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 Contents
7
1 General Information

9
- Description
  9
- Specifications
  10
  - Features
    10
  - Functional Specifications
    10
    
    Capacity
    10
    
    Communications
    11
  - Edit Functions
    11
  - Electrical and Physical Specifications
    12
    
    Direct Current Requirements
    12
    
    Physical Dimensions
    12
  - Environmental Specifications
    12
  - Firmware
    12
- Equipment Supplied
  12
- Documentation Required for Installation
  14
- Product Identification
  14
- Support Strategy
  15
  - Cable Repair
    15
  - User Responsibility
    15
- System Console
  15
- Buffer Capacity
  16
2 Installation I Configuration

17
- Site Preparation
  17
- Unpacking and Examining the PCA
  18
  - Storage
    18
- Checking Power Requirements
  18
  - Power Availability Formula
    18
- Inserting the Card
  19
- Removing the Card
  19
- Testing the Unit
  20
- Attaching the Cables
  20
  - MUX-To-Junction Panel Cable
    20
  - RS-232-C Cables
    22
3 Functional Description

23
- Main Sub-Assemblies
  23
  - Printed Circuit Assembly
    23
  - Multiplexer-To-Panel Cables
    23
  - RS-232-C Junction Panel
    24
    
    Device Types Accepted
    24
    
    Variations from RS-232-C
    24
- Organization
  25
- The Circuit Planes
  25
  - Backplane Interface Circuits
    25
  - Frontplane Circuits
    25
  - Functional Blocks
    26
    
    Clock Driver
    27
    
    Microprocessor
    27
- Eprom
  27
  - Ram
    27
  - Serial Communications Controllers
    28
  - Line Drivers and Receivers
    28
4 Troubleshooting

29
- Description of Self Test
  29
  - Results
    29
  - In Case of Failure
    30
5 Component Parts

33
- Ordering Information
  34
6 Reference

39
- Other References
  39
- Glossary
  40
- Safety Ground
  44
- Supported Modems
  44
- Connecting Cables (RS-232-C)
  45
7 Diagrams

47

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