LA120 User Guide

Company:	Digital Equipment Corporation
Part:	EK-LA120-UG-004
Date:	1981-06
Keywords:	DECwriter III
Supersedes:	EK-LA120-UG-003, LA120 User Guide
Superseded by:	EK-LA120-UG-005, LA120 User Guide

Introduction
Chapter 1 Operator Information
- Part 1 General User Information
  - Operator's Console
    - Lights
    - Numeric Display
    - Local Control Keys
    - SET-UP Keys
    - Control Character Keys
    - Control Keys
    - Other Keys
    - Optional Numeric Keypad
    - Power On/Off Switch
    - Cover Interlock Switch
    - Paper Adjust Knob
    - Carriage Adjustment Lever
    - Tractor Adjust Knobs
  - Alarm Indicators
  - Testing and Troubleshooting the LA120
    - Operator's Troubleshooting Table
    - Sample LA120 Operator's Card
- Part 2 Description of LA120 Features
  - Form Set-Up Features
    - Recommended Sequence for Setting Up a Form
    - Sample Form SET-UP
    - SET-UP Mode
    - Selecting Lines Per Inch
    - Setting Form Length
    - Top of Form (TOF)
    - Top and Bottom Margins and Vertical Tabs
    - Displaying Line Number of a Vertical Tab or Margin
    - Setting Top Vertical Margin
    - Setting Bottom Vertical Margin
    - Clearing Vertical Margins
    - Setting Single or Multiple Vertical Tabs
    - Clearing a Single Vertical Tab
    - Clearing all Vertical Tabs
    - Characters Per Inch (Horizontal Pitch)
    - Horizontal Margins and Tabs
    - Displaying Column Number of a Horizontal Tab or Margin
    - Setting Left and Right Margins
    - Clearing Left and Right Margins
    - Setting Horizontal Tabs
    - Clearing a Single Horizontal Tab
    - Clearing all Horizontal Tabs
  - Operator Comfort Features
    - Auto Repeat
    - Last Character View
    - Bell Volume
    - Key Click
  - Communication Features
    - Line/Local
    - Baud Rate (Speed)
    - Answerback
    - Transmitting or Printing the Answerback Message
    - Entering/Deleting Answerback Message
    - Auto Answerback
    - Buffer Control
    - Keyboard and Printer Character Set
    - Printer Character Set
    - Auto Disconnect
    - Local Echo
    - Auto New Line at Right Margin
    - Auto Line Feed
    - Modem
    - Half Duplex (HDX) Initial Calling State
    - Secondary Channel
    - Parity and Data Bits
    - Printer New Line Character
    - XON/XOFF
    - Alternate Keypad Mode
    - Alternate Character Set
    - Selecting Alternate Character Set
    - Manually Selecting APL
    - Manually Deselecting APL
    - Break Action
  - Store, Recall, and Status Features
    - Factory Stored Settings
    - Store/Recall
    - Status
    - Self-Test Feature
- Part 3 Ribbons, Forms, and Impressions
  - Installing Ribbon
  - Print Impression Adjustment
  - Loading Paper/Forms
  - Reloading Paper/Forms
Chapter 2 Installation, Interface, and Specifications
- Installation and Configuration
  - Unpacking and Inspection
  - Voltage Selector Switch
  - Packing Procedures
  - Checkout Procedure
  - Answerback Jumper
- Interface Information
  - EIA Interface
  - EIA Cables
- Impedance of Terminator
- Rise and Fall Times
- Open Circuit Voltages
- LA120 Specifications
Chapter 3 Programmer Information
- General
- Escape Sequences
  - Printer Character Sets
  - Optional Character Sets
  - Active Column and Active Line
  - Linefeed Newline Mode
  - Horizontal Pitch
  - Horizontal Margins
  - Horizontal Tabs
  - Vertical Pitch
  - Form Length
  - Vertical Margins
  - Vertical Tabs
  - Product Identification
  - Alternate Keypad Mode
- Control Characters
- APL Character Set
- Sample Form SET-UP Using Escape Sequences
- Synchronization
- Fill Time Formulas
  - Horizontal Movement
  - Vertical Movement
- Keyboard Operation
  - Auto Repeat
  - Printable Character Keys
  - Control Character Keys
  - Optional Auxiliary Keypad
  - BREAK Key
  - VIEW Key
Chapter 4 Communications
- Full Duplex (FDX)
  - Full Duplex Connection Requirements
  - Full Duplex Break
  - Full Duplex Disconnect Conditions
  - Restraint Mode vs Speed Control Mode
- Half Duplex (HDX)
  - Initial Direction Determination
  - Reverse Channel
  - Modem Delay
  - Request to Send Delay
  - Turnaround Characters
  - Half Duplex Break
  - Loss of Data Set Ready
  - Half Duplex Disconnect
- Modem Set-Up Feature Description
  - General
  - Half Duplex
- Effects of Paper Out
Chapter 5 Options
- 20 mA LA12X-AL
  - Installation
  - Test After Installation
- LA12X-DL Expanded Buffer
Chapter 6 Accessories and Supplies

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Address:	http://vt100.net/dec/la120ug4.pdf
Site:	Paul Williams' VT100.net
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LA120 User Guide

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