PerkinElmer 1245 User manual

MODEL l25l l245
USER'S
MANUAL
PERKIN-ELMER
Terminals Division
360 Route 206
_ Flanders, New Jersey 07836

MODEL 1251/MODEL 1245
CRT Terminal
Manual
Publication 59300-0052-00
September, 1980
This manual contains information for the
Model 1251 and the Model 1245 CRT Terminals.
Its contents are proprietary and may not be
reproduced, in whole or in part, without
express written authorization of the
PERKIN-ELMER Terminals Division.
Related Model 1251/ 1245 Documentat ion:
Model 1251/ 124~ Maintenance Manual 59300-0053-00
Copyright ~ 1980
The PERKIN-ELMER Corporation

MODEL 1251/1245
TABLE OF CONTENTS
SECTION 1
INTRODUCTION
1.1
1.2
1.3
1.4
1.5
General Description
General Specifications
Options
Modes of Operations
Security Lo~king Keyswitch
SECTION 2
SELF TESTS
2.1
2.2
2. 3
2. 4
Introduction
RAM Self-Test
Keyboard Self-Test
Diagnostic Test
SECTION 3
CONFIGURATION
3.1
3.2
3.3
3.4
3.5
3.6
Introduction
Description of Configuration Options
Configuration by the Operator
Configuration by the Host
Configuration Default Assignments
Reading Configuration Parameters (Host)
1-1
1-3
1-5
1-6
1-14
2-1
2-1
2-2
2-2
3-1
3-2
3-17
3-20
3-55
3-57

SECTION 4
FUNDAMENTAL OPERATIONS
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
The ASCII Character Set
Keyboard Functions
Function Keys
Edit Mode Operations
Status Line
Setting Formatted Fields
Light Pen Operation
Block Mode Transmission Formats
Multi-Drop Polling
SECTION 5
MULTICOOE SEQUENCES
SECTION 6
INITIAL CHECKOUT
6.1
6.2
6.3
Unpacking Information
Visual Inspection
General
SECTION 7
INTERFACING
7.1 Peripheral Interface
7.2 Optional Current Loop Interface
SECTION 8
MAINTENANCE
8.1
8. 2
8. 3
8.4
Safety Precautions
Cleaning
Operator Checklist
Fuse Replacement
Appendix A International Character Sets/Keyboards
Index
4-1
4-8
4-13
4-16
4-21
4-24
4-29
4-32
4-39
5-1
7-1
7-5
8-1
8-l
8-l
8-2
A-l
I-l

LIST OF FIGURES
1-1
1-2
1-3
3-1
3-2
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-7
5-1
6-1
7-1
7-2
LIST
1-1
3-1
3-2
3-3
3-4
3-5
3-8
4-1
4-2
4-3
4- 4
4-5
5-1
5-2
5-3
6-1
7-1
7-2
7-3
7- 4
8-1
The Model 1251 CRT Terminal
Host/Terminal Interaction in a Polled Environment
Model 1251/1245 Keyboards
Optional Security Locking Keyswitch
Configuration Menu
Host Configuration - Parameters Format
Model 1251/1245 Function Keys
A Formatted Screen
Read and Send Command Sequences
Read/Send Unprotected Format
Read/Send Modified Format
Broadcast Format
Group/Fast Select Format
Polling Format
Status Byte Format
Terminal Unpacking Diagram
Model 1251/1245 Backpanel
20ma Current Loop Adapter
OF TABLES
Form Drawing Character Set
Mode Options
Communications Options
ASCII Character Conversion for Configuration
System Options
Keyboard Options
Printer Port Options
ASCII Control Characters
Standard ASCII Character Set
Function Key/Attention Identifier Characters
Attribute Characters ASCII/Hexadecimal
Communication Terminators
Model 1251/1245 MULTICODE sequences
Direct Cursor Addressing
Attribute Characters ASCII/Hexadecimal
Inspection
EIA Data Interface - Communicationg Line
EIA Data Interface - Printer Port
Current Loop Interface
Required Modem Options/Settings
Troubleshooting
1-8
1-11
1-14
3-18
3-21
4-14
4-25
4-33
4-36
4-37
4-41
4-41
4-42
5-21
6-3
7-2
7-6
1-13
3-26
3-30
3-33
3-38
3-42
3-48
4-1
4-7
4-15
4-28
4-38
5-2
5-6
5-13
6-2
7-4
7-4
7-6
7-7
8-2

,..
Model 1251/1245 User Manual
1.1 General Description
SECTION 1
INTRODUCTION
The Perkin-Elmer Model 1251/1245 is a sophisticated
micro-processor driven video display editing terminal that
combines thoughtful "human engineering" with numerous advanced
features.
The Model 1251/1245 offers:
.. Eye-level, tiltable screen for minimum muscle strain •
.. White or optional green CRT screen, etched and hooded
for unsurpassed glare rejection •
.. Descenders on lower case letters for easy reading •
.. Full set of video attributes for maximum highlighting,
including underlined fields •
.. Forms drawing character set for depiction of familiar
business forms •
.. A Status Li.ne indicating terminal status as well as
allowing two-way communications with the host without
interfering the current operation •
.. Your choice of two optional detachable keyboards .
.. Optional Locking Keyswitch on the Extended Keyboard •
.. Embedded numeric pad or dedicated numeric pad for
fast, accurate numeric entry •
.. Light Pen Option for quick data selection •
.. Attractive but conservative styling •
.. Silent operation •
.. "Request To Send" Block Mode Transmission eliminates
the need to reserve 2KB of host main memory for each
CRT.
1-1

Model 1251/1245 User Manual
* "Read Modified Only" capability - by line, by message~
or by page - reduces host time needed to determine
what data the operator entered or changed.
* Truly programmable function keys eliminate the host
time required to decode and issue the program calls;
the function keys may be reconfigured by the operator
or by the host (Model 1251 only).
* Control Protection (requires the simultaneous
depression of the Control Key) or Lock Out provisions
on various groups of keys prevent "accidental" key
depressions.
* SELF TESTS
* "Read Status· transmission so that the host can detect
if the keyboard is locked, optional printer is busy,
parity error has occurred, etc.
* "Transparen t" debugging mode, in which the Model
1251/1245 displays all the characters it receives,
including control characters.
The Model 1251 features a non-volatile, configuration EAROM. On
power-up, the Model 1251 operates according to configuration
data that can either be entered by the operator or transmitted
by the host. Four hundred characters in EAROM memory are
reserved for definition of Function Key messages.
The Model 1245 features a configuration PROM. Upon power-up,
the Model 1245 operates according to the configuration data
stored in the PROM.

Mod ell 2 51/ 1 24 5 Use r Man ua ...
1.2 General Specifications
Physical
Dimensions Monitor
Height
Width
Depth
Weight
Unpacked
Shipping
Screen
1 i in.
15 in.
14 in.
Screen Capacity
Characters per line
Number 0 f lines
Da taLi n e s 2 4
Status Line 1
Screen Size
Screen Color
Screen Surf ace
Displayable characters
Character Matrix
Character Generation
Scans per line
Refresh Rate
Tilt Range
Display
Normal
Inverse
Standard Keyboard
Ex tended Keyboard
~ • 25 in.
15 in.
~.25 in.
19 in.
~ in.
4{J Ibs.
:'Olbs.
(18 kg.)
t 23 kg. )
2000 characters
&0
25
12 inches (d iagonal )
Dark bodied P4 phosphor,
high contrast (white).
~ in.
Direct etch with filter glass.
160: Full 128 character ASCII set
incl ud ing con tro 1 chara ct ers in
transparent mode and 32 business
form-drawing characters.
~ X 12
i X 11
12
bO/50Hz non-interlaced
+/- 5 degrees from vertical
light characters on dark screen
dark characters on light screen
l-~

Model 125111245 User Manual
Keyboard
Character Code
Keyboard La yout
Repea t I<e Y Rat e
Communications
baud Rate
Stop Bits
Transmiss ion
Parity
Modem types supported:
Environmental
operational
Non-opera tional
Power
Standard
European
ASCII
ASCII
lScps
110, ~OO, &00, -1200,
2400, 4800, or 9600
tElA or 20ma Current LOop)
One or Two
Full Duplex or Hal f Duplex
Space, Mark, Even, or Odd
Acoustic Coupler,
1 0 ~.J , 11 ~D , 2 1 2A ,
and Direct Communication
to the host.
Ambient temperature range
o to 45 deg rees C
up to 80% relative humidity.
Ambient temperature range
... 40 to 65 deg rees C
up to 95% relative humidity
l15V (~OV-135V) @ 1.5 amp.
It 7Hz - 6 :'Hz •
Consumption typically
100 watts (,j42 BTUs).
115V ( 90v-l:'SV) ~ 1. 5 amp. or
2 ::0v (l 8 0 V- 2i 0 V) @ {J. i a mp •
It 7Hz-a ,jHz •
Consumption typically
100 wa t ts (,j4 2 BTU 5) •
1-4

1..3 Options
TiO-202
T70-20.3
T70-204
TiO-221
T70-240
T70-293
T/O-292
T 70- 2 6 OfT 70 - 270
T i 0- 26 11T 7 0- 27 1
T70-2621T70-272
TiO-263/T70-2i,3
TiO-264/T70-274
T 70 - 26 5/T 7 0 -2 15
Model 125111245 User Manual
standard (sized) Keyboard
includes embedded NUMERIC PAD
Extended Keyboard
includes separate NUMERIC PAD and
four (shiftable to eight) additional
Function Keys.
Extended Keyboard with four-position
Security Locking Keyswitch.
Green Anti-Glare CRT
Light Pen (incl udes four foot cord)
20ma Current Loop Interface Adapter
(requires T70-292)
Current Loop Cable
FRENCH (AZERTY) Character Set/Keyboard
capabilit ies (Extended Keyboard)
SWEDISH Character Set/Keyboard
capabilities (Extended Keyboard)
DANISH Character Set/Keyboard
capabilities (Extended Keyboard)
GERMAN Char acter Set/ Ke yboard
capabilities (Extended Keyboard)
UNITED KINGDOM Character Set/Keyboard
capabi 1 it ie s (Ex te nde d Ke yboard)
SPANISH Character set/Keyboard
capabi lit ies (Ex tended Ke yboard)
1-5

Model 1251/1245 User Manual
1.4 Modes of Operation
Operation of the Model 1251/1245 terminal is controlled by the
host computer andlor the keyboard and dependent on the various
modes of operation available. Although several operating modes
are mutually exclusive, the Model 1251/1245 may function within
several modes concurrently.
CONVERSATIONAL MODE
This mode enables the terminal to transmit and receive data
character-by-character in the same manner as a teletype.
In the CONVERSATIONAL Mode, a scroll type of representation may
be employed. When the cursor is at the bottom line of the
display and an atte!npt is made to advance to a new line, all
data lines are advanced upward. The visual effect is an upward
scroll with new data entered from the bottom line moving upward
one line at a time.
When in the CONVERSATIONAL Mode, the terminal can be set to
operate in half duplex or full duplex. In full duplexl the data
transmi tted through the keyboard does not appear on the screen
unless the host computer is programmed to echo back the
characters (Echoplex).
In half duplex, Echoplex is not required since a direct tie to
the display electronics is effected. Queries and
acknowledgements from both the host computer and the keyboard
are displayed as entered. However, if the keyboard and host
generate data simultaneously, the resultant display shows
intermixed characters.
BLOCK MODE
In this mod.e, an entire block of data can be entered in display
memory, edited, and then transmitted to the host. Transmission
does not take place until the terminal receives a specific
transmit command from either the keyboard (SEND) or the host
computer (Read).
Editing, effected through the EDIT Mode (see below), consists of
insertions and deletions of characters andlor lines, clearing
and setting tab stops, and clearing a line, field, or page.
Data transmission is effected as a line, a message, or an entire
page depending on the configuration of the SEND key condition.
1-6

Model 1251/1245 User Manual
Within Block Mode, operation can be either Block Mode-Immediate
or Block Mode-Request To Send.
REQUEST TO SEND
A special application of BLOCK Mode is Request To Send.
Request To Send is initiated by the receipt of the Multicode R
sequence, from the host or via the keyboard.
As in BLOCK ~lode-Immediate operation, data is entered and edited
on the keyboard~ data is stored in terminal memory. When the
SEND key is depressed, however, the Request To Send terminator
(defined in the Model 1251/1245 configuration) followed by an
attention identi Her (AID) character indicating the SEND key
condition (Line, Message, or Page) is transmitted to the host.
At its convenience, the host program allocates necessary buffer
storage and issues the proper READ Multicode sequence to
initiate transmission.
The Request To Send application of BLOCK Mode allows the system
designer to optimize fully the allocation of host time and
memory.
Unless Request To Send is specified, the Model 1251/1245 remains
in Block Mode-Immediate.
Polled Environment
The Model 1251/1245 terminals can perform within a system of
polled terminals, thereby, utilizing many terminals. This does
not require physical modification of the terminal or the
purchase of any extra options. However, additional hardware
(not provided by Perkin-Elmer), e.g., a modem splitter, may be
required, according to the needs of the installation. Figure
1-1 is a flowchart that shows the host/terminal interaction in
a polled environment. Further information is provided in
Section 4.S,.
1-7

Model 1251/1245 User Manual
Figure 1-1 Host/Terminal Interaction in Polled Environment
YES
* TERMINAL
~=-------r---------------
IS
SELECTED
FOR DATA
TRANSMISSIONI
RECEPTION
* ANOTHER
TEFlMINAL
IS BEING FOLlED.
THIS TERMINAL
NOT SELECTED.
DATA IS
TRANSMITTEDI
RECEIVED ON
A CHARACTER
BY CHARACTER
BASIS
TERMINAl
IS NO lONGER
SELECTED.
________ .t
CONVERSATIONAL MODE
DATA IS
SENT TO
HOST
•Send Key Depressed?
BlOCK MODE
REQUEST
TO SEND
r
BLOCK MODE
SEND IMMEDIATE
I EaT
1..... ___ TRANSMITTED k----'
TO HOST
1-8
YES

Model 1251/1245 User Manual
LOCAL "MODE"
In the Local "mode", no,data is transmitted or received over the
line. Keyboard entries ~~use the appropriate action directly on
the display. In all cases, di~play memory stores and displays
all displayable input characters. The DEL character will be
stored if it is preceded by the Multicode character. Control
codes are displayed only in the TAANSPARENT Mode (see below).
EDIT MODE
Upon depression of the Edit key, the Model 1251/1245 terminal
assumes the EDIT Mode. In this mode, Function keys F5, F6, F7,
F8, F9, FlO, Fl1, F12, and the shifted Function keys F17, F18,
F19,
F20, F2l, F22, F23, F24, F25, F26, F17, and F18 take on
Edit Mode operations upon depression. Through the EDIT Mode,
the operator can perform editing functions as well as:
alternately place the Model 1251/1245 on-line or off-line,
enter the CONFIGURATION Mode,
enter the PROGRAM Mode,
enter the TRANSPARENT Mode,
alternately place the Model 1251/1245 in BLOCK Mode or
CONVERSATIONAL Mode,
alternately enable or disable the Upper Case, Auto Line
Feed, New Line, and Scroll features .
.
transmit data to a printer, i.e., a PRINT key.
CONFIGURATION MODE
The operation of the Model 1251 terminal can be determined by
entries made in the CONFIGURATION Mode. Furthermore, the
CONFIGURATION Mode may be entered by either the operator through
the EDIT Mode or the host computer through Hulticode sequences.
The Configuration of the terminal takes into account Mode
options, Systems options, Communications options, Keyboard
options, Printer Port options, Communication Terminator
Definitions, and Function Key Definitions. For further
information on the CONFIGURATION Mode, see Section 3.3.
1-9

Model 125l/l245 User Manual
TRANSPARENT MODE
In the TRANSPARENT Mode, control characters are displayed but
not acted upon, e.g., carriage return and line feed are
displayed as "CR" and "LF" respectively, but the cursor is only
advanced to the next position, not moved to column 1 nor
advanced by a line. The TRANSPARENT Mode is a useful
communications debugging tool.
Control characters are displayed as
(COntrol ChM8cter; X '00' - X 'IF')
The TRANSPARENT Mode may be entered through the EDIT Mode by a
depression of Function key F19 (F3 shifted) and exited in the
same manner. Control-P (OLE) followed by Control-B (STX) also
initiates the TRANSPARENT Mode: Control-P (OLE) followed by
Control-C (ETX) ends the TRANSPARENT Mode.
In the TRANSPARENT Mode, the screen is filled with either null
characters or spaces, depending on the Model 1251/1245
configuration. Also, the Scroll feature is disabled and the New
Line feature is enabled, regardless of configuration or
settings. All attribute characters are displayed in the
TRANSPARENT Mode. To display a OLE character, two OLE
characters must be entered.
NUMERIC MODE
For Model 1251/1245 terminals with the Standard Keyboard, a
ten-key numeric pad is superimposed on the ASCII keyboard. When
the NUMERIC Mode key is depressed, the ASCII functions of these
keys are disabled and the numeric values superimposed on these
keys are enabled.
The numeric pad superimposed on the ASCII keyboard is shown in
Figure 1-2.
1-10

Model 1251/1245 User Manual
Standard Keyboard
Extended Keyboard
Figure 1-2 Model 1251/1245 Keyboards
1-11

Model 1251/1245 User Manual
PROGRAM MODE
The PROGRAM Mode enables the programmer to arrange and organize
display data into fields, thus making transfer and display
operations easier for the operator. Fields are designated by
attribute characters which define the start of the field and,
consequently, the end of the previous field.
The PROGRAM Mode is initiated via the Edit Mode by a depression
of Function Key 18 (F 2 shi fted) •
Using the Cursor Control keys, the programmer moves the cursor
to the desired positions to create attribute characters. In the
PROGRAM Mode, the SEND key may be used to create an attribtute
character. The programmer then enters a mnemonic indicating the
I
type of attribute character desired: more than one mnemonic may
be entered for combinations. of field types.
The mnemonic or combinations of mnemonics selected dete:rmine the
type of field, specifying video and operational characteristics.
For example, the programmer may designate inverse video fields,
half intensity fields, non-display (security) fields, light pen
detectable fields, etc. Further information on screen fields is
provided in Section 4.6.
Another depression of Function Key 18 while the Model 1251/1245
is in the EDIT Mode alternately causes Model 1251/1245 to exit
the P ROG RAM Mode.
FORM DRAWING
The Model 1251/1245, upon receipt of the ASCII SO character
(Control-N), enters a mode in which speCial form drawing
characters are displayed. These characters, thirty-two in all,
can be used to depict facsimiles of business forms on the
screen. When used in tandem with the various field types
acquired through the PROGRAM Mode, the Model 1251/1245 offers a
powerful repertoire of display teehniques to increase operator
effeciency. This special mode is exited upon receipt of the
ASCII 51 character (Control-a).
The form drawing character set is shown in Table 1-1.
1-12

Model 1251/1245 User Manual
Table 1-1 Form Drawing Chara~ter Set
~
..
X X
8, b6
..
X X
..
0 I
T b5
5
-----
b4
b3 b2 bt 0/2/4/6
'/3/5/7
0 0 0 0 0 (ij) -p ~
0 0 0 I I A I Q i
0 0 I 0 2 8 + R
.,
0 0 I
I'
3 C
-L
.5
-I
0 I 0 0 4 0 I T
~
0 I 0 I 5 E L u
~
0 I J 0 6 F r V ¢
0 I I I 7 G 1 w
-£
I 0 0 0 8 H
....J
X .
.
I 0 0 I 9 I
f-
y >
I 0 J 0 A J
-l
z <
J 0 I I 8 K -[
-+
I I 0 0 C L ¥ \ +-
I I 0 I 0 M , ] t
-T-
I I f 0 E N ..J... A
i-
I I I I F 0
-r-
-
1-13

Model 125111245 User Manual
1.5 Optional Security Locking Keyswitch {T70-204)
The optional Security Locking Keyswitch, available only on the
Extended Keyboard, provides a me~~~ of locking or unlocking the
entire keyboard, only the EDIT key, or only the Function Keys
without entering the Configuration Mode (in the case of the
Model 1251).
The Security Locking Keyswitch is the only means the operator
has of locking the entire keyboard. Also, the Security Locking
Keyswitch is the only means the operator has of locking-out the
EDIT key or the Function keys on the Model 1245.
The Security Locking Keyswitch is illustrated in Figure 1-3,
below.
Figure 1-3. Optional Security Locking Keyswitch
KEYBD DISABLE:
There are four positions:
KEYBD ON
FUNC KEYS
DISABLE
EDIT DISABLE
KEYED ON All keyboard functions are operational.
KEYED DISABLE No keyboard functions are operational.
FUNC KEYS DISABLE No Function Keys are operational.
EDIT DI SABL E
NOTE:
because
Keys.
EDIT Mode functions will be
they involve the use of
disabled
Function
The EDIT key is not operational; Edit Mode
operations are, therefore, locked-out.
The key may be removed in any of these four locking positions.
1-14