a loop, and

func-

tion keys for system set-up, configuration and access

the menu monitor functions.

Main ElectronicsChassis

The systems main electronics chassis

(12.2SItH

rackmount) contains the printed circuit

boards that control the various aspects

the A60, as well

a Winchester disk drive

as-

sembly that will provide

seconds (or30

625)

time for the A60 system.

Additional Disk Drive ChaSSis (optional)

The optional disk drive chassis

1tH rackmount) will provide

additional

seconds (or

625)

time for the A60 system, making a total

50 seconds (or60

625) possible.

A60 Technical Manual Rev

1.1

PRELIMINARY 2

Altri manuali per A60

Indice

Altri manuali Abekas Registratore digitale

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