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Control Data Corporation Manuals
Adapter
DU 137-A
Hardware maintenance manual
Control Data Corporation DU 137-A Hardware Maintenance Manual
Asynchronous communications line adapter
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Revision Record
Equipment Type
List of Effective Pages
Table of Contents
General Description
Introduction
Physical Description
ACLA Characteristics
System Application
Features
Half- and Full-Duplex Operation
Code Lengths
Character Parity Generation/Detection
Automatic Answering
ACLA Card Placement
Physical Characteristics
Nonoperating Environmental
Operating Environmental Requirements
Signaling Rate Selection
Restraint Signal Detection
Data Transfer Overrun
Loopback Test
Modem Interface
Functional Description
Operational Concept
Functional Sections
Input Section
Data Input
Input Error Conditions
Output Section
Data Output
Echoplex Mode
Break Generation
Loop Error Detection
CLA Addressing
Master Clear
Modem Interface Section
Speed Generators
Operation
Controls and Indicators
Operating Procedures
Programming Considerations
Address Switches
Controls and Indicators
ACLA Card Handle
Multiplexing Subsystem Overview
Line Frame Formats
Loop Cell Structure
Cell and Word Formats
Addressing Cell
Data Cell
Supervision Cell
Status Words
Command Words
Cell Frame Formats
Addressing Code Format
Data Cell Format
Status Word 1 Format
Status Word 2 Format
Command Word 1 Format
Command Word 2 Format
Common Baud Rates and Command Codes
Command Word 3 Format
Programming Notes
ACLA Initialization
Communications Line Connection
Input Operation
Character Length and Parity Status Code
Command Word 4 Format
Output Operation
Loopback Test Operation
Break/Open-Line Detection
Restraint Detector
Installation and Checkout
Uncrating
Installation
Circuit Card Types
Cable Types
Circuit Card Locations
Card Location Priorities
Typical ACLA Cable Connectors
Card Installation
Component Location, Stand
Priorities of Loop Multiplexer
Cable Installation
Initial Checkout
Crating and Shipping
Theory of Operation
Introduction
Output Section
Bus Buffers
Select Output
Format Decode
Command Counter
Command Registers
Universal Asynchronous Receiver/Transmitter
Timing Diagram
UART Transmitter Block Diagram
UART Transmitter Timing Diagram
UART Receiver Block Diagram
Input Section
Input Control (IC2-IC1) States Diagram
Input Control (ODD, DATA, SUPV) Timing Diagram
Input Control (SUPV Only) Timing Diagram
Input Control (DATA Only) Timing Diagram
Input Control (ODD Only) Timing Diagram
Input Multiplexer
Strapping Points
Modem Interface Timing Diagram
Speed Generator Timing Diagram
Troubleshooting
Maintenance
Pin Connections
Interface Signals
Loop Multiplexer-To-ACLA
Modem-To-ACLA Interface Signals and Pin Connections
Led Indicators
Preventive Maintenance
Parts Data
Assembly Parts List
Feet Meters
Wire Lists
DU189-A/B, DU190-A/B, and DU191-A/B Cable Sets
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CONTf\.OL DATA
COf\.PORATION
coc®
ASYNCHRONOUS
COMMUNICATIONS LINE ADAPTER
DU 137MA
DU 189-A/ B
DU 190-A/B
DU 191- A/B
HARDWARE MAINTENANCE MANUAL
74700900.
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This manual is also suitable for:
Du 189-a
Du 189-b
Du 190-a
Du 190-b
Du 191-a
Du 191-b
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