Lear Siegler ADM 3A User manual

ADM·3A
interactive display terminal .
OPERATORS
MANUAL
lEAR SIEGLER. INC.

ADM-3A
OPERATORS MANUAL
IPlill LEAR SIEGLER INC.
~. DATA PRODUCTS DIVISION
714 NORTH BROOKHURST STREET. ANAHEIM. CALIFORNIA 92803
:S1979 LEAR SIEGLER, INC.
May 1979

____ LEAR SIEGLER. INC.
DATA PRODUCTS DIVISION
TABLE OF CONTENTS
SECTION
PAGE
1GENERAL DESCRIPTION
1.1
1.2
1.3
1.4
1.5
1.6
1.7
INTRODUCTION •••••.........•••.••••.......•
PURPOSE AND USE ..
OPERATIONAL DESCRIPTION .......•••••.•••..•
1.3.1 Keyboard .
1.3.2 Input/Output (I/O) Channel .•.•..••
1.3.3 ADM-3A Control Logic .
1.3.4 Display Memory .
1.3.5 CRT Display Monitor .
PHYSICAL DESCRIPTION .......•.••••.•.......
SPECIFICATIONS ........••••.•.••...•...•..•
1. 5.1 Send/Receive Modes .
1.5.2 Character Format ~ .
1.5.3 Word Structure .
1.5.4 Data Entry and Overflow .
1.5.5 Configuration Control ......•......
OPTIONAL FEATURES .........••••••••••••....
RELATED DOCUMENT ....•.•..•••••..•••...•..•
1-1
1-1
1-2
1-2
1-2
1-2
1-2
1-4
1-4
1-4
1-4
1-7
1-7
1-7
1-9
1-12
1-13
2INSTALLATION
DPI04
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
INTRODUCTION •..••••••••••...•.....••••••••
SAFETY REQUIREMENTS •...•.•••••••••••..••..
SITE REQUIREMENTS ..........•..............
UNPACKING AND INITIAL INSPECTION .•........
INITIAL PREPARATION .............•.........
2.5.1 Line Voltage Selection .
2.5.2 Configuration Control Switch
Settings .
INTERFACE INFORMATION ..•...•..•..••.••••••
2.6.1 RS-232C MODEM Port Interface .
2.6.2 RS-232C EXTENSION Port Interface ..
INSTALLING THE ADM-3A .
TORN-ON and TURN-OFF PROCEDURES .
2.8.1 Turn-On Procedures .
CARE OF THE ADM-3A TERMINAL DISPLAy •..••.•
2.9 .. 1 Cleaning .
2. 9 • 2 Inspection .•......................
i
2-1
2-1
2-1
2-2
2-2
2-2
2-3
2-6
2-6
2-6
2-6
2-10
2-10
2-12
2-12
2-12

____ LEAR SIEGLfA, INC,
DATA PRODUCTS DIVISION
TABLE OF CONTENTS (cont'd)
SECTION PAGE
3OPERATING INSTRUCTIONS
3.1
3.2
3.3
3.4
INTRODUCTION ••.••.••••......•.••••••......
KEYBOARD OPERATIONS ••.........••••••• , .•..
3.2.1 Displayable Character Keys .
3.2.2 Special Function Keys .
INTERFACE CONTROL OPERATIONS .......••••• ,.
3.3.1 Code Turnaround Operation .
3.3.2 Reverse-Channel Turnaround
Operation " .
PROGRAMMING CONSIDERATIONS •..•••••....•••.
3.4.1 Remote CTRL Operation .
3.4.2 Remote Load-Cursor Operation .
ii
3-1
3-1
3-1
3-3
3-8
3-9
3-9
3-10
3-10
3-10
DP104

____ LEAR SIEGLER, INC,
DATA PRODUCTS DIVISION
LIST OF FIGURES
FIGURE
1-1
1-2
1-3
1-4
ADM-3A Interactive Display Terminal .
AOM-3A
Data Flow Block Diagram .
ADM-3A
Graphic Character Set and CTRL Codes .
Word
Format Codes with Front Panel Switch
PAGE
vi
1-4
1-9
Configurations 1-10
1-5 Front Panel Switch Locations 1-11
2-1
2-2
2-3
2-4
3-1
3-2
DPI04
ADM-3A Configuration Control Switch Locations.: .
Typical ADM-3A Interfaces .
ADM-3A
Interface Logic .
ADM-3A Rear Panel Controls .
ADM-3A Standard Keyboard .
Chart of Absolute Cursor Positioning Codes .
iii
2-3
2-7
2-8
2-11
3-2
3-4

____ LEAR SIEGLER. INC.
DATA PRODUCTS DIVISION
LIST OF TABLES
TABLE PAGE
1-1
2-1
2-2
3-1
ADM-3A Specifications .
Configuration Control Switch Functions '"
Data Interface Connector Pin/Signal List .
ADM-3A
Control Codes .
iv
1-5
2-4
2-9
3-5
DPI04

____ LEAR SIEGLER, INC.
DATA PRODUCTS DIVISION
PREFACE
This Operator's Manual describes the function and operation of
the ADM-3A Data Display Terminal. The instructions and informa-
tion are presented to aid operational personnel in the installa-
tion, operation, and care of the ADM-3A. All operator controls
are described in detail, and remote programming considerations
are presented in sufficient detail to enable an experienced
operator to use the equipment efficiently when confronted with
non-standard applications.
The major topics described in.the manual include:
Section 1 General Description
Section 2 Installation
Section 3 Operation
v

____ LEAR SIEGLER. INC.
DATA PRODUCTS DIVISION
104-01
Figure 1-1. ADM-3A Interactive Display Terminal
vi
DP!04

____ LEAR SIEGLER. INC.
DATA PRODUCTS DIVISION
SECTION 1
GENERAL
DESCRIPTION
1.1 INTRODUCTION
This section contains a description of the primary' functions of
the Lear Siegler ADM-3A Interactive Display Terminal (see fig-
ure 1-1), along with physical dimensions, specifications,
ranges, and operating features.
1. 2PURPOSE AND USE
There are numerous applications of the ADM-3A, all involving the
transfer of asynchronous data. Data transfer in some applica-
tions, may be exclusively unidirectional; either from the ADM-3A
to the computer, or from the computer. Amore frequentapplicatJ.on
of the ADM-3A
r
however, is one in which an operator communicates
with a computer, and the computer responds in accordance with its
stored program.
The ADM-3A has the following general capabilities:
• Full 128 ASCII character set wirh 80 x12 (optional
80 x24) character non glare display
• 11 communication rates in full duplex and half duplex
send/receive modes
•
Selectable downline scrolling or bottom line entry
• Local and remote absolute cursor positioning
• Variable 10- or II-bit word structures
• Selectable AUTO New Line operation
• Selectable standard RS-232C or 20mA current loop inter-
face, with RS-232C extended interface for auxiliary
devices
DPI04
1-1

____ LEAR SIEGLER. INC.
OATA PRODUCTS DIVISION
1.3 OPERATIONAL DESCRIPTION
The ADM-3A is an interactive device which is used to enter, dis-
play, and send information to a host computer, and to receive
and display information from the computer. Using a keyboard
similar to that of a teletypewriter an operator may enter infor-
mation which is immediately transmitted to the computer (and
may be simultaneously displayed on aCRT). Data from the com-
puter is received and displayed at a rate as great as 1920 char-
acters per second. Figure 1-2 illustrates the functional areas
of the ADM-3A and the overall flow of data through them.
1.3.1 Keyboard
Data to be processed by the terminal originates either at the
keyboard or with the host computer. Keyboard entry is made
using one of the 59 keys on the keyboard. Each key-stroke is
encoded into a parallel ASCII character which is immediately
transmitted to the host computer. The character is also echoed
back to the CRT display: directly, via the I/O Channel, in Half
Duplex operation; via the host computer and the I/O Channel, in
Full Duplex operation.
1.3.2 Input/Output (I/O) Channel
The I/O Channel is the link, or interface, which handles the
flow of data in both directions between the ADM-3A and the com-
puter. In Half Duplex operation, the I/O Channel also routes
each character entered and. transmitted back to the Control Logic
and Display Memory for CRT display. The I/O Channel includes
the baud rate selection logic and the RS-232C extension cir-
cuitry.
1.3.3 ADM-3A Control Logic
The ADM-3A Control Logic interprets all the control codes which
originate either at the keyboard or host computer, and directs
the activities of the ADM-3A accordingly. These activities
include: basic timing; data, handling and formatting; video and
status control; and I/O interfacing control.
1.3.4 Display Memory
The
Display Memory contains the random access memory (RAM),
video logic, and character generation circuits appropriate for
controlling the CRT display. The memory is capable of holding
960 (optionally 1920) characters, which are stored in sequen-
tially scanned locations. The scanned data is sent to the CRT
for display. Input to the Display Memory consists of the data
character codes from the I/O Channel, under the control of Con-
trol Logic signals.
1-2
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