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
DPI04

____ LEAR SIEGLER, INC.
DATA PRODUCTS DIVISION
KEYBOARD
I,
DISPLAY
MEMORY
CRT DISPLAY
12 or 24 lines. MONITOR
80 charact8nl per Iina
v
\... ~
(Control)
INPUT/OUTPUT
CHANNEL
1;<-
,
(
) COMPUTER
AOM·3A I '
<-
CONTROL
""(:5
,"
HALF )•
LOGIC •DUPLEx
-V ,
,,Extension
";'
,.",}Interface
,.
"."
,I, ., ..
--
",
", .,
," To
Auxiliary
Device
104-02
Figure 1-2. ADM-3A Data Flow Block Diagram
DP104 1-3

____ LEAR SIEGLER, INC.
DATA PRODUCTS DIVISION
1.3.5 CRT Display Monitor
The CRT Display Monitor consists of a 12-inch (diagonal) screen
containing 12 lines (optionally 24) of 80 characters each. The
aD-character lines are displayed in large, clear letters, num-
bers and symbols at a refresh rate determined by the line fre-
quency.
L 4 PHYSICAL DESCRIPTION
The ADM-3A is a complete self-contained unit consisting of three
principal assemblies: base and cover assembly, main pr~nted
circuit board assembly (PCBA), and CRT monitor. The base por-
tion of the base and cover assembly contains the power switch,
power transformer, beeper speaker, and intercomponent cabling.
Supports and guide pins are provided in the base for installing
the main PCBA.
The cover part of the base and cover assembly contains the CRT
monitor and other monitor subassemblies. The cover is hinged
at the rear so that it can be swung open to expose all the com-
ponents of the ADM-3A.
The main PCBA contains all the operating elements of the ADM-3A
not contained in the CRT monitor and the base assembly, includ-
ing the keyboard. The keyboard consists of integrated key rows
and is built directly on the main PCBA. The PCBA rests on sup-
ports within the base and is held in place by guide pins. Two
connectors at the rear edge of the PCBA provide the RS-232C/
current loop interface and the RS-232C extended interface.
The CRT monitor is a fully transistorized unit featuring three-
subassembly construction: the CRT itself, a printed circuit
board assembly containing most video circuitry, and a flyback
assembly. The monitor display screen is a l2-inch diagonal CRT
similar to that of a black-and-white television receiver.
1. 5 SPECIFICATIONS
Table 1-1 lists the leading specifications for the ADM-3A. In
addition, several operational features, such as send/receive
modes, character format, word structure, data entry and over-
flow, and configuration control are discussed in the paragraphs
that follow.
1.5.1 Send/Receive Modes
Two switch-selectable send/receive modes are available in the
ADM-3A: Half Duplex (HDX switch position), and Full Duplex
(FDX switch position) .
1-4
DPI04

____ LEAR SIEGLER, INC.
DATA PRODUCTS DIVISION
Table 1-1. ADM-3A Specifications
SPECIFICATION DESC~IPTION
Input Power:
Standard
Optional
Power Dissipation
-Operating Temperature
Relative Humidity
Altitude
physical Dimensions
Weight
CRT Screen Size
Display Format
Character Set, Generated
Character Set, Displayed
Character Generation
Refresh Rate
Cursor:
Format Control ON
DP104
1-5
115 volts ±It, 50/60 Hz;
Single Phase; 3-wire
230 volts ±IOl, 50/60 Hz;
Single Phase; 3-wire
60 watts, nominal (rated:
O.67A at 120 volts)
Between 410F (SOC) and
1220F (50°C)
From 5% to 95% non-condensing
Up to 10,000 feet (3048M)
13.5 in. (34.3 em) High X
15.6 in. (39.6 em) Wide X
19.0 in. (48.3 em) Deep
32 pounds (14.54 Kg)
12 inches (30.5 em) diagonally
80 characters per line x 12
lines (optional 24 lines)
128 ASCII characters (with 32
control characters)
Standard: 64 ASCII characters
Optional: 95 ASCII characters
5 x 7 dot matrix, 0.18 in.
(0.46 em) high x 0.075 in.
(0.19 em) wide
50/60 Hertz (depending
upon line frequency)
Reverse video rectangle
(7 x 9 dot matrix) homing
to upper left of screen

____ LEAR SIEGLER. INC.
OATAPROOUCTS DIVISION
Table 1-1. ADM-3A Specifications (cant'Q)
SPECIFICATION OESCRIPTION
Format, Control OFF Double underline, 5 dots
wide, homing to first
position of bottom line
Control
Keyboard:
Const~ction
CTRL/H ( ~ ); CTRL/J ( • );
CTRL/K ( ~); CTRL/L I .. ) ;
CTRL/HOME; CTRL/M (RETURN);
absolute positioning
Solid state logic; similar
to teletypewriter layout
Key Assignment
Communications:
Alphanumeric
Special FunctiOn
Terminal Control
47
7
5
Standard Interface
Optional Interface
Data Transmission Rates
Transmission Modes
Code
for Transmission
lO-Bit Word Format
II-Bit Word Format
1-6
RS-232-Ci ZamA current loop;
extended RS-232C
Extended RS-232C cu=rent loop l
75, 110, 150, 300, 600, II
1200, 1800, 2400, 4800,
9600, 19200 baud
Half Duplex; Full Duplex
Asynchronous ASCII
(1) 7 oata bits; odd/even
parity; START bit,
(2) 8 data bits; START bit;
1STOP bit
(1) i data bies; START bit;
odd/even parity; 2STOP
bits
(2) 8 data bits; START bit;
odd/even parity; 1STOP
bit
DpI04

____ 1.EAR SIEGLER, INC.
DATA PRODUCTS OIVlSION
Half Duplex. In this mode, the ADM-3A can send and receive
infor.mation to and from the computer. As each character is
entered at the keyboard it is transmitted to the computer and
simultaneously echoed back from the I/O Channel for CRT display.
Full Duplex. The ADM-3A can transmit and receive information in
both directions simultaneously in full-duplex operation. Char-
acters are transmitted as they are entered at the keyboard, but
are displayed only on reception. In order for transmitted char-
acters to be displayed, they must be echoed back from the host
computer.
1.5.2 Character Format (See Figure 1-3.)
The standard ADM-3A character set contains 96 ASCII characters,
32 of which are control characters that require special ~~o-key
sequences from the keyboard. Control characters are not dis-
played when they are generated. The displayable 64 characters
consist of upper case letters, numerics and punctuation. When a
non-displayable lower case character is typed (lower case option
not installed), a lower case code is transmitted, but the char-
acter displayed is upper case. The lower case option permits
the display of 95 ASCII characters, consisting of upper and
lower case letters, numerics and punctuation.
1.5.3 Word Structure
The ADM-3A can transmit and receive data characters in anyone
of the asynchronous character formats shown in figure 1-4.
These word for.mat codes are selected by means of toggle switches
located beneath the front panel access plate.
1.5.4 Data Entry and OVerflow
New data enters on proqressive lines, top to bottom (cursor
control ON) or on bottom line of the screen (cursor control OFF).
Line Feed causes upward scrolling of the entire display page.
With top-of-page overflow, if the cursor is at the end of the
bottom line.
1.5.5 Configuration Corttrol
Twenty front panel toggle switches and 13 toggle switches located
on the main PCBA are provided for the purpose of establishing
certain default conditions for the ADM-3A The 13 PCBA switches
are factory set and may be checked and reset at the time of ter-
minal installation. Refer to Section 2. The 20 front panel
toggle switches (see figure 1-5), located beneath the nameplate
DPI04
1-7

____ LEAR SIEGLER. INC.
DATA PRODUCTS DIVISION
adjacent to the keyboard, control the following terminal char-
acteristics:
• KEYBOARD Switches
SW 1: LC EN -SHIFT Key fully operational, allowing
generation and display of upper
and lower case character codes
UC -SHIFT Key operational for only non-
alphabetical character codes: upper
case codes are generated (but not dis-
played) whether or not 3HIFT is depressed
SW 2-6,
Refer to Word Structure, paragraph 1.5.3
• BAUD RATE Switches
SW 1-7
and
SW 1-4,
SW 5,
SW 6,
SW 7:
SELECT ONLY ONE for baud rate of 75, 110,
150, 300, 600, 1200, 1800, 2400, 4800, 9600,
or 19200.
HDX - Selects Half Duplex operation
BDX - Selects Full Duplex operation
RS-232 - Selects RS-232C communication
~hrough MODEM interface connector
CL - Selects 20mA current loop communica-
tion through MODEM interface connector
AUTO NL - Causes cursor to automatically
move to first position on anew
line when 80th character on a line
is typed. If data was being
entered on the bottom line, the
entire display scrolls upward one
line.
OFF - Cursor remains at 80th character
while New Line is called for.
Continued typing of the 80th char-
acter changes that character
accordingly.
1-8 DP104

____ LEAR SIEGLER. INC.
DATA PRODUCTS DIVISION
Displayable
with AOM-3A
Upper/Lower
Case Display
feature.
Displayable in
standard AOM-3A
Control
Codes
(Generated by
holding crr:IL
key while tyPing
tne corresponding
key shown in col-
umns 4and 5.)
104-03
GRAPHIC CHARACTER
CONTROL
SET
BITS BITS 0 1 23456 7
432" -
765 000
001 010 011
100 101 110 111
0000 NUL
OLE SP ~
@P·P
000'
SOH
OC' !1Aa•q
00'0 STX DC2 "2BAb,
0011
CTX
0C3 *3C S e•
0'00 EaT OCA S40TdI
010' eNO NAK %5EU•u
0110
ACK sm &6Fvfv
0'1'
BEEP
era
7Gw9w
1000 as
CAN
I6HXhx
1001 HT
EM I9IY;Y
1010
LF
SUB
·JZiz
1011
VT
esc •KIk{
1100
FF
FS <L\I,
·
1101
CR GS -•MIm}
1110
SO AS >N
/I
n-
1111 SI
us
I?a-0DEI.
T
~
Figure 1-3. ADM-3A Graphic C~aracter Set
and CTRL Codes
DP104
1-9

'-'
0
""
I
0
""
hj
e·
'"
"
"
ro
'-'
I
""
.
<nO:
~O
e·"
<T'"
0
"hj
0
b'~
'-'
" ~
I",<T
'-'
e·
0
"'0
" 0
"'"
~ ro
<Too
e·
o ~
"e·
m<T
"
hj
"
0
"
<T
'"
~
"
ro
'-'
1.1
'"
'-'
o
""
FRONT PANEL SWITCHES IO-OR
ll-BIT WORD STRUCTURE
WORD
PAR FATA ~1~~~~f B~T
BITS
FORMAT
POSl'l'IONS 0123•S 6 789
10
SW2
SW3
SW'
SWS
SW6
Eleven-Bit Word EvEN 7 2 PAR X\ACTIVE
BITS ~ 1 OR 0
r-
TO TO
with EVEN Parity ITY
II,,I,PAR
and 2STOP Bits
Eleven-Bit Word
X
\. I I IIII
ODD
7 2 PAR ODD
with ODD Parity
ACTIVE BITS =1 OR 0TOP TO
I'fY IIII I I PAR
and 2STOp Bits
Ten-ait Word
Xr
-r
IIIIX
with EVEN parity
~VEN
71PAR \ACTIVE
BITS =1 OR aEVN TO
and 1STOp Bit
ITY
IIIIIIPAR
XrIIIII
IX
Ten-Bit Word \
wi th ODD Parity
ODD
71PAR
ACTIVE BITS =1 OR 0
ODD
TO
and 1STOp Bit
ITY
I I II I I
Eleven-Bit Word
I.X
\IITITI
AL-
with No Parity
82 INH 0ACTIVE BITS =1 OR 0
WAY
TOP ·TO
and 2STOp Bits
IIIIII0
I.X
\IIIIII
AL-
IX
Ten-Oit Word 81
INH 0ACTIVE
BITS =1 OR 0
WAYS
~TOP
with No Parity
and 1STOP Bit
IIIIII0
PAR \IIIII
AL-
Eleven-ait Word
EVEN 81ITY 0
ACTIVE BITS =1 OR 0IwAYS EVN
ill
with EVEN parity
0PAR
and 1 STOP ait
-+----H---I-H
Eleven-Bit Word PAR
PAR-
0
i\
AL-
with ODD parity
ODD 81AC'l'IVE
BITS =1 OR 0IwAYS
PDD
and 1 S'l'OP Bit
ITY
IPAR TO
II0
III I
g~
;;!'"
"en
",-
0'"
o~
e'"
0,"
~z
0°
~.
o
z

____ LEAR SIEGLER. INC.
OATAPRODUCTS DIVISION
'" ~I'
~un,_ ~'. 1 ••
HI' _I1
,UI_I ~.
,........ Uti
It II Ie
•
un .t
~
orr
8m
.-,-
"
~~
~
-=-
, ..
r"'" ~':"
-..r':1 •
....
~,
•
: N.
0
-0
•--c-=
-
...
_c-=
•
-
..
"'"= •
-
..
-.r:':'
,
-
'"
... r:;!l
'"
oor=" ,
l..
..
_~t
-
104-05
CONTRAST
CONTROL \
..
..-
,-'-_ 4a.- __
- Q ":I;. '1l'.I. tr. IlL lt. tl. It. ... l.=:- ~
_A.;ll!f.mlio.u..&.:c::t:.~E.r"'J;.
_ ~ ~:s,."' ...... u~~r:,.....!::.~
Figure 1-5.
DP104
Front Panel Switch Locations
1-11

,
____ LSAR SIEGL£FI,INC.
DATA PRODUCTS DIVISION
1. 6OPTIONAL FEATURES
The following options are available for use on the AOM-3A:
Option A - 24 Lines
This option provides the capability of displaying 24 lines of
80 characters each. The option must be installed before Options
1 thru 5 can be installed.
Option No. 1 - Lower Case Characters
This option provides the capability of displaying, as well as
generating and transmitting, lower case characters.
Option No. 2 - Answer sack
This option is activated by the HERE IS key which, when acti-
vated, transmits an identification message (stored in a special
ADM-3A memory) to identify the terminal and alert the host com-
puter tnat a message is to follow. The HERE IS key has no func-
tion if the option is not installed.
Option No. 3 - Numeric Key Pad
This option provides 14 keys on a movable pad for operator con-
venience. The pad contains the following upper and lower case
characters which parallel those on the main keyboard: numerics
(0 - 9); punctuation (- . ,); and ENTER (equivalent to RETURN).
Option No.4 - Display Test
This option provides a toggle switch mounted on the main PCBA
~hich may be used to test the CRT display.
Option No. 5 - Extension Port Current Loop
This option extends the RS-232C 20mA current loop capability to
the device connected to the ADM-3A through the EXTENSION port
interface.
Option No. 6 - Split Baud Rate
This option involves the addition of a 12-position rotary switch
adjacent to the present BAUD RATE switches, to permit the ADM-3A
to transmit at one baud rate (using current switches) and receive
at another baud rate (using new switch) .
Option No. 7 - BEEP Defeat
For this option a switch is added to provide the switch-select-
able capability of defeating or not defeating the BEEP signal.
1-12
OP104