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6020 Series
Technical manual
Data General 6020 Series Technical Manual
Tape transport
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Contents
Table of Contents
Bookmarks
Table of Contents
Table of Contents
Overview
This Machine, an Introduction
Operators Panel and Control Logic
Data Handling Circuits
Capstan Servo System
Vacuum Column Servos
Technical Specifications and Ordering Information
This Manual
Logic Conventions
Drawings
Signal Levels
Signal Names
Reference Documents
Mechanical Assemblies
Introduction
Internal Wiring and Cables
Cable Connectors
Vacuum Blower Assembly
Power Supply
Vacuum Columns and Manifolds
Capstan/Tachometer Assembly
Reel Motors and Hub Assemblies
Transcription Head Assembly
Write Lock Switch Assembly
Miscellaneous Tape Path Elements
Tape Guides
Suction Tape Cleaner
Printed Circuit Boards
Transport Control Logic
Introduction
Operations Initiated at the Operators Console
Flowchart Conventions
Load Sequence
Unload (and Unwind) Sequence
Unload
Rewind Sequence
On Line Sequence
Reset Sequence
Control Signals Exchanged with the Tape Controller
Transport and Subsystem Timing
Start and Stop Delays
Character Spacing
References
Data Transfer and Transcription Systems
Introduction
Review of Data Transcription Principles
Writing Data
Reading Data
Terminology Conventions
Bits
Characters and Bytes
Records or Blocks
Data Writing Path
Data Receivers and Write Drivers
Deskew Register (Static Deskew)
Write Protection
Write Current Ground Isolation
Write Disabling on Failing Power
Data Reading Path
Analog Amplifier
The Full Wave Rectifier
Delay Line Peak Detector
Threshold Selection
Data Register and Line Drivers
Erase Function
References
Analog and Servo Functions
Introduction
What Is a Serv01
Operational Amplifiers as Analog Building Blocks
I Deal Operational Amplifier
Scalar Multiplier
Followers
Differentiator
Integrator
Summing Amplifier
Important Considerations
Amplifier St Ability
External Compensation
Internal Compensation
Analog Switches
N-Channel Analog Switch
P-Channel Analog Switch
Servo Disabling Interlocks
Vacuum Column, Tape Buffer Servo System
Vacuum Transducer
Servo Preamplifiers
Summing Amplifier and Biasing Circuits
Gain Selectors
Differentiator
Bias Circuits
Reel Motor Drivers
Signal Polarity and Motor Rotation
Capstan Servo System
Motion Selection and Ramping, 75Ips
Motion Selection and Ramping, Rewind
Velocity Control Tachometer
Capstan Summing/Driver Amplifier
Capstan Ground Isolation
References and Bibliography
Power Supply and Distribution
Introduction
Supply Specification
Overview
Fuses
Remote Energizer
Const Ant Volt Age Transformer
DC Grounds Isolation
Voltage Regulators
Volt Regulator
Volt Regulators
Over Volt Age Protection
Technical Specifications
General
Mechanical
Environment al
(Early Version, 6020 Series Tape Transport)
Introduction
Printed Circuit Boards
Air Flow and Ventilation in the Transport
Supply Voltages
Configuration
Fuses
Remote Energizer
DC Grounds Isolation
Rectifiers, DC Breaker and Non-Regulated Russes
Regulators
Switching Regulators
Linear, Series-Connected Regulators
Over Voltage Protection, the Crowbars
References
Documentation Summary
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