HP 27140A Manuals

Manuals and User Guides for HP 27140A. We have 1 HP 27140A manual available for free PDF download: Hardware Reference Manual

HP 27140A Hardware Reference Manual

HP 27140A Hardware Reference Manual (62 pages)

Asynchronous 6-Channel Multiplexer (with Modem Control)  
Brand: HP | Category: Multiplexer | Size: 2.25 MB
Table of contents
Table Of Contents7................................................................................................................................................................
General Information9................................................................................................................................................................
Description9................................................................................................................................................................
Specifications10................................................................................................................................................................
Features10................................................................................................................................................................
Functional Specifications10................................................................................................................................................................
Capacity10................................................................................................................................................................
Communications11................................................................................................................................................................
Edit Functions11................................................................................................................................................................
Electrical And Physical Specifications12................................................................................................................................................................
Direct Current Requirements12................................................................................................................................................................
Physical Dimensions12................................................................................................................................................................
Environmental Specifications12................................................................................................................................................................
Firmware12................................................................................................................................................................
Equipment Supplied12................................................................................................................................................................
Options And Additional Equipment13................................................................................................................................................................
Suggested Cables For Use With Terminals13................................................................................................................................................................
Suggested Cable For Modem Installations13................................................................................................................................................................
Rs-232-c Junction Panel13................................................................................................................................................................
Documentation Required For Installation14................................................................................................................................................................
Product Identification14................................................................................................................................................................
Support Strategy15................................................................................................................................................................
Cable Repair15................................................................................................................................................................
User Responsibility15................................................................................................................................................................
System Console15................................................................................................................................................................
Buffer Capacity16................................................................................................................................................................
Installation I Configuration17................................................................................................................................................................
Site Preparation17................................................................................................................................................................
Unpacking And Examining The Pca18................................................................................................................................................................
Storage18................................................................................................................................................................
Checking Power Requirements18................................................................................................................................................................
Power Availability Formula18................................................................................................................................................................
Inserting The Card19................................................................................................................................................................
Removing The Card19................................................................................................................................................................
Testing The Unit20................................................................................................................................................................
Attaching The Cables20................................................................................................................................................................
Mux-to-junction Panel Cable20................................................................................................................................................................
Rs-232-c Cables22................................................................................................................................................................
Functional Description23................................................................................................................................................................
Main Sub-assemblies23................................................................................................................................................................
Printed Circuit Assembly23................................................................................................................................................................
Multiplexer-to-panel Cables23................................................................................................................................................................
Device Types Accepted24................................................................................................................................................................
Variations From Rs-232-c24................................................................................................................................................................
Organization25................................................................................................................................................................
The Circuit Planes25................................................................................................................................................................
Backplane Interface Circuits25................................................................................................................................................................
Frontplane Circuits25................................................................................................................................................................
Functional Blocks26................................................................................................................................................................
Clock Driver27................................................................................................................................................................
Microprocessor27................................................................................................................................................................
Eprom27................................................................................................................................................................
Ram27................................................................................................................................................................
Serial Communications Controllers28................................................................................................................................................................
Line Drivers And Receivers28................................................................................................................................................................
Troubleshooting29................................................................................................................................................................
Description Of Self Test29................................................................................................................................................................
Results29................................................................................................................................................................
In Case Of Failure30................................................................................................................................................................
Component Parts33................................................................................................................................................................
Ordering Information34................................................................................................................................................................
Reference39................................................................................................................................................................
Other References39................................................................................................................................................................
Glossary40................................................................................................................................................................
Safety Ground44................................................................................................................................................................
Supported Modems44................................................................................................................................................................
Connecting Cables (rs-232-c)45................................................................................................................................................................
Diagrams47................................................................................................................................................................

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