Table of Contents
Advertisement
_ ,_ _ LEAR SIEGLER, INC.
DATA PRODUCTS DIVISION
SECTIC)N I
GENERAL
DE~SCRIPTION
1.1 INTRODUCTION
This lsection of the manual describes the primary
function of the Lear Siegler ADM 3A video
display tenninalsho\\rn in
Figure I-I, page 1-0.
Other information in this section includes
specifications, operating features and ranges,
physical dimensions, and a list of available
options.
1.2 PURPOSE AND USE
There are numerous applications of the ADM SA,
all involving the transfer of asynchronous data.
In some applications, data transfer may b€
exclusively unidirectional; either from the ADM
3A to a host computer, or from the computer
to
the
ADM 3A. However, a more frequent application
of
thE~
ADM 3A is one in which an operator
communicates with
the computer, and the
computer reacts in accordance with its stored
program.
The ADM 3A features the following general
capabilities:
• FlJ:lll28 ASCII character set with 24 lines x 80
characters, non-glare display (24th line is used
in set-up mode
to
select terminal parameters)
• Eleven communication rates in full-duplex
and half-duplex send/receive modes
• Scrolling
• Absolute cursor positioning
• Variable 9-, I()., or II-bit word structures
• Upper and lower case characters standard
• Program mode
• Selectable auto new line operation
,
-
,
• Standard RS-232C or optional 20mA current
loop
interface,
with
RS-232C
extension
interface for auxiliary devices. (Selectable
keyboard lock or gated extension port).
Optional current loop interface on extension
port.
• DTR or X-an/X-Off handshake mode
• Special control character sequences
• Selectable refresh rate: 50 Hz or 60 Hz
• Non-volatile set-up mode for terminal
configuration
• Personality mode to designate unique
characters for:
- Fill character
- Turnaround code
- X-On IX-Off characters
- Answerback (with NVM optional)
• Six non-embedded visual attributes:
- Blank
- Blink
- Reverse video
- Underline
- Reduced intensity
- Character graphics
• CRT screen saver
• Full screen reverse video
• Selectable key click
• Business graphics
Advertisement
Table of Contents
